Malfunctions during crane operation
14.4 Finding and eliminating malfunctions
Operating Instructions GMK5250L 3 302 633 en 14 - 23
27.09.2017
14.4.14 Malfunctions on the CCS/RCL control units
14.4.15 Malfunctions on the CraneSTAR system
If an error is present, then check the fuses.
Fuses
• Loosen the bolts (2) and remove the
cover (1).
• Check the associated fuse on the plate (3)
and replace it if necessary:
à Fuses in the
crane cab
, p. 14 - 63.
• Loosen the screws (4) and fold down the
plate (3) to the front.
Malfunction Cause Remedy
Control unit not working Power supply not switched on Switch on the ignition
Fuse F1/4 blown Replace blown fuses;
à p. 14 - 63
Display is dark – LED flashes
blue
Ambient temperature too low Heat the crane cab
Display is dark – LED flashes
yellow
Ambient temperature too
high
Cool the crane cab
Display weak Ambient temperature too
high – brightness is reduced
automatically
The set brightness is restored
after cooling
S
Risk of damage if procedure is incorrect!
Observe the following notes to avoid malfunctions and damage.
– Switch off the ignition whenever a fuse has to be replaced.
– Replace blown fuses only with new fuses of the same amperage.
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