© Jan. 2024
46 0608ME All Maintenance Manual
TROUBLESHOOTING GUIDE
Table 9-1 Machine Faults and Solutions (Sinoboom Control System) (continued)
Code
Description
Restricted
functions
Recommended solution
81 Driver Alarm
Lift and travel
Check the specific fault code of the driver alarm
and determine the specific cause based on the
fault code.
82 Left Brake Coil Fault Lift and travel
Check whether the coil terminal wiring is correct.
If this does not solve the problem, please check
the coil itself for open or short circuit. If this does
not solve the problem, please try to replace the
motor controller.
83
Right Brake Coil Fault
Lift and travel
Check whether the coil terminal wiring is correct.
If this does not solve the problem, please check
the coil itself for open or short circuit. If this does
not solve the problem, please try to replace the
motor controller.
84
Motor Does Not Return Brake
Release Signal
Lift and travel
Check whether the wiring between the controller
and the motor is correct.
93
BMS System Fault
Lift and travel
Check the lithium battery fault code, and contact
Sinoboom aftersales personnel.
CL Collision Fault Lift and travel
This alarm will be generated if the platform
contacts an obstacle during lifting triggering the
proximity switch. If the proximity switch is not
triggered but still generates an alarm, please try
replacing the proximity switch.
Ft
Foot Pedal Not Depressed Alarm
Limits all
operations on
the PCU
This alarm will occur when using the handle to
operate the machine for travel and lifting
movements without depressing the foot pedal. If
the alarm still occurs if the foot pedal is depressed
while operating the handle, please check whether
there is a problem with the foot pedal switch.
LL Machine Tilt Alarm Lift and travel
Check whether the machine is tilted. If this alarm
sounds when the machine is level, please check
the level sensor and its wiring.
OL Overloaded Platform Fault All functions
This indicates that the platform load has
exceeded the limit, please remove excess load
immediately.
HE
Indoor and outdoor travel switch
calibration error
Lift and travel
Carry out checks in the following sequence:
• Check the installation position of the indoor
and outdoor travel switches to ensure that the
triggering position is within 0.6 m (1.97 ft) be-
low the outdoor limit height;
• Check whether the angle sensor is correctly
installed;
• Try carrying out height calibration again.
If the above methods still do not solve the
problem, please try to replace the indoor and
outdoor travel switches.
PL
Overloaded Platform Warning
Lift and travel
This indicates that the platform load has
exceeded the limit, please remove excess load
immediately.
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