Heating after fan stops running

Questions about repairs and parts for Nordyne furnaces, air conditioners and heat pumps for manufactured homes including Intertherm, Mac and Miller brands. Click here for Nordyne parts.

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jelrod55
Posts: 8
Joined: Mon Oct 03, 2011 2:00 pm

I have finally gotten my Nordyne E1EHA-015 re-wired, it helped when I found the wiring diagram for the 4 to 7 Control Box.

Now since I replaced the control box with relays here is the problem that I have run into, when the heat signal (24V) is stopped the fan turns off but the elements are still on unti the Sequencer times out.

What would recomend as a work around to keep the fan running til after the elements de-engerize??
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jelrod55
Posts: 8
Joined: Mon Oct 03, 2011 2:00 pm

I solved the problem by adding a Off-Delay Timer and doing away with the heating relay that I setup to replace the 4-7 Control Board.

The timer is adjustable for the amount of time to allow the fan to run, I set it at alittle over 2 minutes. This gives the elements a chance to cool down before the fan stops running.
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