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www.myhvacparts.com I have used these guys for TRANE parts before. Always have trouble with Trane, they are a bit tight lipped about service manuals, and are right proud of the parts, if you go to an authorized dealer. Replace the cap. again when you...
You'd be better off to buy a new unit. I'd say it was the condensor coil sice they said the compressor is 2 yrs old. Not too many evaporating units with compressors. You have no business posting answers about air conditioners