I had a Carrier central air system added to an existing Carrier furnace
this summer. The A/C is the split system type with an outside and
The unit worked nicely during the summer. I was told at the time of
installation that no maintenance was required and to just switch the
thermostat to "heat" in the winter. Well, I did that, and the furnace
came on, but the outside compressor also came on. I called the
installer who checked it out and said I needed to pull out the fuse on
the outside electrical disconnect and set it in the "off" position.
I have talked to other homeowners, and none have to do this. Is it
normal, or should I call the installers back?
Also, with the A/C install, they replaced the thermostat. The furnace
is a two-speed model. The thermostat is a single stage heat/cool
thermostat. Am I losing the two-speed benefits of the furnace? Should
I ask for a new thermostat?