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Comfortmaker furnace fires sometimes

Cycles 2 or 3x and then valve will not open (new glow plug is installed)

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  • richglenn Jan 07, 2009

    I believe it may have been a build up of dust on the mercury switch on the T stat...but It did fail to light one time after that with a red light blinking on the module. I think it was 3 blinks. I also hear a strange click from solenoid on valve but it opens and shuts down properly (noisy though). T stat is new and glow plug.

  • richglenn Jan 08, 2009

    Cycles fine for half a dozen times and then codes to red solid light no blinking. Then you half to lower the T stat all the way down and back up to desired temp. Light goes out when you lower the Tstat and then it fires up when you raise it back up.

  • Danny Clark
    Danny Clark May 11, 2010

    Is the ignitor glowing? Any fans coming on? any ignition? what exactly is it doing/not doing and in what order?

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Is there any led lights inside the fan cabinet that blink a code if so write down the code then check inside the panel it might tell you the code description if so let me know what the description is and we can procede

Posted on Jan 06, 2009

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It does not fire at all times igniter works, I can hear the gas valve when opens, some times it fires for a minute and some times does not fire at all


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1 Answer

I have an amana furnace and it will not kick on. When the switch is turned on the furnace will try to run but won't warm up and blow. Does it have a pilot light?? or a reset button??


Try this----turn furnace off at stat and unplug furnace for 10 minutes. Plug it back in, the combustion and blower motor may both kick on for 2 minutes or so or not. Turn t-stat to heat and turn up stat to highest setting. Hurry out to furnace and you should hear the combustion motor(little motor piped to flue) kick on, then wait for a "click" next you should see a glow from the igniton element, then another click, next will be the gas valve opening. If no ignition, it will try 3 times and then lock ur *** out, and just turn on the blower just as a precaution. If you dont see the glow plug glowing after the first click, replace the $20 glow plug and you should be good to go. The glow plugs crack, and this is what breaks the connection. If you gas valve has a knob, and says pilot----turn the valve to pilot, push down on the knob, light the pilot and hold down knob for 2 minutes to heat up flame sensor. Make sure the t-stat is all the way down or off. After 2 minutes of holding pilot knob down, let go and your pilot should be still lit, if it is, then turn gas valve to ON and then turn t-stat up to kick on furnace. If ur pilot doesn't stay lit, get a new thermal couple and replace it-$12 bucks. Good luck and let me know how it went. azeddysac@yahoo.com

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1 Answer

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Shastalaker7
A/C, & Heating Contractor

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1 Answer

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