Fault Phenomenon: Oil&Steel 3018 electric scissor lift aerial work platform after starting, the drive wheel brakes do not release, the motor strains.

Troubleshooting Process:
– Checked brake voltage: no voltage output.
– Checked brake coil: coil open circuit.
– Checked mechanical clearance: clearance too small, causing seizure.
– Checked controller: no brake release signal output.

Root Cause: The brake release coil is open circuit or the controller has no output.

Required Parts: Brake coil or controller.