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C 4.74
Operating instructions
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Troubleshooting guide
Problems in the working hydraulic system
The diagnostic unit OPUS and PC software are available
as options with which further troubleshooting/diagnosis/ad-
justment of the electronics in the working hydraulic system
is possible.
NOTE
These notes only apply for valve arrange-
ments conforming to our circuit diagrams or
approved by Bucher Hydraulics.
Problem Cause Remedy
All hydraulic functions not active Control unit (box) without power
Connector or cable set defective
Control unit defective,
watch flashing code of LED on box
Turn on main switch (toggle switch)
Repair or replace connectors, cables
Replace
Individual functions not active Function disabled
Connectors or cables damaged
Solenoid or valve defective
Enable with Opus or PC software, also
see operating instructions.
Repair or replace
Repair or replace