Hospital beds

Stryker Bed Intouch Critical Care: troubleshooting and error codes

The ServiceForge knowledge base holds 131 documented symptoms for the Stryker Bed Intouch Critical Care, with 376 ranked causes, 231 diagnostic checks with test points and expected values, and 71 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

Support surface has no power caution

Mattress/support surface unit is completely unpowered; no LED lights or alarm sounds when powered on

Ranked causes

1. Power cord disconnected or improperly seated (common)
2. Foot box connector disconnected from controller (common)
3. Fuses blown above foot box power cord connection (occasional)
4. Main fuse on power board open (occasional)
5. No 120 VAC at power inlet (occasional)
6. Power inlet filter failed (occasional)
7. Transformer failed (rare)
8. Power board failed (rare)

First check

Power cord connection

Test point: Power cord to wall outlet
Expected: Firmly seated connection

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

Foot box overheated high voltage

Foot box temperature exceeds 140°F (60°C); unit auto-shuts down with message 'Auto. Overload Caused a Power Shutdown.'

Ranked causes

1. Kinked or restricted supply tubing (common)
2. Kinked low air loss tubing (common)
3. Plugged bulkhead fitting at foot box (occasional)
4. Kinked tubing from compressor to bulkhead (occasional)
5. Supply tubing too close or touching sensor U5 (occasional)
6. Blue cable white/green or orange/white wire intermittence (occasional)
7. Faulty transformer with high no-load current (rare)

First check

Allow unit to cool; reset service log and cycle power

Test point: Foot box temperature
Expected: Below 140 degrees F (60 degrees C)

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

Foot end controller overtemperature shutdown caution

Foot end control unit temperature exceeds 60 degrees Celsius; system displays auto-shutdown message and power is disabled.

Ranked causes

1. Kink or blockage in air supply hose to support surface (common)
2. Kink in low-pressure relief hose (occasional)
3. Blockage in guard fitting on foot end controller (occasional)
4. Kink in compressor discharge hose (occasional)
5. Supply hose too close to or contacting temperature sensor U5 (occasional)
6. Transformer no-load current exceeds specification (occasional)
7. Temperature sensor white/green or orange/white wire integrity issue (occasional)

First check

Allow unit to cool and reset service alarm

Test point: Foot end controller
Expected: Temperature drops below 60°C

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

Foot-end box overheating caution

Excessive temperature in foot-end control box above 60°C; system displays auto-shutdown message and halts operation

Ranked causes

1. Blue cable white/green and orange/white wire short or fault (occasional)
2. Supply tubing kinked or twisted (common)
3. Low-loss air tubing kinked or twisted (occasional)
4. Bulkhead fitting blocked (occasional)
5. Compressor-to-fitting tubing kinked or twisted (occasional)
6. Supply tubing too close to or touching temperature sensor U5 (occasional)
7. Transformer no-load current excessive (rare)

First check

Allow system to cool and reset

Test point: Foot-end box temperature
Expected: Temperature returns below 60°C

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

Foot-of-bed control box overtemperature caution

Temperature in foot-of-bed control box exceeds 60 °C; displays auto overload power shutdown message

Ranked causes

1. Blue cable white-green and orange-white conductors short or high resistance (occasional)
2. Kinked or blocked supply hose in mattress (occasional)
3. Kinked return hose causing low air loss (occasional)
4. Wall fitting at foot-of-bed control box blocked or restricted (occasional)
5. Kinked compressor-to-wall fitting hose (occasional)
6. Supply hose touching sensor U5 on power board (occasional)
7. Transformer no-load current exceeds 50 mA (occasional)

First check

Allow product to cool

Test point: Foot-of-bed control box
Expected: Temperature drop below 60 °C

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

Cell in diagnostic test does not inflate to 50 mmHg in 3 minutes

Production test code during diagnostic test: cell inflation fails to reach 50 mmHg pressure within 3 minutes

Ranked causes

1. Hose leaks at connections (common)
2. Leaks in cells (common)
3. CPR latch or O-ring defective (occasional)
4. Low compressor output during initial inflation (common)
5. Kinked supply hose in mattress deck (common)
6. Wall connector at foot-end control box clogged (occasional)

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

Cell pressurization during diagnostic test exceeds 3 minutes

During diagnostic test, cell fails to reach 50 mmHg within 3 minutes; displayed only on service screen

Ranked causes

1. Leak in hose connections (common)
2. Leak in cells (common)
3. Resuscitation port not fully inserted (occasional)
4. Low compressor output (common)
5. Kinked supply hose (occasional)
6. Blockage in baffle fitting (occasional)

First check

Inspect hose connections for leaks

Test point: All hose fittings and connections
Expected: No leaks; connections secure

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

Compressor runs continuously during rotation cell inflation caution

Compressor operates at 100% for extended period during rotation cell inflation. May also occur if rotation frequency parameters modified without stopping treatment first.

Ranked causes

1. Solenoid valve stuck or pressure sensor monitoring wrong cell (common)
2. Compressor output below specification (occasional)
3. Supply tubing kinked or obstructed (occasional)
4. Bulkhead fitting blocked at foot-end box (occasional)
5. Main valve 'M' is blocked (occasional)
6. CPR plug or o-ring not properly seated (occasional)

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

Diagnostic test cell fails to inflate during production test

During diagnostic test from service screen, cell does not reach 50 mmHg pressure within 3 minutes; alarm code 92 displayed.

