17
EN
Attachment I: Error description negative pressure - frequency control:
Practice personnel / technician
Fault code
Type of faults
Possible fault reasons
OC/ OC1
Overcurrent
Start-up time too short
Short circuit on the output
Blocked motor
Incorrect parameter calibration
O.L1
Inverter overload
Load too heavy
O.L2
Motor overloaded
Load too heavy
O.E
DC overvoltage
Mains voltage too high
Load inertia too high
Run-down time too short
PID parameter set incorrectly
PF0
Output phase loss
Motor faulty
Motor cable loose
Inverter faulty
LU
Undervoltage
Mains voltage too low
OH
Excess temperature
Ambient temperature too high
Poor ventilation
Fan damaged
Carrier wave frequency
AErr
Signal error
Analogue signalling line disconnected
Pressure sensor faulty
Err1
Incorrect password
Password entered incorrectly
No password entered
Err2
Incorrect parameter calibration
Incorrect motor parameter
Err5
PID parameter set incorrectly
PID parameter set incorrectly
PCE
PMSM distuning error
Motor parameter measurement is incorrect
Motor is too heavy
GP
Earth leakage
Earth leakage in the motor cable
Motor insulation faulty
Inverter error
