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My electric furnace coils aren't working. Help?

Post in 'DIY and General non-hearth advice' started by lugoismad, Feb 1, 2009.

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  1. lugoismad

    lugoismad Member

    Joined:
    May 5, 2008
    Messages:
    91
    Loc:
    Ohio
    I had a 13 SEER Goodman furnace installed in my house last august. The AC and heatpump worked great up until about november, then I switched over to just running the wood furnace. Finally in December I needed to leave for the day, and decided to kick on the electric backup for the day. And of course, it didn't work.

    So, I gave the installer a call, and he came out and installed a new coil set and circuit board. I've used it twice in the last 2 months, and then went to use it again yesterday. And it didn't work again. Blower was blowing, but the house was getting colder and no warm air out of the vents.

    I've taken several electronics courses when I was in college, and plan on hitting it with the volt and ohm tester tonight to see if anything on the circuit board looks like it blew. Does anyone know if this is a common problem and what the fix may be? I'm hoping its just a blown fuse or relay or something.

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  2. RJP Electric

    RJP Electric Member

    Joined:
    Jul 3, 2008
    Messages:
    113
    Loc:
    N. New Hampshire
    I'm sure you checked for power at the breakers, outdoor heat pump/AC disconnect and got 240 volts, and there is no snow buildup around the unit. you should have 240 going to your coil on the furnace some where too perhaps a disconnect or switch on the unit in addition to the regular 120 volt power. To test the unit and bypass the thermostat for now in most heat pump w/electric second stage situations you can open up the furnace cover, push in the safety door switch (if installed) you can tape or hold in for now, and run a jumper from the R and W to engage the first stage, If nothing try from R and W2. You should hear relays click to engage the electric coils. you may want to put a jumper from R and G to turn the fan on if it doesn't come on automatically. If you get heat it may just be a thermostat issue. I wish I could help you more good luck.
  3. Redox

    Redox Minister of Fire

    Joined:
    Feb 23, 2008
    Messages:
    1,099
    Loc:
    Burbs of B'more, MD, Hon!
    Any luck, yet?

    Chris
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