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    rcd1390's Avatar
    rcd1390 Posts: 3, Reputation: 1
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    #1

    Feb 5, 2010, 05:17 PM
    Heat won't come on aC UNIT
    The a/c unit on my roof works fine for cooling, but the heat strips and the fan are not coming on for heating the room
    T-Top's Avatar
    T-Top Posts: 1,871, Reputation: 100
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    #2

    Feb 5, 2010, 09:03 PM

    Need more info. Is this a heat pump? If you changed the thermostat out did you add a jumper from R to RH? All the info you can give will help.
    rcd1390's Avatar
    rcd1390 Posts: 3, Reputation: 1
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    #3

    Feb 5, 2010, 09:32 PM
    No, just have heat strips, the thermostat seems to be working for the a/c, but no power to the heat unit, the thermostat was not changed. Ty
    T-Top's Avatar
    T-Top Posts: 1,871, Reputation: 100
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    #4

    Feb 5, 2010, 09:42 PM

    The heat strips and blower is timed on by a heat sequencer inside the unit. You can try to jumper a wire from R to W at the thermostat to see if it works. Do you have a volt meter and know how to use it?
    rcd1390's Avatar
    rcd1390 Posts: 3, Reputation: 1
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    #5

    Feb 6, 2010, 08:41 AM
    Quote Originally Posted by T-Top View Post
    The heat strips and blower is timed on by a heat sequencer inside the unit. You can try to jumper a wire from R to W at the thermostat to see if it works. Do you have a volt meter and know how to use it?
    No voltmeter... I noticed this morning that the coils are not heating. The fan motor was hot, also. I had to gently push the fan blade to get it started. Your thoughts? Thank you!
    T-Top's Avatar
    T-Top Posts: 1,871, Reputation: 100
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    #6

    Feb 6, 2010, 10:10 PM

    A bad motor run capacitor will give that symptom. Cheap and easy fix.
    johnair77's Avatar
    johnair77 Posts: 59, Reputation: 1
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    #7

    Feb 7, 2010, 07:43 AM

    Bad mtr. Bearings possibly
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