2026-03-27

Compressor, Supermanifold and Compressor to Supermanifold A/C Line (Reuse Supermanifold to HVAC A/C line) (Remove and Replace)

Correction code 18204012 2.40 NOTE: Unless otherwise explicitly stated in the procedure, the above correction code and FRT reflect all of the work required to perform this procedure, including the linked procedures. Do not stack correction codes unless explicitly told to do so. NOTE: See Flat Rate Times to learn more about FRTs and how they are created. NOTE: See Personal Protection to make sure proper PPE is worn when performing the below procedure.

  • 2026-03-25: Revised procedure to eliminate oil adjustment and added flush procedure to reuse the existing supermanifold to HVAC A/C line and HVAC assembly.
  • 2025-03-31: Added note on separately adding correction code 18200102 for refrigerant recovery/recharge.
Equipment:
  • 1600279-00-A A/C Oil Flush Adapter Set or 1600279-N0-BHEAT PUMP VEHICLE A/C FLUSHING FOR UNKNOWN OIL CONDITIONS
  • 1838504-C0-A, 1838504-E0-A, 1838504-N0-A Debris Flush Adapter
  • 1711245-00-A - Snap On Ecotechnics Dual Gas A/C Machine, includes Flush Adapter Kit R134A & R1234YF or
  • 1120026-01-A A/C SERVICE MACHINE, WAECO, ASC5500 RPA
Informational PurposesAn informational icon, calling your attention
Note
This procedure requires the A/C Refrigerant (Recovery and Recharge) procedure to be performed. If not already automatically added to the Service Visit, add correction code 18200102 as a separate activity to the Service Visit.
Informational PurposesAn informational icon, calling your attention
Note
This is the procedure to replace the supermanifold, compressor and supermanifold to compressor A/C line, using the Heat Pump HVAC Debris Flush Adapter 1838504-C0-A, 1838504-E0-A or 1838504-N0-A. By flushing the supermanifold to HVAC A/C line and the HVAC assembly, the supermanifold to HVAC A/C line and the HVAC assembly can be reused. This procedure is used when the compressor failed due to a mechanical issue which lead to debris in the A/C system.If the Debris Flush Adapter 1838504-00-B is available, use the procedure described in A/C Compressor and Supermanifold (Remove and Replace).

Remove

  1. Enable Service Mode. See Service Mode (Enable and Disable)
  2. Check the thermal alerts via the touchscreen by pressing the alert icon.
    If one or more of the following alerts are present, perform a full flush later in the procedure.
    • VCFRONT_a161_compressorSelfFault
    • VCFRONT_a163_compressorDisabledFSR
    • VCFRONT_a460_hardIsentropicTdFailed
    • VCFRONT_a467_lowPowerIndexFlagged
    • VCFRONT_a531_lowPowerIndexFlaggedUserFacing
    • VCFRONT_a543_compressorLowFlowDeliveryDetected
    If none of the alerts listed above are present, perform a fast flush later in the procedure.
  3. Remove the A/C compressor. See A/C Compressor (Remove and Replace).
  4. Remove the supermanifold. See Supermanifold (Remove and Replace).
  5. Install the supermanifold to HVAC A/C line to the HVAC assembly.
    22 Nm (16.2 lbs-ft)
  6. Flush the Supermanifold to HVAC A/C line and the HVAC assembly. See Flush HVAC system using the Snap-On A/C Machine or Flush HVAC system using the Waeco A/C Machine

Flush HVAC system using the Snap-On A/C Machine

  1. Install the flush adapter (1838504-C0-A, 1838504-E0-A, or 1838504-N0-A) to the Supermanifold to HVAC A/C line.
    Informational PurposesAn informational icon, calling your attention
    Note
    1x nut, 13mm, 36 Nm
  2. Connect the HVAC case flush adapter to the A/C machine.
    Informational PurposesAn informational icon, calling your attention
    Note
    Connect the red pressure line to the left side of the adapter, bolt the blue line coming from the flush kit to the right side of the adapter.
  3. Connect Snap on A/C machine hoses to the A/C flush adapters and run the flush procedure by selecting Menu > > Num 4 > OK > OK.
    Informational PurposesAn informational icon, calling your attention
    Note
    The flush procedure runs for approximately 90 minutes, a minimum of 3.2 kg of refrigerant is needed in the tank to run the system flush procedure.
  4. After flushing is complete, disconnect the flush adapter from the A/C machine.
  5. Remove the flush adapter from the vehicle supermanifold to HVAC A/C line.
    Informational PurposesAn informational icon, calling your attention
    Note
    1x nut, 13mm, 36 Nm
  6. Remove the supermanifold to HVAC A/C line from the HVAC assembly.
  7. Install new seal washers to the existing supermanifold to HVAC A/C line at the supermanifold and HVAC side.
    Informational PurposesAn informational icon, calling your attention
    Note
    1111740-00-A WASHER,3/4,STEEL ZN,SEAL (x2), 1111738-00-A WASHER,1/2,STEEL ZN,SEAL (x2), 1111737-00-A WASHER, 3/8, STL ZN, SEAL (x6).
  8. Install the supermanifold to HVAC A/C line assembly to the supermanifold and install the nut hand tight.
  9. Disconnect the low pressure hose from the A/C machine to the quick connector of the filter.

