Rinnai Error Code 14: Thermal Fuse
Warning: Your Rinnai water heater has detected a thermal fuse issue. It's safe to use other appliances, but call a professional for repair soon.
How to Fix Rinnai Code 14
- Check the reset button on your water heater. If it's tripped, press it once to reset. If it trips again, call a professional.
- If your water heater has a dial for temperature, make sure it's not set too high (around 120u00b0F is recommended).
- If you're comfortable doing so, visually inspect the heating elements for any signs of damage or buildup. If you see any issues, call a professional.
How to Reset Rinnai Code 14
- Turn off the unit using the power button on the front panel.
- Turn off the gas supply valve.
- Turn off the circuit breaker supplying power to the unit. Wait 30 seconds.
- Restore power at the breaker, then open the gas valve.
- Turn the unit back on. If the error returns, the underlying issue needs repair.
What does 14 mean?
Error code 14 on your Rinnai water heater indicates a problem with the thermal fuse, a safety device that cuts power to the heating elements when temperatures get too high. This is a common issue and usually user-fixable, but it's important to address it promptly to prevent further damage or system lockout.
Affected Models
Replacement Parts
| Part | OEM Number | Est. Cost |
|---|---|---|
| Thermal Fuse | RIN-101021200 | — |
| Heating Element | RIN-101021100 | — |
Related Codes on Same Models
| Code | Description | Severity |
|---|---|---|
| 02 | Stagnant Water Detection | Warning |
| 10 | Air Supply/Exhaust Blockage | Warning |
| 11 | No Ignition | Warning |
| 12 | Flame Failure | Warning |
| 16 | Over-Temperature | Warning |
| 19 | Electrical Grounding | Warning |
| 25 | Condensate Overflow | Warning |
| 29 | Condensate Neutralizer | Warning |
| 31 | Inlet Thermistor Failure | Warning |
| 32 | Outlet Thermistor Failure | Warning |