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    53Aubrey's Avatar
    53Aubrey Posts: 2, Reputation: 1
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    #1

    Oct 27, 2013, 09:33 PM
    Heil forced air furnace no start
    I have a thermostat that calls for heat but nothing happens. I have tested voltage at the thermostat, there is voltage at the furnace where stat wire make first connection. There is no voltage at the gas valve. I am losing it somewhere between.
    The normal operation should be, call for heat, exhaust fan starts up, electronic igniter sparks, pilot lites, burner ignites and fan kicks in. I get nothing. No attempt to do anything. Please help with your expertise. Sheldon
    Grady White's Avatar
    Grady White Posts: 1,417, Reputation: 59
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    #2

    Oct 28, 2013, 06:40 PM
    Set the thermostat for "Heat" & turn it up well above room temperature. Measure voltage at the furnace between R & W low voltage terminals. If you get 24v, there is no power getting to the furnace via the W (heat) terminal. You probably have a bad stat or wire.
    53Aubrey's Avatar
    53Aubrey Posts: 2, Reputation: 1
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    #3

    Oct 28, 2013, 07:10 PM
    Quote Originally Posted by Grady White View Post
    Set the thermostat for "Heat" & turn it up well above room temperature. Measure voltage at the furnace between R & W low voltage terminals. If you get 24v, there is no power
    getting to the furnace via the W (heat) terminal. You probably have a bad stat or wire.
    Your right I changed out the stat and I was up and running. Thanks for your time
    Grady White's Avatar
    Grady White Posts: 1,417, Reputation: 59
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    #4

    Oct 29, 2013, 06:36 PM
    Glad to help & glad it was that easy, most are not.
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