Fault
Probable cause
Action
Leak on hydraulic system: leaking
coupling, hose or line.
Danger! Keep well away from an
oil leak.
1. Disengage the PTO.
2. Contact a HIAB service
workshop.
8.8.2. Troubleshooting of the boom extension control
NOTE
The red LED light (1) on the controller
indicates an error in the system.
1
DANGER
All issues must be repaired or replaced by personnel in a HIAB service workshop!
Issue
Solution
Remark
Loosen mechanical thumb
rocker.
Check joystick or replace.
Damaged harness or
connectors from joystick.
Check harness and connectors for
damage.
Damaged harness or
connectors to valves.
Check harness and connectors for
damage.
Red light flashing
in ECU.
Problems with valve operation
while using joystick.
Check the quality and cleanliness of
the connectors (e.g. water).
Red light flashing
in ECU.
No electrical power supply
(24V).
Check the quality and cleanliness of
the connectors (e.g. water). Check
fuse.
No green light
flashing in ECU.
Unintended movement of
boom extension.
Check ECU and replace if
necessary.
Maintenance and Service
HIAB J14S J24S
59