Question about Intertherm 56000 Btu Gas Furnace
You are over heating because of dirty filter, coils, or bad or collapsed ductwork check return especially. on the units data label there should be a max and min temp rise this is the difference from incoming and outgoing air through the furnace. Check this.
or it could actually be a bad switch.
Posted on Oct 22, 2013
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Posted on Jan 02, 2017
The only thing that tells the unit to come on and off is the thermostat so I would definatly say it is it. When you turn the system back on, does the a/c run normally? If it does, then it's the problem with the heating side of the tstat. Also, does the fan come on when you put it to on and then turn of when you switch it back to auto? If it does, then the system is working fine, its the t-stat. Let me know if you have any more problems.
Posted on Mar 24, 2009
Your blower motor has several speeds to it and by the problem you are having it sounds as though the blower motor may be going out. The motor has a slower speed for the heating cycle and since you have the noise in the heating mode I suggest having the blower motor changed as soon as possible since it could cause other problems in the heating section of the furnace( possibly burning out the high limit switches). Good Luck on your repairs hope this helped
Posted on Oct 20, 2009
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