I just had a rinnai rhfe-431faIII heater installed yesterday. About 10 min ago the heater turned off and the "on" light is flashing red and the "degree" lights 60 to 76 are flashing green. there is no explanation in the manual for this "code". Turned heater off and gas at heater and supply off so safe. But anyone know what this means (other than I have to call the installer). Thanks
Either the high limit switch is either defective or the wire has come off and the circuit is open. It is found under the heat shield on the front of the heat exchanger. Or there is a blockage in the flue or the blower motor is not running. Take the to trim piece off that is closest to the wall and disconnect the gray plastic hose off of the vent termination and try to start the unit. If it starts, you need to clear out the outer ring on the vent termination. If it continues to fail, there is still a problem and now you will need the installer back. Check all electrical connections going to the circuit board while you have the front cover off.
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