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Unexpected SLC device removed
trouble

Silent Knight 5820XL

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What This Code Means

A programmed SLC device is no longer communicating with the panel.

Common Causes

  • 1Device physically removed
  • 2Wiring break to the device
  • 3Device hardware failure

Resolution Steps

Reinstall the device or check wiring continuity to the device location. Replace the device if it has failed.

Manual References(4)

Field Notes

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Related Codes

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

Related Questions

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All 5820XL trouble codes5820XL panel page