Ventilators

Hamilton Medical HAMILTON-T1: troubleshooting and error codes

The ServiceForge knowledge base holds 128 documented symptoms for the Hamilton Medical HAMILTON-T1, with 181 ranked causes, 301 diagnostic checks with test points and expected values, and 446 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

Sensor status shows error or invalid state

Sensor data displays abnormal status values (hex) indicating defect, missing, overflow, underflow, temperature, or invalid conditions

Ranked causes

1. Sensor defect status (0004) (rare)
2. Sensor missing or not running (0008) (occasional)
3. Autozero sequence in progress (0010) (occasional)
4. Measurement overflow (0020) or underflow (0040) (occasional)
5. Temperature error - undertemperature (0100) or overtemperature (0200) (rare)
6. Sensor disabled (0080) or invalid (0400) (rare)
7. Sampling line occluded (2000) (occasional)

First check

Read sensor status hex value

Test point: Sensor 1/2/3 status field
Expected: 0003 or similar with only Initialized (0001) and Calibrated (0002) flags set
Tools: Service software display

7 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Service software startup and technical state management caution

Procedure for starting HAMILTON-T1 service software, managing hardware/software versions, updating technical state after component replacement, and resetting blower timer.

Ranked causes

1. Initial service software startup and self-test required (common)
2. Technical state information needs recording and verification (common)
3. Component replacement requires technical state modification and restart (common)
4. Technical state corruption or EEPROM read failure requires cleanup (occasional)
5. Export and import technical state to/from USB drive (occasional)

First check

Verify service software startup sequence completes

Test point: Main service software screen (page 0000)
Expected: Service software main screen displayed with no startup errors

4 more checks with pass and fail actions, 7 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

SpO2 measurement not displaying or incorrect values patient safety

SpO2 sensor connected but values not shown in monitoring tab or dynamic lung view, or readings are invalid

Ranked causes

1. SpO2 communication board not installed or not detected (occasional)
2. SpO2 hardware option not activated in configuration (common)
3. Incorrect SpO2 sensor type configured (common)
4. SpO2 sensor not activated or not connected to board (occasional)
5. Finger probe not properly attached or insufficient signal (occasional)

First check

Verify SpO2 communication board installed

Test point: System Info display
Expected: SpO2 communication board listed in installed hardware

5 more checks with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Battery storage conditions inadequate caution

Battery stored at incorrect temperature or humidity; risk of reduced shelf life and performance

Ranked causes

1. Storage temperature exceeds 25°C over 6-month recharge interval (occasional)
2. Battery stored in discharged state (rare)
3. Extended exposure to extreme temperatures (rare)
4. Adverse storage environment (vibration, moisture, corrosive gas, etc.) (rare)

First check

Verify storage temperature

Test point: Storage location
Expected: Between 5°C and 21°C; do not exceed 25°C over 6-month intervals, 5-21°C optimal; max 25°C

3 more checks with pass and fail actions, 4 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Proximal test failures

Rinse flow, proximal pressure, proximal flow, or rinse tank test shows NOT OK; abnormal bubble patterns or pressure readings detected

Ranked causes

1. Rinse flow obstruction or unequal flow distribution (unknown)
2. Proximal pressure sensor malfunction or calibration drift (unknown)
3. Proximal flow sensor fault (unknown)
4. Rinse tank leak or connection loose (unknown)

First check

Observe bubble pattern in water tubes during rinse flow test

Test point: Water tube outlets
Expected: Bubbles appear at both outlets; number of bubbles approximately equal

3 more checks with pass and fail actions, 4 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

SpO2 measurement not displaying values patient safety

SpO2 sensor connected but no measurement values shown on display (HAMILTON-T1 SN > SN3000 only)

Ranked causes

1. SpO2 communication board not installed (common)
2. SpO2 hardware option not activated (common)
3. SpO2 sensor type not configured (common)
4. SpO2 sensor not connected or inactive (common)

First check

Verify SpO2 communication board is installed

Test point: System > Info > Info Tab
Expected: SpO2 communication board listed

3 more checks with pass and fail actions, 4 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Unit fails to complete startup or preoperational checks patient safety

Ventilator does not pass required preoperational tests before clinical use

Ranked causes

1. Tightness test failed or not completed (unknown)
2. Flow sensor calibration not completed or failed (unknown)
3. O2 cell calibration not completed or failed (unknown)
4. Alarm system tests failed or not completed (unknown)

First check

Perform tightness test

Test point: Patient circuit and breathing system
Expected: No air leaks detected; system holds pressure

9 more checks with pass and fail actions, 4 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Battery state of health assessment patient safety

Monitor battery state of health (SoH); replace when SoH <20%; consider replacement when <40% or cell voltage difference >100 mV; calibrate if error ≥5%.

Ranked causes

1. Battery SoH <20% (occasional)
2. Battery SoH 20-40% or cell voltage asymmetry (occasional)
3. Battery error ≥5% (rare)

First check

Check battery state of health (SoH)

Test point: Battery data screen (Page 1500)
Expected: SoH percentage displayed

2 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Expiratory valve (adult/pediatric)

Adjust expiratory valve gain using external pressure gauge to ensure correct pressure reading and gas flow control during ventilation.

Ranked causes

1. Expiratory valve requires calibration after service or sensor drift (common)
2. Adult/pediatric expiratory valve requires separate calibration (common)
3. Calibration blocked by corrupted calibration file (rare)

First check

Verify external pressure gauge reading during gain adjustment

Test point: Pressure connector 500300
Expected: 50 mbar +/- 0.5 mbar (51 cmH2O +/- 0.5 cmH2O), +/- 0.5 mbar
Tools: External pressure gauge

6 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Neonatal expiratory valve test fails patient safety

Component test for neonatal expiratory valve returns NOT OK result during automated testing in service software

Ranked causes

1. Pressure sensors Pexpvalve and Pvent_control not equal when proportional valve fully closed (common)
2. Expiratory proportional valve not opening fully or Pexpvalve not reading zero when valve opened (occasional)
3. Pressure test out of tolerance during automated measurement (occasional)

First check

Compare pressure sensor readings

Test point: Pexpvalve and Pvent_control
Expected: Equal readings with patient system tightened and valve closed

2 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Air entry filter obstruction or excessive pressure drop

Air entry (Pfilter) test shows NOT OK; filter pressure exceeds normal tolerance; airway entry test fails

Ranked causes

1. HEPA filter clogged or blocked with debris; high differential pressure (common)
2. NBC filter adapter (161787) installed with altered pressure tolerance (occasional)

First check

Run air entry test with default HEPA filter installed

Test point: HEPA filter pressure (Pfilter)
Expected: Pfilter within defined tolerance; test displays OK result

1 more check with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Battery replacement due to age

Battery must be replaced based on installation or manufacturing date with software version < 2.2.0

Ranked causes

1. Two years after installation date (software < 2.2.0) (common)
2. Three years after manufacturing date (software < 2.2.0) (common)

2 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Battery showing marginal state of health or cell voltage asymmetry

SoH between 20-40% or cell voltage difference exceeds 100 mV across cells

Ranked causes

1. Battery state of health (SoH) 20-40% (occasional)
2. Cell voltages permanently asymmetrical (>100 mV difference) (occasional)

First check

Check battery SoH percentage

Test point: Battery data page (Page No. 1500)
Expected: SoH < 40%

1 more check with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Battery state of health low

Battery SoH <20% requires replacement; SoH <40% should be considered for replacement depending on software version

Ranked causes

1. Battery SoH < 20% (common)
2. Battery SoH < 40% (occasional)

First check

Monitor battery state of health

Test point: Battery status indicator
Expected: SoH ≥ 40%

2 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Buzzer does not sound during power loss caution

No audible alarm when all power sources (AC, DC, batteries) are removed

Ranked causes

1. Supercapacitors (gold caps) not fully charged (common)
2. Control board defective or buzzer circuit faulty (occasional)

First check

Charge supercapacitors before power loss test

Test point: Device power state
Expected: Device powered on in Stand-by or Service Mode for 20 minutes minimum

1 more check with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Buzzer does not sound during power loss or sounds less than 2 minutes high voltage

Unit loses all AC, DC, and battery power; buzzer does not alarm or sounds for insufficient time

Ranked causes

1. Supercapacitors (gold caps) on control board not sufficiently charged (occasional)
2. Control board defective or buzzer circuit failure (rare)

First check

Verify supercapacitor charge time before test

Test point: Device power state
Expected: Powered on for at least 20 minutes in Standby or Service Mode

3 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Flow sensor (adult/pediatric and neonatal)

Calibrate inspiratory and expiratory flow sensors by rotating sensor mechanically during automatic calibration to measure airflow accurately at different pressures.