Ranked causes

1. Tubing leaks at connections (common)
2. Leaks in test cell (common)
3. CPR engagement or O-ring failure (occasional)
4. Low compressor output flow (occasional)
5. Kinked supply tubing in support surface (occasional)
6. Plugged bulkhead fitting at foot box (occasional)

First check

Inspect tubing connections for leaks

Test point: All tubing junctions and fittings
Expected: No visible leaks or separation

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

Diagnostic test cells fail to reach 50 mmHg pressure within 3 minutes

Cells do not inflate to 50 mmHg during production leak diagnostic test on service display

Ranked causes

1. Leak in supply tubing connections (common)
2. Leak in cells (common)
3. CPR not fully connected or O-rings damaged (occasional)
4. Compressor output below specification (common)
5. Support surface supply tube kinked or damaged (occasional)
6. Footend coupling blocked or defective (occasional)

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

Excessive temperature in foot end assembly caution

Foot end enclosure temperature abnormally high, triggering overheat alarm and automatic power shutdown. System displays auto overload shutdown message.

Ranked causes

1. Kinked or obstructed supply tubing (common)
2. Low-loss tubing kinked or blocked (common)
3. Connector coupling at foot end blocked or failed (occasional)
4. Compressor outlet tubing kinked (occasional)
5. Supply tubing too close to or in contact with temperature sensor U5 (occasional)
6. Transformer no-load current excessive (rare)

First check

Allow foot end assembly to cool and reset service alarm

Test point: Foot end enclosure temperature
Expected: Temperature drops below 60°C after cooling

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

Large pressure leak detected patient safety

Support surface pressure setpoint not achieved within 10 minutes during inflation. System unable to complete Preparing Surface screen. Service Required alert displayed.

Ranked causes

1. Tubing leaks at connections (common)
2. Leakage from support surface cells (common)
3. CPR connection improperly connected or seals compromised (occasional)
4. Compressor output flow below specification during initial inflation (occasional)
5. Supply tubing kinked or obstructed (occasional)
6. Foot end connector coupling blocked or failed (occasional)

First check

Inspect all tubing connections for air leaks

Test point: All connection points between tubing and components
Expected: No air leaks, all connections sealed

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

Percussion cell did not inflate to 50 mmHg within 3 minutes during diagnostic test caution

During diagnostic test from Service screen, the tested cell fails to reach 50 mmHg pressure within 3 minute timeout.

Ranked causes

1. Tubing leak at connections (common)
2. Air cell leak (common)
3. CPR plug or o-ring not properly seated (occasional)
4. Compressor output below specification (common)
5. Supply tubing kinked or obstructed (occasional)
6. Bulkhead fitting blocked at foot-end box (occasional)

First check

Inspect tubing connections for leaks

Test point: All tubing connections
Expected: No air leaks at connections

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

Percussion motor does not run

Percussion motor fails to operate during therapy; no motor rotation or momentary spinning then stopping.

Ranked causes

1. Drive belt broken or worn (common)
2. Percussion shaft binding or bearing wear (common)
3. Loose connectors at head box control PC board (common)
4. Percussion motor failure or control board fault (occasional)
5. Optical sensor failure (occasional)
7. Misaligned optical sensor (occasional)

First check

Inspect drive belt condition

Test point: Percussion belt
Expected: Belt intact, no fraying or wear

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

Percussion motor not working

Percussion motor does not operate; may fail to start or run intermittently

Ranked causes

1. Defective or worn drive belt (common)
2. Percussion shaft stuck or bearing wear (common)
3. Loose connectors at control board (occasional)
4. Motor not receiving power (common)
5. Optical sensor malfunction (occasional)
6. Sensor alignment incorrect (occasional)

First check

Inspect drive belt for defects or wear

Test point: Percussion motor drive belt
Expected: Belt intact and not worn

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

Pressure setpoint not reached within time limit patient safety

Support surface pressure setpoint not attained within 10 minutes; system cannot complete Preparing Surface screen and displays service-required message

Ranked causes

1. Leak in tubing connections (common)
2. Leak in support surface bladder cells (common)
3. CPR button cap not fully seated or O-ring damaged (occasional)
4. Compressor output flow rate low (occasional)
5. Supply tubing kinked or twisted (occasional)
6. Bulkhead fitting blocked (occasional)

First check

Inspect all tubing connections for leaks

Test point: All tubing connection points
Expected: No air leaks detected during inflation
Tools: Soap solution or pressure gauge

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

Sensor select solenoid valve issue - compressor runs continuously

Compressor runs at 100% continuously while filling rotation cell; may occur when rotation speed parameters changed without stopping therapy first

Ranked causes

1. Sensor select solenoid valve stuck de-energized or energized; pressure transducer monitoring wrong cell (common)
2. Low compressor output during initial inflation (common)
3. Kinked supply hose in mattress deck (common)
4. Wall connector at foot-end control box clogged (occasional)
5. Main valve (marked M) stuck (occasional)
6. CPR latch or O-ring defective (occasional)

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

Sensor select solenoid valve malfunction caution

Compressor running at 100% while filling rotation cell; also occurs when rotation parameters changed without stopping aid

Ranked causes

1. Sensor select solenoid valve stuck in energized state (occasional)
2. Low compressor output (common)
3. Kinked supply hose (occasional)
4. Blockage in baffle fitting (occasional)
5. Main valve stuck (rare)
6. Resuscitation port not fully inserted (occasional)

