Infant warmers and incubators · Resuscitaire family

Dräger Resuscitaire Radiant Warmer: troubleshooting and error codes

The ServiceForge knowledge base holds 90 documented symptoms for the Dräger Resuscitaire Radiant Warmer, with 131 ranked causes, 171 diagnostic checks with test points and expected values, and 23 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

Cannot obtain desired suction pressure caution

Suction/vacuum system pressure is lower than expected or cannot reach target value

Ranked causes

1. Suction jar rim gasket is worn (common)
2. Suction jar is loose or chipped (common)
3. Connecting hose is bent or tangled (common)
4. Hose is leaking between regulator and bottle (occasional)
5. Pressure or suction gauge not measuring correctly (rare)

First check

Perform RAP 2.23 diagnostic and repair procedure

Test point: Suction system
Expected: Desired pressure obtained

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

Calibration: Breath rate timing patient safety

Breath rate timing does not match specification; expiratory or inspiratory time out of tolerance at 18 BPM or 60 BPM

Ranked causes

1. Breath Rate control knob out of adjustment (common)
2. Timing variable resistor out of adjustment (common)
3. Expiratory resistor out of adjustment (common)
4. Inspiratory check valve resistor out of adjustment (common)

First check

Connect exhalation valve to transducer and transducer to digital counter

Test point: Exhalation valve port to transducer to counter
Expected: Circuit connected and operational

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

Probe Fail alarm activates patient safety

Skin temperature probe alarm is triggered indicating probe contact or connection issue

Ranked causes

1. Skin temperature probe detached from infant (common)
2. Skin temperature probe is damaged (occasional)
3. Skin temperature probe disconnected from receptacle (common)
4. Skin temperature probe connector damaged (occasional)

First check

Verify probe is in contact with infant skin

Test point: Skin temperature probe tip
Expected: Firm contact with infant skin

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

Suction does not obtain desired pressure caution

Suction system fails to achieve or maintain target vacuum pressure; low or no suction output

Ranked causes

1. Suction jar rim gasket or jar damaged or worn (common)
2. Suction hose kinked, tangled, or leaking (common)
3. Suction filter clogged or dirty (common)
4. Pressure or suction gauge measuring incorrectly; Suction Module failure (occasional)

First check

Inspect suction jar and rim gasket

Test point: Suction jar (A) and rim gasket
Expected: No visible wear, cracks, or damage

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

Ambient temperature probe reading incorrect or missing patient safety

Diagnostic Test #10 shows incorrect ambient temperature probe values or display shows rail value (17.67±0.03) indicating no probe or circuit failure

Ranked causes

1. Ambient temperature probe disconnected or damaged (common)
2. Display P.C. Board (PCB1) failure (occasional)
3. Ambient temperature probe temperature difference excessive (occasional)

First check

Access off-line Diagnostic Mode and proceed to Diagnostic Test #10; observe ambient probe readings

Test point: Baby Temperature and Apgar Timer displays
Expected: Ambient Probe 1 and 2 temperature values displayed (or 17.67±0.03 if no probe)

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

Blender Module alarm activates caution

Blender Module alarm is triggered indicating oxygen/air supply issue

Ranked causes

1. Oxygen and/or air is disconnected (common)
2. Oxygen and/or air tank not opened (common)
3. Pressure differential exceeds 30 psi ± 2 psi (occasional)

First check

Verify oxygen and air supply connections

Test point: Oxygen and air inlet connectors
Expected: Both supplies connected and secured

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

Calibration: Suction Relief Valve Maximum Pressure caution

Verify and adjust suction relief valve spring to maintain maximum suction pressure within specification; calibrate gauge accuracy across range.

Ranked causes

1. Suction gauge accuracy not within 3% of full scale (unknown)
2. Suction relief valve maximum pressure out of specification (unknown)
3. Suction gauge zero point drift (unknown)

First check

Verify suction gauge accuracy across operating range

Test point: Suction hose connected to RT200 tester; gauge readings compared to test device
Expected: Readings within 3% of full scale
Tools: RT200 tester or equivalent, pressure range 185 mm Hg (99"H2O)

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

Diagnostic Test #6 Heater/Relays AC Line Voltage Display patient safety

Tests safety relay status and AC line voltage via Solid State Relays K3 and K4; quartz heater runs ~40 seconds per relay

Ranked causes

1. Power and Control P.C. Board (PCB2) failure (common)
2. Quartz heater element failure (occasional)
3. AC line voltage out of specification (occasional)

