Defibrillators

Philips HeartStart MRx: troubleshooting and error codes

The ServiceForge knowledge base holds 143 documented symptoms for the Philips HeartStart MRx, with 263 ranked causes, 153 diagnostic checks with test points and expected values, and 52 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

Status log messages indicate component failures patient safety

Device logs INOP messages and communications failures for various modules including NBP, SpO2, ECG, Processor, Fan, Printer, and Therapy components

Ranked causes

1. Bluetooth card malfunction (occasional)
2. Charge button mechanical failure (occasional)
3. CO2 module equipment malfunction (occasional)
4. Communication error with modules (common)
5. CPR sensor communication or selftest failure (occasional)
6. ECG equipment malfunction (occasional)
7. ECG cable failure (occasional)
8. Fan assembly failure (occasional)
9. NBP module selftest or communication failure (occasional)
10. Shock or charge button failure (occasional)

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

Won't charge in manual defib mode high voltage

Device cannot charge when charge button pressed on paddles or device in manual defibrillation mode

Ranked causes

1. Paddles not connected properly (common)
2. Paddles defective (common)
3. Internal connection problem (occasional)
4. Therapy port defective (occasional)
5. Therapy PCA defective (occasional)
6. Processor PCA failure (rare)

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

CO2 measurement not displayed patient safety

'Failure to display CO2 measurement' or no CO2 value shown.

Ranked causes

1. FilterLine issue or internal connection failure (common)
2. Internal CO2 tubing broken or disconnected (occasional)
3. CO2 module failure (occasional)
4. Processor PCA failure (rare)
5. Therapy PCA failure (rare)

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

Distorted or buzzing audio

Audio output is distorted or produces buzzing/grinding noise

Ranked causes

1. Damaged speaker cover or label (common)
2. Debris between speaker and label (common)
3. Speaker hardware loose (occasional)
4. Speaker damage or failure (occasional)
5. Processor PCA failure (rare)

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

No transmission device detected

Status log shows 'No Transmission Device Detected' when device is not responding or unreachable

Ranked causes

1. Bluetooth device not turned on (common)
2. Bluetooth device out of range (common)
3. Bluetooth device not authorized to pair (occasional)
4. Bluetooth pairing information lost (occasional)
5. Bluetooth card is corrupt (rare)

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

No transmission devices detected via RS-232

Status log shows 'No Transmission Devices Detected' message during RS-232 setup

Ranked causes

1. Cell phone not connected properly to serial cable/RS-232 port (common)
2. Cell phone RS-232 port not configured correctly (occasional)
3. Cell phone RS-232 hardware incompatible (occasional)
4. Serial cable is defective or incompatible (occasional)
5. Cell phone not set up properly as modem (occasional)

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

Poor ECG signal quality - monitoring electrodes patient safety

Noisy trace, wandering baseline, or other poor signal quality from ECG monitoring electrodes.

Ranked causes

1. Poor skin preparation or electrode contact (common)
2. Bad ECG cable or leads (common)
3. Radio frequency interference (RFI) (occasional)
4. Problem with measurement module panel (occasional)
5. Problem with Processor PCA (occasional)

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

Transmission failed – connection failed or interrupted

Status log shows 'Transmission Failed. Connection Failed' or 'Connection Interrupted' message

Ranked causes

1. Wrong Bluetooth Profile selected (common)
2. Network down or cellular signal insufficient (common)
3. Bluetooth device out of range (common)
4. Incorrect dial string in Phone Profile settings (occasional)
5. Data transfer service unavailable on phone (occasional)

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

Won't discharge shock in manual defib mode high voltage

Device cannot deliver shock when shock button pressed on paddles or device in manual mode

Ranked causes

1. Faulty paddles (common)
2. Internal connection problem (occasional)
3. Therapy port defective (occasional)
4. Therapy PCA defective (occasional)
5. Processor PCA failure (rare)

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

'Leads Off' message - ECG lead open circuit patient safety

'Leads Off' error displayed even though ECG cable and leads replaced and properly connected, indicating open circuit in leads wiring.

