All Error Codes
High Medium Low
| Code | Description | Severity | Quick Action |
|---|---|---|---|
| AF | Low Flame Current | High | Shut down & call tech |
| R1 | Flame Without Call | High | Shut down & call tech |
| R5 | Rollout Switch Open | High | Shut down & call tech |
| R6 | Gas Valve Failure | High | Check gas supply |
| R7 | Ignition Lockout | High | Shut down & call tech |
| R9 | Reversed Polarity | High | Shut down & call tech |
| A4 | Improper Thermostat Wiring | Medium | Call tech support |
| R2 | Pressure Switch Stuck Closed | Medium | Call tech support |
| R3 | Pressure Switch Stuck Open | Medium | Call tech support |
| R4 | High Limit Switch Open | Medium | Call tech support |