Improper HI Configuration CGAF

Issue:

Improper HI configuration diagnostic and cannot access any of the menus or keys

Resolution:

Chiller Troubleshooting Process

1. Preliminary Checks

• Objective: Ensure all wiring is secure and properly connected.
• Actions:
  • Inspect all wiring on the communication link.
  • Verify that all connections are tight and properly landed.

2. Power Down the Chiller

• Objective: Safely prepare the chiller for module inspection.
• Actions:
  • Power down the chiller completely.

3. Disconnect J1 Connectors

• Objective: Isolate the issue by testing individual modules.
• Actions:
  • Disconnect all J1 connectors from each module, except for the CGM (Chiller Gateway Module) and HI (Human Interface).
  • Ensure that only the CGM and HI remain connected at the J1 connector.

4. Re-power the Chiller

• Objective: Determine if the initial diagnostic issue persists.
• Actions:
  • Re-power the chiller.
  • Observe if the diagnostic issue goes away.
    • If the diagnostic issue persists: Proceed to Step 6.
    • If the diagnostic issue resolves: Proceed to Step 5.

5. Reconnect Remaining Modules

• Objective: Identify the faulty module.
• Actions:
  • Begin re-plugging the J1 connector of the remaining modules one at a time.
  • Allow approximately 30 seconds between each reconnection.
  • Monitor for the reappearance of the diagnostic issue.
    • If the issue reappears: The last module reconnected is likely faulty.
    • If the issue does not reappear: Continue reconnecting until all modules are tested.

6. Replace the CGM

• Objective: Resolve the issue if it persists with only the CGM and HI connected.
• Actions:
  • If the initial problem does not go away with only the HI and CGM connected, replace the CGM.

Facts:

• INTELLIPAK CHILLER 20-60
• Air-Cooled Chiller - Intellipak (CGAF)