Carrier RTU second stage freezing up
Model # 48HJE014x-5006238
Serial # 4309G40674
Get a no cooling call at 4:30 yesterday, find second stage compressor and evap coil frozen solid. I figure low on charge,late in day. So I pull up the recovery machine and all my crap to see what is left in the system and recharge for the weekend. Well I pull out the charge and get 9.2 lbs and stop. Factory change is 9.4 I believe. I let it thaw, dump the charge back in and let it fire up. While I was doing all of this by the way I had first stage running and it cooled off the space. So it runs for about ten minutes then starts freezing. I am thinking a restriction in this stage somewhere. I have numbers out in the truck. Figured I would post this to get some thoughts.
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