[T77911S]

i will check with trane again on the size of the evap. i cant remember for sure what robert said as far as the evap size to condensor size. but i do know both condensor units together are too big for the air handler unit. the liquid line is about 80-90 degrees. i dont remember what superheat was or if i even got to check it before due to the line freezing. i did not even try to check it the last ime i went up there.

the other condensor unit cools fine. there are air bubble in that units site glass too, but not nearly as bad as the bad unit.

i dont know if the air handler will ever be changed. the space it is in if VERY tight. it is up in the ceiling (drop ceiling) with water pipes, electrical pips and stuff all around, so it may be a matter of trying to get it to work the best it can.

originally there were 2 seperate air handlers for the chiller up on the 7th floor. one is in a closet, the other in the ceiling. i think the one in the ceiling provides about 5 ton of air, the one in the closet is bigger, but i dont know what size it is. the AH in the ceiiling was converted to a condensor system as a backup to the chiller, but in reality, now the condensor units are the main units in the summer, but only one works.

the one condensor unit works, i would like to get the other working and alternate units each month.

the last time i was up there, i pumped all the r22 into the condensor becuase i was going to open the lines to the evap and blow all that out to make sure it was not clogged. i originally thought it was freezing at the evap. before i opened it, i thught i would take a better look at where it was freezing, so i let the r22 back into the rest of the system, fired it up and that is when i saw it freeze at the comp. which is not what i thought it originally did.
when i let the charge back into the evap side, could it have knocked lose what was clogging the line in the evap?

it is a splitter evap. but they are 2 seperate evaps in the same air handler.

with the low pressures, shouldnt the evap freeze? not the comp?