Ranked causes

1. Flow sensor requires calibration with adult breathing circuit (common)
2. System overwrites calibration values when switching sensor type (occasional)

First check

Confirm flow sensor rotation performed

Test point: Flow sensor position
Expected: Sensor mechanically rotated before calibration start

3 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: O2 cell (offset and gain) caution

Calibrate oxygen sensor offset using room air reference, then gain using high-pressure oxygen to ensure accurate O2 concentration measurement.

Ranked causes

1. O2 cell requires offset calibration using room air baseline (common)
2. O2 cell gain calibration follows offset calibration (common)

First check

Monitor offset calibration result

Test point: O2 cell calibration display
Expected: OK

1 more check with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Expiratory valve exhaust tubing disconnected or blocked patient safety

Expiratory proportional valve exhaust not connected to bleed port causing O2 enrichment inside ventilator

Ranked causes

1. Expiratory valve exhaust tubing disconnected from bleed port (common)
2. Expiratory valve tubing blocked or expiratory valve membrane defective (occasional)

First check

Verify expiratory valve exhaust tubing is connected to bleed port

Test point: Bottom cover expiratory valve bleed port (outlet)
Expected: Tubing from expiratory proportional valve exhaust firmly connected

1 more check with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Expiratory valve malfunction or obstruction patient safety

Exhalation obstructed warning or valve not operating; O2 enrichment occurring inside ventilator

Ranked causes

1. Expiratory valve bleed port tubing disconnected or blocked (common)
2. Expiratory valve membrane damaged or defective (occasional)

First check

Verify expiratory valve bleed port tubing connected

Test point: Expiratory valve bleed port at bottom cover outlet
Expected: Tubing from proportional valve exhaust connected to outlet

1 more check with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Fan not producing proper suction or airflow caution

Fan inlet does not produce sufficient suction to hold paper or airflow is insufficient

Ranked causes

1. Fan not properly assembled or obstructed (common)
2. Fan motor defective or not operating (occasional)

First check

Inspect fan assembly and inlet for obstructions

Test point: Fan housing and inlet opening
Expected: No visible obstructions or debris; fan properly seated in housing

1 more check with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Leak test not passing patient safety

System does not maintain pressure, or tightness test shows leakage when obstruction valve is tested or during pressurization cycle.

Ranked causes

1. Obstruction valve not functioning or leaking (common)
2. Patient breathing circuit or filter not properly sealed (common)

First check

Verify breathing circuit and filter assembly

Test point: Patient connection port, expiratory connection port, flow sensor ports
Expected: All connections seated, no visual gaps or damage

2 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Nebulizer system pressure loss or leak caution

Nebulizer tubing connection or internal valve leaking; pressure does not hold or rises unexpectedly

Ranked causes

1. Nebulizer tubing not properly connected (common)
2. Nebulizer valve internal leak or O2 mixer seal failure (occasional)

First check

Connect hand pump to nebulizer port

Test point: Nebulizer port connection
Expected: Hand pump and tube properly connected

2 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Nebulizer tubing or valve leaking caution

Pressure loss detected in nebulizer circuit or backpressure indicates internal valve leakage

Ranked causes

1. Nebulizer tubing loose or improperly connected (common)
2. Nebulizer valve defective or O2 mixer internal leak (occasional)

First check

Test nebulizer tubing connection tightness

Test point: Nebulizer port and tubing connection (Di=4 mm/L=150 mm)
Expected: 60 mbar (56-64 mbar) pressure sustained without loss
Tools: Hand pump (500330), pressure indicator

1 more check with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Neonatal expiratory valve test verification

Expiratory valve pressure test fails, or pressure sensor readings do not match expected values when valve is closed or opened.

Ranked causes

1. Pressure sensor Pexpvalve or Pvent_control drift or malfunction (occasional)
2. Expiratory proportional valve solenoid not responding or valve stuck (occasional)

First check

Select neonatal mode in expiratory valve test window

Test point: Mode selector icon in window header
Expected: Neonatal mode active

7 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Nurse call relay not responding to alarms caution

Alarm condition does not trigger proper relay contact closure/opening or I:E timing relay not switching

Ranked causes

1. Nurse call connector not properly connected (common)
2. Relay contact failure or stuck relay (occasional)

First check

Connect nurse call connector

Test point: Communication board nurse call port
Expected: Connector or cable properly seated

5 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Pressure sensor assembly removal and installation caution

Procedure for removing and installing the pressure sensor assembly on HAMILTON-T1 ventilators across three serial number ranges (SN >= SN3000, SN2292-2999, and < SN2292), including tube disconnection and reconnection steps

Ranked causes

1. Maintenance or replacement of pressure sensor assembly required (unknown)
2. Reinstallation of pressure sensor assembly (unknown)

First check

Disconnect tube 2 and 3 from check valve assembly (SN >= SN3000)

Test point: Check valve assembly (5)
Expected: Tubes disconnected

7 more checks with pass and fail actions, 4 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

RS-232 communication interface not functioning

Ventilator does not communicate with patient monitoring system or Datalogger software

Ranked causes

1. RS-232 protocol not configured correctly (common)
2. Communication cable not connected or faulty (common)

First check

Verify RS-232 protocol configuration

Test point: Utilities > Configuration > General > RS-232 Protocol
Expected: HAMILTON protocol selected

2 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

RS-232 communication interface not working

Communication with external patient monitoring system or Datalogger software fails or no signal detected

Ranked causes

1. RS-232 protocol not configured correctly (common)
2. Communication cable disconnected or defective (occasional)

First check

Configure RS-232 protocol

Test point: Configuration menu RS-232 Protocol setting
Expected: HAMILTON protocol selected

2 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

System tightness test failed

System pressure not maintained or drops beyond acceptable level indicating internal or circuit leakage

Ranked causes

1. Leak in system or breathing circuit tubing (common)
2. Obstruction valve malfunction (SN3000 and above) (occasional)

First check

Run tightness test with test configuration 4 installed

Test point: System pressure maintenance
Expected: OK result displayed after test completion

2 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Technical state corrupt or failed

Self-test fails and displays 'Check hardware compatibility' or 'Technical state failed' message. Part causing failure highlighted in red in HW version tab.

Ranked causes

1. Incompatible hardware component combination installed (occasional)
2. Control board replaced or EEPROM communication interrupted (occasional)

First check

Examine HW version tab for highlighted parts in red

Test point: HW version display
Expected: No parts highlighted in red; all components show normal status

1 more check with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Air entry test with obstruction

Filter obstruction test to verify system response to blocked air entry

Ranked causes

1. Filter obstruction or air entry blockage (unknown)

First check

Place obstruction (plastic foil/paper) on air entry with small hole

Test point: Air entry obstruction
Expected: Obstruction properly positioned with 120 x 60 mm dimensions and small hole

1 more check with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Alarm lamp or sound not generating correctly

Alarm system not producing correct lamp illumination or sound output for alarm priorities

Ranked causes

1. Alarm system hardware or firmware malfunction (unknown)

First check

Activate high-priority alarm and verify lamp and sound

Test point: Alarm lamp, alarm sound
Expected: Correct lamp illumination and sound output for high priority

3 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Alarm monitor test 2 watchdog does not activate caution

Alarm LED fails to blink or buzzer fails to sound when watchdog activated in alarm monitor test 2

Ranked causes

1. Watchdog circuit malfunction or alarm output failure (occasional)

First check

Verify watchdog activates alarm LED and buzzer

Test point: Watchdog circuit and alarm outputs
Expected: Alarm LED blinking and buzzer sounding

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Alarm silence key does not respond at step 3 caution

Pressing alarm silence key fails to turn on alarm silence LED at step 3

Ranked causes

1. Alarm silence key or switch circuit failure (occasional)

First check

Verify alarm silence key activates LED

Test point: Alarm silence key and LED
Expected: LED ON after key press

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Alarm silence LED does not blink during initialization caution

