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Event ID
41
OVER PRESSURE CONDITION Controller processor detected that a high pressure condition (5 cmH
42
OPERATING SYSTEM NOT
RESPONDING TO SOFTWARE
43
INSUFFICIENT VOLTAGE FOR
AUDIBLE ALARM
44
12V REFERENCE OUT OF
RANGE
45
5V REFERENCE OUT OF
RANGE
46
BULK VOLTAGE OUT OF
RANGE
47
-15V REFERENCE OUT OF
RANGE
48
RAILED FLOW SENSOR
49
PRESSURE SENSOR FAILURE Controller processor detected that the limits test on the secondary pressure
REF 1029568 Rev B
Table 5-3: Significant Event Codes (Continued)
Comment / Corrective Action
IPAP or CPAP setting) lasted for greater than 10 seconds.
1. Check for kinked tubes on the Primary pressure sensor.
2. Check for blockages near the Primary pressure sensor in the gas outlet port.
3. Replace the controller PCB.
4. If the problem persists replace the pneumatics subassembly (blower and flow
valve).
5. Retrieve the DRPT and contact technical support.
Controller processor detected that the built in self-test thread is locked.
1. If the problem persists replace the controller PCB.
2. Retrieve the DRPT and contact technical support.
Controller processor detected that the backup alarm buzzer voltage test failed a
limits check for greater than 5 seconds.
1. Enter Diagnostics mode and use the System Test screen to check if the
backup alarm can be turned on and off.
2. Replace the controller PCB.
3. Retrieve the DRPT and contact technical support.
Controller processor detected that the limits test on the 12V reference voltage
signal failed.
1. Replace the controller PCB.
2. Retrieve the DRPT and contact technical support.
Controller processor detected that the limits test on the 5V reference voltage
signal failed.
1. Replace the controller PCB.
2. Retrieve the DRPT and contact technical support.
Controller processor detected that the limits test on the VBULK reference voltage
signal failed.
1. Replace the controller PCB.
2. Retrieve the DRPT and contact technical support.
Controller processor detected that the limits test on the -15V reference voltage
signal failed.
1. Replace the controller PCB.
2. Retrieve the DRPT and contact technical support.
Controller processor detected that the limits test on the Flow sensor signal failed.
1. Replace the controller PCB.
2. If the problem persists replace the pneumatics subassembly (blower and
valve).
3. Retrieve the DRPT and contact technical support.
sensor signal failed.
1. Replace the controller PCB.
2. If the problem persists replace the pneumatics subassembly (blower and
valve).
3. Retrieve the DRPT and contact technical support.
BiPAP Focus Ventilator Service Manual © Respironics, Inc.
Diagnostic Mode and Troubleshooting
Chapter 5
0 above
2
5-21
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