Rinnai Error Code 71: Gas Valve Circuit Error
Warning: Your Rinnai water heater has a gas valve circuit error. It's safe to use other appliances, but don't operate the water heater until the issue is resolved.
How to Fix Rinnai Code 71
- Check if the power switch is turned on
- Ensure the gas supply is turned on and the pilot light is lit (if applicable)
- If the water heater is still under warranty, contact Rinnai's customer support for assistance
How to Reset Rinnai Code 71
- 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.
Resetting clears the code from the display but does not fix the underlying fault. If the code returns after reset, proceed to the diagnostic steps above.
What Does Rinnai Error Code 71 Mean?
The Rinnai 71 error code indicates a problem with the gas valve circuit. This could be due to a faulty gas valve, a wiring issue, or an issue with the control board. The water heater will not operate until the problem is fixed to ensure safety and proper function.
Common Causes
- Faulty gas valve
- Wiring issue in the gas valve circuit
- Control board malfunction
Diagnostic Steps
| If... | Check | Expected |
|---|---|---|
| Water heater is not producing hot water | Gas valve solenoid | Coils should be cool if no gas is flowing |
| Water heater is not igniting | Ignition system | Spark or flame, depending on the model |
Applicable Rinnai Models
- CU(gas)
- HE(dual_fuel)
- HE++ Series(gas)
- I-SERIES(gas)
- NCB(gas)
- NPE(gas)
- RE(gas)
- REP(gas)
- RL(gas)
- RU(gas)
- RUCS(gas)
- RX(gas)
- RXP(gas)
- Rinnai NCB Series(gas)
- Rinnai NPE Series(gas)
- Rinnai R Series(gas)
- Rinnai RL Series(natural_gas)
- Rinnai RU Series(natural_gas)
- Rinnai RUR Series(gas)
- Rinnai VSP(gas)
- V(gas)
Replacement Parts
| Part | OEM Number | Est. Cost | Where to Buy |
|---|---|---|---|
| Gas Valve Assembly | RIN-100025000 | — | Find Part |
| Control Board | RIN-100030000 | — | Find Part |
Related Codes on Same Models
Other codes that affect the same Rinnai model families as 71.
| Code | Description | Severity |
|---|---|---|
| 02 | Stagnant Water Detection | Warning |
| 10 | Air Supply/Exhaust Blockage | Warning |
| 11 | No Ignition | Warning |
| 12 | Flame Failure | Warning |
| 14 | Thermal Fuse | Warning |
| 16 | Over-Temperature | Warning |
| 19 | Electrical Grounding | Warning |
| 25 | Condensate Overflow | Warning |
| 29 | Condensate Neutralizer | Warning |
| 31 | Inlet Thermistor Failure | Warning |