Lenze 8240 HVAC Series - Manual (Page 80)

Troubleshooting and fault elimination
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Display Remedy Cause Fault
OV Overvoltage Mains voltage too high Check voltage supply g
Feedback operation
Braking operation
D
Increase deceleration times.
D
For operation with brake choppers:
- Check the selection and connection of the
brake resistor
- Increase the deceleration times
Earth leakage on the motor side Check motor cable and motor for earth fault
(disconnect motor from inverter)
Pr Faulty parameter transfer
via the operating module
PAR1 and PAR2 are defective. It is absolutely necessary to repeat the data
transfer or load the factory setting before
bli th t ll
Pr1 Faulty PAR1 transfer via the
operating module
PAR1 is defective.
y g
enabling the controller.
Pr2 Faulty PAR2 transfer via the
operating module
PAR2 is defective.
rSt Faulty auto-TRIP reset More than 8 fault messages in 10
minutes
Depends on the fault message
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