11 🟡 Repair Required

Rinnai Error Code 11: No Ignition

⚠️ 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

  1. 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.
  2. 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.
  3. 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.
Type: digital display Display: front panel

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 of Rinnai Code 11

  • 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.

Applicable Rinnai Models

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Replacement Parts for Rinnai Tankless Water Heater Code 11

Igniter OEM: RIN-101901100
Gas Valve OEM: RIN-101901200
Thermocouple OEM: RIN-101901300