Mitsubishi Electric FR-F820-04750 Instruction Manual page 750

Causes and corrective actions
Operation panel
indication
Name
Description
Check point
Corrective action
NOTES If protective functions with indication of "Fault" are activated when using the FR-PU07, "ERR"
appears in the faults history of FR-PU07.
If faults other than the above appear, contact your sales representative.
6 - 30
E. 1 to E. 3
Option fault
The inverter trips when a contact fault is found between the inverter and the plug-in option, or
when the communication option is not connected to the connector 1.
Appears when the switch for manufacturer setting of the plug-in option is changed.
Check that the plug-in option is plugged into the connector properly.
(1 to 3 indicate connector numbers for connection of options.)
Check for excessive noise around the inverter.
Check if the communication option is connected to the connector 2 or 3.
Connect the plug-in option securely.
Take measures against noises if there are devices producing excess electrical noises around
the inverter.
If the situation does not improve after taking the above measure, please contact your sales
representative.
Connect the communication option to the connector 1.
Set the switch on the plug-in option, which is for manufacturer setting, back to the initial
setting. (Refer to the Instruction Manual of each option.)
to FR-LU08
Protective functions
Fault 1 to Fault 3