Trouble Shooting
Code Possibility Trouble shooting
OC Inverter detects the electricity is
abnormal
1. Check if the electricity for the
motor and for the inverter is
compatible.
2. Check if U-V-W of the inverter
is short
3. Check if the connection of the
motor is short or connecting to
the ground
4. Check if the screws of the
inverter and of the motor are
loose.
5. Extending the speedy time
6. Check if the motor is
overloading
OU Inverter detects the electricity is
too high
1. Check if the input electricity is
under the normal value and
inspect if there is any
additional electricity occurred.
2. If the motor resumes the
electricity higher and results in
the inner electricity of the
inverter is too high, the
decelerating time can be longer
or install a resistor (optional).
OH Inverter detects the inner
temperature is too high
1. Check if the temperature of the
environment is too high
2. Check if there is something
attached on the radiator and
check if the fan works
3. Check if the ventilator space of
the inverter is enough
LO Inverter detects the electricity is
too low
1. check if the input voltage is
normal.
2. check if there is a sudden
overload.
3. check if 3 phase is wrongly
input from 1 phase
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