Burner controls, ignition and flame safeguards
Honeywell S8610U Intermittent Pilot Ignition fault codes
What all 11 Honeywell S8610U Intermittent Pilot Ignition fault codes mean, in plain words, with a risk grade for each. These come from the manufacturer's own manual. The fix for each one is in WERCS Diagnose.
Get the fixes · plans from $49/moUpdated November 4, 2026
| Code | What it means | Risk |
|---|---|---|
| 2 | 2 The pilot flame was not detected during ignition, causing a five minute burner retry delay. | YELLOW |
| 3 | 3 The flame failed during operation, causing the burner to recycle and attempt another ignition sequence. | YELLOW |
| 4 | 4 A flame was sensed out of sequence, forcing the burner system to lock out immediately. | RED |
| 5 | 5 A damper error occurred because it failed to operate correctly, preventing the burner from starting. | YELLOW |
| 6 | 6 An internal error occurred within the control module, causing the burner system to shut down. | YELLOW |
| 7 | 7 The flame rod has shorted to ground, forcing the burner system into a lockout state. | YELLOW |
| 8 | 8 The secondary voltage supply is too low, preventing the burner control from operating the equipment. | YELLOW |
| OFF | OFF There is no demand for heat, which means the burner remains off and the booth will not heat. | GREEN |
| Heartbeat | Heartbeat The normal startup and ignition sequence has begun, allowing the burner to proceed with firing. | GREEN |
| Flash Fast | Flash Fast The control is performing an internal startup evaluation, temporarily delaying the burner from firing. | GREEN |
| 4 Seconds ON then “x” flashes | 4 Seconds ON then “x” flashes The device is in normal run mode, keeping the burner operating while displaying flame current. | GREEN |
Every code comes from the manufacturer's own manual. Subscribers see which manual and page.