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    Booster Posts: 2, Reputation: 1
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    #1

    Nov 29, 2008, 09:40 PM
    Concord furnace blowing cold air (LED blinking 4 times)
    I have a Concord furnace that started blowing cold air continually today. The LED on the Honeywell unit is blinking 4 times indicating the limit switch or rollout? The filter was very dirty so I replaced it... then tried powercycling the unit, etc. but the LED still blinks.

    Is there an easy way to reset the switches w/out replacing them to see if the issue was caused by the dirty filter?
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
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    #2

    Nov 30, 2008, 12:06 AM

    Most limit and rollouts have reset buttons,, little button is between where the 2 wires are plugged in,, also most circuit boards have a plug-in type fuse,(looks like a automotive fuse) check it ,make sure its OK and not blowed
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    #3

    Dec 1, 2008, 08:43 PM

    No reset button or fuse on this model. Any other suggestions?
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