volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Heater Core Case > < Expansion Valve and Receiver (With Internally Regulated Compressor), Checking|Page 8636
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NOTE:

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Overfilling with refrigerant oil can occur if, for example, the compressor has been replaced without adjusting the quantity of refrigerant oil.

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If expansion valve is malfunctioning (permanently open), evaporator temperature is no longer regulated such that only refrigerant in gas form exits
from the evaporator. Under certain usage conditions, liquid droplets may then be drawn in by the compressor and cause noise (liquid cannot be
compressed).

Heater Core Case > < Expansion Valve and Receiver (With Internally Regulated Compressor), Checking|Page 8636