First check

Observe valve during diagnostic test rotation cell fill

Test point: Pressure display during left cell (patient perspective) inflation
Expected: Pressure display increases when left cell fills

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

Sensor select solenoid valve malfunction - compressor at 100% during rotation

Compressor runs continuously at 100% while filling rotation cell, or error triggered by changing rotation rate without stopping therapy first

Ranked causes

1. Sensor select solenoid valve stuck or misaligned, monitoring wrong cell (common)
2. Compressor output below specification (common)
3. Support surface supply tube kinked or damaged (occasional)
4. Footend coupling blocked or defective (occasional)
5. Main valve M stuck, diverting airflow away from cells (occasional)
6. CPR not fully connected or O-rings damaged (occasional)

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

Sensor select solenoid valve malfunction - compressor overrun caution

Compressor runs at 100% for extended time during rotation cell filling; error code 104-0. May occur if rotation rate parameters changed without stopping therapy.

Ranked causes

1. Sensor select solenoid valve stuck in wrong state (common)
2. Low compressor output flow (occasional)
3. Kinked supply tubing in support surface (occasional)
4. Plugged bulkhead fitting at foot box (occasional)
5. Main valve sticking or blocking air flow (occasional)
6. CPR engagement or O-ring seal failure (occasional)

First check

Run diagnostic test and observe left cell inflation

Test point: Pressure display during diagnostic test
Expected: Pressure display changes during left rotation cell fill

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

Surface pressure does not reach set peak within 10 minutes patient safety

Product fails to reach set peak pressure within 10 minutes; may not complete 'Preparing Surface' screen display

Ranked causes

1. Hose leaks at connections (common)
2. Leaks in mattress cells (common)
3. CPR latch and O-ring seals faulty (occasional)
4. Compressor output below 28-32 LPM during initial inflation (occasional)
5. Kinked supply hose in mattress (occasional)
6. Wall fitting blocked at foot-of-bed control box (occasional)

First check

Inspect hose connections for leaks

Test point: All hose connection points
Expected: No air leaks at connections

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

Surface pressure setpoint not reached within time limit patient safety

Support surface failed to reach the target pressure setpoint within 10 minutes; 'Preparing Surface' screen did not complete; message 'Service Required by Qualified Service Personnel' is displayed.

Ranked causes

1. Air hose leak at connections (common)
2. Leak in support surface air cells (common)
3. CPR button not fully inserted or O-ring damaged (common)
4. Compressor output below specification (occasional)
5. Kink in air supply hose to support surface (occasional)
6. Blockage in guard fitting on foot end controller (occasional)

First check

Inspect all air hose connections for leaks

Test point: All air hose connection points
Expected: No air leakage at connections; all connections tight

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

CPR pendant communication lost caution

No communication between touchscreen display and headboard control box. Headboard emits sound on disconnect. System displays pendant disconnected condition.

Ranked causes

1. Installation procedure not followed; pendant not connected before power-up (occasional)
2. Black connector not secured or torque-locked (common)
3. Wiring continuity loss in black cables from foot PCB to display PCB (common)
4. Continuity loss in blue, white/orange, white/blue, blue/white conductors between foot and head boxes (common)
5. Continuity loss in yellow and clear cables between foot and head end (occasional)

First check

Verify black connector fully seated and torque-locked

Test point: Black cable connector between pendant and headboard
Expected: Connector fully seated, no movement, secure torque-lock

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

Huge pressure leak detected

Set point pressure not reached within 10 minutes; unit unable to complete 'Preparing Surface' screen; displays 'Service Required by Qualified Service Personnel' message.

Ranked causes

1. Tubing leaks at connections (common)
2. Cell leaks (common)
3. CPR engagement or O-ring failure (occasional)
4. Kinked supply tubing in support surface (occasional)
5. Plugged bulkhead fitting at foot box (occasional)

First check

Verify compressor output flow rate

Test point: Foot box compressor outlet
Expected: 28 to 32 lpm, 28-32
Tools: Flow meter

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

No communication between touchscreen and head-end controls caution

Touchscreen cannot communicate with head-end control box; head-end box beeps during disconnection

Ranked causes

1. Installation procedure not followed; bed powered on without dial connected (occasional)
2. Black cable connector loose or unlocked (common)
3. Black cable continuity fault (occasional)
4. Blue cable wire continuity fault (occasional)
5. Yellow cable wire continuity fault (occasional)

First check

Verify black cable connector is tight and locked

Test point: Black cable connector
Expected: Connector fully seated and locked

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

Pendant disconnected heartbeat lost

No communication between touchscreen and headbox control; headbox beeps during disconnect.

Ranked causes

1. Installation procedure not followed; powered without display connected (common)
2. Black cable connector not secure or twisted locked (common)
3. Black cable wire continuity failure (occasional)
4. Blue cable wire continuity failure (occasional)
5. Yellow cable clear wire continuity failure (rare)

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

Stepper motor cannot find home position caution

Stepper motor/rotary valve unable to locate initial position within specified step count after power-up

Ranked causes

1. Stepper motor not completing home sequence correctly (occasional)
2. Stepper motor or valve mechanism binding or jamming (occasional)
3. Stepper motor control PCB connectors not fully engaged (occasional)
4. Optical sensor power supply voltage low or absent (occasional)
5. Optical sensor output signal incorrect (occasional)

First check

Verify stepper motor home position sequence

Test point: Stepper motor and rotary valve during power-up
Expected: Two complete rotations, then stops with flag in front of optical sensor

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

Stepper motor could not find home position caution

Stepper motor unable to locate home within specified number of steps; error code 77 displayed.

