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Refrigerant is R 404 A.

I change solenoid value on a water cool reach in freezer because the valve was leaking through .I also installed a delayed on break .That's all I did I vacuum the system then charge .From then I...

I install some new t-stat for a client the problem is that the previous person who had install t-stat the fan which is green wire was connected to red wired or the 24 volts so the fan would run...

Thank you all for your response.I have some more information the compressor is hermetic also the compressor seems to vibrates sometimes ,also it seems like compressor pumps down that is when it to go...

Thanks for responding so quick ,But does it seems like it pumping down.
THANKS AGAIN

Help:i work on a low temp reach in freezer today which is also water cool ,the refrigerant is R404,the pressures are suct 20 psi and head is 225 the suction line freezes up and after it runs for a...

Can someone in layman terms please explain superheat and subcooling for me please i am just not able to get it.
Thank you