Ranked causes

1. Poor skin preparation or electrode contact (common)
2. Bad ECG cable or leads (common)
3. Problem with measurement module panel (occasional)
4. Problem with Processor PCA (occasional)

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

CO2 reading inaccurate

CO2 measurement readings are incorrect or unreliable

Ranked causes

1. FilterLine blocked or damaged (common)
2. CO2 module needs calibration (common)
3. CO2 module failure (occasional)
4. Internal tubing connection problem (occasional)

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

CPR sensor unplugged patient safety

Compression sensor or cables not properly connected, sensor not detected

Ranked causes

1. Compression sensor unplugged (common)
2. Pads/CPR cable not connected to therapy port (common)
3. Pads/CPR cable faulty (occasional)
4. Compression sensor faulty (occasional)

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

Display completely dim or dark

Display screen completely dim, unresponsive, all light or all dark; no display output

Ranked causes

1. Backlight failure (common)
2. Display failure (common)
3. Power supply failure (occasional)
4. Processor PCA failure (occasional)

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

Faint or absent printing

Paper advances but printing is faint, absent, or poor quality

Ranked causes

1. Door improperly latched (common)
2. Dirty printhead (common)
3. Operating temperature out of range (occasional)
4. Printer failure (occasional)

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

No Bluetooth devices detected

Status log shows 'No Bluetooth Devices Detected' when HeartStart MRx cannot discover Bluetooth device

Ranked causes

1. Bluetooth device turned off (common)
2. Bluetooth device out of range (common)
3. Bluetooth device not authorized to pair (occasional)
4. Bluetooth card is corrupt (rare)

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

No Data Card Present message

System displays message indicating no data card is detected even when card is inserted

Ranked causes

1. Insufficient time allowed for data card recognition (common)
2. Data card failure (occasional)
3. Data card not seated properly due to bent pins (occasional)
4. Processor PCA failure (occasional)

First check

Verify data card is fully inserted

Test point: Data card slot
Expected: Card fully seated in slot

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

No network connectivity icon present

Network connectivity icon is missing from clinical views, indicating broken network connection

Ranked causes

1. Physical wired connection broken (common)
2. Physical wireless connection broken (common)
3. IntelliVue Network option not enabled (occasional)
4. Network settings or configuration incorrect (occasional)

First check

Physical wired and wireless connections

Test point: Physical connectors
Expected: Properly seated and secured

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

Poor ECG signal quality - paddles/pads patient safety

Noisy trace, wandering baseline, or other poor signal quality from therapy paddles or pads.

Ranked causes

1. Poor skin preparation or pads/paddles contact (common)
2. Radio frequency interference (RFI) (occasional)
3. Problem with internal cables (occasional)
4. Problem with Therapy port (occasional)

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

Radio Unplugged INOP

Radio Unplugged or Check Device message displayed, indicating loose or disconnected radio/AC module or RS-232 cable

Ranked causes

1. Loose RS-232 connection (common)
2. Loose radio/AC module connection (common)
3. Damaged RS-232 cable (occasional)
4. Faulty RS-232 transceiver (rare)

First check

RS-232 cable connection tightness

Test point: RS-232 screwlocks at connection
Expected: Screwlocks tight, cable fully seated

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

Won't charge using device charge button high voltage

Device won't charge when charge button on HeartStart MRx pressed in manual mode

Ranked causes

1. Therapy cable issue (common)
2. Front panel button failure (occasional)
3. Therapy PCA defective (occasional)
4. Processor PCA failure (rare)

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

'Pads Off' message - therapy port open circuit patient safety

'Pads Off' error displayed even though pads cable replaced and properly connected, indicating open circuit in therapy port wiring.

