Nordyne E2EH-015HA

[luvnaz]

Hi, We have a Nordyne E2EH-105HA in the home we just bought in Oct. the heater (blower) won't cycle on and off as it should. So I took a look and tried wiggling and adjusting the wire harness and as I did it clicked on. I thought maybe the wire harness was old or had a short so I replaced it. The problem still exists so the problem wasn't the wire harness. The wire harness connects to the A/C Relay Circuit Board so I think this could be the part that is causing the blower not to come on and turn off as it should. But I'm not sure. I don't want to replace parts that don't need to be replaced if I don't have to. Since the unit comes on when I adjust the wire harness into the relay circuit board and the unit comes on then I assume the wires are not making a good connection into the relay. But I'm not positive that the part needs replacing...

Thank you for and advice or help!

Mary

[Robert]

Hi Mary,

The sequencer controls the blower in heat mode, but could be a bad harness, loose wire or bad connection somewhere.


Thanks,
Robert

[luvnaz]

Hi Mary,

The sequencer controls the blower in heat mode, but could be a bad harness, loose wire or bad connection somewhere.


Thanks,
Robert

What is the sequencer and where is it located? How would I be able to test it to make sure it is the part that isn't working right? What harness are you referring to?

Thanks,
Mary

[Robert]

Hi Mary,

It is the control that brings elements and blower on and off. It is on back wall in controls area.

IF it gets the 24vac from t-stat at the bottom terminals, then it should close the top and middle terminals and contacts and send 120vac to left side of element coil.


Thanks,
Robert