Malfunctions On The Ccs/Rcl Control Units; Malfunctions When Driving From The Crane Cab - Manitowoc Grove GMK4100L-1 Operating Manual

14.4.16
Malfunction
Control unit not working
Display is dark – LED flashes
blue
Display is dark – LED flashes
yellow
Display weak
14.4.17
Malfunction
The transmission, the dif-
ferential locks and the
separate steering do not
respond to the operating
elements – symbols grey
Button for separate steer-
ing has no function
Error symbol is displayed
with differential locks or
separate steering
Operating manual
GMK4100L-1

Malfunctions on the CCS/RCL control units

Power supply not switched on
Fuse F1/4 blown
Ambient temperature too low
Ambient temperature too
high
Ambient temperature too
high – brightness is reduced
automatically

Malfunctions when driving from the crane cab

Parking brake applied
Ignition key in driver's cab not
in position 1
Separate steering switched
off
An illogical switching state
was recorded
If this table does not help to remedy the malfunction;
à
Malfunctions in the transmission , p. 8 - 23,
à
Differential lock malfunctions , p. 8 - 22,
à
Malfunctions of the steering , p. 8 - 24.
Cause
Cause
3 302 690 en
Malfunctions during crane operation
14.4 Troubleshooting
Solution
Switch the ignition on
Replace blown fuses;
à
p. 14 - 73
Heat the crane cab
Cool the crane cab
The set brightness is restored
after cooling
Solution
Releasing the parking
à
brake; p. 13 - 18
Turn the ignition key in
the driver's cab to posi-
à
tion 1; p. 13 - 18
à
Switching on separate
steering , p. 13 - 13
If required, acknowledge
error message once and
briefly turn off the ignition
– it if occurs again, notify
Manitowoc Crane Care
14 - 23