Ranked causes

1. Cable connection fault from Therapy port to Therapy PCA (common)
2. Defective Therapy port or cable to Power PCA (occasional)
3. Defective Power PCA (occasional)

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

Bluetooth connection lost during transmission

Status log shows 'Bluetooth Connection Lost' message during 12-Lead and Event Summary transmission or testing

Ranked causes

1. Network is down (occasional)
2. Bluetooth device out of range (common)
3. Bluetooth connection not established (unknown)

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

Bluetooth device pairing failed

Status log shows 'Bluetooth Device Pairing Failed' when attempting to pair device with HeartStart MRx

Ranked causes

1. Wrong pass key entered on Bluetooth device (common)
2. Pairing process timed out (occasional)
3. Bluetooth card is corrupt (rare)

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

CO2 exhaust tube blocked

CO2 exhaust tube or outlet port blocked, preventing measurement sample collection

Ranked causes

1. FilterLine problem (common)
2. Exhaust tubing kinked or blocked (common)
3. Internal tubing or CO2 module failure (occasional)

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

Device disarms during shock high voltage

Device charges OK but disarms when shock button pressed or spontaneously without button press

Ranked causes

1. Pads or paddles losing contact or defective (common)
2. Therapy PCA defective (occasional)
3. Processor PCA failure (occasional)

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

Invalid password during transmission

Status log shows 'Invalid Password' message with user/pw failure sub-codes for 12LXmit Network or Server

Ranked causes

1. Wrong Bluetooth Profile selected (common)
2. Incorrect PPP User Name or Password in Phone settings (common)
3. Server User Name or Password is incorrect (common)

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

No Central Monitoring INOP or no network connectivity icon patient safety

No Central Monitoring message displayed or network icon missing, indicating no connection to IntelliVue Central Station

Ranked causes

1. No network connection - general (common)
2. No network connection - wired only (occasional)
3. No network connection - wireless only (occasional)

First check

Equipment Label configuration

Test point: Main screen display or Device Info
Expected: Equipment Label present, unique, not blank

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

No CO2 waveform

CO2 module does not start when FilterLine connected or no CO2 waveform displayed

Ranked causes

1. FilterLine damaged (common)
2. Intake receptacle failure (occasional)
3. CO2 module or sensor failure (occasional)

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

Paper not moving through printer

Printer paper does not advance through printer mechanism

Ranked causes

1. Paper improperly loaded or jammed (common)
2. Paper is wet (common)
3. Printer failure (occasional)

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

Radio Malfunction INOP patient safety

Radio Malfunction or Check Device message displayed, indicating radio/AC module or Therapy PCA failure

Ranked causes

1. Radio/AC module malfunction (common)
2. Therapy PCA malfunction (occasional)
3. Incompatible Therapy PCA hardware version (rare)

First check

Radio/AC module physical connection

Test point: Battery compartment B
Expected: Module seated with audible click

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

SpO2 no response - no value displayed patient safety

No SpO2 value on screen, no pleth bar, no numeric reading.

Ranked causes

1. Bad SpO2 sensor (common)
2. Bad internal connection (occasional)
3. SpO2 PCA failure (occasional)

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

Transmission failed – no dial tone

Status log shows 'Transmission Failed. No dial tone' message

Ranked causes

1. Cell phone service unavailable or signal insufficient (common)
2. Bluetooth modem connection not secure (occasional)
3. Connection does not provide dial tones (occasional)

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

Bluetooth disconnect failed

Status log shows 'Disconnect Failed' for Bluetooth FTP Device after transmission

Ranked causes

1. Bluetooth device stack incompatibility (occasional)
2. Bluetooth device moved out of range after transmission (occasional)

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

Calibration: CO2 module accuracy patient safety

CO2 measurement readings do not fall within acceptable tolerance when exposed to calibration gas

Ranked causes

1. CO2 measurement module requires calibration (common)
2. CO2 measurement module defective after recalibration failure (occasional)

First check

Warm up monitor with FilterLine connected

Test point: CO2 Inlet port
Expected: Operating for at least 20 minutes with FilterLine connected

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

Calibration: CO2 module flow rate

Test and adjust flow rate to 50±7.5 ml/min; calibrate if out of tolerance

Ranked causes

1. Flow rate out of tolerance (not 50±7.5 ml/min) (occasional)
2. Flow rate cannot be adjusted to tolerance; defective CO2 module (rare)

