Question about Rinnai RHFE-1004FA 38,400 BTU Energy Saver Ductless Heater - Natural Gas
It is found in the lower right hand corner of the heater (as facing from the front) behind the trim pieces close to the wall. It will be a yellow wire with a black plastic tip. Prior to replacing it, Hold it in your hand and see if the heater shuts off after a minute or so. If it does, seal the area behind the heater for air leaks and raise up the sensor closer to the top of the heater. There is slack in the wire if you remove the front cover of the heater and undo a tie holding the excess wire. If holding on to the sensor does not help, check the connection on the circuit board. Replace it if it does not help. Part nuber 1004F-2057.
Posted on Dec 10, 2007
The rinnai is almost like a monitor heater. when the thermostat lead gets unconnected the variable temp sensor goes to 42 degrees and the heater keeps firing. check the thermostat wire that it is inserted fully into its "molex" connector. if it still keeps firing, change the thermostat wire. the thermostat wire is what is called a j-k thermocouple.
Posted on Dec 09, 2007
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