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Ask Randy 43 Your Own Question
Randy 43
Randy 43, Home Appliance Technician
Category: Appliance
Satisfied Customers: 3771
Experience:  20 yrs experience 18 in home,gas license , refrigeration expert
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We have a Sub Zero Model 650/S. The refrigerator side unit

Customer Question

We have a Sub Zero Model 650/S. The refrigerator side unit isn't cooling below 42 Fm freezer is OK. The refrigerator suction side pressure varies from about 32 psi to 45 psi, will rise to 45 psi and the compressor appears to then draw down to 32 to 35 psi and stop, the pressure then cycles up again to 45 psi. All in the matter of a few seconds, less than a minute.
Submitted: 1 year ago.
Category: Appliance
Expert:  Randy 43 replied 1 year ago.

hi , did you check the frost pattern on the evaporator ? vacuum condenser means long run time basically , if condenser is clean and condenser fan is running , remove the rear cover and if you only have a sliver of frost on the evaporator ,then its a leak in the evaporator itself ,i wouldnt trust the pressures..that symptom is a leak most of the time