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    brian0512's Avatar
    brian0512 Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Dec 13, 2007, 04:35 PM
    My furnace won't light and the lights on my control module won't come on
    Ok a couple of question if you can help
    I have a comfortmaker furnace I believe 1999 it came on a couple of times after I bought a new transformer, board, capacitator, and ignition control module now it won't come back on What to Do! Also I wanted to know if you can tell me the difference between a single rod and a dual rod unit and how to tell if my unit is either.The control module I replaced was a S8600M with a new S8610U Please Help! Also The new module has A flame And A sensor light which neither light will come on now!! THANK YOU:)
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Dec 13, 2007, 11:55 PM
    You need to keep your posts together

    From my previous post back to you.

    ((Check for 120 volts coming to the furnace. Then check for 24 volts coming out of the transformer.Then make sure the thermostat is calling for heat. There might be a door switch that the blower door activates. They go bad all the time and stop the 120 volts from getting to the furnace. Check to make sure it is working. Post back with your results and we will go from there.))

    Did you check the door switch yet as requested by my previous post?

    You have spent a boat load of $$ with no results. Chech the door switch and if that is not it call a HVAC professional.
    labman's Avatar
    labman Posts: 10,580, Reputation: 551
    Uber Member
    		  
    #3

    Dec 14, 2007, 04:27 AM
    Check the sequence at https://www.askmehelpdesk.com/heatin...ons-58313.html
    Also make sure the control voltage is OK, the fuse could be blown. Finding the fuse is in the sticky too.
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