Ventilators

Medtronic Puritan Bennett 980: troubleshooting and error codes

The ServiceForge knowledge base holds 80 documented symptoms for the Medtronic Puritan Bennett 980, with 108 ranked causes, 134 diagnostic checks with test points and expected values, and 369 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

Proximal flow system alert patient safety

Proximal pressure or flow subsystem alert triggered during SST diagnostics

Ranked causes

1. SOL2 malfunction or failure (common)
2. Improper tubing connection from SOL2 to proximal flow system (common)
3. R4 resistor missing (rare)
4. Improper connections at proximal flow accumulator (occasional)
5. Options host PCBA failure (rare)
6. Proximal flow PCBA failure (rare)

First check

Wait for proximal unit to enter idle mode

Expected: Prox in idle mode

11 more checks with pass and fail actions, 6 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Compressor accumulator pressure too low

EST diagnostic code FE2309 reported; compressor fails to build or maintain target accumulator pressure.

Ranked causes

1. Kinked or leaking pressure transducer tubing (common)
2. Improperly connected compressor-to-BDU interconnect hose (common)
3. Restricted inlet muffler (occasional)
4. Faulty compressor interface PCBA (occasional)
5. Faulty compressor assembly (rare)

First check

Inspect pressure transducer tubing for kinks or leaks

Test point: Pressure transducer tubing and connections
Expected: Tubing clear, no kinks, no leaks visible

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

Proximal flow sensor alert AS0707

Purge suspended, user prompted to remove inspiratory filter and connect tubing.

Ranked causes

1. Proximal flow sensor tubing connection improper (common)
2. Proximal flow PCBA connection loose (occasional)
3. Proximal flow PCBA failure (rare)
4. Options host PCBA failure (rare)

First check

Run proximal autozero test

Test point: Proximal pressure sensor
Expected: Autozero test passes

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

Short self test (SST) fails

VBS resistance/compliance calculation or leak detection fails; common causes include inadequate gas sources, leaks, or occlusions

Ranked causes

1. Inadequate air or oxygen gas source pressure (common)
2. Leaks in breathing system (common)
3. Occlusions in system (common)
4. Ventilator not at operating temperature (occasional)

First check

Warm up ventilator to operating temperature

Test point: Service mode
Expected: 15 minutes elapsed since entering Service mode

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

SST fails or produces inaccurate results

Short Self Test does not complete successfully or returns incorrect resistance, compliance, or leak detection values

Ranked causes

1. Inadequate air or oxygen gas source pressure (common)
2. Leaks in breathing system (common)
3. Occlusions in breathing system (common)
4. Ventilator not at operating temperature (occasional)

First check

Verify air and oxygen source pressures

Test point: air and oxygen inlets
Expected: 241 kPa to 599 kPa (35 psi to 87 psi), 241–599 kPa

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

Compressor failed to establish stable flow

EST diagnostic code FE2505 reported; compressor unable to produce consistent, stable airflow output.

Ranked causes

1. Damaged o-rings on pneumatic interface manifold (common)
2. Faulty compressor assembly (occasional)
3. Faulty compressor interface PCBA (occasional)

First check

Inspect three o-rings on pneumatic interface manifold

Test point: Pneumatic interface manifold, three o-ring positions
Expected: All o-rings intact, no visible damage or extrusion

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

Compressor Performance error: Target pressure not reached

EST diagnostic code FE2504 reported; compressor cannot achieve target pressure during test.

Ranked causes

1. Leaks or occlusions (common)
2. Faulty compressor interface PCBA (occasional)
3. Faulty compressor assembly (occasional)

First check

Inspect system for leaks or occlusions

Test point: All pressure hoses and connections
Expected: No visible leaks, no obstructions in lines

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

Compressor unable to hold constant accumulator pressure

EST diagnostic code FE2405 reported; compressor builds pressure but cannot maintain it, indicating leakage or regulation failure.

Ranked causes

1. Leaks or occlusions in system (common)
2. Compressor motor not turning on (occasional)
3. Faulty compressor interface PCBA (occasional)

First check

Inspect system for leaks or occlusions

Test point: All pressure hoses and connections
Expected: No visible leaks, no obstructions in lines

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

AC power not detected during compressor performance test

EST diagnostic code FE2524 reported; compressor performance test fails because mains AC power is not being detected or supplied to the ventilator.

Ranked causes

1. No AC power connected (common)
2. AC mains circuit breaker tripped (common)

First check

Verify AC power present at wall outlet

Test point: AC mains outlet
Expected: AC voltage present (nominal 120V or 240V depending on region)
Tools: DMM or power tester

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

Alarm silence key LED failure AE0808

Audio paused key LED on bezel does not illuminate during off-screen key test.

Ranked causes

1. Alarm silence key LED not functioning (occasional)
2. Ribbon cable between user interface PCBA and touch screen loose (common)

First check

Press audio paused key

Test point: Alarm silence key on bezel
Expected: LED illuminates when pressed

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

Calibration: Atmospheric Pressure

Barometric pressure reading must be entered from external barometer; calibration may fail if incorrect pressure value provided or sensor drift occurs

Ranked causes

1. Incorrect barometric pressure value entered (common)
2. Sensor calibration drift or failure (rare)

First check

Obtain accurate barometric pressure reading from external barometer

Test point: External barometer
Expected: Stabilized reading in mmHg

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

Screen lock key LED failure AE0807

Screen lock key LED on bezel does not illuminate during off-screen key test.

Ranked causes

1. Screen lock key LED not functioning (occasional)
2. Ribbon cable between user interface PCBA and touch screen loose (common)

First check

Press screen lock key

Test point: Screen lock key on bezel
Expected: LED illuminates when pressed

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

AC power not detected high voltage

Flow sensor or circuit pressure test failure; AC mains power not detected

Ranked causes

1. AC power not connected or circuit breaker tripped (common)

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

Calibration: Atmospheric Pressure

Atmospheric pressure sensor calibration verification

Ranked causes

1. Calibration required as part of annual PM (unknown)

First check

Atmospheric Pressure calibration

Test point: Service Mode
Expected: Pass

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

Calibration: Atmospheric pressure transducer

Atmospheric pressure transducer requires calibration after annual or 10,000-hour preventive maintenance

Ranked causes

1. Routine preventive maintenance (common)

First check

Perform ventilator warm-up cycle

Test point: Ventilator startup
Expected: Warm-up completed

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

Calibration: Battery cover slider latch replacement

Replace battery cover slider latch and reattach extension spring

Ranked causes

1. Battery cover slider latch worn or damaged (occasional)

First check

Remove screws from battery cover slider latch retainer

Test point: Two screws on slider latch retainer
Expected: Screws removed while retaining slider latch

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

Calibration: Battery door panel alignment

Align battery door panel to BDU assembly and tighten mounting screws

Ranked causes

1. Battery door panel misalignment or loose screws (common)

First check

Verify battery door panel screws are seated properly

Test point: Top two screws of battery panel door assembly
Expected: Screws fully tightened and flush

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

Calibration: Component Calibration patient safety

Perform component calibrations as specified in Section 4.5.2. Results must be documented on the PVR form.

