Chapter 7 Troubleshooting
GK600 User Manual
- 240 -
Fault
code
Fault
display
Fault description
Causes
Solutions
13
ISF
Input power
supply
abnormal
Severe voltage
imbalance among
power supply phases
Check power grid voltage
Abnormal input wiring
of power supply
Check power supply input
wiring
Abnormal bus
capacitance
Seek services
14
oPL
Output phase
loss
Motor cable
connection abnormal
Check motor connection
Imbalance among
motor three phases
Check or replace the
motor
Incorrect setting of
vector control
parameters
Correctly set vector control
parameters
15
oL3
Inverter module
overload
protection
Overcurrent
Handle it with the methods
for overcurrent
Input power supply
abnormal
Check input power grid
voltage
Motor output abnormal
Check the motor or motor
connection
Inverter module
abnormal
Seek services
16
oH1
Module (IGBT)
thermal
protection
Ambient temperature
is too high
Drop ambient temperature
Fan failed
Replace the fan
Air duct blocked
Clear air duct
Temperature sensor
abnormal
Seek services
Inverter module
mounting
abnormal
Seek services
17
oH2
Motor (PTC)
thermal
protection
Ambient temperature
is too high
Drop ambient temperature
Improper setting of
motor thermal
protection point
Correctly set motor
thermal protection point
Thermal detection
circuit failed
Seek services
