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Detector trouble
trouble

Silent Knight 5820XL

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What This Code Means

A smoke or heat detector is reporting a fault condition to the panel.

Common Causes

  • 1Dirty detector head
  • 2Internal device failure
  • 3Communication error

Resolution Steps

Clean the detector head with compressed air or a vacuum. If the trouble persists, replace the detector.

Manual References(4)

Field Notes

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Related Codes

Water flow switch troubleA fault has been detected in the wiring or switch of a water flow initiation circuit.System Power (Flashes)The panel has lost primary AC power and is running on battery backup.BATTERY LOWThe system has detected that the standby battery voltage is below the acceptable threshold, indicating the batteries are depleted or failing to hold a charge.Battery voltage lowThe system has detected that the battery voltage is below the required threshold for reliable operation, typically less than 85% of its rating.GROUND FAULTAn earth ground fault occurs when the panel senses an unexpected flow of current from one or more of its terminals to the earth connection (Terminal 2).

Related Questions

What does 'KEY BUS TROUBLE' mean on the 5820XL and how do I resolve it?What is the difference between SK protocol and SD protocol on the 5820XL, and can they be mixed?How do I perform a walk test on the Silent Knight 5820XL?
All 5820XL trouble codes5820XL panel page