Ranked causes

1. Component calibration procedure required (common)

First check

Confirm component calibration completion

Test point: PVR form
Expected: Component calibration section completed and signed

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

Calibration: Exhalation Valve

Exhalation valve calibration verification

Ranked causes

1. Calibration required as part of annual PM (unknown)

First check

Exhalation Valve calibration

Test point: Service Mode
Expected: Pass

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

Calibration: Exhalation Valve

Exhalation valve calibration to build valve table; requires gold standard test circuit, proper warm-up time, and EST leak test passage.

Ranked causes

1. Exhalation valve requires calibration (common)

First check

Allow ventilator warm-up time if not at operating temperature from recent usage

Test point: Ventilator operating temperature
Expected: At least 15 minutes warm-up in Service mode

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

Calibration: Exhalation Valve Calibration patient safety

Calibration procedure for exhalation valve on Puritan Bennett 980 ventilator using on-screen prompts in Service mode

Ranked causes

1. System leak or improper test circuit attachment (common)

First check

Ensure exhalation filter condensate vial is secured tightly

Test point: Exhalation filter condensate vial
Expected: Secured tightly

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

Calibration: Extended Self Test (EST) patient safety

Routine EST procedure to verify ventilator function before clinical use. Must complete all tests in sequence without interruption using Run ALL button. All tests must pass with no failures.

Ranked causes

1. Routine EST execution required before clinical use (common)

First check

Ensure adult exhalation filter is installed before running EST

Test point: Exhalation filter connection
Expected: Adult exhalation filter installed

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

Calibration: Flow Sensor

Flow sensor calibration verification

Ranked causes

1. Calibration required as part of annual PM (unknown)

First check

Flow Sensor calibration

Test point: Service Mode
Expected: Pass

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

Calibration: Oxygen sensor

Oxygen sensor requires calibration after maintenance, replacement, or extended self-test

Ranked causes

1. Routine maintenance or oxygen sensor replacement (common)

First check

Perform ventilator warm-up cycle

Test point: Ventilator startup
Expected: Warm-up completed

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

Calibration: Oxygen Sensor

Oxygen sensor calibration verification

Ranked causes

1. Calibration required as part of annual PM (unknown)

First check

Oxygen Sensor calibration

Test point: Service Mode
Expected: Pass / Fail / Limited Use

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

Calibration: Oxygen Sensor Calibration patient safety

Calibration of oxygen sensor performed in normal ventilation mode after ventilator reaches operating temperature

Ranked causes

1. Oxygen sensor needs calibration (unknown)

First check

Allow ventilator to reach operating temperature

Test point: Ventilator warm-up time
Expected: At least 15 minutes in Service mode

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

Calibration: Oxygen sensor installation patient safety

Step-by-step procedure to install a replacement oxygen sensor with proper seating and cable reconnection

Ranked causes

1. Standard replacement procedure (common)

First check

Check o-ring presence

Test point: Oxygen sensor
Expected: O-ring present

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

Calibration: PTS 2000 preparation patient safety

Setup procedure for PTS 2000 sensor in ventilator circuit prior to performance verification or calibration checks.

Ranked causes

1. PTS 2000 must be integrated into patient circuit for measurement (common)

First check

Install PTS 2000 sensor in circuit

Test point: Patient circuit connection
Expected: PTS 2000 connected in series with two longest sections per Figure 11

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

Calibration: SST temperature requirement

Ventilator warm-up procedure to ensure accurate SST results

Ranked causes

1. Cold ventilator from recent usage (unknown)

First check

Allow warm-up time

Test point: Service mode
Expected: 15 minutes elapsed

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

Calibration: Touch screen

Touch screen requires calibration after annual or 10,000-hour preventive maintenance

Ranked causes

1. Routine preventive maintenance (common)

First check

Perform ventilator warm-up cycle

Test point: Ventilator startup
Expected: Warm-up completed

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

Calibration: Touch Screen

Touch screen calibration verification

Ranked causes

1. Calibration required as part of annual PM (unknown)

First check

Touch Screen calibration

Test point: Service Mode
Expected: Pass

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

Calibration: Ventilator date, time and settings after coin battery replacement

After replacing coin batteries, ventilator date/time and programmed settings must be verified to persist across power cycles to ensure correct operation.

Ranked causes

1. Coin batteries replaced, requiring date/time reset (common)

First check

Power on ventilator and enter date/time configuration

Test point: Configuration icon (wrench) and Date/Time Change tab
Expected: Date/Time Change tab accessible 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: Ventilator Performance Verification patient safety

Complete electrical safety testing and component calibration before performance verification. Document results on PVR form with software/firmware versions, serial numbers, and safety test measurements.

Ranked causes

1. Verification procedure setup (common)

First check

Ground resistance measurement

Test point: Ground integrity
Expected: <0.20 Ω, <0.20

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

Calibration: Ventilator Setup for PTS 2000 patient safety

Warm up and configure ventilator with exhalation filter, inspiratory filter, and PTS 2000 sensor in patient circuit; connect gas and power supplies; verify indicators and battery; perform EST, SST and calibrations.

Ranked causes

1. Ventilator requires warm-up and configuration before calibration (common)

First check

Warm up ventilator in Service mode

Test point: Service mode indicator
Expected: Minimum 15 minutes elapsed

5 more checks with pass and fail actions, 6 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

EST test failure or diagnostic code patient safety

EST test fails to complete or returns a diagnostic code indicating a problem detected during testing.

