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Home >> Volkswagen >> 2021 >> ID.4 Pro S, AWD >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning >> 87 Air Conditioning >> Front Heater And A/C Unit >> Heating And A/C Unit, Removing And Installing, R744 >> Heater And A/C Unit, Removing And Installing >> Installing
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Heater And A/C Unit, Removing And Installing: Installing

Install in the reverse order of removal while noting the following:

If refrigerant circuit components were replaced:

-- Perform the adaptation of the refrigerant oil quantity in the refrigerant circuit. Refer to COMPONENTS, REPLACING .

Continuation

-- Pay attention to the correct seating of the condensation water drain. Refer to Condensation Water Drain, Removing and Installing  .

-- Inspect the attachment points for the potential equalization cable and clean if necessary. Refer to the appropriate service information .

GWWN87-12467Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Conditions

-- Connect the potential equalization cable and tighten the nut -8-.

-- Connect the connectors.

-- Install the seals and loss protection devices without oil.

-- Install the heater and A/C unit air intake housing. Refer to Heater and A/C Unit Air Intake Housing, Removing and Installing  .

-- Perform the "open the electric activated valves for the refrigerant circuit for extracting, evacuating and filling" with Vehicle Diagnostic Tester . Refer to Diagnostic Entries .

-- Refer to REFRIGERANT CIRCUIT, CHARGING .

CAUTION:

There is a risk of fatal injury due to high voltage.

Electrocution by direct contact or electric arc can cause severe bodily injury or fatal injury.

- Have a high-voltage technician or a high-voltage expert bring the high-voltage system back into service.

-- Refer to [For engine(s) EBRA] High-Voltage System, Re-Energizing .