Got an RDI (manitowoc) PCL0127B indoor coil, PCL149M outdoor unit, CF04K6E-TF5-270 comp, Poe oil. Originally R22 but converted to r404 at some point. Walk in cooler supposed to be 34*. Customer called and said its warm. I get on site and its in 2 hour defrost supposed to be at 3am but its noon. Reset defrost timer, unit kicks on and pulls down from 55* to 34* in about 10 minutes. Pop doors open and let it warm up and pull back down, put a done stamp on it and roll out.
Call back this morning with same issue getting warm. I get on site and check it. Unit running, box at 60*, 9lbs sp, 170lbs hp. Sight glass has trickle going bye it. Try cycling unit, adjust txv in and out, check LL solenoid. Finally I turn off cond, call for cooling, let system equalize, turn cond on and system fires up 50ish lbs sp, 240ish lbs hp, unit cooling. Figured something getting stuck in txv so pump it down, change txv, LL solenoid, and filter drier. Pressure test, evac down to 500 microns, open up LL valve and fire it up. Unit starts up and pulls down to 5lbs sp, 170lbs hp, now it's cycling on lp switch. Try adjusting txv in and out with no success. Packed up and left cause it was getting late. So am I plugged up in the distributor or what? Headed back in the AM to keep pluggin away on it.