Ranked causes

1. One or more EST tests failed or diagnostic code returned (occasional)

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

EV performance unable to establish stable flow

EV performance test failure; unable to establish stable exhalation flow

Ranked causes

1. EVQ fault, fouled, or flow sensor miscalibration (common)

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

Exhalation auto zero solenoid not operational

Circuit pressure test failure; exhalation pressure offset solenoid not functioning

Ranked causes

1. Leaks, disconnects, occlusions, or solenoid/PCBA fault (common)

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

Exhalation filter unable to establish stable flow

Exhalation filter test failure; unable to establish stable flow with filter installed

Ranked causes

1. Exhaust filter fault or EVQ issue (common)

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

Exhalation flow sensor out of range

Flow sensor cross-check failure; exhalation flow sensor reading out of acceptable range

Ranked causes

1. Patient circuit leaks, improper EVQ seating, or faulty EVQ (common)

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

Exhalation valve not calibrated

EV performance test failure; exhalation valve requires calibration

Ranked causes

1. Exhalation valve calibration not completed (common)

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

Exhalation valve pressure out of range

EV performance test failure; measured pressure outside acceptable range

Ranked causes

1. Exhaust filter occluded, o-ring missing, EVQ fault, or F5 filter issue (common)

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

Expiratory zero offset out of range

Circuit pressure test failure; expiratory zero pressure offset exceeds acceptable limits

Ranked causes

1. Pressure sensor calibration drift (common)

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

Extended self test (EST) fails

EST verifies ventilator operational subsystem integrity; failure indicates possible system component or functional issue

Ranked causes

1. SST not passing (indicates underlying system problem) (common)

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

Flow sensor calibration failure

Calibration procedure fails to complete successfully

Ranked causes

1. System leak present (common)

First check

Inspect exhalation filter for leaks

Test point: Exhalation filter collector vial and connections
Expected: No leaks detected

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

Ground isolation resistance too low high voltage

Ground isolation resistance measurement fails to meet minimum threshold during electrical safety testing

Ranked causes

1. Faulty assembly, subassembly, cable or harness causing low isolation resistance (unknown)

First check

Measure ground isolation resistance

Test point: DB9 connector female mating face
Expected: > 975 Ω or > 0.975 kΩ, > specified value
Tools: DMM

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

Inspiratory and exhalation pressure difference outside limits

Circuit pressure test failure; inspiratory and exhalation pressures differ beyond acceptable range

Ranked causes

1. Leaks, disconnects, occlusions, or pressure sensor fault (common)

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

Inspiratory and safety valve pressure difference outside limits

Circuit pressure test failure; inspiratory and safety valve pressures differ beyond tolerance

Ranked causes

1. Leaks, disconnects, occlusions, or pressure sensor fault (common)

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

Inspiratory auto zero solenoid not operational

Circuit pressure test failure; inspiratory pressure offset solenoid not functioning

Ranked causes

1. Leaks, disconnects, occlusions, or solenoid/PCBA fault (common)

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

Inspiratory flow sensor out of range

Flow sensor cross-check failure; inspiratory flow sensor reading out of acceptable range

Ranked causes

1. Inadequate source gas supply (common)

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

Inspiratory zero offset out of range

Circuit pressure test failure; inspiratory zero pressure offset exceeds acceptable limits

Ranked causes

1. Pressure sensor calibration drift (common)

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

LVDT temperature out of range

EV performance test failure; motor temperature sensor reading out of range

Ranked causes

1. EVQ or exhalation valve assembly fault (common)

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

Mix flow sensor out of range

Flow sensor cross-check failure; mix flow sensor reading out of acceptable range

Ranked causes

1. Inadequate source gas supply (common)

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

No air supply connected patient safety

SST detects no air input to the system during flow sensor cross check

Ranked causes

1. Air supply line not connected (common)

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

No gas connected

Flow sensor or circuit pressure test failure; no gas supply detected

Ranked causes

1. Air or oxygen supply not connected (common)

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

No oxygen supply connected patient safety

SST detects no oxygen input to the system during flow sensor cross check

Ranked causes

1. Oxygen supply line not connected (common)

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

Oxygen sensor requires replacement patient safety

Oxygen sensor has reached recommended one-year replacement interval or shows signs of malfunction; expiration date on new sensor packaging must not be past installation date

Ranked causes

1. Scheduled maintenance - one year from installation (common)

First check

Verify expiration date on new oxygen sensor packaging

Test point: Sensor packaging
Expected: Installation date must be before or on expiration date

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

Piezo alarm cable incorrectly connected

Alarm cables connected to wrong polarity terminals during BDU top cap assembly replacement

Ranked causes

1. Incorrect polarity connection during reassembly (occasional)

First check

Verify piezo alarm cable polarity matches label markings

Test point: Piezo alarm cable terminals
Expected: Positive (+) connected to red terminal, negative (-) connected to black terminal

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

Post coin battery replacement system verification tests

Series of mandatory tests to be performed after coin battery replacement before returning ventilator to patient use.

Ranked causes

1. Coin battery replacement completed, requiring verification (common)

First check

Perform ventilator warm-up cycle

Test point: Service mode operation
Expected: Ventilator running continuously for 15 minutes without errors

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

PSOL current out of range

Flow sensor cross-check failure; proportional solenoid current measurement out of acceptable range

Ranked causes

1. Inadequate source gas or patient circuit leaks (common)

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

SST proximal purge error

Alert displayed during SST proximal purge procedure test

Ranked causes

1. Options host PCBA or proximal flow PCBA fault (unknown)

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

More symptoms

SST system leak
System leak detected
System leak failure
Target pressure not achieved
Test: Adult Short Self Test (SST)
Test: Earth Current Leakage (Normal Polarity, Closed Neutral)
Test: Earth Current Leakage (Normal Polarity, Open Neutral)
Test: Earth Current Leakage (Reverse Polarity, Closed Neutral)
Test: Earth Current Leakage (Reverse Polarity, Open Neutral)
Test: Extended Self Test (EST)
Test: External Ports
Test: Ground Isolation Resistance
Test: Ground Resistance
Test: Neonatal Short Self Test (SST)
Test: Oxygen Sensor Calibration Verification
Test: Pediatric Short Self Test (SST)
Test: Ventilator Inop
Unable to establish pressure in circuit leak test
Unable to establish stable flow
Vent inop test

