Question about Rinnai RHFE-556WTA Direct Vent Heater NG Air Conditioner

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# 11 appears when it trys to start...... not heating

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Code # 11 indicates an Ignition Failure. According to the Owners Manual you should do the following: Check that gas is turned ON. Check that the vent termination is not blocked. Refer to the Restart Function explanation.


If the appliance fails to ignite, the appliance will attempt ignition after 1 hour. The "Ignition Failure" fault code, 11, will appear during that hour and disappears after a successful ignition. If ignition fails again, then the fault code will remain and another attempt to ignite will occur in 1 hour. The fault code is not stored in the fault code history.

If the flame is extinguished during forced combustion then the appliance will attempt ignition after 1 hour. The "Ignition Failure" fault code, # 11 will appear during that hour and disappears after a successful ignition. Forced combustion takes place for about 15 seconds after ignition. After this time, the temperature control logic controls the combustion.

If the flame is extinguished (burner combustion failure) while the temperature control logic is operating the appliance, then the appliance will immediately attempt ignition. No fault code will appear.

In this problem repeats itself, contact you local Rinnai Authorized dealer/serviceman.

Hope this helps you to troubleshoot and solve the problem.

Posted on Mar 31, 2011


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