Posted by MartyInVa on March 12, 2011 at 05:16:59 from (184.0.116.204):
Back in Dec. the coils on the outside unit froze up. 2T Trane only a couple or 3 yrs old. BIL that has some background in HVAC come over and did some troubleshooting. Best we could come up with was that the thermocouple/thermister was bad. I replaced that and have not had anymore freeze ups. But heres the problem. Double $$ electric bills. We have a 2 story house and this unit is for the upstairs. This morning when I got up I thought it was a little warm, I felt the air from the register and it was warmer than your usual HP air. Checked thermostat and saw that the aux heat was on. Thermostat is set at 72 and inside temp was 72 but unit was still running.Dropped thermostat to 71 and Aux turned off. Same model Honeywell digital thermostats used upstairs and down. Outside temp this morning was 38~. I have also replaced the defrost board (with a used 1) but don't see any change.
Why is the unit using the Aux heat (or what tells it to come on)? At what point is the thermostat satisfied and will cut off the unit?
Thanks if anybody can help. Oh buy the way I saw it was froze up while pushing snow with the 52 8N. (tractor link) :<))
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Today's Featured Article - The Day Mom Drove the 8N - by Brian Browning. My Dad was wanting to put in a garden but couldn't operate the 8N and handle the old horse drawn plow he had found and rigged up to use with the tractor. Well, he decided to go get Mom out of the house and have her drive the tractor while he walked behind the plow. You got to understand that while my Mom is a hard worker who will always help whenever she can... she had never operated farm machinery before that day. Dad got her out there, explained how the clutch was the same as in our o
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