Ranked causes

1. Stepper motor not completing revolutions or stopping at flag (common)
2. Valve bound or jammed (common)
3. Connectors not fully seated at TB9 and TB10 (occasional)
4. Optical sensor voltage missing (occasional)
5. Optical sensor output voltage incorrect (occasional)

First check

Measure optical sensor voltage

Test point: TB9 orange and green wires
Expected: 1.2 volts V

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

Stepper motor does not complete path retraction within step count limit

Stepper motor does not find return path in specified number of steps during startup

Ranked causes

1. Stepper motor or rotary valve does not complete full rotations during startup (common)
2. Rotary valve restriction or jamming (occasional)
3. TB9 or TB10 connectors not fully seated (occasional)
4. Optical sensor missing 1.2 V supply voltage (occasional)
5. Optical sensor output voltage out of range (occasional)

First check

Observe stepper motor and rotary valve operation during startup

Test point: Stepper motor and rotary valve assembly
Expected: Motor completes two full rotations, marker aligns with optical sensor at end

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

Stepper motor Find Home position failure caution

Stepper motor unable to locate Find Home position within specified number of steps. Rotary valve cannot home properly. Alarm generated on stepper motor failure.

Ranked causes

1. Stepper motor or rotary valve does not complete two revolutions or flag not positioned in front of optical sensor (common)
2. Rotary valve stiff, limited, or stuck; not rotating freely by hand (common)
3. Stepper motor and valve connectors not fully seated on TB9 and TB10 PCB (occasional)
4. Optical sensor supply voltage out of specification (occasional)
5. Optical sensor output voltage out of specification when flag aligned or misaligned with sensor (occasional)

First check

Verify stepper motor and rotary valve complete two revolutions and flag homes

Test point: Motor and valve operation during unit power-on
Expected: Two complete revolutions with flag stopped in front of optical sensor

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

Stepper motor home position not found caution

Stepper motor/rotary valve could not locate its home position within the specified number of steps during startup.

Ranked causes

1. Stepper motor not completing two full revolutions or stalled (common)
2. Valve stuck or binding mechanically (common)
3. Connector not fully seated on TB9 or TB10 (occasional)
4. Optical sensor power supply voltage out of range (occasional)
5. Optical sensor detection signal out of specification (occasional)

First check

Observe stepper motor startup operation

Test point: Stepper motor/rotary valve during system startup
Expected: Motor completes two full revolutions and stops with flag in front of optical sensor

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

Left CPR button not detected patient safety

Left resuscitation button on patient side is not being detected by the system.

Ranked causes

1. CPR button not fully seated or pressed in (common)
2. Blue wires not connected to CPR switch common and normally open contacts (occasional)
3. No continuity through CPR switch (occasional)
4. Connector not fully seated on TB6 control board (occasional)

First check

Verify left CPR button is fully seated and pressed

Test point: Left CPR button on bed perimeter
Expected: Button fully inserted and engaged in seated position

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

Left CPR connector not recognized patient safety

Left CPR button on patient side not detected by control system

Ranked causes

1. Left CPR connector not fully seated or snapped (common)
2. Blue wires not connected to CPR switch contacts (occasional)
3. CPR switch contact continuity broken (occasional)
4. TB6 connector not fully seated in control PCB (occasional)

First check

Visual inspection of left CPR connector

Test point: CPR connector on left patient side
Expected: Fully locked and snapped

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

Left CPR plug not detected patient safety

Left side CPR emergency plug not being detected by system. Left CPR function unavailable or alarm triggered.

Ranked causes

1. Left CPR plug not fully connected or not seated with pressure (common)
2. Blue conductors not connected to CPR switch contacts on headboard (occasional)
3. CPR switch continuity failure between blue conductors (occasional)
4. Connector not fully connected to TB6 PCB on headboard (occasional)

First check

Verify left CPR plug fully connected and seated with pressure

Test point: Left side CPR plug connection on mattress
Expected: Plug fully inserted, seated with pressure, no movement

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

Pendant disconnected from head end controller caution

No heartbeat (communication loss) between touch screen pendant and head end control unit; head end controller emits beep during disconnection.

Ranked causes

1. Installation procedure not followed; support surface activated without pendant connected (common)
2. Black cable connector loose or not fully locked (common)
3. Continuity failure in black cable wires (occasional)
4. Continuity failure in colored cable wires between controllers (occasional)

First check

Verify black cable connector is seated and locked

Test point: Black cable connector
Expected: Connector fully seated and rotated to locked position

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

Pendant disconnected from head-of-bed control box

No connection between touchscreen pendant and head-of-bed control box; beep sounds when unplugged

Ranked causes

1. Black cable connector not fully seated or locked (common)
2. Wire continuity broken in black cable (occasional)
3. Continuity loss in blue cable signal wires (occasional)
4. Continuity loss in yellow cable wire (occasional)

First check

Visual inspection of black cable connector

Test point: Black cable at control boxes
Expected: Firmly seated and locked by turning

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

Percussion cell inflation pressure not reached within 10 seconds

Percussion cells fail to inflate to pressure setpoint within 10 second window during therapy initiation

Ranked causes

1. Leak in percussion cells (common)
2. Compressor output below specification (common)
3. Support surface supply tube kinked or damaged (occasional)
4. Footend coupling blocked or defective (occasional)

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

Percussion cells do not inflate to set pressure

Percussion cells fail to inflate to programmed peak pressure within 10 seconds

Ranked causes

1. Leaks in percussion cells (common)
2. Low compressor output during initial inflation (common)
3. Kinked supply hose in mattress deck (common)
4. Wall connector at foot-end control box clogged (occasional)

First check

Test compressor output

Test point: Foot-end control box supply line
Expected: 28–32 LPM during initial inflation, 28–32 LPM
Tools: Flow meter

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

Percussion cells fail to inflate to pressure within 10 seconds caution

Percussion support surface cells do not reach configured pressure setpoint within 10 seconds of inflation attempt; alarm code 91 displayed.

