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-   -   A/C comes on by itself (http://www.diychatroom.com/f17/c-comes-itself-6135/)

thobrooks 01-27-2007 08:00 AM

A/C comes on by itself
 
I have Tempstar 10 AC unit and a separate electric heater controlled by a common thermostat. The thermostat is set on heat (it is 65 degrees inside). Yesterday the AC unit came on by itself. Wife turned thermostat to off - no effect. Flipped breaker in house and fan stopped but compressor outside continued to run. Flipped breaker outside by the unit which stopped the AC. When I got home from work I flipped the breaker outside back on and the AC immediately started again. Replaced the thermostat but I still have the same problem. What are the next things to check?

Thanks for any suggestions.

jbac 01-27-2007 08:07 AM

outside condensing unit needs a new contactor

thobrooks 01-27-2007 03:33 PM

Problem solved
 
Wow. An hour drive to the parts store in Houston, $13.53 for the part, including tax, and I am back in business. Now I am trying to convince my wife I saved enough by fixing it myself to buy a wide screen LCD TV before the Super Bowl. She's not believing a word I say.


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