Bought a brand new house with two Trane Heat pumps. ONe has worked perfectly from the get go, the other has been problem after problems with an overheating compressor. After lots of patching up, the compressor finally gave after 5 years and 6 months (warranty gone), so I buy another unit. After install, it is working great, and then after working for about 6 hours, the compressor shuts off. I can get it to come back on if I run water over it.
Too make a long story short, the AC guy figures it just had a bad compressor in the new unit, so he puts another compressor in. Same thing. Works great for about 4 to 6 hours and then shuts down in the heat of the day. No problems running the unit at night.
What can cause a brand new compressor to overheat. Everybody that comes out looks at the outside unit. There is clearly something going on with the other parts of the system in the attic, in the ductwork? The filters are clean. I am smart enough to check that, but I can't get to the root of this problem.
Help. I have had 10 AC guys look at this. They usually run water ovr my compressor for 10 minutes and charge me $100. I need to find the problem and the professionals are not finding it.