Ranked causes

1. Leaks in percussion cells or tubing (common)
2. Low compressor output flow (common)
3. Kinked supply tubing in support surface (occasional)
4. Plugged bulkhead fitting at foot box (occasional)

First check

Inspect percussion cells for leaks

Test point: Percussion cell bladders
Expected: No visible leaks, tears, or punctures

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

Percussion cells not inflated to target pressure within 10 seconds caution

Air cells for percussion therapy do not reach set pressure within 10 second timeout during initial inflation.

Ranked causes

1. Air cell leak (common)
2. Compressor output below specification (common)
3. Supply tubing kinked or obstructed (occasional)
4. Bulkhead fitting blocked at foot-end box (occasional)

First check

Inspect percussion cells for air leaks

Test point: Percussion cells
Expected: No visible leaks or air escape

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

Percussion cells not pressurized within 10 seconds

Percussion air cells fail to reach set pressure within 10 seconds during inflation

Ranked causes

1. Leak in percussion cells (common)
2. Low compressor output (common)
3. Kinked supply hose (occasional)
4. Blockage in baffle fitting (occasional)

First check

Visually inspect percussion cells for leaks

Test point: Percussion cell assemblies
Expected: No visible leaks

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

Right CPR button not detected patient safety

Right resuscitation button on patient side is not being detected by the system.

Ranked causes

1. CPR button not fully seated or pressed in (common)
2. Purple wires not connected to CPR switch common and normally open contacts (occasional)
3. No continuity through CPR switch (occasional)
4. Connector not fully seated on TB6 control board (occasional)

First check

Verify right CPR button is fully seated and pressed

Test point: Right CPR button on bed perimeter
Expected: Button fully inserted and engaged in seated position

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

Right CPR connector not recognized patient safety

Right CPR button on patient side not detected by control system

Ranked causes

1. Right CPR connector not fully seated or snapped (common)
2. Purple wires not connected to CPR switch contacts (occasional)
3. CPR switch contact continuity broken (occasional)
4. TB6 connector not fully seated in control PCB (occasional)

First check

Visual inspection of right CPR connector

Test point: CPR connector on right patient side
Expected: Fully locked and snapped

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

Right CPR plug not detected patient safety

Right side CPR emergency plug not being detected by system. Right CPR function unavailable or alarm triggered.

Ranked causes

1. Right CPR plug not fully connected or not seated with pressure (common)
2. Violet conductors not connected to CPR switch contacts (occasional)
3. CPR switch continuity failure between violet conductors (occasional)
4. Connector not fully connected to TB6 PCB on headboard (occasional)

First check

Verify right CPR plug fully connected and seated with pressure

Test point: Right side CPR plug connection on mattress
Expected: Plug fully inserted, seated with pressure, no movement

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

Support surface will not inflate caution

Mattress does not inflate or inflate completely; user cannot achieve proper air support

Ranked causes

1. Air leak in system (common)
2. Unresolved error messages logged in system (occasional)
3. Pump not running (common)
4. Main air hose disconnected or kinked (occasional)

First check

Touch screen for alarm messages

Test point: Touch screen display
Expected: No critical errors

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

12 V power supply voltage below 10 V high voltage

12 V power supply voltage drops below 10 V.

Ranked causes

1. Loss of input supply voltage (unknown)
2. 12 V regulator failure (unknown)
3. Control board has failed (occasional)

First check

Verify primary supply voltage at control board

Test point: J4 pins 3 and 4, and TB1 pins 2 and 3
Expected: 24–30 V DC unfiltered, 24–30

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

12V power supply below 10 volts high voltage

12-volt supply voltage drops below 10V threshold

Ranked causes

1. Insufficient unfiltered 24-30V input at power PCB or control PCB (common)
2. 12V regulator output low (common)
3. Control PCB failure (occasional)

First check

Measure unfiltered DC input voltage at power PCB

Test point: J4 pin 3 to pin 4
Expected: 24-30 VCC, 24-30

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

Excessive temperature in head end assembly caution

Head end enclosure temperature abnormally high above 60°C, triggering overheat alarm and automatic power shutdown.

Ranked causes

1. Percussion motor overheated or running excessively (common)
2. Percussion motor belt tension loose or improper (common)
3. Connecting rod bearings worn or seized (occasional)

First check

Allow head end assembly to cool

Test point: Head end enclosure temperature
Expected: Temperature drops below 60°C

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

Footboard has no support surfaces display but support surface running and head box alarming caution

Touch screen displays no mattress surface information; mattress is inflating/deflating; head box is sounding alarm

Ranked causes

1. Foot box connector disconnected from bed controller (common)
2. Red connector improperly connected (occasional)
3. Controller module failed (rare)

First check

Black connector at foot box to bed controller

Test point: Black connector between foot box and bed frame controller
Expected: Firmly seated connection

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

Head box overheated caution

Head box temperature exceeds 140°F (60°C); unit auto-shuts down with message 'Auto. Overload Caused a Power Shutdown.'

