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Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning (Refrigerant R1234YF Servicing) (2 Of 2) >> 87 Air Conditioning >> Refrigerant Circuit >> Refrigerant Circuit, Cleaning >> Connection Diagram For Cleaning (Flushing), Vehicles With High-Voltage System (With Additional A/C System Functions Such As Heat Pump Operation)

Connection Diagram For Cleaning (Flushing), Vehicles With High-Voltage System (With Additional A/C System Functions Such As Heat Pump Operation)

NOTE:

The refrigerant circuit is cleaned in multiple flushing cycles. Refer to ADAPTER FOR ASSEMBLING FLUSHING CIRCUIT  and Refrigerant Circuit (Cleaning the A/C system refrigerant circuit).

To flush, the circuit is divided into multiple sections and then cleaned during one flushing cycle at a time. It is divided by activating the installed electrically activated valves and using the installed manual shut-off valves. Refer to Refrigerant Circuit (Cleaning the A/C system refrigerant circuit).

The design of the different flushing circuits for these vehicles is described in the respective vehicle-specific Service Information. Refer to Refrigerant Circuit (Cleaning the A/C system refrigerant circuit). Refer to CONNECTION DIAGRAM FOR CLEANING (FLUSHING), REFRIGERANT CIRCUIT WITH EXPANSION VALVE AND RECEIVER/DRYER .