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dd: Wrong Connection of Communication Wire or Malfunction of EEV


Step 1: Check for Crossed Wiring

  • Inspect the communication wire for any signs of incorrect connections or crossed wiring.

  • Verify that the communication wire is properly connected according to the system specifications.

  • Check for any visible damage or anomalies in the communication wiring.

Step 2: Check the Stepper Motor

  • Inspect the stepper motor associated with the Electronic Expansion Valve (EEV).

  • Verify the wiring and connections to the stepper motor.

  • Check for any visible damage or irregularities in the stepper motor.

  • Ensure that the stepper motor is operating correctly and responding to commands.

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