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

🧭 Before you start

Fits: Audi Q7 (4M, 2015–)

• Opens: refrigerant (A/C)

📋 Procedure

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

6. Remove evaporator (D) from evaporator housing (A)Exploded view - evaporator housing.
7. Check evaporator housing (A) for dirt, paying special attention to the condensation drain ducts (C) and the evaporator (D) itself.
8. Attach evaporator housing (A) to air distribution box (B) on front heater and air conditioning unit Attaching and detaching the evaporator housing on the front heater and air conditioning unit.
9. Perform basic setting and final control diagnosis for the air conditioner in "“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 activated by the front air conditioner operating and display unit E87 (all control motors are identical at present) in "“Guided Fault Finding”" mode.While you are performing the 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 control motors will not be adapted properly and the flaps will not be controlled correctly Overview of control motors of air conditioner.]
10. Start up air conditioner after charging refrigerant circuit Starting up air conditioner after charging refrigerant circuit. [Note: Also observe notes on starting up air conditioner after charging Air conditioner with refrigerant R134a87General notes on air conditioning systems.]

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