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    jean7's Avatar
    jean7 Posts: 2, Reputation: 2
    New Member
    		  
    #1

    Nov 28, 2007, 06:37 AM
    No heat
    I have a Concord 90 high eficiency furnace, the aircondition works fine, but the heat won't work, the green light is flashing, the flame comes on for a few seconds then shuts off, my house is freezing, can someone help and advise how I can fix this? the filter is new.:mad: :confused:
    juggallojed's Avatar
    juggallojed Posts: 165, Reputation: 10
    Junior Member
    		  
    #2

    Nov 28, 2007, 05:52 PM
    https://www.askmehelpdesk.com/heatin...ons-58313.html


    Gas forced air.

    1. Sequence of operation.
    2. Blower turns on but there is no heat.
    3. What is a flame sensor?
    4. What is a pressure switch?
    5. Where is the diagnostic light?
    6. What is a transformer?
    7. What is a main limit?
    8. What is a roll out limit?
    9. What is a spill switch?
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
    Ultra Member
    		  
    #3

    Nov 28, 2007, 09:12 PM
    The flashing light is giving you a code, from no light as a start,count the blinks, example,1 blink a very short pause and them 3 more quick blinks is a code 13,, look on door,inside or maybe outside you should find a glued on paper with a list of codes and what the code means, let us know
    jean7's Avatar
    jean7 Posts: 2, Reputation: 2
    New Member
    		  
    #4

    Nov 29, 2007, 06:40 AM
    Found the problem, after a lot of research, it came down to cleaning the flame sensor, it now works great, thanks for all you help
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