Alarm silence LED fails to blink at step 1 of alarm monitor test 1

Ranked causes

1. Alarm LED circuit malfunction (occasional)

First check

Verify alarm silence LED blinks at step 1

Test point: Alarm silence LED
Expected: LED blinking

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Alarm silence LED does not turn off at step 4 caution

Alarm silence LED remains on instead of turning off at step 4 of alarm monitor test 1

Ranked causes

1. Alarm LED control circuit malfunction (occasional)

First check

Verify alarm silence LED is OFF at step 4

Test point: Alarm silence LED
Expected: LED OFF

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Alarm silence LED does not turn on at step 2 caution

Alarm silence LED fails to illuminate solid at step 2 of alarm monitor test 1

Ranked causes

1. Alarm LED circuit malfunction (occasional)

First check

Verify alarm silence LED is ON at step 2

Test point: Alarm silence LED
Expected: LED ON

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Alarm silence LED turns on at step 5 caution

Alarm silence LED turns on when it should remain off after key press at step 5

Ranked causes

1. Alarm silence key or control logic malfunction (occasional)

First check

Verify alarm silence LED stays OFF at step 5

Test point: Alarm silence LED
Expected: LED stays OFF

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Alarm test failure patient safety

Correct alarm lamp does not illuminate, alarm sound is not generated, alarm priority is incorrect, or loudness adjustment does not affect alarm output.

Ranked causes

1. Alarm system not responding to test command (occasional)

First check

Activate High alarm

Test point: Alr.High button
Expected: High priority alarm lamp illuminates, alarm sound generates

4 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Ambient state test does not trigger alarm patient safety

Alarm silence LED does not turn on and buzzer does not sound during ambient state test at step 8

Ranked causes

1. Ambient sensor or alarm circuit malfunction (occasional)

First check

Verify alarm silence LED and buzzer activate in ambient state

Test point: Ambient sensor and alarm circuit
Expected: Alarm silence LED ON and buzzer sounds

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Battery calibration error 5% or greater

Battery calibration error meets or exceeds 5%; calibration cycle required

Ranked causes

1. Battery calibration drift accumulated over time (occasional)

First check

Measure battery calibration error

Test point: Battery management system calibration status
Expected: Error < 5%, Within 5%

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Battery calibration error at or above 5%

Battery charger reports calibration error of 5% or greater, indicating battery requires calibration

Ranked causes

1. Battery charge measurement drift or calibration drift (occasional)

First check

Check battery calibration error on charger

Test point: Charger error display
Expected: Error < 5%

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Battery calibration maintenance due

Annual preventive maintenance calibration cycle recommended for active battery

Ranked causes

1. Normal maintenance interval reached during active battery use (common)

First check

Verify charger model and revision

Test point: Charger label
Expected: Model 369104 revision 07 or higher

1 more check with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Battery calibration required

Battery error ≥ 5% indicates calibration is needed to maintain accurate battery status monitoring

Ranked causes

1. Battery error ≥ 5% (unknown)

First check

Check battery error percentage

Test point: Battery status display
Expected: Error ≥ 5%

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Battery disposed improperly patient safety

Battery disposed by incineration or burning; risk of explosion and environmental hazard

Ranked causes

1. Battery incinerated or burned at end of life (rare)

First check

Verify disposal method planned

Test point: Disposal procedure documentation
Expected: Disposed per local regulations, not incinerated

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Battery error exceeds 5%

Battery Error parameter on Battery data page shows value of 5% or greater

Ranked causes

1. Battery error ≥ 5% (occasional)

First check

Check battery Error percentage

Test point: Battery data page (Page No. 1500) - Error field
Expected: Error < 5%

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Battery State of Health below 20%

Battery SoH indicator shows value less than 20%, indicating battery requires replacement

Ranked causes

1. Battery age or degradation (common)

First check

Check battery State of Health indicator

Test point: Battery status display
Expected: SoH reading

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Battery State of Health between 20-40%

Battery SoH indicator shows 20-40%; battery replacement should be considered

Ranked causes

1. Battery approaching end of service life (occasional)

First check

Check battery State of Health indicator

Test point: Battery management system display
Expected: SoH value between 20-40%

2 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Battery State of Health between 20% and 40%

Battery SoH indicator shows value between 20% and 40%, indicating battery replacement should be considered

Ranked causes

1. Battery age or partial degradation (common)

First check

Check battery State of Health indicator

Test point: Battery status display
Expected: SoH reading between 20% and 40%

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Battery storage conditions maintenance caution

Preventive measures for battery preservation during storage to maintain battery life and readiness

Ranked causes

1. Improper storage conditions reduce battery shelf life (common)

First check

Verify storage temperature

Test point: Storage environment
Expected: 5°C to 21°C; not exceeding 25°C over six-month periods

1 more check with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Blower replacement based on timer

Replace blower module when blower timer reaches 100% or predicted to reach 100% within 6 months; update serial and revision numbers.

Ranked causes

1. Blower timer at or approaching 100% (common)

First check

Monitor blower timer percentage

Test point: Blower timer tab (Page 1201)
Expected: Blower timer value displayed in percentage

2 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Blower service required alarm displayed

Alarm message 'Blower service required' appears on display when blower operating time reaches 100%

Ranked causes

1. Blower operating time limit reached 100% (common)

First check

Check blower timer percentage on display

Test point: Blower timer tab (Page No. 1201)
Expected: ≥100% indicates replacement required

1 more check with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Blower timer reset required

After blower module replacement, blower timer must be reset to track service life of new blower module correctly.

Ranked causes

1. Blower module replaced with new serial number (common)

First check

Access Modify tab and select blower module component

Test point: Technical state Modify screen
Expected: Blower module component selectable and editable

2 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Alarm monitor 1 test caution

Test alarm monitoring system components in 10 steps including ambient state, fan failure alarm, audio pause button and buzzer; requires manual confirmation at each step

Ranked causes

1. Alarm monitoring system component verification required (common)

First check

Alarm monitoring system components operational

Test point: Electronics tab Alarm Mon.1 window
Expected: Test completed status displayed in Info window

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Alarm monitor 2 watchdog test caution

Activate software watchdog; verify alarm LED blinks and buzzer sounds; requires manual confirmation and ventilator reboot afterward

Ranked causes

1. Software watchdog and alarm circuit verification required (common)

First check

Alarm LED blinks during watchdog activation

Test point: Alarm LED indicator
Expected: LED blinks when watchdog activated
Tools: Visual inspection

2 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Alarm system test

Test speaker, yellow lamp, red lamp, audio pause LED and loudness levels; confirms alarm audible output and visual indicators

Ranked causes

1. Alarm system component verification required (common)

First check

Speaker audible test

Test point: Loudspeaker component
Expected: Audible alarm sound confirmed by technician
Tools: Ear inspection

3 more checks with pass and fail actions, 4 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Autozero sequence test

Test pressure and flow sensors (Paw, Qaw, Pvent_monitor, Pvent_control) during autozero operation; requires bacteria/HME filter, breathing circuit, and blocked flow sensor end

Ranked causes

1. Sensor autozero functionality verification (common)

First check

Autozero test configuration TC4 setup

Test point: Sensor circuit pneumatic connections
Expected: All components connected per TC4 diagram; flow sensor end blocked
Tools: Visual inspection against diagram

1 more check with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Battery fuel gauge recalibration caution

Battery fuel gauge accuracy degrades over time; red LED flashes when battery inserted into charger indicating need for recalibration. Recalibration cycle includes discharge, calibration charge, calibration discharge, and regular charge phases.

