Nordyne Intertherm E1EH-015H

Problems related to residential installations.

- Nordyne Intertherm E1EH-015H

Postby Freon » Mon Sep 03, 2012 3:25 pm

Have you had any bad electrical storms?
You wrote, " Specifically, it will run at any temperature that the thermostat displays, and it will heat up the coils inside, and once the coils are an orange hot color." Turn off the power to the furnace. At the furnace control board find where the thermostat wires connect. Now disconnect the wire connected to the W terminal. Turn the furnace back on with the thermostat NOT calling for heat (thermostat set to below room temperature). If it still behaves as before (furnace runs and shuts off), you need a new control board. If the furnace does not start heating, then you have either a bad thermostat or a problem in the thermostat wiring between the thermostat and furnace.
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- Nordyne Intertherm E1EH-015H

Postby Trini2dbone » Thu Sep 06, 2012 2:41 am

wmmspencer -
> First and foremost, thank you to any and all professionals that reply to
> this thread.
>
> I have a Nordyne downflow furnace (model # in subject) in my residence, and
> it has ran in to some problems. Specifically, it will run at any
> temperature that the thermostat displays, and it will heat up the coils
> inside, and once the coils are an orange hot color, it will kick off, and
> repeat the process over and over. The thermostat was already replaced.
>
> Now, my question is - What parts would any of you recommend to replace
> on the furnace to fix this issue?
>
> I do not plan to do this work myself, as I am not an HVAC pro, but I would
> like to know so that I have some idea on whomever I hire is doing the
> correct things and replacing the correct parts. Money is tight, and I can't
> afford an inflated bill.
>
> Thanks again.
I am not farmiliar with this particular electric furnace but from what you're saying (assuming the stat was replaced properly - wired) it sounds like the contactors are fused together keeping the heat on all the time; this is why its on even after replacing the stat. "kicking off" after getting to a cherry hot state maybe a Hi-Limit safety switch which kills all power to the unit but automatically resets once cooled and the process begins again.
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