All Error Codes
High Medium Low
| Code | Description | Severity | Quick Action |
|---|---|---|---|
| 11 | No Ignition | High | Shut down & call tech |
| 12 | Flame Failure | High | Shut down & call tech |
| 13 | Improper Combustion | High | Shut down & call tech |
| 14 | Overheat / Thermal Fuse | High | Turn off & wait 30min |
| 51 | Gas Valve Fault | High | Check gas supply |
| 99 | Vent Blockage | High | Shut down & call tech |
| 15 | Inlet Temp Sensor Fault | Medium | Call tech support |
| 16 | Outlet Temp Sensor Fault | Medium | Call tech support |
| 21 | Air Supply / Operational Switch | Medium | Call tech support |
| 24 | Flow Sensor Malfunction | Medium | Call tech support |
| 29 | Condensate Neutralizer Issue | Medium | Call tech support |
| 31 | Inlet Water Filter | Medium | Clean air filter |
| 33 | Fan Motor Fault | Medium | Clean air filter |
| 61 | Blower Motor Failure | Medium | Call tech support |
| 76 | Communication Fault | Medium | Check wiring |