Ranked causes

1. Battery fuel gauge accuracy degradation due to charge cycles without rest periods (common)

First check

Observe red LED indicator on battery charger

Test point: Battery charger front panel LED
Expected: Red LED flashing

2 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Binary valves autozero test

Test auto zero valves (Pvent_monitor, Pflowsensor) during operation and autozero sequence; setup requires bacteria/HME filter, adult breathing circuit, flow sensor tubes and ET-tube

Ranked causes

1. Binary valve autozero functionality verification (common)

First check

Binary valve test setup configuration TC3

Test point: Pneumatic circuit test points
Expected: All components connected per TC3 diagram; test ready to start
Tools: Visual inspection against diagram

1 more check with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

More symptoms

Calibration: Blower flow test
Calibration: Blower pressure test
Calibration: Default settings reset
Calibration: Expiratory proportional valve (Adult/Ped.)
Calibration: Expiratory valve
Calibration: Expiratory valve (Neonatal)
Calibration: Expiratory valve offset and gain display
Calibration: Expiratory valve test
Calibration: Flow sensor
Calibration: Flow sensor (Adult/Ped.)
Calibration: Flow sensor values display (inspiratory/expiratory)
Calibration: Inspiratory tube resistance (Rinsp) values display
Calibration: Neonatal expiratory valve offset voltage
Calibration: Neonatal flow sensor
Calibration: Neonatal flow sensor offset and linearity
Calibration: O2 cell offset and gain values display
Calibration: O2 sensor
Calibration: Pressure sensor adjustment
Calibration: Pressure sensor values display
Calibration: Pressure sensors
Calibration: software update completion
Calibration: SpO2 sensor measurement
Calibration: Touchscreen
Calibration: User interface test
Check valve assembly tightness or obstruction valve failure (SN >= SN3000)
Check valve backflow detected
Check valve flap visually damaged or misaligned
Check valve one-way function failure (SN < SN3000)
Check valve tightness fails (SN >= 3000)
Display brightness does not switch between day and night modes
Distorted sound in alarm loudness range
Fan failure alarm does not trigger
Fan not providing adequate airflow
Filter pressure sensor reads incorrectly
Flow sensor values out of tolerance
Flow test verification
Hardkeys do not light when pressed
Nebulizer tube installation
Nebulizer valve not operating
O2 mixer sensor values out of tolerance
O2 mixer test verification
Obstruction valve fails to release pressure (SN >= 3000)
P&T knob does not respond or rotate incorrectly
Pressure test values out of tolerance
Print screen function
Proximal flow out of tolerance
Proximal pressure out of tolerance
Real time clock (RTC) requires adjustment
Real-time clock (RTC) date/time adjustment
Red lamp does not blink (Control Board Rev. >= 09)
Red lamp does not illuminate (Control Board Rev. < 09)
Reset to default calibration settings
Rinse flow tank pressure does not hold
Rinse flow unequal between outlets
Sensor status interpretation needed
Service date reset after maintenance
Service timer reset
Software update required after service procedures
Speaker does not produce audible sound
Touchscreen calibration required
Unit does not power on from AC mains
Unit does not switch to battery power
Unit does not switch to DC power
Unit does not transition from battery to DC power
Unit does not transition from DC to battery power
Unit does not transition to battery power
Ventilator unused for extended period
Yellow alarm lamp does not illuminate

68 more symptoms with ranked causes and checks are in ServiceForge. Connect ServiceForge to your AI

