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SBUS Class A supervision losttrouble

Silent Knight SK-6820: SBUS Class A supervision lost

Silent Knight SK-6820·1 view·0 field notes

What This Code Means

The panel has lost the return path for a Class A SBUS circuit.

Common Causes

  • 1Break in the SBUS wiring
  • 2Loose connection at the last device

Resolution Steps

Trace the SBUS wiring to find the break, check connections at all SBUS devices, and restore the loop continuity.

Manual References(3)

Field Notes

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Related Codes

Water flow switch alarmA water flow switch has been activated, indicating water movement in the sprinkler system.An unexpected SLC device has been IDThe panel has detected a device on the SLC loop that was not programmed into the system.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).AC Power Loss- PanelThe control panel has lost primary AC power.SLC Loop ShortedA short circuit condition has been detected on the Signaling Line Circuit.

Related Questions

How do I expand the SK-5207 from 8 zones to 16 zones using the 5210 Zone Expander?What are the key differences between the SK-5207 and its predecessor the SK-5104?How do I program zone assignments and custom zone labels on the Silent Knight 6820?
All SK-6820 trouble codesSK-6820 panel page