NO
Is Head Pressure low &
Suction Pressure low in harvest?
YES
Feel temperature of
Receiver after 30 seconds
into harvest cycle
Cold
YES
Is Head Pressure high &
Suction Pressure low
in harvest?
No; Harvest PSI Normal
Replace
Harvest
YES
Valve
Not a refrigeration problem,
Clean & Inspect Evaporator
Feels Warm to Hot
YES