First check

Access off-line Diagnostic Mode; at Test #6, verify safety relay (K1) status is initially Off on Apgar Timer display

Test point: Apgar Timer display
Expected: Safety relay status Off

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

Heater does not turn on caution

Heater fails to activate; no radiant heat output detected

Ranked causes

1. Quartz heating element open or damaged (common)
2. Connection at J4 on Power and Control P.C. Board (PCB2) loose or damaged (occasional)
3. J4 or K1 connector damaged on Power and Control P.C. Board (PCB2) (occasional)

First check

Remove and inspect quartz heating element

Test point: Quartz heating element (A)
Expected: No signs of breakage, discoloration, or damage

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

Power Fail alarm activates high voltage

Power Fail alarm is triggered on unit startup or during operation

Ranked causes

1. Circuit breaker on power input is tripped (common)
2. Power cord is unplugged (common)
3. Power cord is damaged (occasional)

First check

Verify circuit breaker status

Test point: Power input circuit breaker
Expected: Not tripped

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

Skin temperature probe reading incorrect or missing patient safety

Diagnostic Test #11 shows incorrect skin probe temperature or displays rail value (17.67±0.03) indicating probe disconnected or circuit failure

Ranked causes

1. Skin temperature probe disconnected or damaged (common)
2. Display P.C. Board (PCB1) failure (occasional)
3. Skin probe damaged or skin probe receptacle damaged (occasional)

First check

Access off-line Diagnostic Mode and proceed to Diagnostic Test #11; attach skin probe to body surface; observe readings

Test point: Baby Temperature and Apgar Timer displays
Expected: Skin Probe 1 and 2 temperature values displayed (or 17.67±0.03 if no probe/problem)

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

Baby skin temperature probe not displaying temperature patient safety

Baby Temperature display does not activate when probe connected to probe connector

Ranked causes

1. Temperature probe disconnected or defective (common)
2. Probe connector circuit fault (occasional)

First check

Verify probe connection at connector

Test point: Skin Temperature Probe connector
Expected: Probe physically connected and seated properly

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

Blender Module O2 concentration setting does not match display caution

Blender Module display setting does not correspond to the actual oxygen concentration knob position

Ranked causes

1. Blender Module knob is loose (common)
2. Blender Module has failed (occasional)

First check

Perform RAP 2.24 diagnostic and repair procedure

Test point: Blender Module O2 setting and display
Expected: Setting matches display

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

Blender module output mixture out of specified range patient safety

Blender module output oxygen concentration is outside the specified range of 20.8% to 100%

Ranked causes

1. Water contamination in air inlet (common)
2. Blender module damaged (occasional)

First check

Verify oxygen concentration output

Test point: Blender Module output reading
Expected: Between 20.8% and 100%, 20.8-100%

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

Blender Module output mixture outside specified range caution

Blender Module gas mixture is not within 20.8% to 100% oxygen specification

Ranked causes

1. Air inlet H2O filter is missing or clogged (common)
2. Blender Module has failed (occasional)

First check

Perform RAP 2.26 diagnostic and repair procedure

Test point: Blender Module output O2 percentage
Expected: 20.8% to 100%

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

Blender module oxygen concentration reading does not match setting patient safety

Oxygen concentration display on blender module does not match the knob setting

Ranked causes

1. Blender module knob not secure or misaligned (common)
2. Defective blender module (occasional)

First check

Verify blender knob is secure and properly aligned

Test point: Blender Module knob (A)
Expected: Knob fully seated and aligned

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

Diagnostic Test #5 Heater Duty Cycle patient safety

Displays AC heater duty cycle percentage applied to achieve 600 Watts; verifies AC line voltage correction

Ranked causes

1. Display P.C. Board (PCB1) failure (occasional)
2. Incorrect AC line voltage (occasional)

First check

Verify AC line voltage per RAP 2.7; consult table 2-3 for correction percentage values

Test point: AC mains
Expected: Voltage within normal range for model

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

Heating element does not turn ON high voltage

Radiant heater element fails to energize during normal operation

Ranked causes

1. Heating element is open circuit (occasional)
2. Internal malfunction (unknown)

First check

Verify heating element connectors are seated

Test point: Heating element connector
Expected: Firmly attached and secure

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

Perform back-up audio annunciation test

Diagnostic Test #17 activates piezo back-up audio annunciator at 1 second intervals

