Malfunctions during crane operation
14.4 Troubleshooting
Operating manual 3 302 819 en 14 - 25
GMK3060
13.12.2018
14.4.14 Malfunctions on the CCS/RCL control units
14.4.15 Malfunctions when driving from the crane cab
If this table does not help to remedy the malfunction;
à Malfunctions in the transmission, p. 8 - 22,
à Differential lock malfunctions, p. 8 - 21,
à Steering malfunctions, p. 8 - 23.
Malfunction Cause Solution
Control unit not working Power supply not switched on Switching the ignition on
Fuses have blown Replace blown fuses;
à p. 14 - 71
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
Malfunction Cause Solution
The transmission, the differ-
ential locks and the sepa-
rate steering do not respond
to the operating elements –
symbols grey
Parking brake applied Release the parking brake;
à p. 13 - 14
Ignition key in driver's cab not in
position 1
Turn the ignition key in the
driver's cab to position 1;
à p. 13 - 14
Button for separate steer-
ing has no function
Separate steering switched off
à Switching on separate
steering, p. 13 - 9
Symbol for error appears
during differential locking
An illogical switching state was
recorded
If required, acknowledge
error message once and
briefly switch off the ignition –
it if occurs again, notify
Manitowoc Crane Care
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