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

Error codes

Code	Meaning	Trigger	Severity
`AE0602`	Delivery pressure solenoid leak exceeds alert limit	EST Leak Test on delivery PSOL	error
`AE0605`	Test circuit not connected to ventilator	EST Leak Test start without test circuit connection	error
`AE0607`	Delivery PSOL leak alert	Forward leakage on delivery PSOL exceeds alert limit during EST leak test	warning
`AE0807`	Screen lock key LED failure	Off-screen key LED on screen lock key does not illuminate during test	error
`AE0808`	Alarm silence key LED failure	Off-screen key LED on audio paused key does not illuminate during test	error
`AE0809`	Key-panel LED backlight brightness not changing	Off-screen Key Test execution	warning
`AE1301`	Delivery PSOL current feedback reading out of range	EST Delivery PSOL Test execution	error
`AE1501`	Exhalation valve loopback current out of range	EST Exhalation Valve Loopback Test execution	error
`AE1604`	Exhalation valve pressure measurement out of range	EST EV Pressure Accuracy & Seal Test	error
`AE1901`	Serial port communication malfunction	Communication loopback test	error
`AE2015`	Ventilator primary battery charge below acceptable level	Ventilator Battery EST during startup	error
`AE2100`	Compressor battery not installed; test skipped	Compressor Battery EST	info
`AE2115`	Compressor primary battery charge below acceptable level	Compressor Battery EST during startup	error
`AE2300`	Compressor not detected; EST skipped	Compressor EST	info
`AE2301`	Compressor not detected; EST skipped	Compressor EST	info
`AE2307`	Compressor motor speed outside acceptable range	Compressor performance monitoring	error
`AE2400`	Compressor leak test not performed; compressor not detected	Compressor Leak EST	info
`AE2401`	Compressor leak test not performed; compressor not detected	Compressor Leak EST	info
`AE2500`	Compressor Performance EST not performed; compressor not detected	Compressor Performance EST	info
`AE2501`	Compressor Performance EST not performed; compressor not detected	Compressor Performance EST	info
`AE2506`	Compressor unable to maintain required accumulator pressure	Compressor Performance EST	error
`AE2507`	Compressor unable to maintain required flow rate	Compressor Performance EST	error
`AS0022`	No oxygen supply connected	SST flow sensor cross check detects no oxygen during test	critical
`AS0023`	No air supply connected	SST flow sensor cross check detects no air during test	critical
`AS0305`	System Leak Alert	SST Leak test detects pressure drop over time	warning
`AS0405`	Occluded expiratory filter	SST Exhalation Filter test calculates excessive pressure drop	warning
`AS0408`	Occluded expiratory compartment	SST Exhalation Filter test verifies pressure drop out of range	warning
`AS0411`	Low expiratory filter ΔP	SST Exhalation Filter test shows low pressure drop	warning
`AS0503`	Occluded inspiratory limb	SST Circuit Resistance test detects excessive inspiratory limb pressure drop	warning
`AS0506`	Occluded expiratory limb	SST Circuit Resistance test detects excessive expiratory limb pressure drop	warning
`AS0507`	Unable to reach min peak flow	SST Circuit Resistance test cannot achieve minimum peak flow	warning
`AS0511`	Unable to reach min peak flow	SST Circuit Resistance test characterizes total resistance and fails	warning
`AS0513`	Insp limb resistance low	SST Circuit Resistance test shows low inspiratory limb resistance	warning
`AS0514`	Exp limb resistance low	SST Circuit Resistance test shows low expiratory limb resistance	warning
`AS0605`	Excessive compliance	SST Circuit Compliance test detects high circuit compliance	warning
`AS0607`	Compliance low	SST Circuit Compliance test detects low circuit compliance	warning
`AS0609`	Excessive compliance	SST Circuit Compliance test detects high circuit compliance	warning
`AS0611`	Compliance low	SST Circuit Compliance test detects low circuit compliance	warning
`AS0700`	SST: NOT INSTALLED	Ventilator does not detect proximal flow module at startup	info
`AS0701`	SST Prox Comm. Error	SST Prox system recognition test fails	error
`AS0703`	Demo Mode Square Wave Failed	SST Prox proximal flow system communications test fails	error
`AS0704`	P-atm Cross Check Failed	SST Prox barometric pressure readings between ventilator and prox module differ	error
`AS0705`	Autozero and Leak Test Failed	SST Prox checks pneumatic path for functionality	error
`AS0705`	Proximal flow system alert	Proximal flow subsystem malfunction or out of specification condition detected	error
`AS0707`	Pressure Cross Check Failed	SST Prox pressure cross check of proximal flow system fails	error
`AS0707`	Inspiratory filter disconnection or proximal sensor tubing issue	Filter removed or tubing disconnection detected	warning
`AS0707`	Proximal flow sensor alert	Proximal flow sensor tubing or connection problem detected during system self-test	warning
`AS0708`	Flow Sensor Cross Check Failed	SST Prox flow sensor cross check of proximal flow system fails	error
`AS0710`	Operator Skipped Prox Test	Proximal flow sensor connected but operator declines to run prox SST	info
`AS0711`	Purge Error	SST Prox purge procedure test fails	error
`AS0712`	SST proximal purge error	Proximal purge procedure test failure	warning
`AS0713`	SST proximal purge error	Proximal purge procedure test failure	warning
`AS0714`	SST proximal purge error	Proximal purge procedure test failure	warning
`AS0715`	SST proximal purge error	Proximal purge procedure test failure	warning
`AS0805`	System leak alert	Leak test detects circuit leakage	warning
`DXXXXX`	Assertion code (undefined content)	Unknown assertion error	warning
`FE0001`	Air pressure supply solenoid leak rate exceeds specification	Mix Leak Test on air supply circuit	critical
`FE0002`	Oxygen supply solenoid leak rate exceeds specification	Mix Leak Test on O2 supply circuit	critical
`FE0004`	Mix circuit accumulator unable to reach required pressure	Mix circuit accumulator pressure test	critical
`FE0005`	Mix circuit accumulator pressure drop exceeds acceptable limit	Mix circuit leak test - pressure hold phase	critical
`FE0006`	Mix circuit unable to pressurize accumulator	Mix circuit accumulator pressurization test	critical
`FE0007`	Air inlet pressure exceeds limit after disconnection	Mix circuit air inlet pressure verification	error
`FE0008`	Air side mix check valve reverse flow detected	Mix circuit air check valve test	error
`FE0009`	O2 side mix check valve reverse flow detected	Mix circuit O2 check valve test	error
`FE0010`	Oxygen inlet pressure exceeds limit	Mix circuit O2 inlet pressure verification	error
`FE0011`	Mix circuit unable to reach target accumulator pressure using O2	Mix circuit O2-side accumulator pressurization test	error
