HVACopediaAllied furnace error codes
11 codes (10 faults, 1 normal display and menu code).
| Code | Meaning | Severity / type |
|---|---|---|
| 1 flash | Flame sensed with gas valve off | Critical |
| 2 flashes | Pressure switch closed with inducer off | Medium |
| 3 flashes | Pressure switch open with inducer on | High |
| 4 flashes | High limit switch open | High |
| 5 flashes | Rollout switch open | Critical |
| 6 flashes | Pressure switch cycle lockout | High |
| 7 flashes | Lockout - no ignition | High |
| 8 flashes | Lockout - too many flame dropouts | High |
| 9 flashes | Incorrect line voltage phasing | High |
| LED off | No power to control or control hardware fault | High |
| LED on | Normal operation | Normal status |
Models covered
92G1UH92G1UH0450892G1UH0451292G1UH0700892G1UH0701292G1UH0901292G1UH0901692G1UH1101692G1UH1102092G1UH1352095G1UHA93UHA93UH1DA95UHA95UH1D
For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.