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53 ML1 Open at Floor
If ML1 switch becomes passive [ML1=0] while the car is
staying at floor level this error is created. If the doors are
open then it is an UCM error and the system is blocked.
Check the magnet and switch locations of ML1 and ML2.
Cause
Troubleshooting
1. Check the ML1 pencil switch condition. If needed replace it.
2. Check if the distance from pencil switch to the magnet is long.
3. Check the connections from the main panel to the car top
controller through the flat cable. tighten the plugs.
4. Check if the led on the main PCB for ML1 lit. Check if you have
voltage in 100A of the car top magnetic switches connector.
5. If still not have a feedback of ML1 then check the PCB input
and contact the After sales service department.
TIP: Check electrical drawings pages 3-12-13.
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