Flush HVAC system using the Waeco A/C Machine

  1. Install the flush adapter (1838504-C0-A, 1838504-E0-A, or 1838504-N0-A) to the Supermanifold to HVAC A/C line.
    Informational PurposesAn informational icon, calling your attention
    Note
    1x nut, 13mm, 36 Nm
  2. Set up flush kit to the A/C machine.
    Informational PurposesAn informational icon, calling your attention
    Note
    Attach the flush kit to the Waeco A/C machine. 2x bolts, 8mm, 1x Nyloc nut.
  3. Inspect the liquid line filter drier marking.
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    Note
    Mark the filter before every flush with paint marker, replace the filter after 10 flushes.
    Informational PurposesAn informational icon, calling your attention
    Note
    If replacement of the filter is not yet necessary, go to step #TASK_FLUSH__GUID-3C3235D2-1FCE-476D-A030-E3B40F3423D5.
  4. Remove the liquid inline filter drier
    Informational PurposesAn informational icon, calling your attention
    Note
    Remove the filter from the container (the grey filter attached to the flush unit) PR052FM, Good to re-use copper o-ring, use hand force no tools
  5. Replace the liquid inline filter drier (the grey filter attached to the flush unit) PR052FM
    Informational PurposesAn informational icon, calling your attention
    Note
    1x new filter, 2x new copper sealing rings, Wear appropriate PPE, Swap the nipple from old to new filter, Install copper sealing ring between connections, Do not over tighten, hand tight, due to copper line Ensure old sealing was removed before installing new filter, use pick tool to remove copper ring if needed
  6. Connect the low pressure hose from the A/C machine to the quick connector of the filter
  7. Connect the HVAC case flush adapter to A/C machine
    Informational PurposesAn informational icon, calling your attention
    Note
    Connect the red pressure line to the left side of the adapter, bolt the blue line coming from the flush kit to the right side of the adapter
  8. Connect the A/C machine hoses to the A/C flush adapter and flush the HVAC case and supermanifold to HVAC A/C line.
    Informational PurposesAn informational icon, calling your attention
    Note
    If one or more of the alerts mentioned in step 2 of the 'Remove' section are present, choose Full flushing. If no alerts are present, choose Fast flushing.
    Informational PurposesAn informational icon, calling your attention
    Note
    Fast flush procedure runs for approximately 40 minutes. If one of the Illustrated alerts are present, run full flush. This takes around 1 hours and 40 minutes. Must use A/C Service Machine WAECO ASC 5500G RPA R1234YF. A minimum of 6 kg of refrigerant is needed in the tank to run the system flush procedure. Press Enter => Other Selections => Enter => Flushing => Enter => Enter => Enter =>=> Full Flushing => Enter
  9. After flushing is complete, disconnect the flush adapter from the A/C machine.
  10. Remove the flush adapter from the vehicle supermanifold to HVAC A/C line.
    Informational PurposesAn informational icon, calling your attention
    Note
    1x nut, 13mm, 36 Nm
  11. Remove the supermanifold to HVAC A/C line from the HVAC assembly.
  12. Install new seal washers to the existing supermanifold to HVAC A/C line at the supermanifold and HVAC side.
    Informational PurposesAn informational icon, calling your attention
    Note
    1111740-00-A WASHER,3/4,STEEL ZN,SEAL (x2), 1111738-00-A WASHER,1/2,STEEL ZN,SEAL (x2), 1111737-00-A WASHER, 3/8, STL ZN, SEAL (x6).
  13. Install the supermanifold to HVAC A/C line assembly to the supermanifold and install the nut hand tight.
  14. Disconnect the low pressure hose from the A/C machine to the quick connector of the filter.