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Coleman gas H/A not shutting off

I put in a a new thermostat today a simple 2 wire unit CT-30 ...Unit works but will not shut off when I change the temp control.  Could sawdust get inside major unit in closet & cause this problem? Thanks!!

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  • ebysan Aug 27, 2008

    I had a Heating & Air repair person check unit... The Blower comers on automatically when the house temp. reaches 90 degree in a Coleman Unit.  I did not know this.  The unit was humming . He replaced the Relay switch...He re installed my original Thermostat & all is working well.  Thank you so much!

  • ebysan Aug 28, 2008

    I am selling the mobile home & I wanted everything working well when the Health & Safety Inspection was done..  All is working well.,.Thanks for the information!


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Yes and No. Sawdust even when in get in internal parts will not cause the problems that you are experiencing. More than likely your sencondary thermostatic control for the condensor is not set at proper settings to work proficiently with external thermostat.

Posted on Aug 27, 2008

  • fosterb9 Aug 28, 2008

    Sorry, about having to call a repair person. It can be costly.


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