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    Artphyl's Avatar
    Artphyl Posts: 3, Reputation: 0
    New Member
    		  
    #1

    Jul 21, 2010, 07:13 AM
    Need help with CT87N thermastat
    Installed a CT87N thermastat problem with air conditioning. Can't seem to control temperature. Thermastat runs continually to the point where windows frosted up. Can't turn it off so had to turn of circuit breaker. Just installed yesterday, know it is installed correctly
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
    Ultra Member
    		  
    #2

    Jul 21, 2010, 07:59 AM

    If you know it is installed correctly must be something wrong somewhere else, maybe a short between red and yellow wire or a stuck/welded contactor in condenser unit
    Artphyl's Avatar
    Artphyl Posts: 3, Reputation: 0
    New Member
    		  
    #3

    Jul 21, 2010, 12:10 PM

    Thank you, returned thermastat to store. Replacement is fine so believe the original thermastat was defective.
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