`FE0012`	Mix circuit exceeded target accumulator pressure using O2	Mix circuit O2-side accumulator pressurization test	critical
`FE0013`	Mix circuit unable to reach target accumulator pressure using air	Mix circuit air-side accumulator pressurization test	error
`FE0014`	Mix circuit exceeded target accumulator pressure using air	Mix circuit air-side accumulator pressurization test	critical
`FE0015`	Oxygen inlet pressure below acceptable limit	Mix circuit O2 inlet pressure test	warning
`FE0016`	Inspiratory flow rate exceeds specification	Mix circuit flow measurement test	error
`FE0017`	Options gas supply accumulator pressure unstable	Mix circuit options gas supply test	error
`FE0018`	Option Gas Supply solenoid leak rate exceeds specification	Mix circuit options gas solenoid test	error
`FE0021`	No air or oxygen supply connected to ventilator	Mix circuit gas supply detection test	critical
`FE0024`	AC power not detected by ventilator	Mix circuit AC power detection test	critical
`FE0101`	Air supply PSOL has excessive internal leakage	Mix PSOL lift-off test	critical
`FE0102`	O2 PSOL has excessive leak	Mix PSOL liftoff test	error
`FE0103`	Air PSOL current out of range	Mix PSOL liftoff test	error
`FE0104`	O2 PSOL current out of range	Mix PSOL liftoff test	error
`FE0107`	Air PSOL maximum liftoff current exceeded	Mix PSOL liftoff test	error
`FE0108`	O2 PSOL maximum liftoff current exceeded	Mix PSOL liftoff test	error
`FE0109`	Air PSOL liftoff current out of range	Mix PSOL liftoff test	error
`FE0110`	O2 PSOL liftoff current out of range	Mix PSOL liftoff test	error
`FE0111`	Mix air PSOL loopback current out of range	Mix PSOL loopback test	error
`FE0121`	No gas connected	Gas connection test	error
`FE0124`	AC power not detected	AC connection test	error
`FE0201`	Unable to stabilize accumulator pressure	Pressure sensor test	error
`FE0203`	Accumulator pressure out of range	Pressure sensor test	error
`FE0204`	Overpressure switch failed to activate	Pressure switch test	error
`FE0205`	Overpressure switch failed to deactivate	Pressure switch test	error
`FE0221`	No gas connected	Mix accumulator test	error
`FE0224`	AC power not detected	Mix accumulator test	error
`FE0301`	Inspiratory zero offset out of range	Pressure transducer auto-zero test	error
`FE0302`	Expiratory zero offset out of range	Pressure transducer auto-zero test	error
`FE0303`	Target pressure not achieved	Pressure cross check test	error
`FE0304`	Inspiratory and safety valve pressure sensor difference outside test limits	Pressure cross check test	error
`FE0305`	Inspiratory and exhalation pressure sensor difference outside test limits	Pressure cross check test	error
`FE0306`	Inspiratory auto zero solenoid not operational	Auto-zero solenoid test	error
`FE0307`	Exhalation auto zero solenoid not operational	Auto-zero solenoid test	error
`FE0321`	No gas connected	Circuit pressure test	error
`FE0324`	AC power not detected	Circuit pressure test	error
`FE0401`	Air inlet pressure sensor zero offset out of range	Zero offset pressure test	error
`FE0402`	O2 inlet pressure exceeded	Zero offset pressure test	error
`FE0404`	Accumulator pressure sensor zero offset out of range	Zero offset pressure test	error
`FE0405`	Inspiratory pressure sensor zero offset out of range	Zero offset pressure test	error
`FE0406`	Exhalation pressure sensor zero offset out of range	Zero offset pressure test	error
`FE0409`	Air mix flow sensor zero offset out of range	Flow offset test	error
`FE0410`	O2 mix flow exceeded	Flow offset test	error
`FE0412`	Inspiratory flow sensor zero offset out of range	Flow offset test	error
`FE0413`	Expiratory flow sensor zero offset out of range	Flow offset test	error
`FE0414`	Air still connected	Gas connection test	warning
`FE0415`	O2 still connected	Gas connection test	warning
`FE0424`	AC power not detected	AC power connection test	error
`FE0501`	Unable to establish stable flow	Flow stability test	error
`FE0502`	Inspiratory flow sensor out of range	Flow sensor cross check test	error
`FE0503`	Exhalation flow sensor out of range	Flow sensor cross check test	error
`FE0504`	Mix flow sensor out of range	Flow sensor cross check test	error
`FE0505`	PSOL current out of range	EST Flow Sensor Cross Check test failure	error
`FE0521`	No gas connected	EST Flow Sensor Cross Check test failure	error
`FE0524`	AC power not detected	EST Flow Sensor Cross Check test failure	error
`FE0601`	Delivery PSOL leak exceeds failure limit	EST Leak Test failure	error
`FE0603`	Unable to establish pressure during leak test	EST Leak Test and check valve reverse flow test	error
`FE0604`	Excessive leak during leak test	EST Leak Test failure	error
`FE0606`	Inspiratory check valve reverse flow too low	EST Leak Test check valve reverse flow test	error
`FE0607`	Inspiratory check valve reverse flow too high	EST Leak Test check valve reverse flow test	error
`FE0608`	Unable to establish accumulator pressure	EST Leak Test delivery PSOL leak test	error
`FE0609`	Unable to establish stable flow	EST Leak Test delivery PSOL leak test	error
`FE0610`	Safety valve failed to open	EST Leak Test delivery PSOL leak test	critical
`FE0611`	Safety valve cracking pressure out of range	EST Leak Test delivery PSOL leak test	error
`FE0621`	No gas connected during leak test	EST Leak Test gas connection test	error
`FE0624`	AC power not detected during leak test	EST Leak Test AC connection test	error
`FE0701`	No media driver found	EST Internal Storage test failure	error
`FE0702`	File open error	EST Internal Storage test failure	error
`FE0703`	File write error	EST Internal Storage test failure	error
`FE0704`	File read error	EST Internal Storage test failure	error
`FE0705`	File cleanup error	EST Internal Storage test failure	error
`FE0801`	Screen brightness key failed	EST Off-screen Key Test failure	warning
`FE0802`	Screen lock key failed	EST Off-screen Key Test failure	warning
`FE0803`	Manual inspiration key failed	EST Off-screen Key Test failure	warning
`FE0804`	Alarm reset key failed	EST Off-screen Key Test failure	warning
`FE0805`	Alarm volume key failed	EST Off-screen Key Test failure	warning
`FE0806`	Alarm silence key failed	EST Off-screen Key Test failure	warning
`FE0810`	Inspiratory pause key failed	EST Off-screen Key Test failure	warning
`FE0811`	Expiratory pause key failed	EST Off-screen Key Test failure	warning
`FE0901`	Rotary knob malfunction	EST Rotary Knob Test failure	error
`FE1001`	Status display to BD communication failed	EST Status Display test failure at start-up	error
`FE1002`	BD to status display communication failed	EST Status Display test failure	error
`FE1005`	Status display failed	EST Status Display test failure	error
