Carrier GRAVINER Mk 6 - 5.2 Fault Diagnostics and Remedies

Nov-21 Page 95 of 132 59812-K001 Rev 10
A list of the fault that are not listed in the Event Log are detailed below.
Fault
Description
Section
Continuous Backup
Alarm
A backup alarm is indicated without a deviation or
average alarm.
5.2.10
Control Panel Reset
The Control Panel is continuously resetting every 2
seconds.
5.2.11
Replace EEPROM
The EEPROM has reached the guaranteed number of
write operations.
5.2.12
5.2 FAULT DIAGNOSTICS AND REMEDIES
5.2.1 Backup Alarm Test Failure
A Backup Alarm Test is performed manually via the Test Menu, see section 3.5, or automatically during
the daily system check at 16:00hrs. If a failure occurs during the test a Backup Alarm Test fault is
indicated, see section 5.1.2
Figure 134 Backup Alarm Fault
An inspection of the engine event log, see section 3.6, will list the event:
Back-Up Test Failed Eng X det Y
5.2.1.1 Single Detector in fault
Having established which detector is in fault it is necessary to establish the cause of the fault using the
following steps.
1. Swap the detector with a known working detector.
2. Reset the Control Panel.
3. Perform a Backup Alarm Test via the Test Menu, see Error! Reference source not found.
If the fault indication remains at the original position return the swapped detectors to the initial
positions go to item 4
If the fault indication moves to the new position of the detector, the detector has failed and
should be replaced.
4. Open the Junction Box lid. For the indicated failed detector position check the connection of the
backup alarm wire (grey wire).
5. Using a wire link connect the backup alarm terminal (grey wire) to the 0v terminal (blue wire) for
the indicated failed detector position.