HEX: 12 - W-bus communication failure

Fault Details:

  • W-Bus communication failure.

Recommended Solution:

  1. Check the W-Bus communication lines, control elements, and Telestart.

  2. Ensure the correct plug is used:

    • Telestart plug for digital controllers

    • Potentiometer plug for manual control/rheostat

  3. If the issue persists, replace the ECU (control unit).


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