First check

Disconnect tubing from flowmeter inlet

Test point: flowmeter inlet connection
Expected: tubing disconnected

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

CO2 module flow rate outside tolerance patient safety

Gas flow rate does not meet 50 ± 7.5 ml/min specification

Ranked causes

1. Flow rate requires adjustment or tubing obstruction (common)
2. CO2 module defective (rare)

First check

Measure CO2 flow rate

Test point: Flowmeter connected to FilterLine outlet
Expected: Flow rate 50 ± 7.5 ml/min, ±7.5 ml/min
Tools: Flowmeter

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

Control buttons not responding

Front panel buttons (Print, Sync, Charge, Shock, softkeys) not responding or responding incorrectly

Ranked causes

1. Processor PCA failure (common)
2. Display assembly failure (occasional)

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

Controls do not respond to key presses patient safety

One or more controls (e.g., select lead, softkeys) do not respond to user input. Keypress not detected or processed.

Ranked causes

1. Bad connection between keys and detection circuits (common)
2. Failure in keys (occasional)

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

CPR sensor malfunction patient safety

Compression sensor power-on self-test failed, sensor not functioning

Ranked causes

1. Hardware version not at level B2 (common)
2. Compression sensor defective (occasional)

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

Display half dim or uneven brightness

Left or right half of display is dim or display brightness is not uniform

Ranked causes

1. Backlight cable disconnected (common)
2. Backlight bulb failure (occasional)

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

Invalid password during RS-232 transmission

Status log shows 'Invalid Password' message during RS-232 12-Lead transmission setup

Ranked causes

1. Incorrect PPP User Name or Password in Serial Profile Phone settings (common)
2. Server User Name or Password is incorrect (common)

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

NBP reading inaccurate patient safety

Blood pressure measurement values are inaccurate or incorrect.

Ranked causes

1. NBP module needs calibration (common)
2. NBP module failure (occasional)

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

No audio output

No audio or sound output from device speaker at all

Ranked causes

1. Speaker failure (common)
2. Processor PCA failure (occasional)

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

No dial tone during RS-232 transmission

Status log shows 'No Dial tone' message during RS-232 12-Lead transmission

Ranked causes

1. Cell phone not connected properly to serial cable (common)
2. Cell phone service unavailable (common)

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

Paddle position error during operational check

PCI LEDs light up indicating paddles not properly seated in holders during Operational Check Setup

Ranked causes

1. Paddles not seated properly in holders (common)
2. Paddle electrode surfaces dirty or corroded (occasional)

First check

Verify paddles are secured in pockets

Test point: Paddle holders
Expected: PCI LEDs do not light; paddles firmly seated

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

Shock delivery problem high voltage

Device delivers incorrect energy, no energy, or only partial energy in shock

Ranked causes

1. Therapy PCA defective (common)
2. Processor PCA failure (occasional)

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

SpO2 noisy or intermittent signal patient safety

SpO2 signal is noisy, intermittent, or unreliable.

Ranked causes

1. Bad SpO2 sensor (common)
2. Processor PCA failure (occasional)

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

SpO2 reads wrong value patient safety

SpO2 reading is obviously incorrect or inaccurate.

Ranked causes

1. Bad SpO2 sensor (common)
2. SpO2 PCA failure (occasional)

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

SpO2 sensor disconnected patient safety

'SpO2 unplugged. Turn off SpO2?' message. Sensor is disconnected or not responding.

