Malfunctions during crane operation
14.4 Troubleshooting
14 - 16 3 302 709 en Operating manual
GMK5150L
12.01.2018
Only the lowering
function works
Lifting limit switch
approached, lamp lights up
Leave the shutdown range
and lower the hoist.
RCL shutdown, lamp lights
up
Leave the shutdown range;
à p. 11 - 58
Control unit fuse blown Replace the blown fuse;
à p. 14 - 75
Lifting, lowering or
high-speed mode
function not working
Function disabled by CCS If required, acknowledge
error message once and
briefly turn off the ignition –
it if occurs again, notify
Manitowoc Crane Care
No lift function Control unit fuse blown Replace the blown fuse;
à p. 14 - 75
Lifting or lowering is
either not possible at all
or only at a low speed
Speed limited Increase limit;
à p. 11 - 125
Lifting or lowering
function cannot be
switched off
CCS malfunction Emergency stop switch;
à p. 14 - 1
No response to control
lever movements
CCS malfunction for
operating elements in
the crane cab
Unrig using hand-held
control;
à p. 14 - 43
Malfunction Cause Solution