Fault Phenomenon: Konecranes CXT electric hoist pressing the up/down button has no response, contactor does not engage.

Troubleshooting Process:
– Checked emergency stop button: reset.
– Checked limit switch: upper limit switch mistakenly activated and stuck.
– Manually reset and adjusted limit switch stop block position.

Root Cause: The upper limit switch was prematurely triggered, cutting off the control circuit.

Required Parts: None (requires adjustment).