Ranked causes

1. SpO2 sensor disconnected or faulty (common)
2. Incompatible software after SpO2 repair (rare)

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

Therapy knob not responding

Therapy knob fails to respond during operational check or service mode controls test

Ranked causes

1. Therapy knob not responding (common)
2. Therapy switch defective (occasional)

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

Transmission failed – error configuring device

Status log shows 'Transmission Failed. Error Configuring Transmission Device' message

Ranked causes

1. Wrong Bluetooth Profile selected (common)
2. Incorrect configuration string in Phone Profile settings (occasional)

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

Transmission failed with directory or permission error

Status log shows 'Transmission Failed' with 'Host Directory Failure' for FTP device when directory cannot be found or created

Ranked causes

1. Destination directory missing or cannot be created on Bluetooth device (occasional)
2. User settings in Bluetooth device do not allow transaction (occasional)

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

Transmission failed with timeout or server error

Status log shows 'Transmission Failed' with timeout, request error, or HTTP client error conditions

Ranked causes

1. Network connection timeout or unavailable (occasional)
2. Server configuration or version mismatch (occasional)

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

Audio voice prompt not heard during operational check caution

Operator does not hear expected Shock Delivered or No Shock Delivered announcement after Shock test

Ranked causes

1. Audio system defective or volume too low (occasional)

First check

Listen for voice prompt after Shock test completes

Test point: Device speaker
Expected: Audible announcement of Shock Delivered or No Shock Delivered

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

Battery compartment calibration recommended

Operational Check displays 'Cal Recommended' prompt for Battery Compartment A, indicating battery calibration is required

Ranked causes

1. Battery capacity or calibration drift (common)

First check

Respond to calibration prompt during Operational Check

Test point: Battery Compartment A test result
Expected: Cal Recommended or Pass

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

Battery failure detected during operational check

Fail/BF result indicates low or defective battery

Ranked causes

1. Battery low or defective (common)

First check

Check battery charge level

Test point: Battery compartment
Expected: Battery charged to at least 20%

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

Bluetooth communication failure

Status log shows 'Bluetooth Communication Failure' indicating incompatible or corrupt Bluetooth card

Ranked causes

1. Bluetooth card is incompatible or corrupt (occasional)

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

Bluetooth malfunction reported

Status log shows 'Bluetooth Malfunction' message with 'No/Bad Bluetooth Card' sub-message

Ranked causes

1. Bluetooth card not installed (common)

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

Calibration: CO2 module caution

CO2 calibration procedure using calibration gases, regulator, flowmeter and associated equipment

Ranked causes

1. CO2 module requires calibration verification (common)

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

Calibration: CO2 module 10% accuracy check

Test measurement accuracy with 10% calibration gas; displayed reading must fall within ±7% tolerance of expected value

Ranked causes

1. 10% reading outside ±7% tolerance (occasional)

First check

Disconnect 5% gas and connect 10% calibration gas

Test point: CO2 Inlet port, calibration gas regulator
Expected: 10% gas connected in place of 5%

