CAIRE eQuinox PAOS 4000, Provider Technical Manual

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Personal Ambulatory Oxygen System
Provider Technical Manual
20771733 D 23
Malfunction Codes
If a malfunction occurs in the eQuinox, the device will stop, the Red LED on the front panel will light and the buzzer will sound for 10 seconds
and then silence. The LCD will display one of the following Malfunction Codes:
Malfunction FAIL code Recommended Action
Invalid RESET FAIL 80 Check for secure communication cables, Verify functionality of PM and CS PCB
I/O Port Failure FAIL 81 Check for secure communication cables, Verify functionality of PM and CS PCB
RAM Failure FAIL 82 Check for secure communication cables, Verify functionality of PM and CS PCB
FLASH Failure FAIL 83 Check for secure communication cables, Verify functionality of PM and CS PCB
EEPROM Failure FAIL 84 Check for secure communication cables, Verify functionality of CS PCB
IPC Watchdog Timeout FAIL 90 Check for secure communication cables, Verify functionality of PM and CS PCB
Compressor Motor Temperature Sensor Failure FAIL 91
Allow eQuinox to Cool for 30 Minutes. Check compressor fan functionality. Check to ensure vents are not
obstructed. Verify functionality of the Compressor Assy. Check cable connections between the compressor
and the PM PCB
PCB Temperature Sensor Failure FAIL 92
Allow eQuinox to cool for 30 Minutes. Verify functionality of PM fan. Check to ensure vents are not
obstructed. Verify functionality of PM PCB
No Power to Compressor FAIL 93
Check Compressor wires for damage. Verify functionality of PM PCB. Verify functionality of the Compressor
Assy
Compressor Motor Stalled FAIL 94
Check Compressor wires for damage. Verify functionality of PM PCB. Verify functionality of the Compressor
Assy
Battery Communication Failure FAIL 95
Verify functionality of the Battery Bridge PCB. Check Battery and Battery Bridge PCB for pin damage. Verify
functionality of battery. Verify functionality of PM PCB
PSS failure FAIL 96 Power Failure
Boost Converter Failure FAIL 97 Verify Functionality of PM PCB
Compressor motor too hot FAIL 9A
Allow eQuinox to Cool for 30 Minutes. Check compressor fan functionality. Check to ensure vents are not
obstructed. Verify functionality of the Compressor Assy.
PCB too hot FAIL 9B
Allow eQuinox to Cool for 30 Minutes. Check compressor fan functionality. Check to ensure vents are not
obstructed.
IPC Failure FAIL A0 Verify functionality of PM PCB
Breath Pressure Sensor Failure FAIL A2 Verify functionality of CS PCB
Ultrasonic Failure FAIL A3 Verify functionality of CS PCB. Check for water intrusion from humidifier
Product Temperature Sensor Failure FAIL A4 Verify functionality of DB9 cable harness. Verify functionality of CS PCB
Loss of Product Tank Pressure FAIL A5 Check for leaking, cracked HEPA filter or damaged tubing. Verify ATF motor is turning
Purity Calibration Data Failure FAIL A6 Check for leaking, cracked HEPA filter or damaged tubing. Verify functionality of CS PCB
Flow Calibration Data Failure FAIL A7 Verify functionality of Proportional Valve. Verify functionality of CS PCB
Breath Sensitivity Data Failure FAIL A8 Check for damaged tubing. Verify functionality of CS PCB
Over Current Failure FAIL AB Check power supply for sufficient current
Table 10
Step 1: Remove all power sources; battery and external power. Wait 20 seconds. Reconnect power to the eQuinox. Turn the device to the ON
position. If resolved, continue use.
Step 2: If unresolved, call Technical Support for assistance.