Rinnai Error Code Reference — All 34 Codes
Complete Rinnai error code cheat sheet. All 34 fault codes with plain-English explanations and direct links to fix guides.
Use this page when your Rinnai appliance is showing an error or fault code. Start with the exact code, then open the fix guide to find the real cause and the exact OEM part before you order parts or book a repair. Coverage spans washers, dryers, refrigerators, dishwashers, ranges, ovens and more.
Tip: search the exact appliance and code together, for example "Rinnai washer LE" or "Rinnai refrigerator 22E".
| Error Code | What It Means | Guide |
|---|---|---|
| Rinnai CBU Combi Boiler Error Codes | Complete Fault Guide | Fix → |
| Rinnai Code 12 | Flame Failure & Lost Flame Fix | Fix → |
| Rinnai Error Code 07 | Heat Exchanger High Temperature Fix | Fix → |
| Rinnai Error Code 10 | Condensate / Exhaust Blockage / Fan Motor Fault Fix | Fix → |
| Rinnai Error Code 11 | Causes & Fix | Fix → |
| Rinnai Error Code 11 | No Ignition Fix | Fix → |
| Rinnai Error Code 11 No Ignition | Causes & Fix | Fix → |
| Rinnai Error Code 12 | Causes & Fix | Fix → |
| Rinnai Error Code 14 | Causes & Fix | Fix → |
| Rinnai Error Code 16 | Causes & Fix | Fix → |
| Rinnai Error Code 25 | Causes & Fix | Fix → |
| Rinnai Error Code 25 | Causes & Fix | Fix → |
| Rinnai Error Code 29 | System Communication Fault Fix | Fix → |
| Rinnai Error Code 31 | Causes & Fix | Fix → |
| Rinnai Error Code 32 | Causes & Fix | Fix → |
| Rinnai Error Code 33 | Causes & Fix | Fix → |
| Rinnai Error Code 52 | Outlet Water Temperature Sensor Fault | Fix → |
| Rinnai Error Code 61 | Causes & Fix | Fix → |
| Rinnai Error Code 65 | Water Flow Rate Fault | Fix → |
| Rinnai I120CN Tankless Water Heater Error Codes: Complete Guide | Rinnai I120CN tankless water heater error codes and fault diagnostics. Error codes, causes, and technician-level troubleshooting procedures. | Fix → |
| Rinnai LC Error Code | Causes & Fix | Fix → |
| Rinnai RU199iN Water Heater Problems & Error Codes | Code 12 flame failure is the most common fault. Usually caused by gas supply issues, blocked venting, or a dirty flame rod that needs cleaning or replacement. | Fix → |
| Rinnai RUR Series Error Codes | Tankless Water Heater Fault Guide | Fix → |
| Rinnai RUR199iN Problems & Error Codes | Code 11 ignition failure is most common, usually caused by closed gas valve, air in line, or low manifold pressure. Open gas supply first. | Fix → |
| Rinnai Tankless Heat Exchanger Replacement | Signs & How-To | Fix → |
| Rinnai Tankless Water Heater Control Board Replacement Guide | Error codes, no hot water, or random shutdowns mean your Rinnai control board has failed. Replacing the PC board restores normal operation. | Fix → |
| Rinnai Tankless Water Heater Error Codes | Complete Guide | Fix → |
| Rinnai Tankless Water Heater Flame Rod Replacement Guide | Error codes 11 or 12, no ignition, or flame-loss shutdowns mean a dirty or faulty flame rod. Cleaning or replacing it restores detection. | Fix → |
| Rinnai Tankless Water Heater Igniter / Electrode Replacement | Ignition failure codes, no hot water, clicking without ignition, and sooty flame rod tips mean the igniter or electrode needs cleaning or replacement. | Fix → |
| Rinnai V65iN Problems & Error Codes | Most V65iN units throw ignition codes (11, 12) from gas supply issues or dirty flame sensors. Check gas pressure and clean the flame rod first. | Fix → |
| Rinnai Water Heater Leaking | Causes & Fix | Fix → |
| Rinnai Water Heater No Hot Water | Causes & Fix | Fix → |
| Rinnai Water Heater Not Enough Hot Water | Causes & Fix | Fix → |
| Rinnai Water Heater Water Too Hot | Causes & Fix | Fix → |