AC Failure: FX-5 Trouble Code | Fire Alarm Resource Center
AC Failure
trouble
Kidde FX-5
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What This Code Means
The control panel has lost primary AC power.
Common Causes
1Tripped building circuit breaker
2Blown AC fuse in the panel terminal block
3Local utility power outage
Resolution Steps
Verify the building circuit breaker is ON. Check the 5A fuse located in the AC terminal block inside the panel. Measure the AC input voltage at the panel terminals.
