Chapter 8 Trouble shooting
For the troubleshooting of the inverter, refer to the inverter instruction manual. In this section,
the troubleshooting of the operator will be described.
1. No data appears on the screen.
The inverter power
supply is ON.
The cable is connected
properly to both the
inverter and the remote
operator.
The cable is not broken
The operator is
defective
Turn ON the inverter
power supply.
Connect the cable
properly and turn ON
the power supply.
Replace the cable.
YES
YES
YES
NO
NO
NO
Set the operating
mode , refer to 6
chapter
The setting data is corr-
NO
YES
The setting data is corr-
ect to the inverter
2. Key operations are ignored.
The inverter operation is
normal.
The cable is connected
properly to the connector.
The cable is not broken.
Operator does not accept
a order, even though key is
pressed several times.
Reset the inverter.
Connect the cable
properly, then turn ON the
inverter power supply.
Replace the cable.
The operator is defective.
YES
NO
YES
NO
YES
NO
YES
3. If the operator/inverter screen becomes dark or characters cannot be identified,
inductive noise may be entered from the cable. Separate the remote operator cable
more than 15 cm from other cables. To reset the disturbed screen, turn ON any keys of
remote operator. If the same symptom appears again, turn OFF the inverter power
supply or reset the terminal reset signal.