I have a two story house with two air conditioning units. One for the upstairs and one for the downstairs. I rarely if ever use the upstairs unit because the master bedroom is downstairs and no one lives upstairs. I had some company in town the other day and when we cut the air on it ran...

I was called to a house for no heat. I discovered that the fuse was blown. Trace Tstat wire for shorts, found none. Found heat strip relay melted, replace relay and terminals for wires. When I turned the power on the fan started running. I checked for 24V between red and green, nothing! I...

The fan on my Carrier runs non-stop. The burner kicks on from time-to-time, but the fan is a constant. It never did this until a few weeks ago (settings didn't change). I put new batteries in the thermostat to see if that would help - it didn't. Any ideas to get the fan to shut off?

Hi, Is it possible to the fan to my ducane unit (VL30-284T+D-10+DS) to continue running even after I have uninstalled the thermostat? (Removed it from the wall) I've read some postings here and think it might be the relay button. Is there something I can try or do I need to call a professional?...

Just bought a new home last fall and noticed that the AC fan was running constantly. Replaced the old thermostat with a programmable version. Didn't really use the air much after that but it has been working the heat pump all winter with no problems. Now we are starting to use the AC again and...