Have HVAC Questions? Ask an HVAC Expert for Answers
Hi, I'm Tim and I'm an HVAC expert here to assist you with your questions. Please provide all information I request as it makes it more difficult to troubleshoot something when I'm not there onsite. Essentially, you become my eyes and ears. Thanks for the opportunity to help. At the end of our dialog, you will have a chance to rate my service, but please wait until we are finished and you're satisfied you have all the information you need. Please be patient as many times we work with several customers at once.
So you say outside unit is not running AT ALL, but inside unit won't shut off, correct?
Sounds like a bad thermostat. Have you tried a different one?
That would not let inside unit keep running, however.
It would, yes. It would also allow inside unit to stay on.
To bypass the thermostat, turn furnace or air handler power off, take the front section of the thermostat off
the wall, loose from the back section (called subbase). You will see the thermostat wiring. Take the red wire
on R or RC-RH, yellow or blue wire on Y, and green wire on G and twist the ends of these together. Then power
back on. See if A/C now runs.
Did you need additional help?