Ranked causes

1. Overheated percussion motor (common)
2. Incorrect percussion motor belt tension (common)
3. Worn connecting rod bearing (occasional)

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

Head end controller overtemperature shutdown caution

Head end control unit temperature exceeds 60 degrees Celsius; system displays auto-shutdown message and power is disabled.

Ranked causes

1. Percussion motor overheating (common)
2. Percussion motor belt tension too tight (common)
3. Connecting rod bearing failure (occasional)

First check

Inspect percussion motor for excessive heat

Test point: Percussion motor housing
Expected: Motor cool enough to touch

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

Head-end box overheating caution

Excessive temperature in head-end control box above 60°C; system displays auto-shutdown message and halts operation

Ranked causes

1. Percussion motor overheated (common)
2. Percussion motor belt tension incorrect (occasional)
3. Connection rod bearing worn or dry (occasional)

First check

Verify percussion motor is not overheated

Test point: Percussion motor
Expected: Motor temperature normal, not excessively hot to touch

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

Head-of-bed control box overtemperature caution

Temperature in head-of-bed control box exceeds 60 °C; displays auto overload power shutdown message

Ranked causes

1. Percussion motor overheating (common)
2. Percussion motor belt tension too high (occasional)
3. Connecting rod bearing seized or worn (occasional)

First check

Inspect percussion motor for overheating

Test point: Percussion motor assembly
Expected: Motor cool to touch, no visible damage or debris

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

No pressure difference between rotation circuits

System detects no pressure difference between two rotation circuits; both rotation cells inflating simultaneously

Ranked causes

1. CPR latch or O-ring defective (common)
2. Leak path between rotation cells (common)
3. Alarm sensitivity issue at very low rotation speed or when patient moves or no patient on surface (rare)

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

No pressure differential detected between rotation circuits caution

System failed to detect pressure difference between two rotation circuits; both rotation cells inflate simultaneously.

Ranked causes

1. CPR plug or o-ring not properly seated (occasional)
2. Leak path exists between rotation cells (occasional)
3. Alarm triggered by low rotation frequency, patient movement, or absent patient (common)

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

Rotation cells both inflate simultaneously - no pressure differential

System detects no pressure difference between two rotation circuits; both rotation cells inflate at same time

Ranked causes

1. CPR not fully connected or O-rings damaged (common)
2. Leak between rotation cells (common)
3. Alarm sensitivity increased by low rotation rate, patient movement, or no patient on surface (occasional)

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

Sensor select solenoid valve malfunction - dual cell filling caution

System fails to detect pressure difference between two rotation circuits; both rotation cells filling simultaneously; error code 104-1.

Ranked causes

1. CPR engagement or O-ring seal failure (common)
2. Leakage path between rotation cells (common)
3. Low rotation rate settings or patient movement interference (occasional)

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

12-volt power supply below 10 volts caution

12 VDC power supply voltage measured below 10 volts

Ranked causes

1. Low or missing unfiltered DC supply at power board (common)
2. Defective 12V regulator on control board (common)

First check

Measure unfiltered DC voltage on power board

Test point: Power board J4 pins 3 and 4
Expected: 24 to 30 VDC, 24-30 VDC
Tools: Voltmeter

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

12-volt power supply below minimum high voltage

12-volt power supply drops below 10 volts; alarm code 101 displayed.

Ranked causes

1. Low or failed 24-30 volt input supply (common)
2. Voltage regulator or control board failure (occasional)

First check

Measure unfiltered input voltage

Test point: Power PC board J4 pin 3 to pin 4
Expected: 24 to 30 volts DC VDC, 24-30 VDC
Tools: DMM

