Removing and installing evaporator in heater and air conditioning unit — AUDI

🧭 Before you start

Fits: Audi A4 B9 (8W, 2015–)

• Opens: refrigerant (A/C)

📋 Procedure

1. Switch off the ignition.
2. Drain the refrigerant circuit Air conditioner with refrigerant R134a87Refrigerant circuit.
3. Remove the front heater and air conditioning unit Removing and installing heater and air conditioning unit.
4. Detach the air intake box from the heater and air conditioning unit Detaching air intake box from heater and air conditioning unit/attaching.
5. Detach the evaporator housing (A) from the air distribution box (B) of the front heater and air conditioning unit Detaching and attaching evaporator housing of heater and air conditioning unit.

6. Remove the evaporator (D) from the evaporator housing (A)Exploded view - evaporator housing.
7. Check the evaporator housing (A) for dirt, paying particular attention to the ducts for the condensation drain (C) and the actual evaporator (D).
8. Attach the evaporator housing (A) to the air distribution box (B) of the front heater and air conditioning unit Detaching and attaching evaporator housing of heater and air conditioning unit.
9. Perform basic setting and final control diagnosis for the air conditioner "“Guided fault-finding”" mode. [Note: The control motors on this vehicle are equipped with electronics. A new control motor only learns its position at the heater and air conditioning unit in the course of basic setting and can then be actuated by the front air conditioner operating and display unit E87 (all control motors are identical at present) "“Guided fault-finding”" mode.During basic setting, the control motors are assigned and adapted in accordance with the series connection of the wiring. If the sequence is not as specified, the matching of the control motors and thus flap control will not be correct Overview of control motors of air conditioner.]
10. Start up the air conditioner after charging the refrigerant circuit Starting up air conditioner after charging refrigerant circuit. [Note: Also heed the information on start-up of the air conditioner after charging Air conditioner with refrigerant R134a87General information on air conditioner.]

Other AUDI procedures

• Removing and installing toothed belt – Audi · 56 torque figures
• Removing engine – Audi A8 D3 · 41 torque figures
• Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
• Installing engine – Audi A8 D4 · 36 torque figures
• Removing and installing camshaft timing chain · 29 torque figures
• Removing and installing brake pads, floating caliper disc brake FN3
• Removing and installing brake pads, floating caliper disc brake 2FNR 44
• Removing and installing brake pads, brake caliper FN 44
• Removing and installing brake booster MK25
• Removing and installing water tank