55 Lift Down Coil Fault

What does 55 mean?

A fault has been detected in the lift down coil, indicating an electrical issue with the solenoid responsible for lowering the platform. This disables both lifting and driving functions.

• Lift down coil open circuit, short circuit, or high resistance.
• Damaged wiring or loose connections to the lift down coil.
• Control circuit failure attempting to activate the coil.

Click steps to track your progress.

1. 1

   Verify the nominal supply voltage at the terminals connected to the lift down solenoid coil.

2. 2

   Inspect the wiring harness and connectors leading to the lift down solenoid coil for any visible damage, chafing, or loose connections.

3. 3

   Measure the resistance of the lift down solenoid coil (with power disconnected) and compare it against the specified value in the Kone Kone service manual.

4. 4

   Check the output status and voltage from the Kone Kone Elevator Control unit's relevant output terminal to ensure it is commanding the lift down solenoid correctly.

5. 5

   Inspect the mechanical plunger and linkage of the lift down solenoid for free movement and any obstructions that could prevent its proper operation.