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Kidde FX-5

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What This Code Means

An Initiating Device Circuit (IDC) is in a trouble state, typically due to a wiring fault.

Common Causes

  • 1Open circuit (broken wire)
  • 2Missing End-of-Line (EOL) resistor
  • 3Detector head removed from base

Resolution Steps

Check the IDC wiring for continuity. Ensure the correct EOL resistor is installed at the end of the circuit. Verify all smoke detector heads are properly locked into their bases.

Manual References(2)

Field Notes

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Related Codes

Charger TroubleThe panel detected a fault in the battery charging circuit.AUX Power TroubThe panel detected a trouble condition in the auxiliary power circuit.Battery BadThe standby battery has failed a load test and is no longer reliable.DACT Configuration TRBLThe F-DACT1(F) dialer is either not programmed or contains unverified configuration changes.AC FailureThe control panel has lost primary AC power.

Related Questions

Why does my FX-5 show a NAC circuit trouble even though all appliances are wired and the EOL resistor is installed?How do I clear a ground fault trouble on the Kidde FX-5 when the Ground Fault LED stays lit?What battery size fits inside the FX-5 cabinet, and what is the maximum Ah rating the charger can support?
All FX-5 trouble codesFX-5 panel page