Indication
Trouble Description
Action Limit
Trouble Inspection
52
The forward solenoid valve
breaks down
Lifting
and
traveling
Inspect whether the harness connected to the solenoid valve connector has been inserted tightly, and meanwhile inspect
whether the solenoid valve is short-circuited or open-circuited.
53
The backward solenoid valve
breaks down
Lifting
and
traveling
Inspect whether the harness connected to the solenoid valve connector has been inserted tightly, and meanwhile inspect
whether the solenoid valve is short-circuited or open-circuited.
54
The lifting solenoid valve breaks
down
Lifting
and
traveling
Inspect whether the harness connected to the solenoid valve connector has been inserted tightly, and meanwhile inspect
whether the solenoid valve is short-circuited or open-circuited.
55
The descending solenoid valve
breaks down
Lifting
and
traveling
Inspect whether the harness connected to the solenoid valve connector has been inserted tightly, and meanwhile inspect
whether the solenoid valve is short-circuited or open-circuited.
56
The right turning solenoid valve
breaks down
Lifting
and
traveling
Inspect whether the harness connected to the solenoid valve connector has been inserted tightly, and meanwhile inspect
whether the solenoid valve is short-circuited or open-circuited.
57
The left turning solenoid valve
breaks down
Lifting
and
traveling
Inspect whether the harness connected to the solenoid valve connector has been inserted tightly, and meanwhile inspect
whether the solenoid valve is short-circuited or open-circuited.
61
Current sensor error of motor
controller
All actions
The traveling or lifting motor may be overheated. Cool the machine down for a while. If it is not helpful, restart the
machine to reset the motor controller. If the issue still exists, check the wiring. If the wiring is fine, replace the motor
controller.
62
Hardware error of motor
controller
All actions
Restart the machine. If the issue fails to be solved, check the source of the noise. If the issue still exists, replace the
motor controller.
63
Motor output error of motor
controller
All actions
First check the wiring before restarting. If the issue still exists, replace the motor controller.
64
SRO error of motor controller
All actions
Use Sinoboom scissor program to check motor parameter enable delay which may be too short. Confirm other motor
controller parameters are correct.
65
Throttle valve error of motor
controller
All actions
Check the wiring and make sure selecting the correct type of the throttle valve in the motor controller.
36
GTJZ0407SE
Maintenance Manual
