- Carrier system
- Straight cool c/u
- Gas furnace (burners were not on)
- Cased coil
- R22
- Pressures 60/330 (r22)
- Superheat 35°
- Piston
- 15° split
Swollen capacitor on arrival. Replaced, everything working as it should. Couple hours later they call back saying c/u isn't running. Head back out and find compressor off on thermal, cool it with a hose and fire it back up. Pressures 60/330 (r22). Superheat 35°. 15° split. Cleaned c/u coil to cover the baes. No change once dry. Sure seems like a partial restriction with an overcharge. Remove some r22 to bring head pressure down, split drops with it. Pump the unit down and pull out the piston. It looks fine, clean it out anyway. No screen in c/u valve (weld on fitting). Replaced liquid line drier. Put it back together, pull vacuum, no change. Start thinking non-condensables in the refrigerant, reclaim the r22, pull another vacuum (down into the 400 micron territory). Start to recharge with fresh r22 and cannot get anywhere near the factory charge into the system (not an unusually long or short lineset) without head pressures skyrocketing. No temperature change across the liquid line. At this point I tell them you have a restriction in the system that cannot be located with it getting more expensive and time consuming.... It's old and not worth investing anymore time and money into and call it a day.
I guess I'm just looking for some reassurance that I didn't happen to miss something I shouldn't have. Any thoughts would be awesome.
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