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10 Troubleshooting
LED
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11 Maintenance, repair, disposal
11.1 Maintenance
The unit is maintenance-free�
11.2 Cleaning the housing surface
► Disconnect the device�
► Clean the device from dirt using a soft, chemically untreated and dry cloth�
Micro-fibre cloths without chemical additives are recommended�
11.3 Repair
► The device must only be repaired by the manufacturer�
Observe the safety instructions�
11.4 Disposal
► Dispose of the device in accordance with the national environmental regulati-
ons�
Error
Sensor wire break or wrong
sensor type
Short circuit at sensor supply
Short circuit at transistor output
Internal device error
on
Troubleshooting
Check sensors and their
connections
Remove short circuit
Remove short circuit
Contact service
flashing
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