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 |