Ranked causes

1. Display PCB (PCB1) malfunction (common)
2. Power and Control PCB (PCB2) malfunction (occasional)

First check

Access Diagnostic Test #17 and verify OFF appears on display

Test point: Baby Temperature display
Expected: OFF appears

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

Perform speaker test across volume ranges

Diagnostic Test #16 activates speaker test at low, mid-range, and high volume levels

Ranked causes

1. Display PCB (PCB1) malfunction (common)
2. Power and Control PCB (PCB2) malfunction (occasional)

First check

Access Diagnostic Test #16 and verify OFF appears on display

Test point: Baby Temperature display
Expected: OFF appears

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

Pre-Warm Mode not activated on system reset caution

Unit does not enter Pre-Warm Mode when powered on or reset

Ranked causes

1. System is in Diagnostic Mode (common)
2. Internal malfunction with PCB2 (occasional)

First check

Verify Diagnostic Mode is not active

Test point: Front panel display
Expected: Normal display, not Diagnostic Mode pattern

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

Pre-warm mode not activated upon system reset caution

System does not enter pre-warm mode when powered on after reset; heater does not activate in pre-warm phase

Ranked causes

1. System in Diagnostic Mode (common)
2. ROM test failure on Power and Control P.C. Board (PCB2) (occasional)

First check

Verify system is out of Diagnostic Mode

Test point: Display and system operation
Expected: Normal operation mode displayed; system responsive to standard controls

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

Skin probe temperature accuracy out of specification patient safety

Diagnostic Test #12 shows skin probe accuracy temperature readings not within 36.00°C ±0.05°C tolerance

Ranked causes

1. Skin temperature sensor out of calibration (common)
2. Display P.C. Board (PCB1) failure (occasional)

First check

Access off-line Diagnostic Mode and proceed to Diagnostic Test #12; observe skin probe accuracy temperature readings

Test point: Baby Temperature and Apgar Timer displays
Expected: Accuracy temperature values displayed for Skin Probes 1 and 2

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

Verify logic voltage display reads out of range

CPU voltage on Baby Temperature display does not show 5.100V DC ± 0.1V DC during Diagnostic Test #13

Ranked causes

1. Display PCB (PCB1) malfunction (common)
2. DC power supply voltage out of specification (occasional)

First check

Access Diagnostic Test #13 and read CPU voltage

Test point: Baby Temperature display
Expected: 5.100V DC ± 0.1V DC, ±0.1 V

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

Verify supercap voltage display reads out of range

Supercap voltage on Baby Temperature display during Diagnostic Test #14 not between 3.750V DC to 5.300V DC

Ranked causes

1. Display PCB (PCB1) malfunction (common)
2. Power and Control PCB (PCB2) malfunction (occasional)

First check

Access Diagnostic Test #14 and read supercap voltage

Test point: Baby Temperature display
Expected: 3.750V DC to 5.300V DC, 3.750 to 5.300 V

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

ADC gain or offset out of specification

Diagnostic Test #9 displays ADC gain below 4085 or offset above 7, showing FAIL on displays instead of numeric values

Ranked causes

1. Display P.C. Board (PCB1) failure or ADC calibration error (occasional)

First check

Access off-line Diagnostic Mode and proceed to Diagnostic Test #9; measure ADC gain

Test point: Apgar Timer display
Expected: Gain between 4085 and 4095 counts, 4085-4095

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

Alarm does not sound at 30-second intervals during 5-minute wait patient safety

During the 5-minute wait after initial 10-minute Chk Patient alarm, alarm does not sound at 30-second intervals as expected

Ranked causes

1. Alarm circuit timer or buzzer malfunction (occasional)

First check

Monitor alarm sound interval during extended wait

Test point: Alarm buzzer; timer
Expected: Alarm sounds at 30-second intervals for 5 minutes

Apgar Timer alarm does not sound at 1 minute caution

After Apgar Timer reaches 1:00 minute, alarm does not beep once as expected

Ranked causes

1. Timer interval alarm circuit malfunction (occasional)

First check

Monitor timer for 1-minute alarm

Test point: Apgar Timer display; Alarm buzzer
Expected: Alarm beeps once when timer reaches 1:00 minute

Apgar Timer does not pause or reset caution

Pressing Start/Stop key does not pause Apgar Timer count, or pressing Reset key does not turn off timer display

