Rinnai Error Code Reference — All 7 Codes
Complete Rinnai error code cheat sheet. All 7 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 | Often a cheap fix? | Guide |
|---|---|---|---|
| Rinnai CBU Combi Boiler Error Codes | Complete Fault Guide | — | 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 29 | System Communication Fault Fix | — | 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 RUR Series Error Codes | Tankless Water Heater Fault Guide | — | Fix → |
| Rinnai Tankless Water Heater Error Codes | Complete Guide | — | Fix → |