ERR27 after pressing the horn button

• Fault Causes:

  
  

  ​1.Horn wiring short circuit

  ​2.Horn failure

  
  

  Troubleshooting Methods:

  Turn off the Stacker and disconnect horn wiring harness.

  Power on the Stacker and press horn button.

  ​If ERR27 persists: Confirmed horn wiring short circuit.

  ​If ERR27 cleared: Horn itself failure (replace horn).

  
  

  Warranty Period:

  One year (not applicable for human - caused damages such as water ingress or collisions).