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sounds like you covered most all bases. without knowing pressures, I would look for a possible restriction. Since the TXV was replaced, are you sure you went back with OEM? If refrigerant was weighed in, was the drier an oversized one? It's rare but I have found some units that just don't cool right with the factory weigh in charge. You may want to try to charge by pressures. If it has a condensate pan with a hot gas line, be sure it is dry before trying as this effects the pressures. Good luck. Looking forward to hear about the fix.
as long as you recovered the charge, pulled a vacuum, changed the filter/dryer, and added the correct amount of refrigerant as a liquid, you should be good to go.
Your local refrigeration service company could have it. You may can call the mfr direct to get it. If you have a friend who is licensed, he can get it at wholesale price.
I use this on a regular basis and have had no issues. I believe it will work. If I had some numbers from the compressor plus a brand name such as Copeland, Tecumsah, embraco, etc., I may be able to tell you more about the compressor HP.
http://www.ascendmfg.com/PDFs/CT/hdmanual.pdf
start at this web site and see if this manual will help. It has phone number on last page if you need to call them.
ColdTech is now Jimes Corp. Just Google you unit if what I have does not help enough.
Good luck to you.
This sounds like a stuck relay to me. I have seen this problem before. The defrost clock kills power to the compressor relay coil during defrost. If the contacts in the relay are welded together the compressor runs while unit is trying to defrost. On newer units this relay is mounted in base of unit on the side or back of the electrical box near center bottom of unit. The compressor relay is a small rectangular box with 4 wires attached. It can be replaced with a single pole 20 amp contactor with a 120 volt coil/ or 240 volt. Check the units name plate voltage rating and ratings on old relay! ;)
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