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

12V power supply falls below 10V high voltage

12-volt power supply voltage drops below 10 volts

Ranked causes

1. Main power supply or regulator failure (common)
2. Control board 12V regulator defective (occasional)

First check

Measure unfiltered DC voltage at power board

Test point: J4 pins 3 and 4
Expected: 24–30 V DC, 24–30 V
Tools: DMM

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

More symptoms

Bladder will not inflate or deflate
Both CPR buttons not detected
Both CPR connectors not recognized
Both CPR plugs not detected
Diagnostic test cannot start
Electromagnetic valve over-current detected
Excessive pressure detected in unintended air cell
Excessive pressure in unintended air cell
Over-current detected in solenoid valve
Over-current detected on percussion motor
Over-current detected on stepper motor drive
Over-pressure detected in air cell
Over-pressure detected in non-filling cell
Percussion motor over-current alarm
Percussion motor over-current detected
Percussion motor overcurrent detected
Percussion motor overvoltage detected
Solenoid valve over-current detected
Solenoid valve overcurrent detected
Solenoid valve overvoltage detected
Stepper motor over-current detected
Stepper motor overcurrent detected
Stepper motor overvoltage detected
Surface diagnostic test fails or shows inaccurate results
Abnormal foot box temperature
Abnormal foot-of-bed control box temperature
Abnormal head box temperature
Compressor restart cycling too frequent
Compressor restarted 20 times with less than 20 seconds between restarts
Control board memory corrupted
Control panel memory corrupted
Controller has detected corrupted memory
Diagnostic test not completing or reporting inaccurate results
Diagnostic test produces inaccurate results
Excessive over-temperature at foot end within 24 hours
Excessive over-temperature at head end within 24 hours
Foot end controller abnormal temperature warning
Foot end high temperature alarm occurred twice in 24 hours
Foot end over-temperature service alert
Foot end over-temperature service required
Foot-end box low temperature warning
Footend temperature excessive, two or more events in 24 hours
Head elevation 60 degrees or greater
Head elevation exceeds 60 degrees
Head elevation exceeds 60 degrees during rotation treatment
Head elevation exceeds safe rotation therapy angle
Head end controller abnormal temperature warning
Head end high temperature alarm occurred twice in 24 hours
Head end over-temperature service alert
Head end over-temperature service required
Head-end box low temperature warning
Head-of-bed control box abnormal temperature
Headend temperature excessive, two or more events in 24 hours
Low pressure compressor restart cycling
Low pressure leak detected
Max Inflate function time limit exceeded
Max Inflate function timeout
Max Inflate time limit reached
Max Inflate timeout exceeded
Memory corruption detected
Overpressure reading in non-target cell
Small pressure leak or compressor cycling
System lost power and restarted
System power cycle occurred
System power loss and restart
System power reset occurred
System reset occurred
Turn Assist function time limit exceeded
Turn Assist function timeout
Turn Assist time limit reached
Turn Assist timeout exceeded