Ranked causes

1. Start/Stop or Reset key circuit malfunction (occasional)

First check

Press Start/Stop to pause timer

Test point: Start/Stop key; Apgar Timer display
Expected: Timer count stops

1 more check with pass and fail actions are in ServiceForge. Connect ServiceForge to your AI

Apgar Timer does not start or count up caution

After reconnecting probe and pressing Start/Stop key, Apgar Timer display does not come on or does not begin counting up from 0 seconds

Ranked causes

1. Apgar Timer circuit or Start/Stop key malfunction (occasional)

First check

Reconnect probe and start Apgar Timer

Test point: Skin Temperature Probe connector; Start/Stop key; Apgar Timer display
Expected: Apgar Timer display comes on and counts up from 0 seconds

AutoBreath Infant Resuscitator BPM outside specified range caution

AutoBreath module measured breaths-per-minute rate is outside normal operating specification

Ranked causes

1. Internal malfunction with AutoBreath module (unknown)

First check

Perform RAP 2.30 diagnostic procedure

Test point: AutoBreath module BPM measurement
Expected: Within specified BPM range

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

AutoBreath infant resuscitator breaths-per-minute out of range patient safety

AutoBreath infant resuscitator measured breaths-per-minute (BPM) is outside the specified range of 10-60 BPM

Ranked causes

1. Resuscitation module defective (common)

First check

Measure AutoBreath measured breaths-per-minute

Test point: AutoBreath module
Expected: Between 10 BPM and 60 BPM, 10-60 BPM

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

AutoBreath infant resuscitator I/E ratio out of specification patient safety

Inhalation/Exhalation (I/E) ratio measured on AutoBreath infant resuscitator is outside specification

Ranked causes

1. Resuscitation module defective or miscalibrated (common)

First check

Measure AutoBreath I/E ratio

Test point: AutoBreath module output
Expected: Within specified I/E ratio range

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

Baby Mode does not activate or set temperature defaults incorrectly patient safety

Pressing Mode Select key to enter Baby Mode does not light Baby indicator, or Set Temperature display does not activate and default to 97.7°F (36.5°C), or Baby Temperature indicator does not flash

Ranked causes

1. Mode select circuit or temperature sensor initialization fault (occasional)

First check

Select Baby Mode

Test point: Mode Select key; Baby indicator; Set Temperature display; Baby Temperature indicator
Expected: Baby indicator lights; Set Temperature display activates and defaults to 97.7°F (36.5°C); Baby Temperature indicator flashes; alarm sounds

Bassinet front panel not properly engaged or cannot position patient safety

Front panel cannot slide under mattress, does not return to upright position, or does not stay positively engaged to confine infant

Ranked causes

1. Front panel hinge, engagement mechanism, or corner bracket defect or wear (common)

First check

Test front panel sliding under mattress

Test point: Front panel (D) and mattress (E) sliding interface
Expected: Front panel raises and slides smoothly under mattress

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

Bassinet side panels not properly engaged to confine infant patient safety

Side panels cannot be raised and pivoted down, or do not stay positively engaged in upright position to confine infant

Ranked causes

1. Side panel hinge or engagement mechanism defect or wear (common)

First check

Test side panel raising and lowering

Test point: Side panel (C) hinges and pivots
Expected: Side panels raise and pivot to hang straight down; return smoothly to upright position

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

Bassinet tilt mechanism does not function patient safety

Bassinet assembly cannot be placed in 5° and 10° tilt positions or does not return to level position smoothly

Ranked causes

1. Tilt mechanism wear, mechanical binding, or defect (common)

First check

Test standard tilt mechanism (if applicable)

Test point: Mattress tilt control lever; Bassinet assembly rear edge
Expected: Bassinet places smoothly into 5° and 10° tilt positions; returns smoothly to level position

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

Blender module sets off alarms patient safety

Alarms are triggered by the blender module during operation

Ranked causes

1. Gas source pressure or flow decreased or increased (common)

First check

Verify pipeline and cylinder gas flow

Test point: Gas inlet connections
Expected: Proper flow from pipeline and/or cylinder

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

Calibration: Auxiliary Flow Control caution

Adjust auxiliary flow control knob and valve to ensure readings match test device across full range (1.0 to 15.0 LPM); verify regulator pressure stability.

