New Job. Its on of the stores ill be responsible for, anyway call came in walk in freezer at 20 degs, been at that temp all day, say it was fine before today
So I get there, verify its running, has a full sight glass, hook up gauges, 50/300, head pressure high, so i clean the coil, no change. Recover some gas (2 pounds) till i started to get bubbles in glass. head pressure still around 300.
its about 98deg ambient outside. 10deg. subcooling, let unit run for 30mins no change in box temp. Run water over condenser to get the head pressure down.
Pressure start looking better, 30/225 box cools down to 0deg, before i left.
Its got a alco style txv, this is what the other tech and I came up with a likely problem, the txv isn't feeding the coil right, and getting alot of liquid coming back up. Or there is a chance it could have some moisture in the system.
im not a full time refer guy