Error codes

Code	Meaning	Trigger	Severity
`100000`	Patient alarms - conditions affecting patient safety during ventilation	Patient-related adverse conditions detected by the ventilator	critical
`100000`	Patient alarms related to pressure, flow, volume, apnea	Detected condition in patient breathing parameters	unknown
`132001`			unknown
`132002`	Check flow sensor tubing	Flow sensor tubing issue detected	warning
`132003`	Check flow sensor	Flow sensor malfunction detected	warning
`132004`	Check flow sensor	Flow sensor missing or disconnected	warning
`132005`	O2 sensor defective	O2 sensor malfunction detected	error
`132006`	O2 sensor n/a	O2 sensor not available or disconnected	warning
`132007`	O2 sensor not system compatible	Incompatible O2 sensor installed	error
`132008`	O2 sensor calibration needed	O2 sensor requires calibration	warning
`132010`	CO2 sensor disconnected	CO2 sensor not connected	warning
`132011`	CO2 sensor defect	CO2 sensor malfunction detected	error
`132012`	CO2 sensor over temperature	CO2 sensor temperature exceeds limit	error
`132013`	CO2 sensor warmup	CO2 sensor warming up	info
`132015`	Flow sensor calibration needed	Flow sensor requires calibration	warning
`132016`	Check CO2 airway adapter	CO2 airway adapter issue detected	warning
`132017`	Check CO2 sampling line	CO2 sampling line issue detected	warning
`132018`	SpO2: patient disconnected	Patient SpO2 probe disconnected	critical
`132019`	SpO2: probe n/a	SpO2 probe not available or disconnected	warning
`132020`	SpO2: low perfusion index	SpO2 perfusion index below threshold	warning
`132021`	SpO2: light interference	Ambient light interfering with SpO2 sensor	warning
`132022`	SpO2: sensor error	SpO2 sensor malfunction detected	error
`132023`	SpO2: adapter n/a	SpO2 adapter not available or disconnected	warning
`132024`	Circuit calibration needed	Ventilator circuit requires calibration	warning
`132025`	SpO2: poor signal	SpO2 signal quality too low	warning
`132026`	Check flow sensor tubing	Flow sensor tubing disconnected	warning
`132027`	Check flow sensor tubing	Pdiff sensor disconnected	warning
`132028`	Flow sensor calibration needed	Flow sensor requires calibration (low priority)	warning
`133001`			unknown
`133002`	Inspiratory volume limitation	Tidal volume exceeds set limit	warning
`133003`	High pressure	Airway pressure exceeds limit	error
`133004`	Check for blockage	High pressure detected at patient interface	error
`133005`	Check for blockage	Medium pressure detected at patient interface	warning
`141001`	Pressure limitation	Pressure limiting function active	info
`141002`	Vt high	Tidal volume exceeds upper alarm threshold	warning
`141003`	Vt low	Tidal volume falls below lower alarm threshold	warning
`141004`	High minute volume	Minute ventilation exceeds alarm threshold	warning
`141005`	Low minute volume	Minute ventilation falls below alarm threshold	warning
`141006`	High frequency	Respiratory frequency exceeds alarm threshold	warning
`141007`	Low frequency	Respiratory frequency falls below alarm threshold	warning
`141008`	High oxygen	Oxygen concentration exceeds alarm threshold	warning
`141009`	Low oxygen	Oxygen concentration falls below alarm threshold	error
`141010`	Apnea	Patient apnea detected	critical
`141011`	Apnea ventilation ended	Apnea ventilation mode terminated	warning
`141012`	Apnea ventilation	Apnea backup ventilation activated	error
`141013`	High pressure during sigh	High pressure measured during sigh breath	error
`141014`	Flip the flow sensor	Flow sensor orientation incorrect	error
`141016`	Disconnection on ventilator side	Ventilator side circuit disconnected	critical
`141017`	Disconnection on patient side	Patient side circuit disconnected	critical
`141018`	Exhalation obstructed	Exhalation flow blocked or obstructed	error
`141019`	IRV	Inverse ratio ventilation mode active	info
`141020`	ASV: Cannot meet target	ASV unable to reach target ventilation	warning
`141021`	Pressure limit has changed	ASV pressure limit adjusted automatically	info
`141023`	External flow sensor failed	External flow sensor malfunction detected	error
`141024`	Low pressure	Airway pressure falls below lower threshold	warning
`141025`	PetCO2 high	End-tidal CO2 exceeds alarm threshold	warning
`141026`	PetCO2 low	End-tidal CO2 falls below alarm threshold	warning
`141027`	Suctioning maneuver	Suctioning procedure initiated	info
`141028`	Performance limited by high altitude	Ventilator at high altitude operation limit	warning
`141029`	High SpO2	Oxygen saturation exceeds alarm threshold	warning
`141030`	Low SpO2	Oxygen saturation falls below alarm threshold (medium)	warning
`141031`	High pulse	Pulse rate exceeds alarm threshold	warning
`141032`	Low pulse	Pulse rate falls below alarm threshold	warning
`141033`	High PI	Perfusion index exceeds alarm threshold	warning
`141034`	Low PI	Perfusion index falls below alarm threshold	warning
`141035`	High SpHb	Hemoglobin saturation exceeds alarm threshold	warning
`141036`	Low SpHb	Hemoglobin saturation falls below alarm threshold	warning
`141037`	High SpCO	Carboxyhemoglobin exceeds alarm threshold	warning
`141038`	Low SpCO	Carboxyhemoglobin falls below alarm threshold	info
`141039`	High SpMet	Methemoglobin exceeds alarm threshold	warning
`141040`	Low SpMet	Methemoglobin falls below alarm threshold	info
`141041`	Low SpO2	Oxygen saturation falls below alarm threshold (high)	critical
`141043`	Ventilation adjustment OFF	Automatic ventilation adjustment disabled	info
`141044`	Oxygenation adjustment OFF	Automatic oxygenation adjustment disabled	info
`141045`	Ventilation Controller at limit	Ventilation control algorithm at upper limit	warning
`141046`	Oxygenation Controller at limit	Oxygenation control algorithm at upper limit	warning
`141047`	High flow	Gas flow exceeds alarm threshold in nCPAP mode	warning
`141048`	Obstruction	Circuit obstruction detected	error
`141049`	High flow	Gas flow exceeds alarm threshold	warning
`141050`	Sensor simulation active	Ventilator in sensor simulation mode	info
`141051`	High PEEP	PEEP exceeds alarm threshold	warning
`141052`	Loss of PEEP	PEEP falls below set value	error
`141053`	FiO2 set to 100% due to low SpO2	Oxygen concentration automatically set to maximum	critical
`141054`	Recruitment in progress	Lung recruitment maneuver active	info
`141055`	Oxygen control limit exceeded	Oxygen delivery exceeds control algorithm limit	warning
`141056`	SBT aborted	Spontaneous breathing trial terminated	warning
`141057`	SBT successfully fulfilled	Spontaneous breathing trial completed successfully	info
`141058`	High PVI	Pleth variability index exceeds alarm threshold	warning
`141059`	Low PVI	Pleth variability index falls below alarm threshold	info
`141060`	Check flow sensor for water	Water detected in flow sensor circuit	warning
`141061`	Check flow sensor for water	Water detected in flow sensor circuit (high priority)	error
`141062`	SpeakValve ON	Speaking valve compatibility mode active	info
`141063`	SpeakValve OFF	Speaking valve compatibility mode inactive	info
`141064`	Vt low	Tidal volume falls below lower alarm threshold (high priority)	error
`141065`	Check for blockage	Patient interface blockage suspected	error
`141066`	Maximum leak compensation	Leak compensation at maximum limit	error
`141067`	Oxygen adjustment OFF	Closed-loop FiO2 adjustment disabled	info
`141068`	Oxygen controller at limit	Closed-loop FiO2 controller at upper limit	warning
`141069`	Oxygen msg limit exceeded	Closed-loop FiO2 oxygen message limit exceeded	warning
`141070`	CPR ON	Cardiopulmonary resuscitation mode active	critical
`141071`	PetCO2 target range changed	PetCO2 target range modified	info
`141072`	Check Plimit	Pressure limit requires attention	warning
`200000`	Patient alarms related to temperature, battery, valves, sensors	Detected condition in temperature, battery status, valve operation, or sensor readings	unknown
`200000`	Technical events - non-critical system events or warnings	Technical system events detected during operation	warning
`231001`	Technical event: Pressure controller pressure low	Pressure controller detects low pressure condition	error
`231002`	Technical event: Pressure controller pressure high	Pressure controller detects high pressure condition	error
`231003`	Technical event: Flow controller flow low	Flow controller detects low flow condition	error
`231004`	Technical event: Flow controller flow high	Flow controller detects high flow condition	error
`231005`	Technical event: Inspiration valve leak	Inspiration valve detects leak condition	error
`231006`	Oxygen supply failed	Oxygen flow below required level	error
`231007`	Technical event: O2 controller flow high	O2 controller detects high flow condition	error
`231008`	Technical event: O2 valve leak	O2 valve detects leak condition	error
`231009`	Technical event: Blower controller speed low	Blower controller detects low speed condition	error
`231010`	Technical event: Blower controller speed high	Blower controller detects high speed condition	error
`231011`	Vent outlet temperature high	Temperature sensor detects high outlet temperature	warning
`231012`	Technical event: Qvent flow sensor defect	Qvent flow sensor malfunction detected	error
`231013`	Technical event: QO2 flow sensor defect	QO2 flow sensor malfunction detected	error
`231014`	Technical event: Ambient valve error	Ambient valve malfunction detected	error
`231015`	Autozero Pvent control OK	Autozero procedure completed successfully	info
`231016`	Autozero Pvent control out of range	Autozero calibration failed	warning
`231017`	Blower service required	Blower maintenance interval reached or malfunction detected	warning
`231018`	Technical event: Self-test with error	Power-on self-test or periodic self-test failed	error
`231019`	Technical event: Inspiration valve sensor defect	Inspiration valve sensor malfunction detected	error
`231020`	Technical event: Regulator data log on	Data logging feature activated	info
`231021`	O2 presence check failed	O2 detection circuit detects absence of oxygen	warning
`231022`	Technical event: Expiration valve pressure sensor defect	Expiration valve pressure sensor malfunction detected	error