Ranked causes

1. Auxiliary flow control knob reading does not match RT200 tester reading (unknown)

First check

Set and verify auxiliary flow at 1.0 LPM

Test point: Auxiliary Outlet connected to RT200 tester high flow range (180 LPM)
Expected: 1.0 LPM (2.1 scfh) on RT200 tester
Tools: RT200 tester or equivalent

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

Calibration: Auxiliary Flow Relief Valve caution

Verify and adjust relief valve spring to maintain specified pressure limit based on module type; ensure correct pressure relief at maximum flow.

Ranked causes

1. Auxiliary relief valve pressure setting out of specification (unknown)

First check

Verify relief valve pressure for module without AutoBreath (PN 81 400 72 or 81 400 73)

Test point: Auxiliary Outlet connected to RT200 tester low pressure range (250 cm H2O)
Expected: 160 cm H2O (16 kPa) ± 10%, ±10%
Tools: RT200 tester or equivalent

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

Calibration: Auxiliary Pressure Regulator caution

Verify and adjust auxiliary pressure regulator to specified setpoint; incorrect pressure setting affects auxiliary flow control accuracy.

Ranked causes

1. Auxiliary pressure regulator not set to 20 psi (138 kPa) (unknown)

First check

Measure auxiliary pressure regulator setting

Test point: Auxiliary pressure regulator test port
Expected: 20 psi (138 kPa), Exact
Tools: Pressure gauge assembly

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

Calibration: Heater head electrical verification high voltage

Verify heater element resistance and illumination at specified AC input voltage

Ranked causes

1. Heater element resistance out of specification (unknown)

First check

Measure heater element resistance at 100V AC input

Test point: Heater element
Expected: 12Ω to 15Ω, 12 to 15Ω
Tools: Digital voltmeter (Fluke 1 8080A or equivalent)

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

Calibration: Oxygen and Air Regulators high voltage

Verify regulator output pressure matches specification for tank pressure; regulator output pressure outside tolerance indicates miscalibration.

Ranked causes

1. Regulator output pressure out of specification (unknown)

First check

Measure oxygen regulator output pressure with tank at specified pressure

Test point: Oxygen Tank Regulator white hose output
Expected: For U.S.: 65 psi ± 3 psi (448 kPa ± 21 kPa) with 1200 psi tank pressure, ±3 psi
Tools: RT200 Tester or equivalent

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

Calibration: Patient Gas Supply Pressure Regulator patient safety

Verify and adjust patient gas supply regulator to 20 psi (138 kPa) setpoint; pressure adjustment affects patient airway pressure control.

Ranked causes

1. Patient gas supply regulator pressure out of specification (unknown)

First check

Measure patient gas supply regulator pressure

Test point: TP7A test port (orange plug line location)
Expected: 20 psi (138 kPa)
Tools: Pressure gauge assembly

Calibration: PEEP pressure adjustment patient safety

PEEP pressure does not read 21 cm H2O (2 kPa) when controls set to maximum

Ranked causes

1. PEEP variable resistor out of adjustment (common)

First check

Connect patient circuit and set all controls to maximum

Test point: Patient outlet to exhalation valve port
Expected: Flow Rate, Airway Pressure Relief, and PEEP knobs at maximum

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

Calibration: PEEP valve zero adjustment patient safety

PEEP valve does not null flow when control knob turned counterclockwise

Ranked causes

1. PEEP control valve setscrews loose or PEEP knob misaligned (common)

First check

Connect exhalation valve to test device low flow connector

Test point: Exhalation valve port to RT200 connector
Expected: Connected for low flow measurement 5.0 LPM

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

Calibration: Pilot pressure adjustment patient safety

Pilot pressure circuit pressure does not read 60 cm H2O (5.9 kPa) on test device

Ranked causes

1. Pilot pressure variable resistor out of adjustment (common)

First check

Connect patient circuit and test device

Test point: Exhalation valve port to RT200 connector
Expected: Circuit connected with low pressure range set to 250 cm H2O

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

Calibration: Resuscitation Module pressure switch point patient safety

Highest pressure point does not correspond to 22 psi (152 kPa) switch point on AutoBreath Infant Resuscitator

Ranked causes

1. Timing variable resistor out of adjustment (common)

First check

Verify highest pressure point setting

Test point: Pressure measurement point
Expected: 22 psi (152 kPa), exact

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

Calibration: Suction Valve Zero Flow caution

Adjust suction control valve to eliminate leakage at zero position; suction flow should read zero when control knob is at minimum.

