All Error Codes
High Medium Low
| Code | Description | Severity | Quick Action |
|---|---|---|---|
| 2 | System Lockout | Medium | Call tech support |
| 3 | Pressure Switch Error | Medium | Call tech support |
| 4 | Open Limit Switch | Medium | Call tech support |
| 5 | Flame Sensed With Gas Off | Medium | Check gas & reset |
| 6 | Polarity/Grounding Error | Medium | Call tech support |
| 7 | Gas Valve Circuit Error | Medium | Call tech support |
| 8 | Low Flame Signal | Medium | Check gas & reset |
| 9 | Igniter Problem | Medium | Call tech support |
| FAST-FLASH | Active Call for Heat | Medium | Call tech support |
| SLOW-FLASH | Normal Operation (Standby) | Medium | Call tech support |
| STEADY-OFF | No Power | Medium | Call tech support |
| STEADY-ON | Control Board Problem | Medium | Call tech support |