Fault Phenomenon: Lonking CDD12 electric stacker lift height cannot reach maximum, stops midway, and the motor makes a dull sound.

Troubleshooting Process:
– Checked battery charge: sufficient.
– Checked lift limit switch: switch activates prematurely.
– Checked hydraulic power unit: pressure normal.
– Checked chains: chain tension normal.

Root Cause: The lift height limit switch position is offset or has failed, triggering protection prematurely.

Required Parts: Lift limit switch.