vacuum on suction side

[jelectric]

I've got a 2 ton mini split with inverter that sometimes works great and other times the suction pressure will go super low and cause a fault code for low refrigerant or bad 4 way valve

I have 3 of these and they all do the same thing I know there not low on refrigerant i've reclaimed & reweighed

does this sound like a low ambient problem? outside temp about 50 fahrenheit these are all new units and are supposed to be rated to 4 fahrenheit for cooling mode

Does anyone have any idea's any help would be greatlly appreciated thanks

[littleyapper]

definatly a low ambient prob

[jelectric]

Thanks for the reply! I suspected low ambient problem so I moved one condensor indoors where it should stay 80+ fahrenheit.

I'm going back there today to check on it and hopefully move the other inside as well.

I will post results here.