Page
E-3
Document 57.0007.0200 - 01/2006
FAULTS AND TROUBLESHOOTING
Handler with telescopic boom
GTH-4013
NO SELECTION OF THE STEERING
MODE
NO BOOM LOWERING AND
EXTENSION, NO HOLDING FRAME
PITCHING
ALARM OF THE OVERLOAD
WARNING SYSTEM
(red LED ON)
THE OVERLOAD WARNING
SYSTEM DOES NOT WORK
BOOM DOES NOT MOVE
NO CHANGE BETWEEN 1st AND 2nd
MECHANICAL GEAR AND VICE
VERSA
THE LOAD LIMITING SYSTEM DOES
NOT CHANGE WORK SCALE
THE LOAD LIMITING SYSTEM IS
BLOCKED
(red LED’s lit)
• "CAB/ROAD/PLATFORM" switch
set to “ROAD”
• "CAB/ROAD/PLATFORM" selector
damaged
• Fuse
F13
blown
• Alarm of the overload warning system
• Fuse
F25
blown
• Fuse
F24
blown
• "CAB/ROAD/PLATFORM" switch
set to “ROAD”
• Fuse
F14
blown
• Relay
K5
• Mechanical gearbox control unit
K24
• Pushbutton
(ref.
13
. C-12)
• Coil
Y8 - Y9
• Outriggers limit switches inefficient
• Low stability
• Select “CAB”
• Check the selactor - reconnect or
replace
• Check the 10A fuse
F13
and replace
if necessary.
• Retract or raise the boom within safe
limits
If the alarm condition persists,
retract the boom operating the
cutout key of the overload warning
system and address to the nearest
authorised workshop
• Check the 10A fuse
F25
and replace
if necessary
• Check the 10A fuse
F24
and replace
if necessary
• Select “CAB”
• If theproblem persists, turn the
"CAB/ROAD/PLATFORM" selector
to "ROAD" and then again to "CAB"
without shutting down the engine.
This will reset the electronic control
unit.
• Check fuse
F14
and replace if
necessary
• Check the relay
• Check the control unit
• Check the pushbutton
• Check the coil
• Check the efficiency of the outrigger
limit switches or replace if
necessary.
• Retract the load within safety limits.
If the error message is still shown,
move the boom to rest condition
operating the overload warning
system cutout key and contact your
nearest authorised service centre.
PROBLEM
CAUSES
SOLUTIONS