`231023`	Technical event: Invalid flow sensor	Flow sensor configuration or detection failed	error
`231024`	Expiration valve cover adult	Adult expiration valve cover detected	info
`231025`	Expiration valve cover neo	Neonatal expiration valve cover detected	info
`231026`	Expiration valve cover invalid	Unknown or invalid expiration valve cover detected	error
`231027`	Wrong expiratory valve	Expiration valve mismatch detected	error
`231028`	Pressure controller flow high	Pressure controller detects excessive flow	warning
`231029`	Autozero Pexpiration valve OK	Expiration valve autozero completed successfully	info
`231030`	Autozero Pexpiration valve error	Expiration valve autozero failed	warning
`231031`	Expiration valve cover universal	Universal expiration valve cover detected	info
`231032`	Technical event: Expiration valve disconnected	Expiration valve connection lost or missing	error
`231033`	Technical event: Blower controller speed limited	Blower speed limited by controller	warning
`231034`	Tube resonance measurement OK	Tube resonance measurement completed successfully	info
`231035`	Tube resonance measurement error	Tube resonance measurement failed	warning
`231036`	Technical event: Pvent pressure sensor defect	Pvent pressure sensor malfunction detected	error
`231040`	Calibrate Pvent control OK	Pvent pressure control calibration completed successfully	info
`231041`	Calibrate Pvent control error	Pvent pressure control calibration failed	error
`231044`	Calibrate expiration valve OK	Expiration valve calibration completed successfully	info
`231045`	Calibrate expiration valve error	Expiration valve calibration failed	error
`231046`	Calibrate inspiration/expiration valve OK	Inspiration/expiration valve calibration completed successfully	info
`231047`	Calibrate inspiration/expiration valve error	Inspiration/expiration valve calibration failed	error
`231099`	Communication check	Inter-processor or system communication check	info
`232001`	Pressure sensor tolerance	Pressure sensor reading out of specification	warning
`232002`	Technical event: Pvent monitor sensor defect	Pvent monitor sensor malfunction detected	error
`232003`	Technical event: Paw sensor defect	Airway pressure sensor malfunction detected	error
`232004`	Pressure not released	System pressure not relieved as expected	error
`232005`	Technical event: Blower hot	Blower temperature exceeds limit	warning
`232006`	Technical event: Blower temperature sensor defect	Blower temperature sensor malfunction detected	error
`232007`	Check flow sensor tubing	Flow sensor tubing malfunction or blockage detected	warning
`232008`	Technical event: Pambient sensor defect	Ambient pressure sensor malfunction detected	error
`232009`	Pvent autozero valve error	Pvent autozero valve malfunction detected	warning
`232010`	Pvent autozero valve missing	Pvent autozero valve not detected	error
`232011`	Proximal autozero valve error	Proximal autozero valve malfunction detected	warning
`232012`	Proximal autozero valve missing	Proximal autozero valve not detected	error
`232013`	Distal autozero valve error	Distal autozero valve malfunction detected	warning
`232014`	Distal autozero valve missing	Distal autozero valve not detected	error
`232015`	Proximal/distal autozero valve missing	Proximal or distal autozero valve not detected	error
`232016`	Proximal/distal autozero valve error	Proximal or distal autozero valve malfunction detected	warning
`232017`	Autozero Pvent monitor OK	Pvent monitor autozero completed successfully	info
`232018`	Autozero Pvent monitor out of range	Pvent monitor autozero failed	warning
`232019`	Autozero Pvent control OK	Pvent control autozero completed successfully	info
`232020`	Autozero Pvent control out of range	Pvent control autozero failed	warning
`232022`	Autozero Paw out of range	Airway pressure autozero failed	warning
`232024`	Autozero Qaw out of range	Airway flow autozero failed	warning
`232025`	Autozero Paw/Qaw OK	Airway pressure and flow autozero completed successfully	info
`232026`	Autozero Paw/Qaw out of range	Airway pressure and flow autozero failed	warning
`232027`	Device temperature high	Internal device temperature exceeds safe operating limit	warning
`232028`	Technical event: Filter pressure high	Filter inlet pressure exceeds limit	warning
`232029`	Technical event: Tinst sensor defect	Temperature sensor malfunction detected	error
`232030`	Technical event: Clock error	Real-time clock malfunction detected	warning
`232031`	FiO2 calibration error	FiO2 sensor calibration failed	warning
`232032`	FiO2 calibration OK	FiO2 sensor calibration completed successfully	info
`232034`	Replace O2 sensor	O2 sensor defect or end-of-life detected	error
`232035`	Technical event: Pfilter sensor defect	Filter pressure sensor malfunction detected	error
`232036`	CO2 calibration error	CO2 sensor calibration failed	warning
`232037`	CO2 calibration OK	CO2 sensor calibration completed successfully	info
`232038`	CO2 calibration needed	CO2 sensor requires periodic recalibration	warning
`232040`	Quick disconnection detected	Gas supply line disconnection detected	info
`232041`	CO2 calibration start error	CO2 calibration procedure failed to start	warning
`232042`	CO2 calibration start OK	CO2 calibration procedure started successfully	info
`232043`	Quick reconnection detected	Gas supply line reconnected	info
`232044`	SpO2 sensor error	SpO2 sensor malfunction detected	warning
`232045`	Technical event: SpO2 sensor settings error	SpO2 sensor configuration invalid or missing	error
`232046`	Autozero expiration valve OK	Expiration valve autozero completed successfully	info
`232047`	Autozero expiration valve error	Expiration valve autozero failed	warning
`232048`	Autozero proximal valve leak	Proximal valve leak detected during autozero	warning
`232049`	Autozero distal valve leak	Distal valve leak detected during autozero	warning
`232050`	Pvent monitor calibration error	Pvent monitor calibration failed	warning
`232051`	Pvent monitor calibration OK	Pvent monitor calibration completed successfully	info
`232052`	Paw calibration error	Airway pressure calibration failed	warning
`232053`	Paw calibration OK	Airway pressure calibration completed successfully	info
`232054`	Qaw calibration error	Airway flow calibration failed	warning
`232055`	Qaw calibration OK	Airway flow calibration completed successfully	info
`232056`	Technical event: Pambient/Pfilter mismatch	Ambient and filter pressure sensor values inconsistent	warning
`232057`	Technical event: SpO2 sensor change failed	SpO2 sensor replacement or configuration change failed	error
`232058`	Paux sensor defect	Auxiliary pressure sensor malfunction detected	error
`232059`	Paux calibration error	Auxiliary pressure sensor calibration failed	warning
`232060`	Paux calibration OK	Auxiliary pressure sensor calibration completed successfully	info
`232061`	FiO2 calibration start error	FiO2 calibration procedure failed to start	warning
`232062`	FiO2 calibration start OK	FiO2 calibration procedure started successfully	info
`232063`	Qaw and tube calibration at flow timed out	Flow and tube calibration procedure exceeded time limit	warning
`232064`	Qaw and tube calibration at flow passed	Flow and tube calibration procedure completed successfully	info
`232065`	Qaw and tube calibration at flow failed	Flow and tube calibration procedure failed	error
`232099`	Communication check	Inter-processor or system communication check	info
`233001`	Technical event: Autozero Pvent monitor fail	Pvent monitor autozero procedure failed	error
`233002`	Technical event: Autozero Pvent control fail	Pvent control autozero procedure failed	error
`233008`	Aerogen nebulizer disconnected	Aerogen nebulizer is physically disconnected from the ventilator	warning
`234001`	Loudspeaker defective	Speaker hardware failure detected during startup or operation	error
`241001`	Replace HEPA filter	HEPA filter maintenance interval exceeded or filter clogged	warning
`241002`	Release valve defective	Tightness test detects release valve malfunction	error
`243004`	Buzzer defective	Buzzer test fails at startup or buzzer produces no sound	error
`243007`	Realtime clock failure	RTC chip failure or battery depleted during power loss	error
`243010`	Panel connection lost	Communication link between main board and control panel fails	error
`244001`	Loss of external power	Mains power supply disconnected or failed	warning
`244002`	Battery 1: Calibration required	Battery 1 capacity measurement indicates need for recalibration	warning
`244003`	Battery 2: Calibration required	Battery 2 capacity measurement indicates need for recalibration	warning
`244004`	Battery 1: Temperature high	Battery 1 temperature exceeds safe operating range during charge/discharge	warning
`244005`	Battery 2: Temperature high	Battery 2 temperature exceeds safe operating range during charge/discharge	warning
`244006`	Battery low	Battery charge level drops below high-priority threshold during operation	warning
`244007`	Battery power loss	Battery becomes disconnected or fails suddenly during operation	critical
`244008`	Battery 1: Wrong battery	Battery 1 type or model does not match system requirements	error
`244009`	Battery 2: Wrong battery	Battery 2 type or model does not match system requirements	error
`244010`	Battery low	Battery charge level drops below low-priority threshold during operation	warning
`244011`	Battery communication error	Battery management system loses communication with battery module	error
`244012`	Battery 1: Defective	Battery 1 self-test fails or capacity measurement indicates failure	error
`244013`	Battery 2: Defective	Battery 2 self-test fails or capacity measurement indicates failure	error
`244015`	Battery low	Battery charge level drops below medium-priority threshold during operation	warning
`244016`	Battery 1: Replacement required	Battery 1 has reached end of service life or unreliable performance detected	warning
`244017`	Battery 2: Replacement required	Battery 2 has reached end of service life or unreliable performance detected	warning
`244022`	Continue charging battery	Battery charging in progress, normal state during AC power connected	info