`FE1101`	Primary Audio Alarm Test	Active Alarm Indicator failed	error
`FE1102`	Primary Audio Alarm Test	Latched Alarm Indicator failed	error
`FE1103`	Primary Audio Alarm Test	Alternative gas Indicator failed	error
`FE1104`	Primary Audio Alarm Test	Low Alarm sound failed	error
`FE1105`	Primary Audio Alarm Test	Medium Alarm sound failed	error
`FE1106`	Primary Audio Alarm Test	High Alarm sound failed	error
`FE1201`	BD Audio	Alarm cable malfunction	error
`FE1202`	BD Audio	Power fail cap OOR	error
`FE1203`	BD Audio	Power-Fail cap not discharging	error
`FE1208`	BD Audio	Piezo alarm failure	error
`FE1321`	EST Delivery PSOL Test	No Gas Connected	error
`FE1324`	EST Delivery PSOL Test	AC power not detected	error
`FE1401`	Safety System	Unable to establish stable flow	critical
`FE1402`	Safety System	Safety Valve Occluded	critical
`FE1403`	Safety System	Safety Valve Loopback current OOR	critical
`FE1421`	Safety System	No Gas Connected	error
`FE1424`	Safety System	AC power not detected	error
`FE1521`	EST Exhalation Valve Loopback Test	No Gas Connected	error
`FE1524`	EST Exhalation Valve Loopback Test	AC power not detected	error
`FE1601`	EST EV Pressure Accuracy & Seal Test	Exhalation valve calibration required	error
`FE1602`	EST EV Pressure Accuracy & Seal Test	Unable to establish flow	error
`FE1603`	EST EV Pressure Accuracy & Seal Test	Exhalation Flow too High	error
`FE1604`	EST EV Pressure Accuracy & Seal Test	Exhalation valve pressure OOR	error
`FE1605`	EST EV Pressure Accuracy & Seal Test	LVDT Temp OOR	error
`FE1621`	EST EV Pressure Accuracy & Seal Test	No Gas Connected	error
`FE1624`	EST EV Pressure Accuracy & Seal Test	AC power not detected	error
`FE1701`	EST EV Calibration Table Test	Exhalation Valve Not Calibrated	error
`FE1702`	EST EV Calibration Table Test	Unable to establish stable flow	error
`FE1703`	EST EV Calibration Table Test	Pressure OOR	error
`FE1705`	EST EV Calibration Table Test	LVDT temp OOR	error
`FE1721`	EST EV Calibration Table Test	No Gas Connected	error
`FE1724`	EST EV Calibration Table Test	AC power not detected	error
`FE1801`	EST EV Velocity Transducer Test	Unable to establish flow	error
`FE1802`	EST EV Velocity Transducer Test	Exhalation velocity transducer OOR	error
`FE1803`	EST EV Velocity Transducer Test	Unable to stabilize position: Reseat the exhalation valve body	error
`FE1821`	EST EV Velocity Transducer Test	No Gas Connected	error
`FE1824`	EST EV Velocity Transducer Test	AC power not detected	error
`FE1902`	Communication	GUI to BD ping failed on Ether1	error
`FE2001`	Ventilator Battery	Card cage fan malfunction	error
`FE2002`	Ventilator Battery	Ventilator primary battery not installed	critical
`FE2003`	Ventilator Battery	Ventilator primary battery malfunction	critical
`FE2004`	Ventilator Battery	Ventilator primary battery temperature OOR	critical
`FE2010`	Ventilator Battery	Board temperature OOR	error
`FE2013`	Ventilator Battery	AC power still detected	warning
`FE2014`	Ventilator Battery	Ventilator extended battery installed	warning
`FE2016`	Ventilator primary battery voltage out of range	Battery voltage test detects out-of-spec voltage	error
`FE2017`	Ventilator primary battery triad voltages out of range	Battery voltage test detects out-of-spec triad voltages	error
`FE2018`	Ventilator primary battery current out of range	Battery current test detects out-of-spec current	error
`FE2024`	AC power not detected	AC power detection test fails	error
`FE2102`	Compressor primary battery not installed	Battery installation test fails	error
`FE2103`	Compressor primary battery malfunction	Battery function test fails	error
`FE2104`	Compressor primary battery temperature out of range	Battery temperature test detects out-of-spec temperature	error
`FE2113`	AC power still detected during battery discharge test	User fails to disconnect AC power when prompted during battery discharge test	error
`FE2114`	Compressor extended battery installed	Extended battery status test detects extended battery presence	error
`FE2116`	Compressor primary battery voltage out of range	Battery voltage test detects out-of-spec voltage	error
`FE2117`	Compressor primary battery triad voltages out of range	Battery voltage test detects out-of-spec triad voltages	error
`FE2118`	Compressor primary battery current out of range	Battery current test detects out-of-spec current	error
`FE2124`	AC power not detected	AC power detection test fails	error
`FE2201`	Unable to enable mix backup ventilation	Mix backup ventilation enable test fails within 50 seconds	error
`FE2202`	Mix backup ventilation failed to reach target pressure	Mix backup ventilation pressure test shows failure to reach target	error
`FE2203`	No air delivery in mix backup ventilation	Mix backup ventilation test detects zero air flow	error
`FE2204`	No O2 delivery in mix backup ventilation	Mix backup ventilation test detects zero oxygen flow	error
`FE2205`	O2 delivery when air expected	Mix backup ventilation test detects oxygen in air channel	error
`FE2206`	Air delivery when O2 expected	Mix backup ventilation test detects air in O2 channel	error
`FE2207`	Unable to establish stable flow	Inspiratory backup ventilation test fails to stabilize flow	error
`FE2208`	Delivery flow is higher than expected	Inspiratory backup ventilation test detects excessive flow	error
`FE2209`	Unable to enable inspiratory backup ventilation	Inspiratory backup ventilation enable test fails	error
`FE2210`	Unable to establish stable pressure	Inspiratory backup ventilation test fails to stabilize pressure	error
`FE2211`	Unable to establish stable flow	Inspiratory backup ventilation test fails to stabilize flow	error
`FE2212`	Unable to enable exhalation backup ventilation	Exhalation backup ventilation enable test fails	error
`FE2213`	Exhalation backup ventilation current out of range	Exhalation backup ventilation current test detects out-of-spec current	error
`FE2214`	Exhalation valve current out of range	Exhalation backup ventilation current test detects out-of-spec current	error
`FE2215`	Pressure out of range	Exhalation backup ventilation pressure test detects out-of-spec pressure	error
`FE2216`	Unable to reach minimum pressure	Exhalation backup ventilation test fails to reach minimum pressure	error
`FE2221`	No gas connected	Gas detection test fails to detect air or oxygen	error
`FE2224`	AC power not detected	AC power detection test fails	error
`FE2302`	Wall air pressure detected	Gas detection test detects wall air during compressor operation	error
`FE2303`	Unable to drain accumulator	Compressor accumulator pressure test fails to drain	error
`FE2304`	Pressure sensor zero offset out of range	Compressor sensor offset test detects out-of-spec zero offset	error
