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    fitoboi's Avatar
    fitoboi Posts: 1, Reputation: 1
    New Member

    Dec 5, 2006, 11:05 PM
    Open limit switch indicator light
    I have a goodman furnace and just the other night I noticed the house wasn't heating, I checked the furnace and the indicator light suggested vent blockage checked the vent stack that leads to chimney and found 2 dead birds in stack removed them and started furnace, thought I had it fixed. All worked fine for about 5-8 minutes. Then kept cutting itself on and off again every 5 min. indicator light now says open limit switch/check limit switch.
    Don't have manual. What am I looking for? Where would it be? If I find it, what do I do? Appreciate any advice I can get! Thanks
    NorthernHeat's Avatar
    NorthernHeat Posts: 1,455, Reputation: 132
    Ultra Member

    Dec 7, 2006, 05:08 PM
    Check filters and blower, plugged evaporator coil or secondary heat exchanger. Furnace is overheating because not enough air is going through it to keep it cool.

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