Rinnai Error Code 11: No Ignition
Warning: Your Rinnai water heater is not igniting, which could lead to a lack of hot water. No immediate safety risk, but call a professional soon.
How to Fix Rinnai Code 11
- First, check if the gas supply to your water heater is turned on. If it is, try turning it off and then back on again.
- Next, locate the reset button on your water heater. It's usually near the control panel. Press and hold it for about 60 seconds, then release. This may reset the system and solve your problem.
- If neither of these works, it's time to call a professional. Don't attempt to open the unit or touch any gas lines yourself.
How to Reset Rinnai Code 11
- 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 11 Mean?
Error code 11 on your Rinnai water heater indicates a 'No Ignition' issue. This means the burner isn't firing up to heat your water. This could be due to a few reasons, but don't worry, it's usually a simple fix. Let's dive into the possible causes and what you can do to troubleshoot this at home.
Common Causes
- The most common cause is a faulty igniter. The igniter sparks the burner to light the gas. If it's not working, your water heater won't ignite.
- Another common issue is a problem with the gas supply. This could be a blockage in the gas line or an issue with the gas valve.
- Sometimes, the issue might be with the control board. If the board isn't sending the right signals, the igniter won't work.
- Lastly, it could be a problem with the thermocouple. The thermocouple tells the control board that the burner is lit. If it's not working, the board won't send the signal to keep the burner on.
Diagnostic Steps
| If... | Check | Expected |
|---|---|---|
| You hear a clicking sound but the burner doesn't light | The igniter. Use a multimeter to test its resistance. It should be between 10-20 ohms. | Within the specified range |
| The igniter is working but the burner still won't light | The gas supply. Make sure the gas valve is open and there are no blockages in the gas line. | Gas supply is open and no blockages |
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 |
|---|---|---|---|
| Igniter | RIN-101901100 | — | Find Part |
| Gas Valve | RIN-101901200 | — | Find Part |
| Thermocouple | RIN-101901300 | — | Find Part |
Related Codes on Same Models
Other codes that affect the same Rinnai model families as 11.
| Code | Description | Severity |
|---|---|---|
| 02 | Stagnant Water Detection | Warning |
| 10 | Air Supply/Exhaust Blockage | 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 |
| 32 | Outlet Thermistor Failure | Warning |