Error
code Error name Possible reason
Solution
CPUC
I/O board trap error
CPU fatal error on I/O board
● Check the wiring of control cir‐
cuit, main circuit and ground to
find out the source of interfer‐
ence
● If it happens again, replace the
frequency converter
CPUE
Removable
panel trap error
CPU fatal on operating panel
● Check the wiring of control cir‐
cuit, main circuit and ground to
find out the source of interfer‐
ence
● If it happens again, replace the
frequency converter
CE3-
SPI problem between removable
panel board and I/O board
Problem with operating panel
● Check the wiring of control cir‐
cuit, main circuit and ground to
find out the source of interfer‐
ence
● If it happens again, replace the
operating panel or the frequen‐
cy converter
CE4-
Internal problem on
operating panel
Problem with operating panel
● Check the wiring of control cir‐
cuit, main circuit and ground to
find out the source of interfer‐
ence
● If it happens again, replace the
operating panel or the frequen‐
cy converter
FFE-
Firmware does
not match
operating panel may be
placed to the frequency con‐
verter with older/newer firm‐
ware
Contact with technical service
I/O board may be removed to
anther device
Contact with technical service
DOK-RCON03-EFC-3600***-IT01-EN-P
Rexroth Frequency Converter EFC 3600
Bosch Rexroth AG
Diagnosis
135/235
Summary of Contents for Rexroth EFC 3600
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