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Advanced troubleshooting, Evaporator coil is freezing, High pressure switch keeps tripping – Vintage Cellars Wine Guardian Split System Manual User Manual

Page 66: Unit cycles on and off more than 8 times/hr, Replacing the blowers

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Advanced Troubleshooting

Evaporator Coil is Freezing


Possible Cause Solution

Charge too low Check sight glass

Check for leaks

Add refrigerant

TXV malfunctioning Repair or replace

High pressure switch keeps tripping
even after checking for obstructions and dirty filters/coils

Possible Cause Solution

Condenser fan not operating Repair or replace

Defective switch Replace

Unit cycles on and off more than 8 times/hr

Possible Cause Solution

Remote interface controller malfunction Check the remote interface controller guide for
remote interface controller information

Low suction pressure Check low pressure switch

Check pressure and adjust superheat

High pitched or loud rubbing noise, clanking or vibration

Possible Cause Solution

Fans loose or malfunctioning Repair or replace

Excessive compressor vibration Replace

TXV malfunctioning Repair or replace

Replacing the blowers

When replacing the fan or motor, replace the fan and motor as a unit. Do

not remove the motor from the impeller wheel.

IMPORTANT

This section is intended for qualified refrigeration service technicians only.

The technician should repeat all of the previous troubleshooting steps before

taking action on these more technical solutions.