`246001`	Preventive maintenance required	Equipment operating hours or calendar interval exceeds maintenance schedule	warning
`246003`	Fan failure	Cooling fan stops or runs abnormally, temperature control compromised	error
`246016`	Touch not functional	Touch screen detects no response to finger contact or self-test fails	error
`246020`	Loudspeaker defective	Speaker hardware fails during HMI self-test or audio output ceases	error
`249001`	Options not found	System cannot read or locate option configuration file at startup	error
`249012`	Technical event	Last setting config file error	unknown
`249013`	Technical event	Research config file error	unknown
`249020`	Invalid communication board	Option board not recognized	error
`249021`	Check hardware compatibility	Hardware compatibility issue detected	warning
`250001`	Check humidifier communication	Humidifier communication failure	error
`250002`	Humidifier water low	Water level below threshold	warning
`250003`	Humidifier chamber temp low	Chamber temperature below setpoint	warning
`250004`	Humidifier Y-piece temp low	Y-piece temperature below setpoint	warning
`250005`	Humidifier check right tube	Right heating tube fault detected	warning
`250006`	Humidifier check left tube	Left heating tube fault detected	warning
`250007`	Humidifier check chamber	Chamber component fault detected	error
`250008`	Check humidifier	General humidifier fault	error
`250009`	Humidifier error	Unspecified humidifier error	error
`250010`	Humidifier water high	Water level above threshold	unknown
`250011`	Humidifier chamber temp high	Chamber temperature above setpoint	warning
`250012`	Humidifier Y-piece temp high	Y-piece temperature above setpoint	warning
`250013`	Humidifier tilt	Humidifier tilted or misaligned	unknown
`250014`	Check humidifier	Humidifier fault detected	error
`250015`	Check breathing circuit limbs	Breathing circuit limb fault detected	warning
`251001`	Check IntelliCuff communication	IntelliCuff communication loss	error
`251002`	Check IntelliCuff	IntelliCuff low fault	warning
`251003`	Cannot turn off IntelliCuff	IntelliCuff power-off failure	error
`251004`	Check IntelliCuff	IntelliCuff battery low	warning
`251005`	Cuff pressure high	Endotracheal cuff pressure exceeds limit	warning
`251006`	Cuff deflated	Cuff deflation detected	warning
`251007`	Cuff leak	Cuff leak detected	warning
`251008`	Check IntelliCuff	IntelliCuff medium fault	warning
`251009`	Cuff leak	IntelliCuff disconnection detected	warning
`251010`	Check IntelliCuff	IntelliCuff error	error
`251011`	Check IntelliCuff	IntelliCuff battery critical	critical
`251012`	Check IntelliCuff	IntelliCuff high fault	error
`251013`	Check IntelliCuff state	IntelliCuff state error	error
`252001`	Check TeslaSpy communication	TeslaSpy communication loss	error
`252002`	Reduce MRI scanner proximity	High magnetic field proximity detected	warning
`252003`	Service required	Magnetic field too high detected	error
`252004`	TeslaSpy defective	TeslaSpy unit fault detected	error
`252005`	TeslaSpy service required	TeslaSpy service condition detected	error
`255001`	Technical event	Percentage minimum volume high test failed	unknown
`255002`	Technical event	Percentage minimum volume high limit incorrect	unknown
`255003`	Technical event	Percentage minimum volume low test failed	unknown
`255004`	Technical event	Percentage minimum volume low limit incorrect	unknown
`255005`	Technical event	PEEP high limit incorrect	unknown
`255006`	Technical event	PEEP high test failed	unknown
`255007`	Technical event	PEEP low limit incorrect	unknown
`255008`	Technical event	PEEP low test failed	unknown
`255009`	Technical event	Oxygen low test failed	unknown
`255010`	Technical event	Oxygen high test failed	unknown
`255011`	Technical event	Percentage minimum volume positive change failed	unknown
`255012`	Technical event	Percentage minimum volume negative change failed	unknown
`255013`	Technical event	PEEP positive change test failed	unknown
`255014`	Technical event	PEEP negative change test failed	unknown
`255015`	Technical event	Oxygen positive change test failed	unknown
`255016`	Technical event	Oxygen negative change test failed	unknown
`255017`	Technical event	Recruitment maneuver runtime exceeded	unknown
`255018`	Technical event	Simulation supervision test failed	unknown
`255019`	Technical event	Percentage minimum volume high fine test failed	unknown
`255020`	Technical event	Percentage minimum volume high fine limit wrong	unknown
`255021`	Technical event	Percentage minimum volume low fine test failed	unknown
`255022`	Technical event	Percentage minimum volume low fine limit wrong	unknown
`255023`	Oscillation Oxygen	Oxygen parameter oscillation detected in closed-loop	warning
`255024`	Oscillation PEEP/CPAP	PEEP parameter oscillation detected in closed-loop	warning
`255025`	Oscillation %MinVol	Percentage minimum volume oscillation in closed-loop	warning
`255026`	Technical event	Data mismatch detected	unknown
`255027`	Technical event	PetCO2 value frozen in closed-loop	unknown
`255028`	Technical event	SpO2 value frozen in closed-loop	unknown
`255029`	Technical event	Spontaneous breathing frequency frozen	unknown
`255030`	Technical event	Closed-loop FiO2 oxygen low test failed	unknown
`255031`	Technical event	Closed-loop FiO2 oxygen high test failed	unknown
`255032`	Technical event	Closed-loop FiO2 oxygen positive change failed	unknown
`255033`	Technical event	Closed-loop FiO2 oxygen negative change failed	unknown
`255034`	Technical event	Closed-loop FiO2 simulation supervision failed	unknown
`255035`	Technical event	Closed-loop FiO2 SpO2 value frozen	unknown
`281001`	Firmware mismatch	PLD firmware version incompatible	error
`281002`	JTAG not working	JTAG programming interface not responding	error
`281003`	Check hardware compatibility	Hardware compatibility issue detected	warning
`283001`	Technical event	Ventilator GUI startup failed	unknown
`283003`	Language not loaded	Language file failed to load	warning
`283005`	Settings file error	Setup configuration file error	error
`283008`	Check settings	Settings configuration error detected	warning
`283009`	Self test failed	Power-on self test failure	error
`283010`	No ventilation after power-fail	Ventilation not resumed after power loss	critical
`283011`	Check IntelliCuff state	IntelliCuff mode error	error
`283012`	Panel settings file error	Panel setup configuration file error	error
`284001`	Startup failed	Service GUI startup failure	error
`284002`	Technical event	Service alarm high priority	unknown
`284003`	Technical event	Service alarm medium priority	unknown
`284004`	Technical event	Service alarm low priority	unknown
`284005`	Flow sensor calibration needed	Flow sensor requires recalibration	warning
`284006`	Restart device to enable Tests/Calib	Device restart required for tests or calibration	info
`285001`	Technical event	Alarm lamp error indicator defect	unknown
`285002`	Technical event	Alarm lamp warning indicator defect	unknown
`285003`	Technical event	Backlight defect detected	unknown
`285004`	Function key not operational	Function key malfunction detected	warning
`285005`	Touch not functional	Touchscreen malfunction detected	error
`291001`	Remote communication error (COM1)	COM1 port communication error	error
`291002`	Remote communication error (COM2)	COM2 port communication error	error
`291003`	Remote communication timeout (COM1)	COM1 communication timeout	warning
`300000`	Technical fault - ventilator enters safety mode	Fatal technical failure detected during operation	critical
`332001`	Safety ventilation activated due to flow sensor error	Breath management module detects flow sensor malfunction	critical
`341008`	Safety ventilation activated due to ventilation flow sensor defect	Ventilation monitoring controller detects flow sensor failure	critical
`341009`	Safety ventilation activated due to pressure sensor defect	Ventilation monitoring controller detects pressure sensor failure	critical
`346054`	Safety ventilation activated due to detected safety failure	Low-level system detects critical safety condition	critical
`383008`	Technical fault due to basic startup failure	Ventilator GUI fails basic startup sequence	error
`383009`	Technical fault due to screen failure	Ventilator GUI screen or display initialization fails	error
`383012`	Technical fault due to self-test failure	Ventilator GUI self-test sequence fails during startup	error
`384001`	Technical fault due to basic startup failure in settings GUI	Settings GUI fails basic startup sequence	error
`400000`	Technical fault - ventilator enters ambient state	Serious technical fault risking compromise of safe ventilation	critical
`431001`	Blower fault	Blower hardware failure or malfunction	critical
`431002`	Technical fault: Blower disconnected	Blower connection lost or unplugged	error
`431004`	Technical fault: Inspiration valve over-current	Inspiration valve drawing excessive current	error
`431006`	Technical fault: Expiration valve over-current	Expiration valve drawing excessive current	error
`431007`	Technical fault: Ventilation output over-temperature	Outlet temperature exceeds safe limit	error
`431008`	Technical fault: Ventilation flow sensor error	Flow sensor malfunction or measurement failure	error
`431009`	Technical fault: Oxygen flow sensor error	O2 flow sensor malfunction or measurement failure	error
`431010`	Technical fault: Control REGSPI timeout	Control register SPI communication timeout	error
`431011`	Technical fault: Monitor REGSPI timeout	Monitor register SPI communication timeout	error
`431012`	Technical fault: Flow sensor measurement imprecise	Flow sensor output out of expected range or unstable	warning
`431013`	Technical fault: Calibration read failed	Unable to read calibration data from memory	error
`431014`	Technical fault: Inspiration valve sensor defect	Inspiration valve position sensor failure	error
`431015`	Technical fault: Emergency off failed	Emergency stop function did not execute properly	critical
`431017`	Technical fault: Inspiration valve disconnected	Inspiration valve connector unplugged or lost connection	error
`432001`	Technical fault: Blower over-temperature	Blower motor temperature exceeds safe operating limit	error
