Fault Phenomenon: Manitou 230ETJ telescopic boom aerial work platform after continuous operation, the drive motor overheating alarm sounds, vehicle cannot move.

Troubleshooting Process:
– Checked cooling air duct: duct blocked.
– Checked motor fan: fan not spinning.
– Checked current: excessive current (mechanical binding).
– Checked temperature sensor: sensor false alarm.

Root Cause: The motor cooling fan is faulty or the air duct is blocked by debris.

Required Parts: Motor cooling fan or duct cleaning.