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Rinnai 556 WT Energy Saver Heater - Error Code 11


I have a Rinnai 556 WT Energy Saver Heater and it is giving me an Error Code 11.

Can you advise how to fix it?

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  • Perry Putnam
    Perry Putnam May 11, 2010

    Ok I found that code 11 is an ignition failure. Turn the power to the system off for a few seconds then on and watch closely to see what it does.

  • Perry Putnam
    Perry Putnam May 11, 2010

    generally there is a code list either on the inside cover or in you manual. What does it say a code 11 is?



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SOURCE: Code 11 come out from the led. The heater rinnai

A couple of things can cause a Code 11(Ignition Failure): The gas line at the heater is not turned On or not turned on all the way. Also an obstruction in the Direct Vent Termination.

According to the Owner's Manual:
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.

If the problem was not either of the 2 listed above, the electronics may need to be reset. You can do this by turning the Master ON/OFF Switch to OFF and unplug the cord from the wall outlet. Leave the unit unplugged for 15 minutes, then plug it back in and turn the Master ON/OFF Switch to ON. The electronics should revert back to the original factory settings. From there you can set them as you like. If the reset attempt fails, a service call by an authorized service technician is the next step.

Hope this helped you to troubleshoot and solve the problem. Please let me know. Thanks.

Posted on May 31, 2011

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