`432002`	Technical fault: Instrument over-temperature	Internal instrument temperature exceeds safe limit	error
`432003`	Technical fault: Pressure not released to ambient	System unable to release pressure to atmosphere during ambient mode	error
`433001`	Technical fault: Breath monitoring tick timeout	Breath monitoring process did not respond within timeout period	error
`433002`	Technical fault: Control tick timing error	Control loop timing violation or delay exceeds tolerance	error
`443001`	Technical fault: Watchdog failed LLS	Low-level system watchdog timer failed to reset	critical
`444001`	Battery totally discharged	Battery charge level reached zero	critical
`444004`	Technical fault: Voltage out of tolerance	Power supply voltage outside acceptable operating range	error
`444005`	Technical fault: Shutdown failed	System unable to complete normal shutdown sequence	error
`446001`	Technical fault: CPU temperature critical	Processor temperature exceeds maximum safe operating temperature	critical
`446002`	Technical fault: Safety failed	Safety system self-test or monitoring failed	critical
`446003`	Technical fault: Watchdog failed GD	Gas delivery module watchdog timeout occurred	critical
`446004`	Technical fault: Watchdog failed GD valve regulator	Gas delivery valve regulator watchdog timeout	critical
`446005`	Technical fault: Watchdog failed GD blower regulator	Gas delivery blower regulator watchdog timeout	critical
`446006`	Technical fault: Watchdog failed GD monitoring	Gas delivery monitoring watchdog timeout	critical
`446007`	Technical fault: Watchdog failed GD valve log	Gas delivery valve logging watchdog timeout	error
`446008`	Technical fault: Watchdog failed GD blower log	Gas delivery blower logging watchdog timeout	error
`446009`	Technical fault: Watchdog failed GD MF measure	Gas delivery measurement function watchdog timeout	error
`446010`	Technical fault: Watchdog failed GD GPIO fault input	Gas delivery GPIO fault monitoring watchdog timeout	error
`446011`	Technical fault: Watchdog failed BM	Breath monitoring module watchdog timeout	critical
`446012`	Technical fault: Watchdog failed BM gas delivery communication	Breath monitoring to gas delivery communication watchdog timeout	critical
`446013`	Technical fault: Watchdog failed BM hardware control	Breath monitoring hardware control watchdog timeout	critical
`446014`	Technical fault: Watchdog failed BM BPG client receiver	Breath monitoring BPG client receiver watchdog timeout	critical
`446015`	Technical fault: Watchdog failed BM BPG server receiver	Breath monitoring BPG server receiver watchdog timeout	critical
`446016`	Technical fault: Watchdog failed BM breath data calculation	Breath data calculation watchdog timeout	critical
`446017`	Technical fault: Watchdog failed BM MF measure	Breath monitoring measurement function watchdog timeout	error
`446018`	Technical fault: Watchdog failed BPG	Breath pattern generation module watchdog timeout	critical
`446019`	Technical fault: Watchdog failed BPG GD client receiver	BPG gas delivery client receiver watchdog timeout	critical
`446020`	Technical fault: Watchdog failed BPG MF measure	BPG measurement function watchdog timeout	error
`446021`	Technical fault: Exception happened	Unhandled software exception occurred in system	critical
`446022`	Technical fault: Voltage error	Internal voltage supply anomaly detected	critical
`446023`	Technical fault: Watchdog failed LLS workload	Low-level system workload monitoring watchdog timeout	critical
`446024`	Technical fault: Am 3V3 error	3.3V analog supply failure detected	critical
`446025`	Technical fault: Am ADC error	Analog-to-digital converter failure detected	error
`446026`	Technical fault: Am Vref error	Analog reference voltage failure detected	error
`446028`	Technical fault: Clock error	System clock or timing reference failure	critical
`446029`	Technical fault: Ambient failure detected	Ambient monitoring system detected a critical failure	error
`446030`	Technical fault: Am watchdog occurred	Analog module watchdog timeout occurred	error
`446031`	Technical fault: Restart ventilation failed	System unable to restart ventilation after ambient state	critical
`446032`	Technical fault: Patient vent overpressure	Patient ventilation outlet pressure exceeds maximum safe limit	critical
`481001`	Technical fault: First run migration error	Startup configuration migration failed	error
`481002`	Technical fault: CRC error	Data integrity check (CRC) failed on stored data	error
`481003`	Unknown part number	System encountered unrecognized part or configuration ID	error
`481004`	Technical state failed	System technical state verification failed at startup	error
`481005`	Technical fault: Synchronization error	System module synchronization failed during startup	error
`481006`	Technical fault: Reconnect startup type error	Startup type or mode recovery failed	error
`481007`	Technical fault: Reconnect accept error	System reconnection handshake failed during startup	error
`483001`	Technical fault: Ventilator GUI startup basic startup failure	Ventilator GUI failed basic startup checks	error
`483002`	Technical fault: Ventilator GUI startup screen failure	Ventilator GUI display screen failed to initialize	error
`483003`	Technical fault: Ventilator GUI startup load GUI basics failure	Ventilator GUI basic components failed to load	error
`483004`	Technical fault: Ventilator GUI startup self-test prolog failure	Ventilator GUI self-test prolog phase failed	error
`483005`	Technical fault: Ventilator GUI startup self-test failure	Ventilator GUI self-test execution failed	error
`483006`	Technical fault: Ventilator GUI startup self-test epilog failure	Ventilator GUI self-test epilog phase failed	error
`483007`	Technical fault: Ventilator GUI startup loading bitmaps failure	Ventilator GUI failed to load display bitmaps or graphics	error
`483008`	Technical fault: Ventilator GUI startup initialization failure	Ventilator GUI initialization sequence failed	error
`484001`	Technical fault: Setting GUI startup basic startup failure	Setting GUI failed basic startup checks	error
`484002`	Technical fault: Setting GUI startup screen failure	Setting GUI display screen failed to initialize	error
`484003`	Technical fault: Setting GUI startup load GUI basics failure	Setting GUI basic components failed to load	error
`484004`	Technical fault: Setting GUI startup self-test prolog failure	Setting GUI self-test prolog phase failed	error
`484005`	Technical fault: Setting GUI startup self-test failure	Setting GUI self-test execution failed	error
`484007`	Technical fault: Setting GUI startup loading bitmaps failure	Setting GUI failed to load display bitmaps or graphics	error
`484008`	Technical fault: Setting GUI startup initialization failure	Setting GUI initialization sequence failed	error
`485001`	Technical fault: Alarming GUI ambient failure detected	Alarming GUI detected system in ambient/unpowered state failure	error
`500000`	System failures invisible to user, internal use only, no user action required	Internal system error detected and managed by ventilator firmware	info
`500000`	Invisible technical fault - internal exception handling	Exception handling during ventilator operation	info
`700000`	Technical fault - ventilator enters safety mode	Fatal technical failure requiring patient safety intervention	critical
`743001`	Technical fault: Watchdog failed LLS	Panel module low-level system watchdog timeout	critical
`743003`	Technical fault: MMI connection lost	Man-machine interface connection lost or disconnected	error
`746001`	Technical fault: Watchdog failed ALR	Panel low-level system watchdog detected ALR module timeout	critical
`746002`	Technical fault: Watchdog failed VGUI	Panel low-level system watchdog detected ventilator GUI timeout	critical
`746003`	Technical fault: Watchdog failed VGUI mode control	Ventilator GUI mode control watchdog timeout on panel	critical
`746004`	Technical fault: Panel error failure detected	Panel hardware or communication error detected	error
`746005`	Technical fault: Exception happened	Unhandled exception in panel module occurred	critical
`746006`	Technical fault: Watchdog failed LLS workload	Panel low-level system workload monitoring watchdog timeout	critical
`746007`	Technical fault: Restart ventilation failed	Panel unable to restart ventilation after ambient state	critical
`783001`	Technical fault: Monitoring channel observation failed	Ventilator GUI monitoring channel failed to update or respond	error
`783002`	Technical fault: Trending channel observation failed	Ventilator GUI trending data channel failed to update	error
`783003`	Technical fault: VMC timeout	Ventilator mode control communication timeout occurred	error
`785001`	Technical fault: Alarming channel observation failed	Alarm channel failed to update or respond in alarming GUI	error
`785002`	Technical fault: Panel error failure detected	Panel error detected in alarming GUI module	error
`785003`	Technical fault: PM channel observation failed	Power management channel failed to update or respond	error
`Check hardware compatibility`	Incompatible combination of hardware components detected during self-test	System detects installed hardware components that are not compatible with each other	critical
`C-SS-NNN`	Alarm codes are structured with alarm class, subsystem, and ID number; C=class, SS=subsystem, NNN=ID	Various conditions trigger different alarm classes and severities based on patient safety impact	unknown
`Exhalation obstructed`	Expiratory valve is blocked or obstruction detected in expiration pathway	Expiratory valve bleed port tubing disconnected, blocked, or valve membrane damaged; blockage applied during test	warning
`Technical state failed`	Technical state cannot be read from EEPROM of a component or after control board replacement	Unit fails self-test due to corrupt or unreadable technical state	critical

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ServiceForge knowledge base record. Field-unverified unless technicians confirmed it. A teaching summary of the record, not a service manual. Export 2026-10-14.