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S8610U Diagnostic Codes / Fault Codes

Article ID: 691
Last updated: 9 Nov, 2021

Honeywell: S8610U

Re: Diagnostic Codes / Fault Codes

# of Flashes Description
Off No Call for Heat
Fast Flash Power-up - Internal Check
Heartbeat Normal Operation - Heating
2 Pilot flame not detected - 5 min retry delay
3 Flame failed during a run cycle
4 Flame sensed with no call for pilot
5 Vent damper fault - failed to open or failed to close
6 Internal control fault
7 Flame rod shorted to ground
8 Low voltage detected
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Article ID: 691
Last updated: 9 Nov, 2021
Revision: 4
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