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

Error codes

Code	Meaning	Trigger	Severity
`100`	Excessive pressure was sensed in an air cell that is not intended to be filling	Over-pressure detected in incorrect cell during operation	error
`100`	Overpressure reading - excessive pressure in non-target cell	Excessive pressure detected in air cell that should not be inflating	warning
`101`	12V Power Failure	12-volt power supply voltage drops below 10 volts	critical
`101`	12V power failure - 12V supply below 10 volts	12-volt supply voltage drops below 10V threshold	critical
`103`	Memory corruption detected - controller memory error	Controller detects corrupted memory during operation or startup	error
`104-0`	Sensor select solenoid valve error - compressor at 100% filling rotation cell	Compressor runs continuously at 100% while filling rotation cell, or rotation rate parameters changed without stopping therapy first	error
`104-1`	Sensor Select Solenoid Valve - No Pressure Difference	System detects no pressure difference between two rotation circuits; both rotation cells inflating simultaneously	error
`104-1`	Sensor select solenoid valve error - both rotation cells inflating simultaneously	System detects no pressure difference between two rotation circuits; both cells inflate at same time	warning
`134`	Reset occurred - system powered down and restarted	System underwent power down and restart cycle	info
`134`	Reset Occurred	System lost power and performed restart	info
`136`	Main circuit rotation cell leak during diagnostic test	Leak detected during diagnostic test on main rotation circuit	error
`136`	MAIN_LEAK	Diagnostic test detected leak in rotation bladder circuit	error
`136`	Main leak diagnostic test result - main leak circuit diagnostic	Rotation chamber leak diagnostic test conducted	warning
`137`	Left rotation cell circuit leak during diagnostic test	Leak detected during diagnostic test on left rotation circuit	error
`137`	LEFT_SURFACE_LEAK	Diagnostic test detected leak in rotation bladder circuit	error
`137`	Left surface leak diagnostic test result - left rotation cell leak detected	Left surface chamber leak diagnostic test conducted	warning
`138`	RIGHT_SURFACE_LEAK	Diagnostic test detected leak in rotation bladder circuit	error
`138`	Right surface leak diagnostic test result - right rotation cell leak detected	Right surface chamber leak diagnostic test conducted	warning
`138`	Right rotation cell circuit leak during diagnostic test	Leak detected during diagnostic test on right rotation circuit	error
`139`	Left percussion cell circuit leak during diagnostic test	Leak detected during diagnostic test on left percussion circuit	error
`139`	Left percussion leak diagnostic test result - left percussion cell leak detected	Left percussion chamber leak diagnostic test conducted	warning
`140`	Right percussion cell circuit leak during diagnostic test	Leak detected during diagnostic test on right percussion circuit	error
`140`	Right percussion leak diagnostic test result - right percussion cell leak detected	Right percussion chamber leak diagnostic test conducted	warning
`146`	INVALID_COMMAND	Mattress control received an unrecognized or invalid command	error
`146`	An invalid command has been received by the support surface controller	Controller receives malformed or unrecognized command	warning
`65`	Pendant_Disconnected: No heartbeat between touch screen and head end controller of control cabinet. Head end gives beep during disconnection.	Loss of communication between pendant and head end controller	error
`66`	CPR_Left: The left resuscitation stop is not detected.	Left CPR button pressed or system checks for left CPR button presence during startup or operation	warning
`67`	CPR_Right: The right resuscitation stop is not detected.	Right CPR button pressed or system checks for right CPR button presence during startup or operation	warning
`68`	Both CPR plugs not detected by system	Neither left nor right CPR emergency plugs detected after initial check	warning
`68`	CPR_Both: None of the resuscitation stops are detected.	Neither left nor right CPR button is detected during operation or startup	warning
`69`	FootEndLow: Abnormal temperature in the foot end control unit. Temperature between 48.8 and 60 degrees C.	Foot end controller temperature sensor reading between 48.8 and 60°C during operation	info
`69`	Abnormal temperature in foot end assembly	Foot end enclosure temperature between 48.8–60 °C during operation	info
`70`	Foot end enclosure overheat condition; automatic power shutdown triggered	Foot end temperature exceeds 60 °C	critical
`70`	FootEndHigh: Overtemperature in the foot end control unit. Temperature > 60 degrees C. Shows message 'Auto. Overload Caused a Power Shutdown'.	Foot end controller temperature exceeds 60°C	critical
`70`	Foot-end overheating	Temperature in foot-end box exceeds 60°C	critical
`71`	HeadEndLow: Abnormal temperature in the head end control unit. Temperature between 48.8 and 60 degrees C.	Head end controller temperature sensor reading between 48.8 and 60°C during operation	info
`71`	Abnormal temperature in head end assembly	Head end enclosure temperature between 48.8–60 °C during operation	info
`72`	Head-end overheating	Temperature in head-end box exceeds 60°C	critical
`72`	Head end enclosure overheat condition; automatic power shutdown triggered	Head end temperature exceeds 60 °C	critical
`72`	HeadEndHigh: Overtemperature in the head end control unit. Temperature > 60 degrees C. Shows message 'Auto. Overload Caused a Power Shutdown'.	Head end controller temperature exceeds 60°C	critical
`73`	Turn Assist time limit exceeded	Operator selected Turn Assist function but did not return to therapy mode within time limit	warning
`73`	Turn Assist nursing function operation exceeded time limit	Turn Assist function remained active beyond allowed time without operator returning to therapy mode	warning
`74`	Max Inflate nursing function operation exceeded time limit	Max Inflate function remained active beyond allowed time without operator returning to therapy mode	warning
`74`	Max Inflate time limit exceeded	Operator selected Max Inflate function but did not return to therapy mode within time limit	warning
`75`	HugePressureLeak: The setpoint for pressure is not reached within 10 minutes. 'Preparing Surface' screen may not be completed. Message 'Service Required by Qualified Service Personnel' is displayed.	Support surface unable to reach target pressure within 10 minutes of inflation start	error
`75`	Large pressure leak detected; support surface cannot reach setpoint within 10 minutes	Inflation cycle unable to achieve target pressure setpoint within 10-minute window	critical
`76`	LowPressureLeak: The compressor has restarted 20 times with less than 20 seconds between each restart.	Chronic low-level air leak detected by repeated compressor cycling	warning
`76`	Small pressure leak or compressor cycling; low-pressure leak event logged	Compressor restarted 20 or more times within 20-second intervals	info
`76`	Compressor frequent restart detected (low pressure leak)	Compressor restarted 20 times with less than 20 seconds between restarts	warning
`77`	Stepper motor Find Home failure; rotary valve unable to home to starting position	Stepper motor unable to locate Find Home position within specified number of steps during initialization or operation	error
`77`	Stepper motor path return failure	Stepper motor does not complete return path within specified step count during startup	error
`77`	Stepper_Alarm: The stepper motor could not find 'Home' in the specified number of steps.	Stepper motor/rotary valve unable to locate home position during startup sequence	error
`77`	Stepper motor home position search failed within specified step count	Stepper motor unable to locate optical sensor flag within expected number of revolutions	error
`81`	Percussion motor speed alarm - motor not functioning	Motor fails to operate during percussion therapy activation	error
`85`	Headend elevation alarm - head of bed at 60 degrees or greater	Rotation therapy selected with headend elevated more than 60 degrees	warning
`91`	Main pressure leak detected	Percussion cells fail to pressurize to set point within 10 seconds	error
`91`	Main pressure leak - percussion cells fail to reach setpoint within 10 seconds	Percussion cells do not inflate to pressure setpoint within 10-second window during therapy start	error
`92`	Production test leak detected	During diagnostic test, cell fails to reach 50 mmHg within 3 minutes	error
`92`	Production test leak - diagnostic cells fail to reach 50 mmHg within 3 minutes	Cells do not reach 50 mmHg pressure during production leak diagnostic test on service display	warning
`95`	Stepper Over Current	Stepper motor control circuit detects excessive current	error
`95`	An over-current has been detected on the stepper motor drive circuit	Stepper motor drive circuit over-current condition detected	error
`96`	An over-current has been detected in one of the solenoid valves	Solenoid valve drive circuit over-current condition detected	error
`96`	Solenoid valve overcurrent - overcurrent in solenoid circuit	Overcurrent detected in one of the solenoid valve circuits	error
`97`	Perc Over Current Alarm	Percussion motor control circuit detects excessive current	error
`97`	Percussion motor overcurrent - overcurrent in percussion motor circuit	Overcurrent detected in percussion motor drive circuit	error
`98`	Footend temperature service required - multiple high temperature events in 24 hours	Two or more code 70 (footend high temperature) alarms within 24-hour period	warning
`98`	Foot Over Temp Service	Two or more alarm code 70 (FootEndHigh) events within 24 hours	error
`98`	Two or more FootEndHigh alarm code 70 occurred within 24 hours	Multiple over-temperature alarms at foot end within 24-hour period	warning
`99`	Headend temperature service required - multiple high temperature events in 24 hours	Two or more code 72 (headend high temperature) alarms within 24-hour period	warning
`99`	Two or more high temperature alarms at head end within 24 hours	Code 72 alarm occurred twice or more in 24 hour period	warning
`99`	Head Over Temp Service	Two or more alarm code 72 (HeadEndHigh) events within 24 hours	error

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.