No heat when set on 'EM'. The fan will go on but no heat. The compressor does not come on but that is a good thing. Yes there is 220 to the furnace.
Thanks for you question, I am mr.grzz,
with the unit in em heat, only the electric strip heat will come on, or should, if you are not getting any heat from the heat strips, then you probably have a bad sequencer, these bring on the heating strips, you will more than likely have to replace the sequencer thats bad, sometimes its burned out on top, you might be able to see it, you could tap the sequencer with a plastic pen to see if it is sticking, does the fan come on when in em heat ? if not you may have a bad circuit board, please check your filters as this is very critical for the system to function right, well good luck, hope I was helpful, thanks again, mr.grzz
Hi!! please!!check your heating sequencers or your heating element coils.good luck..
Sounds like one or more of the following -
1) the thermal fuse for each of the elements have melted
2) the elements themselves have broken and opened
3) Heat sequencers have failed
4) One or more fuses inside the heater have failed (if fuses were installed from the factory.).
Items 1 and 2 are indications of poor airflow through the unit for some reason (dirty filter, closed vents, dirty evaporator/buildup of dirt/dust on evaporator.)
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