Issue
The panel displays a Process Watchdog Operated condition. This is accompanied by General Trouble.
Product Line
ESMI Fire Detection.
Environment
- FFSULH1001.
- FFSULH1002.
- FFSULH1003.
Warning
Electrostatic Discharge Required: Always discharge static electricity from your person by touching metal prior to handling any hardware. Failure to do so may result in damage to devices.
Cause
The system has reported a watchdog trouble due to a malfunction in the main processor unit located on the LCD backboard. During this condition, the Watchdog LED will illuminate.
Resolution
- Locate the LCD backboard: On the back side of the LCD board, find the reset switch (red-circled area in the reference photo).
- Reset the watchdog condition: Press and release the reset switch to reset the watchdog condition.
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Observe system behavior:
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If the system recovers to normal operation, no further action is needed.
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If the watchdog trouble persists, proceed to replace the LCD main processor board.
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