4.2 Troubleshooting Table
Indicator Status Possible cause of fault Remedy
Undervoltage Mains voltage too low
Voltage switch in 230 V
AC position and
equipment is being
operated with 115 V AC
Switch off the equipment!
Set the correct voltage
on the voltage switch
Phase interruption Interruption of one or
more wires of the motor
cable
Motor faulty
Switch off the equipment!
Check motor cable and
correct the fault
Replace motor
Short-circuit Short-circuit in plug,
cable, motor or power
stage
Switch off the equipment!
Eliminate the short-circuit
Excessive temperature
(power unit)
Poor ventilation of the
power unit
Motor current too high
Boost the forced
ventilation
Reduce the motor current
Reset ENABLE input is inactive Activate ENABLE input
Errors / Faults
4 – 2 WS5-5 Doc. no. 211.347/DGB 12.92