Malfunctions during crane operation
14.4 Troubleshooting
14 - 16 3 302 819 en Operating manual
GMK3060
13.12.2018
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 - 62
Control unit fuse blown Replace blown fuse;
à p. 14 - 71.
Lifting, lowering or
high-speed mode
function not working
Function disabled by CCS If required, acknowledge
error message once and
briefly switch off the ignition
– it if occurs again, notify
Manitowoc Crane Care
No lifting function Control unit fuse blown Replace blown fuse;
à p. 14 - 71.
Lifting or lowering is
either not possible at all
or only at a low speed
Speed limited Increase the limit;
à p. 11 - 131.
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