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Home >> Audi >> 2020 >> SQ8 Premium Plus >> Repair and Diagnosis >> External Pages >> Different car >> Section 205 (Air Conditioning (Heating, Ventilation And Air Conditioning) (Refrigerant Circuit - Actuators)) >> 87 Air Conditioning >> Heat Pump Valve Unit >> Heat Pump Valve Unit, Disassembling And Assembling >> Heat Pump Valve Unit, Disassembling and Assembling

Heat Pump Valve Unit, Disassembling and Assembling

WARNING: This page is about a different car, the 2024 Audi SQ7, 2024 Audi Q7, 2023 Audi SQ7, and 2023 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Exploded View Of Heat Pump Valve Unit, Disassembling and Assembling
GWWA87-12194Courtesy of AUDI OF AMERICA, LLC
  1. Wiring Harness Bracket
  2. Valve Block Wiring Harness
    • Label the routing before removal
    • Pay attention to the correct connector assignment for the connectors to the valves. Refer to Wiring Harness on Valve Block, Connection Diagram .
    • The valve block valves are currently identical in construction. They are assigned through the connector assignment for the wiring harness connectors and are activated accordingly by the Thermal Management Control Module -J1024-. Refer to Wiring Diagram.
  3. Refrigerant Shut-Off Valve 2 -N640-
    • Mark before removal for allocation later
    • The valve block valves are currently identical in construction. They are assigned through the connector assignment for the wiring harness connectors and are activated accordingly by the Thermal Management Control Module -J1024-. Refer to Wiring Diagram.
  4. Bolt
    • 9 Nm
  5. Outer Connection Block
  6. Seal
    • Replace after removing. Refer to the Parts Information for the version.
  7. Plug
    • Replace after removing. Refer to the Parts Information for the version.
    • 22 Nm
  8. Alignment Pin with Threads
    • Check for the correct installation position
    • 4 Nm
  9. O-Ring
    • Replace after removing; version. Refer to REFRIGERANT CIRCUIT SEALS and the Parts Information.
    • Lubricate lightly with refrigerant oil before installing
  10. O-Ring
    • Replace after removing; version. Refer to REFRIGERANT CIRCUIT SEALS and the Parts Information.
    • Lubricate lightly with refrigerant oil before installing
  11. Bolt
    • 9 Nm
  12. Refrigerant Shut-Off Valve 4 -N642-
    • Mark before removal for allocation later
    • The valve block valves are currently identical in construction. They are assigned through the connector assignment for the wiring harness connectors and are activated accordingly by the Thermal Management Control Module -J1024-. Refer to Wiring Diagram.
  13. Inner Connection Block
  14. Refrigerant Shut-Off Valve 5 -N643-
    • Mark before removal for allocation later
    • The valve block valves are currently identical in construction. They are assigned through the connector assignment for the wiring harness connectors and are activated accordingly by the Thermal Management Control Module -J1024-. Refer to Wiring Diagram.
  15. Refrigerant Shut-Off Valve 3 -N641-
    • Mark before removal for allocation later
    • The valve block valves are currently identical in construction. They are assigned through the connector assignment for the wiring harness connectors and are activated accordingly by the Thermal Management Control Module -J1024-. Refer to Wiring Diagram.
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