I have a new trane heat pump installed this summer, we made modifications to the air handler, did not install the heat strips, instead I took the old core ( forced hot air, water, oil ), and installed it in the new trane air handler. We have everything finally working including the back up but the fan will not come on by itself. It is ran by a new honeywell pro 8000. although the system ( trane HP and air handler ), is new, it is an older model by at least 6 years. Homeowner bought it with intentions of using but never used, moved this summer and I bought it off of them and had a pro install it but doesn't seem to be proficient in getting the back up to work. It will work if I manually turn the fan on. The furnace is a system 2000 with only two wires that control that portion, which seems to work fine, when it reaches desired temp it will turn off. Any ideas ??
JA: Did you double-check the thermostat's settings? And what about the filters?
Customer: The system came with one of those huge filters on the bottom, which had to be installed also. that's working fine and hardly any use on it. Thermostat settings
could be the problem. I have looked at that several times. My thought is that it would be trane specific. As the system was set for electric back up heat and I replaced it with the old core. Wiring is not right somewhere ?? my thoughts, or like you said it could be just one setting or wire I am overlooking somewhere.
JA: Do you plan on doing the work yourself?
Customer: I would like to as I like to know how things work in case of emergencies. I do have a call to a trane tech but no one can come till next Monday. The answer id right in front of me, but I can not see it ??
JA: Anything else we should know to help you best?
Customer: Not sure, think I explained it right.