Brand: Allied Air Enterprises
Category: Air Conditioner
Document Type:
Language: EN
Manual for A96UH1E - Troubleshooting and error codes + PDF Download
Uploaded: March 30, 2025, 4:26 p.m.
Warranty Summary
Warranty information is not found in this installation manual.
Heating Sequence of Operation:
- Thermostat calls for heat, combustion air inducer starts.
- Combustion air pressure switch proves blower operation.
- After a 15 second pre-purge, the hot surface ignitor energizes.
- After a 20 second ignitor warm-up period, the gas valve solenoid opens.
- Gas is ignited, flame sensor proves the flame, and combustion continues.
- If flame is not detected after the first trial, the ignition control will repeat steps and then lockout.
Troubleshooting and error codes
| Red LED Flash Code2 | Diagnostic Codes / Status of Furnace |
|---|---|
| Off | No power to control or control hardware fault detected |
| Heartbeat¹ | Normal operation - idle, continuous fan, cool |
| Continuous Rapid Flash | Call for heat / burner operation |
| 1 Flash | Reverse line voltage polarity |
| 2 Flashes | Improper earth ground |
| 3 Flashes | Burner failed to light, or lost flame during heat demand |
| 4 Flashes | Low flame signal - check flame sensor |
| 5 Flashes | Watchguard - burner failed to light, exceeded maximum number of retries or recycles |
| 6 Flashes | Not used |
| 7 Flashes | Primary or Secondary limit open or watchguard mode - limit switch open longer than 3 minutes |
| 8 Flashes | Rollout switch open |
| 9 Flashes | Pressure switch failed to close or opened during heat demand |
| 10 Flashes | Watchguard - Pressure switch opened 5 times during one heat demand |
| 11 Flashes | Pressure switch stuck closed prior to activation of combustion air inducer |
| 12 Flashes | Flame sensed without gas valve energized |
| 13 Flashes | Low line voltage |