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Silent Knight
5820xl
Unexpected Slc Device Detected

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When diagnosing codes, always check the event history log first. Many trouble conditions are intermittent and tied to environmental factors like temperature or moisture.

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Unexpected SLC device detected: 5820XL Trouble Code | Fire Alarm Resource Center

Unexpected SLC device detected

trouble

Silent Knight 5820XL

60 views·0 field notes

What This Code Means

A device is present on the SLC loop that has not been programmed into the system configuration.

Common Causes

1New device added without programming
2Incorrect address set on a new device

Resolution Steps

Program the new device into the system using the panel menu or software, or remove the device if it is not required.

Manual References(4)

1silent knight5820XLInstallation2007Open

2silent knight5820XLInstallation2013p. 206Open

3silent knight5820XLDatasheet2006Open

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.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.System Power (Flashes)The panel has lost primary AC power and is running on battery backup.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).

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