Ranked causes

1. Suction control knob zero position does not correspond to zero flow reading (unknown)

First check

Measure suction flow at minimum control knob position

Test point: Suction hose connected to RT200 tester
Expected: 0 LPM
Tools: RT200 tester or equivalent, clamping devices

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

Cart/bassinet docking mechanism or caster locks do not function patient safety

Cart/bassinet cannot be docked or undocked properly, or caster locks do not keep cart from moving when depressed (Birthing Room model)

Ranked causes

1. Docking latch mechanism or caster lock defect or wear (occasional)

First check

Test undocking and caster lock engagement

Test point: Cart/bassinet docking mechanism (L); Caster locks (M)
Expected: Cart/bassinet undocks smoothly; caster locks keep cart from moving when depressed

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

Chk Patient alarm does not sound at 10 minutes with 100% heater power patient safety

After 10 minutes at 100% heater power with probe connected, Chk Patient indicator does not light and alarm does not sound once

Ranked causes

1. Alarm circuit or timer malfunction (occasional)

First check

Set Heater Power to 100%

Test point: Heater Power display; up arrow key
Expected: All segments light showing 100%

1 more check with pass and fail actions are in ServiceForge. Connect ServiceForge to your AI

Controller fails to enter Pre-Warm Mode caution

Self-test completes but controller does not begin Pre-Warm Mode operation or heater power sequence not as expected (should show 10 segments for 3 min, 6 segments for 12 min, then 3 segments)

Ranked causes

1. Controller firmware or mode logic fault (unknown)

First check

Verify Pre-Warm Mode activation and heater power sequence

Test point: Pre-Warm indicator; Heater Power indicator display
Expected: Pre-Warm indicator on; Heater Power indicator displays ten segments (100%) for 3 min, reduces to six segments (60%) for 12 min, then reduces to three segments (30%)

Controller Module self-test fails to complete high voltage

Power switch turned on but self-test does not engage or display expected test pattern (all 8s, alarm indicators, mode indicators, heater power segments, alarm tones)

Ranked causes

1. Power supply or controller circuit fault (common)

First check

Verify AC power supply connection

Test point: Power connector on rear panel
Expected: AC line cord plugged into properly grounded hospital-use receptacle of correct voltage

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

Diagnostic Test #4 Key Check

Tests keypad functionality; seven zeroes appear in displays; pressing any key changes nearest 0 to 1

Ranked causes

1. Display P.C. Board (PCB1) failure (common)

First check

Press Apgar Start/Stop key; verify display segments toggle between 0 and 1

Test point: Apgar Timer and Baby Temperature displays
Expected: Corresponding segments toggle between 0 and 1

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

Display shows "Lo" in baby temperature display patient safety

Baby temperature display shows "Lo" indicating very low or invalid temperature reading

Ranked causes

1. Skin temperature probe reads below 18°C (occasional)

First check

Measure skin temperature probe temperature

Test point: Skin temperature probe reading
Expected: > 18°C

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

EEPROM status flag incorrect

Diagnostic Test #7 displays EEPROM status flag on Baby Temperature display showing values other than 001 (normal) or 008 (acceptable)

Ranked causes

1. EEPROM data block never initialized or corrupted (occasional)

First check

Access off-line Diagnostic Mode and proceed to Diagnostic Test #7

Test point: Baby Temperature display
Expected: Status flag 001 or 008

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

Error log clear function not working

Error log does not clear when pressing Mode Up arrow key; Baby Temperature display does not go blank after attempting to clear error log during Diagnostic Test #18

Ranked causes

1. Power and Control P.C. Board (PCB2) failure (common)

First check

Press Up arrow Mode Select key during error log display

Test point: Baby Temperature display
Expected: Error log clears and Baby Temperature display goes blank; reference number returns to 0:01 on Apgar Timer

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

Error log not displaying

Error Log Display test fails; error reference numbers 0:01-0:04 do not appear on Apgar Timer display or error codes do not appear on Baby Temperature display during Diagnostic Test #18

Ranked causes

1. Display P.C. Board (PCB1) failure (common)

First check

Access Diagnostic Test #18 and verify error log display

Test point: Apgar Timer display and Baby Temperature display
Expected: Error reference numbers 0:01-0:04 appear on Apgar Timer; pressing °C/°F key cycles through errors showing on both displays

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Examination Light does not turn on or off caution

Pressing Examination Light key does not turn on light, or pressing again does not turn it off

