Question about Amana Heating & Cooling

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I have an Amana Air Command 90 Gas Furnace. It works and the heat will kick in when I set the thermostat to temps like 74, 75, 76 degrees. However, the unit will then shut off and the temp in the house drops and I'll wake up to it being 63, 64, 65 degrees, etc. Thoughts?

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  • billpavlou Dec 07, 2008

    that wasn't meant to be posted as a solution - not sure what happened there

  • billpavlou Dec 07, 2008

    Well even if I raise the t-stat all the way up to 78-80 degrees, the unit will finally kick on for varying times. sometimes 10 seconds, sometimes 60 seconds and sometimes minutes at a time. Even after it shuts and I leave it alone it will still come back on at some point. It then just shuts off and never seems to heat about 66-67 degrees.



    I know that I'm not making this easy by not adequately articulating the problem. Is there anything I can troubleshoot or something specific to look for as a way to elminate problems before having to call someone tomorrow?



    Again, I appreciate your help and patience.

  • Ken Bledsoe May 11, 2010

    Not really the button is the safety button on unit. The clicking sounds like the sparker trying to light pilot light. If it clicks repeatedly. What kinda confuses me is you move to t-stat manually and it starts, then let it go and it will not hold temp. right.

  • Ken Bledsoe May 11, 2010

    Sounds like t-stat problem. How old it the t-stat? let me know. ken

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Ok try this. Take a small diameter wire about 6 inches long. Go down to the furnace and remove the bottom panel. locate where the thermostat wires go into your unit and with a small screw driver place the jumper wire the 6" one and place it on red and white leave the other wires in place including the white and red ones. replace the bottom panel unit should start immediately. If it does you just solved the problem t-stat is bad. Now if the clicking starts and doesn't start the pilot your problem is gas valve related. This is another thing to check. You have a flame proving device located at the last burner looks like a thick piece of wire. Take some steel wool and very gently clean the surface to remove the carbon that has built up on it. Try this first as it is easy to see if the flame proving device was dirty. let me know ken

Posted on Dec 07, 2008

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I really don't know a whole heck of a lot about this kind of stuff. The thermostat is made by Honeywell and it digital, not sure of the age. I don't think it is a t-stat problem, bc as I investigated a little further, there seems to be a "clicking" noise associated at the unit. I removed the bottom panel of the unit and there is a switch on the left side that remains depressed when the panel is inserted and closed. this seems to be the source of the "clicking". Forgive my ignorance, but does that give more insight to what the issue could be?

Posted on Dec 07, 2008

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