Looking for some advice. Trane intellipak's, two 40 ton and two 50 tons serving the building. R-407C. All units are having high-pressure trips causing the "compressor trip" diagnostic. I've been getting this alarm on all units. The pressure is in the 325 - 375 psig range.
So far, all we have really done is thoroughly cleaned the condensers, the pressure remains high. I'm considering recovering all the refrigerant out of one of the circuits to measure the charge...but it just seems so odd that I'm having the same issue with all four units, eight circuits in total! If it were one circuit, I could see the possibility of overcharge, or non-condensibles, or restricition, defective txv etc...but all eight circuits with the same issue seems odd.
Condenser fans are all working and rotation is correct. The issue is worse when the second compressor (two compressors in parallel per circuit) kicks in.
It seems like the condenser is undersized, could it be possible? We're only talking about a 85F outside air temp yesterday when I checked all circuits.
Does anyone have any advice on this?