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    tpack37's Avatar
    tpack37 Posts: 3, Reputation: 1
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    #1

    Nov 6, 2009, 02:58 PM
    Concord 80 plus problems
    Hi I have a concord 80 plus furnace that's blowing nothing but cold air. Also I noticed that the ignition coil or rod does glow and because it doesn't glow it not igniting the gas in the furnace. The green light blinks 4 times which based on the codes on the door means the limit or roll out switch is open. How can I fix this without having to call a HVAC peson. Thxs
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
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    #2

    Nov 6, 2009, 03:44 PM

    The ignitor does or does not glow? Change you filter and check the high limit switch, just tap it. Also there are probably 2 roll out switches follow the red wires the roleouts have red reset buttons in between the wires.
    tpack37's Avatar
    tpack37 Posts: 3, Reputation: 1
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    #3

    Nov 6, 2009, 03:59 PM
    Thanks for the answer. Where is the high limit switch and the roll out switch located?
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
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    #4

    Nov 6, 2009, 04:01 PM

    Roleouts are usually on top or on either side of the burner
    http://www.mobilehomerepair.com/medi...yne/626343.jpg
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
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    #5

    Nov 6, 2009, 04:02 PM
    High imit above the burner.

    http://store.hamiltonhomeproducts.co...-29041-005.jpg
    tpack37's Avatar
    tpack37 Posts: 3, Reputation: 1
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    #6

    Nov 6, 2009, 04:10 PM

    OK thanks. Ill check both and let you know what happens
    ken1966's Avatar
    ken1966 Posts: 1, Reputation: 1
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    #7

    Dec 15, 2013, 07:45 AM
    Had power surge and furnace wouldn't ignite ran new electrical wiring to stop further surges and furnace quit working all together so relaced ingniter control board and still get nothing
    Grady White's Avatar
    Grady White Posts: 1,417, Reputation: 59
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    #8

    Dec 15, 2013, 08:53 PM
    May be a silly question, maybe not but do you have 120 volts between the black & white wires coming into the furnace? Is the ground connected?
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