Have HVAC Questions? Ask an HVAC Expert for Answers
Hello and thanks for using this service, if you have been waiting do not worry or get upset I am just one of the techs on here and I try to get to as many customers as I can and I just picked up your question now. Please give me time to respond sometimes I get your replies late so there may be a delay in my response.
Is the main blower running?
OK what error exactly comes up?
OK that means one of the high limits have tripped open can you check all the high limit sensors around the burner area to see if any are open continuity wise?
There should be 3 two around the burner and one likely by burner wall. If you have a picture of the wiring diagram I can help you find them. Just upload a picture of the wiring diagram here.
The one that is rectangular and brown with the two wires to it connect those two wires together and try it and see if ti works, that one fails all the time.
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