`FE2305`	Fan speed out of range	Fan speed test detects out-of-spec speed	error
`FE2306`	Motor speed at zero	Compressor motor speed test detects zero rpm	error
`FE2308`	Pressure exceeded maximum value	Compressor accumulator pressure test detects over-pressure condition	error
`FE2309`	Compressor accumulator pressure test failure	Accumulator pressure below expected range during diagnostic test	error
`FE2309`	Target pressure not reached	Compressor accumulator pressure test shows pressure below target	error
`FE2310`	Pressure sensor out of range	Compressor accumulator pressure test detects sensor out-of-range condition	error
`FE2311`	Unable to establish pressure	Compressor accumulator pressure test fails to establish pressure	error
`FE2312`	Pressure exceeded maximum value	Compressor accumulator pressure test detects over-pressure condition	error
`FE2324`	AC power not detected	AC power detection test fails	error
`FE2402`	Compressor leak - wall air pressure detected	Gas detection test detects wall air during leak test	error
`FE2403`	Compressor leak - unable to drain accumulator	Accumulator pressure test fails to drain	error
`FE2404`	Compressor leak - target pressure not reached	Accumulator pressure test shows pressure below target	error
`FE2405`	Compressor leak - excessive leak	Accumulator pressure test shows excessive leak rate	error
`FE2424`	AC power not detected	AC power detection test fails	error
`FE2502`	Compressor performance - wall air pressure detected	Gas detection test detects wall air during performance test	error
`FE2503`	Compressor performance - unable to drain accumulator	Accumulator pressure test fails to drain	error
`FE2504`	Compressor Performance test: Target pressure not reached	Compressor cannot achieve target pressure during diagnostic test	error
`FE2505`	Compressor Performance test: Unable to establish stable flow	Compressor fails to produce consistent, stable airflow during diagnostic	error
`FE2524`	AC power not detected during compressor performance test	Compressor performance test initiated without mains AC power available	error
`FS0001`	Unable to establish stable inspiratory flow	Flow sensor cross-check test failure	error
`FS0002`	Inspiratory flow sensor out of range	Flow accuracy test detects sensor reading outside limits	error
`FS0003`	Exhalation flow sensor out of range	Flow accuracy test detects sensor reading outside limits	error
`FS0004`	Mix flow sensor out of range	Flow accuracy test detects sensor reading outside limits	error
`FS0005`	PSOL current out of range	PSOL current accuracy test failure	error
`FS0021`	No gas connected	Gas connection test failure	error
`FS0024`	AC power not detected	AC power connection test failure	critical
`FS0101`	Exhalation valve not calibrated	EV calibration test failure	warning
`FS0102`	Unable to establish stable flow with EVQ installed	Flow stability test failure during EV performance test	error
`FS0103`	Exhalation valve pressure out of range	Pressure accuracy test during EV performance	error
`FS0105`	LVDT temperature out of range	Motor temperature test failure during EV performance	error
`FS0121`	No gas connected	Gas connection test failure during EV performance	error
`FS0124`	AC power not detected	AC power connection test failure during EV performance	critical
`FS0201`	Inspiratory zero offset out of range	Pressure offset test failure during circuit pressure check	error
`FS0202`	Expiratory zero offset out of range	Pressure offset test failure during circuit pressure check	error
`FS0203`	Target pressure not achieved	Pressure stability test failure during circuit pressure check	error
`FS0204`	Inspiratory and safety valve pressure difference outside limits	SV pressure accuracy test failure	error
`FS0205`	Inspiratory and exhalation pressure difference outside limits	Pressure sensor cross-check test failure	error
`FS0206`	Inspiratory auto zero solenoid not operational	Inspiratory pressure offset test failure	error
`FS0207`	Exhalation auto zero solenoid not operational	Exhalation pressure offset test failure	error
`FS0221`	No gas connected	Gas connection test failure during circuit pressure check	error
`FS0224`	AC power not detected	Power detection test failure during circuit pressure check	critical
`FS0303`	Unable to establish pressure in circuit leak test	Circuit leak test failure during SST leak check	error
`FS0304`	System leak failure	Circuit leak test detects excessive leakage	error
`FS0321`	No gas connected	Gas connection test failure during leak check	error
`FS0324`	AC power not detected	Power connection test failure during leak check	critical
`FS0401`	Unable to establish stable flow with exhalation filter	Flow stability test failure during exhalation filter check	error
`FS0403`	Occluded expiratory compartment	Exhalation filter resistance test detects excessive resistance	error
`FS0404`	Occluded expiratory filter	Exhalation filter resistance test detects blockage	error
`FS0406`	Patient circuit not disconnected	Circuit connection test during setup	warning
`FS0407`	Patient circuit not reconnected	Circuit connection test after service	warning
`FS0410`	Low expiratory filter pressure drop	Exhalation filter resistance test shows low resistance	error
`FS0421`	No gas connected	Gas connection test shows no air and oxygen supplies	critical
`FS0424`	AC power not detected	AC connection test fails	critical
`FS0501`	Unable to establish stable flow	Flow stability test cannot achieve stable flow	error
`FS0502`	Occluded inspiratory limb	Inspiratory limb pressure test detects high pressure	error
`FS0504`	Unable to reach minimum peak flow	Flow stability test cannot reach required flow	error
`FS0505`	Occluded expiratory limb	Expiratory limb pressure test detects high pressure	error
`FS0508`	Inspiratory limb resistance low	Inspiratory limb resistance test shows low resistance	warning
`FS0509`	Expiratory limb resistance low	Expiratory limb resistance test shows low resistance	warning
`FS0510`	Unable to reach minimum peak flow	Flow stability test cannot reach minimum flow	error
`FS0512`	Wye not blocked	Pressure build test shows low pressure in inspiratory limb	warning
`FS0521`	No gas connected	Gas connection test shows no air and oxygen supplies	critical
`FS0524`	AC power not detected	AC connection test shows AC power not connected	critical
`FS0601`	Unable to pressurize circuit	Circuit compliance test cannot reach required pressure points	error
`FS0602`	Unable to pressurize circuit	Circuit compliance test cannot pressurize	error
`FS0603`	Compliance calculation failure	Pressure build test detects wye not blocked causing leak	warning