Ranked causes

1. Examination Light key circuit or lamp malfunction (occasional)

First check

Press Examination Light key to turn on

Test point: Examination Light key; Light fixture
Expected: Examination light comes on

1 more check with pass and fail actions are in ServiceForge. Connect ServiceForge to your AI

Heater does not shut down after 15 minutes total runtime patient safety

After 15 minutes total (10+5 min), heater does not shut down, Heater Power indicators do not go off, or alarm does not sound continuously with ramping volume

Ranked causes

1. Heater shutdown circuit or safety timer fault (common)

First check

Verify heater shutdown after 15 minutes total

Test point: Heater Power indicators; Heater on/off state; Alarm buzzer
Expected: Heater shuts down; Heater Power indicators go off; Alarm sounds continuously and ramps up in volume

More symptoms

Heater ON but indicators are OFF
Heater Power controls do not function in Manual Mode
High Temperature alarm does not activate at ≥39°C
High Temperature alarm does not stop when temperature lowered
Inspiratory/Expiratory ratio greater than 1:2.4 and less than 1.6:1 or 1:1
Instrument tray does not swing or function
Keypad Lock function not operating
No power and Power Fail alarm does not activate
Pass-through drawer does not slide or function
Patient gas supply measured flow out of specified range
Patient Gas Supply measured flow outside specification
Patient gas supply pressure relief gauge exceeds 60 cm H2O
Patient Gas Supply pressure relief gauge exceeds limit
Perform watchdog timer test
Power Fail alarm does not activate on loss of AC power
Probe Disconnect alarm does not trigger
Silence/Reset key does not restart heater
Silence/Reset key does not stop alarm in Baby Mode
Skin probe heating too rapid or too close to heater element
System Fail alarm activates with error code
System Fail alarm activates without error code
Temperature below set point does not trigger alarm
Temperature override above set point does not trigger alarm
Temperature override alarm does not silence for 10 minutes
Temperature Override Mode (>37°C) does not activate
Temperature Override Mode does not deactivate at lower threshold
Unit configuration mismatch with jumper settings
Warmer head assembly does not swivel or is not locked in center
Writing surface does not slide or function
X-ray cassette tray does not slide or function

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Error codes

Code	Meaning	Trigger	Severity
`10`	Power fail circuit failure	Power failure detection circuit malfunctions	error
`11`	Central processing unit (CPU) voltage is out of specification	CPU supply voltage exceeds tolerance	error
`12`	Keypad failed	Keypad not responding or false inputs	error
`13`	ROM test failure	ROM checksum or read test fails	error
`14`	RAM test failure	RAM read/write test fails	error
`15`	EEPROM test failure	EEPROM checksum or access test fails	error
`16`	Analog/digital (A/D) offset is out of specification	A/D converter offset calibration exceeds tolerance	error
`17`	A/D gain is out of specification	A/D converter gain calibration exceeds tolerance	error
`18`	DELETED by software version 1.06 in 1998. Older units may still display this code	Unit running software version prior to 1.06	info
`2`	AC line voltage is too high	AC mains voltage exceeds system specification	warning
`20`	External watchdog timer failure	Watchdog timer circuit failure or timeout	error
`21`	Difference between ambient temperature probe 1 and 2. Displayed temperatures exceed 0.4°C in diagnostic test #10	Ambient temperature probes reading difference >0.4°C	warning
`22`	36°C probe calibration error exceeds 0.2°C	Skin probe calibration accuracy exceeds ±0.2°C error	warning
`23`	Ambient temperature is above 32°C (90°F)	Ambient temperature sensor reads above 32°C threshold	warning
`24`	Internal malfunction	Unspecified internal system failure detected	critical
`25`	Internal malfunction	Unspecified internal system failure detected	critical
`3`	Solid state relay (SSR) path short circuits	SSR develops short circuit condition	error
`4`	Heater circuit failed (short circuit)	Heater circuit develops short circuit	error
`5`	SSR #1 failed (open circuits or heater open circuits)	SSR #1 develops open circuit or heater opens	error
`6`	SSR #2 failed (open circuits or heater open circuits)	SSR #2 develops open circuit or heater opens	error
`7`	Safety Relay failed (short circuits)	Safety relay develops short circuit	error
`8`	AC heater current is high	Heater current exceeds specification	warning
`9`	Hardware detects a high temperature >39.5°C (103.1°F)	Temperature sensor reads above 39.5°C threshold	error

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

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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.