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

More symptoms

Calibration: CO2 module 5% accuracy check
Calibration: CO2 module ambient pressure
Calibration: CO2 module auto-calibration
Calibration: CO2 module leakage inlet
Calibration: CO2 module leakage outlet
Calibration: CO2 module noise check
Calibration: CO2 module pump strength
Calibration: CO2 module verification
Calibration: Internal Assemblies - Rear Case
Calibration: NBP module
Calibration: Performance Verification after External Repairs
Calibration: Performance Verification after Internal Repairs
Calibration: Performance Verification after Printer Replacement
Calibration: Performance Verification after Top Assembly Repair
Charge button does not respond during operational check
Clock battery replacement needed
CO2 calibration overdue
CO2 equipment malfunction
CO2 inlet tubing leakage detected
CO2 module calibration overdue
CO2 module noise exceeds threshold
CO2 module operating hours exceed service life
CO2 module pump vacuum insufficient
CO2 occlusion - FilterLine blocked
CO2 outlet tubing leakage detected
CO2 overrange - reading exceeds measurement range
CO2 service required
Data Card Full message
Data Card Full message persists after erasing data
Does not copy data to data card
Flat line on ECG display - no waveform, no 'Leads Off' message
Flat line on paddles/pads - no waveform, no 'Pads Off' message
Incompatible Data Card message
Instrument Telemetry Radio shows malfunction
Internal Memory Failure INOP appears every time device is turned on
Internal Memory Failure message with beep
Leads ECG test cable connection issue
Leads ECG test cable disconnection needed
NBP (blood pressure) measurement malfunction
NBP calibration overdue
NBP cuff will not deflate
NBP cycle counter exceeds service limit
NBP measurement failed
NBP module calibration overdue
NBP module calibration status out of range
NBP service required
Network Connection Rejection - Assigned Central is not available
Network Connection Rejection - Central cannot identify this bed
Network Connection Rejection - No Central assigned to this bed
Network Connection Rejection - No Central check software revision
Network Connection Rejection - No Central duplicate monitor label
No Bluetooth devices configured
No Bluetooth profiles configured
No Instrument Telemetry Radio detected
Operational check critical failure
Operational check failed with service or component replacement required
Operational check fails with battery failure
Operational check fails with cable problem
Operational check fails with compression sensor issue
Operational check fails with critical failure
Operational check fails with non-critical failure
Operational check fails with non-therapy component issue
Operational check fails with shock/pacing/ECG prevention issue
Operational check non-critical failure
Operational check passed but battery low
Paddle PCI LEDs continuously lit
Plastic shield and service loop routing in rear case
Press tabs into place during assembly
Printer malfunction
Radio Weak Signal INOP
Ready For Use indicator shows blinking red X with periodic chirp
Ready For Use indicator shows solid red X with periodic chirp
Ready For Use indicator shows solid red X without periodic chirp
Replace front case assembly
Replace front panel buttons
Shock button does not respond during operational check
SpO2 equipment malfunction
SpO2 sensor malfunction
Transmission failed – cannot reach server
Transmission failed – server unknown
Transmission failed – settings configured incorrectly
Transmission settings not configured
Weekly shock test fails to deliver correct energy