`FS0604`	Excessive compliance	Circuit compliance test shows abnormally high compliance	warning
`FS0606`	Compliance low	Circuit compliance test shows low compliance	error
`FS0608`	Excessive compliance	Circuit compliance test shows abnormally high compliance	error
`FS0610`	Compliance low	Circuit compliance test shows low compliance	error
`FS0621`	No gas connected	Gas connection test shows air and O2 supplies not detected	critical
`FS0624`	AC power not detected	Power connection test shows AC power not connected	critical
`FS0709`	Gas not connected	Gas connection test for proximal flow sensor	error
`FS0721`	No gas connected	Gas connection test shows no gas detected	critical
`FS0724`	AC power not detected	Power connection test shows AC power not connected	critical
`FS0803`	Unable to establish pressure	Circuit pressure test cannot build pressure	error
`FS0804`	System leak detected during circuit leak test	SST circuit leak test failure	error
`FS0821`	Gas supply not connected	SST gas connection test failure	error
`FS0824`	AC power not detected	SST AC power connection test failure	error
`KB0004`	Expiratory motor current out of range	Expiratory motor current measurement outside acceptable range	error
`KP0013/XP0013`	Watchdog timer test	POST watchdog timer test	info
`KP0112`	Ventilator inoperative test failed	CPU or fundamental ventilator function failure detected during POST	critical
`KP0115`	Digital-to-analog converter (DAC) test failed	DAC malfunction detected for specific subsystem during POST	error
`KP0116`	Analog devices test failed in subsystem	Analog-to-digital converter or analog circuit failure in identified subsystem	error
`KP0120`	Safe state system test failed	Failure in safe shutdown or safety valve system during POST	critical
`KP0132`	Power distribution subsystem test failed	DC power delivery circuit failure or insufficient voltage during POST	error
`KP0133`	Compressor subsystem test failed	Compressor circuit or power supply failure detected during POST	error
`KP0134`	Mix subsystem test	POST diagnostic test initiated	error
`KP0135`	Inspiratory subsystem test	POST diagnostic test initiated	error
`KP0136`	Exhalation Subsystem test	POST diagnostic test initiated	error
`LB0002`	Exhalation flow OOR	Flow measurement out of range	error
`LB0005`	Ventilator 24 V bus power out of range	24V power supply out of specification	critical
`LB0011`	Exhalation flow temp OOR	Thermistor reading out of range	error
`LB0021`	Atmospheric pressure out of range	Atmospheric pressure sensor reading outside acceptable range	warning
`LB0022`	O2 sensor OOR	Oxygen sensor measurement out of range	error
`LB0023`	O2 sensor OOR reset	O2 sensor out-of-range condition cleared	info
`LB0039`	BD time of day clock failed	Real time clock failure detected	warning
`LB0052`	Loss of GUI communications	GUI communication link lost	error
`LB0070`	Task monitor	Task monitoring event	info
`LB0088`	Proximal error	Proximal flow sensor reading error	error
`LB0090`	Mix inlet pressure OOR	Gas inlet pressure out of specification	warning
`LB0094`	Status display reported errors	Status display communication error	error
`LB0095`	Loss of status display communication	Status display communication loss	error
`LB0099`	Mix air flow OOR	Air flow measurement out of range	error
`LB0100`	Mix O2 flow OOR	Oxygen flow measurement out of range	error
`LB0115`	CO2 sensor fault	CO2 sensor reading error	error
`LB0116`	CO2 sensor zeroing initiated	CO2 sensor calibration procedure active	info
`LB0121`	PI 3.3V scaled out of range	PI 3.3V scaled reading out of acceptable range	warning
`LB0125`	PE 3.3V reference scaled out of range	PE 3.3V reference scaled reading out of acceptable range	warning
`LB0126`	Mix 5V supply out of range	Mix circuit 5V supply voltage out of acceptable range	error
`LB0127`	Mix 5V supply out of range	Mix circuit 5V supply voltage out of acceptable range	error
`LB0129`	Mix 12V supply out of range	Mix circuit 12V supply voltage out of acceptable range	error
`LB0130`	Mix 24V supply out of range	Mix circuit 24V supply voltage out of acceptable range	error
`LB0145`	Ventilator 24 V main supply power out of range	Main 24V power out of specification	critical
`LB0182`	High air inlet pressure	Air supply pressure exceeds limit	warning
`LB0183`	High O2 inlet pressure	O2 supply pressure exceeds limit	warning
`LB0194`	Inspiratory 24V supply out of range	Inspiratory 24V power supply voltage out of acceptable range	error
`LB0232`	BD NOVRAM operational time values out of range	CPU operational hours out of range	warning
`LB0234`	BD from GUI Operational time values out of range	BD time values outside expected range	warning
`LB0236`	Operational times values out of range	System operational hours out of range	warning
`LP0125`	Primary battery not installed or not detected by ventilator	Battery not present or not properly seated during power-on self test	error
`LP0127`	Expiratory flow sensor cannot be read by ventilator	Exhalation valve flow sensor (EVQ) electrical failure or connection issue	error
`UXXXXX`	Assertion code (undefined content)	Unknown assertion error	info
`XB0080`	Init loss of BD communication	BD communication lost during initialization	info
`XP0097`	SAAS self test start	Self-test initiated	error
`ZB0035`	Touch screen blocked	Touch screen input disabled	info
`ZB0036`	Touch screen resumed	Touch screen input re-enabled	info
`ZB0040`	GUI time of day clock failed	GUI real time clock failure detected	warning
`ZB0053`	Loss of BD communications	BD communication link lost	error
`ZB0071`	GUI drops a waveform packet	Waveform data packet loss detected	info
`ZB0103`	USB failure	USB interface failure detected	critical
`ZB0117`	UI board communications error	UI board communication issue	info
`ZB0118`	Video lock error	UI to BDU communication error	error
`ZB0119`	UI heartbeat error	UI board heartbeat signal lost	info
`ZB0178`	Offscreen keys driver event	Key input off screen detected	info
`ZB0179`	Logs media failure	Log storage medium failure	info
`ZB0180`	Logs initialization failure	Log system initialization error	info
`ZB0181`	Logs transaction failure	Log write transaction failed	info
`ZB0191`	Unable to save config files to USB	USB save operation failed	info
`ZB0192`	Unable to load config files from USB	USB load operation failed	info
`ZB0231`	USB operational time error detected	USB time tracking error	info
`ZB0235`	GUI from BD operational time values out of range	GUI time values outside expected range	warning

Likely causes and actions for each code are in ServiceForge. Connect ServiceForge to your AI

Community

0 fixes logged by technicians through their AI, with outcomes, for this model.

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