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

Error codes

Code	Meaning	Trigger	Severity
`Assigned Central is not available`	Assigned IIC is not functional or powered off	HeartStart MRx cannot connect to configured IIC	error
`Bad URL Format - 12LXmit Server`	Transmission settings configured incorrectly	Invalid server URL	error
`Calibration failed. Check that the pressure applied is corre`	Calibration point entry failed due to incorrect pressure application	Wrong pressure applied when entering calibration point (0 or 250 mmHg)	error
`Central cannot identify this bed`	IIC unable to identify HeartStart MRx due to unexpected errors	Unexpected communication or configuration error	error
`Charge Button Failure`	Charge button not responding correctly	User pressed No Button Response instead of Charge during operational check	error
`Configure Failed - 12LXmit Device`	Error configuring transmission device	Configuration error	error
`Confirm retries exceeded (MRx Aborted Assoc)`	Confirmation timeout retries exceeded during network association	No response to confirmation requests, keeps timing out	warning
`Connect Failed - 12LXmit Dialing`	Connection failed during dialing	Cannot establish connection	error
`Connection Failed`	Network connection rejected by IIC	IIC rejects connection attempt from HeartStart MRx	error
`Critical Failure Detected`	Critical device failure (software version prior to B.05)	Device startup critical failure	critical
`Device Error. Service Required`	Device error requiring service (software version B.05 and greater)	Device startup error	critical
`Device serial number not entered`	Serial number not configured	Device startup - no serial number	warning
`DNS query failure - 12LXmit Server`	Server unknown - DNS resolution failed	DNS timeout or failure	error
`Fail/BF`	Battery failure during Operational Check	Automated Tests detect low battery condition	warning
`Fail/C`	Critical failure during Operational Check	Automated tests detect failure impacting defibrillation, pacing, or ECG acquisition	critical
`Fail/CX`	Cable failure detected	Automated operational check detects cable problem	critical
`Fail/D`	Non-therapy component failure detected	Automated operational check detects component failure not affecting therapy	error
`Fail/DX`	Device problem preventing therapy delivery	Automated operational check detects failure affecting shock, pacing or ECG acquisition	critical
`Fail/NC`	Non-critical failure during Operational Check	Automated tests detect failure not impacting life-saving functionality	warning
`Fail/S`	Compression sensor failure detected	Automated operational check detects compression sensor failure	warning
`HTTP client error - 12L Transmit`	Web server rejected transmission data	12-lead transmission HTTP error	error
`IIC Association Abort received`	IIC sent association abort signal to HeartStart MRx	IIC terminates established connection	warning
`IIC Life Ticks timed out (MRx Aborted Assoc)`	Heartbeat timeout between HeartStart MRx and IIC	No life tick received within timeout period	warning
`Incompatible Printer`	Incorrect printer configuration detected	50mm printer installed but software expects 75mm printer	error
`Internal Memory Failure`	Internal memory card error	Memory card malfunction or corruption	critical
`Modem Connection Lost - 12LXmit Network`	Connection interrupted during transmission	Network connection dropped	error
`NBP Overpressure`	NBP module opens relief valve when cuff pressure exceeds 300 mmHg	Cuff pressure exceeds 300 mmHg	warning
`NBP Safety Timeout`	NBP module times out if pressure remains > 10 mmHg for 3 minutes	Cuff kept pressurized for more than 3 minutes	warning
`No Central assigned to this bed`	No IIC configured to monitor the HeartStart MRx with assigned equipment label	Device attempts network connection with unassigned equipment label	error
`No Central – check software revision`	Software revisions incompatible between HeartStart MRx and IIC	Version mismatch detected during connection attempt	error
`No Central – duplicate monitor label`	Another device with same equipment label already connected to IIC	Second device with duplicate label attempts to connect	error
`No Central Monitoring`	No connection to IntelliVue Central Station or network connectivity icon missing	Network connection is broken or not established	error
`No Data From Bed`	IntelliVue Central Station not receiving data from HeartStart MRx	Network connection failure or radio module malfunction	error
`No Instrument Telemetry Radio detected`	Radio/AC module not detected by Instrument Telemetry service screen	Service screen cannot communicate with radio module	error
`No Transmission Device Detected - Rosetta-Lt`	Rosetta-Lt transmission device not detected	No transmission device found at startup	error
`Operational Check Passed`	All tests completed successfully	All device components pass during Operational Check	info
`Operational Check Passed. Check Battery A (or B)`	Tests pass but battery low	Battery charge low but not below operational threshold	warning
`Pacer Equip Malfunction`	Pacing system failure	Pacing hardware failure detected, incorrect current or measurement	critical
`Partial transmission - 12L Transmit`	12-lead transmission incomplete	Phone disconnected during transmission	warning
`Pass`	All operational checks passed	Automated operational checks complete successfully	info
`Printer Malfunction`	Printer hardware or communication failure	Printer is faulty or communication problem detected	warning
`Radio Malfunction`	Radio/AC module or Therapy PCA hardware failure	Radio module detects hardware failure or communication error	critical
`Radio Unplugged`	Radio/AC module disconnected or RS-232 connection loose	RS-232 cable or radio module connection fails	error
`Radio Weak Signal`	Wireless radio signal strength below acceptable level (no INOP tone)	RSSI value below -84 dBm	warning
`Request Timeout - 12LXmit Server`	12-lead transmission failed due to server connection timeout	Server connection has timed out	error
`Shock Button Failure`	Shock button not responding correctly	User pressed No Button Response instead of Shock during operational check	error
`Shock Equip Malfunction`	Defibrillator shock delivery system failure	Device unable to deliver correct energy or no energy delivered during shock	critical
`Single confirmation from IIC timed out`	Confirmation timeout for single transaction from IIC	No confirmation received in expected time frame	warning
`Transmission Failed - PPP Attach Timeout`	12-lead transmission failed due to network timeout	PPP Attach Timeout on 12LXmit Network	error
`Transmission Failed - Rosetta-Lt`	Rosetta-Lt transmission failed	Transmission error	error
`Transmission Timeout - Rosetta-Lt`	Rosetta-Lt transmission timeout	Transmission timed out	error
`Unreachable - 12LXmit Server`	Cannot reach transmission server	Server unavailable or connection lost	error

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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.