CodeCode
Programmer displayProgrammer display
Probable fault reasonProbable fault reason
Deep faultDeep fault
reason/troubleshootingreason/troubleshooting
Fault displayFault display
6= Low voltage cutback failure6= Low voltage cutback failure
7= High pressure cutback f failure7= High pressure cutback f failure
8= Controller can’t detect encoder8= Controller can’t detect encoder
signal and passage signalsignal and passage signal
disappears.disappears.
9= Motor parameter setting9= Motor parameter setting
exceeds the scope.exceeds the scope.
8989
Motor Type FaultMotor Type Fault
1. Motor type parameter values1. Motor type parameter values
exceed the rangeexceed the range
ReasonReason：：Motor Type parameterMotor Type parameter
setting value is an illegal value.setting value is an illegal value.
TroubleshootingTroubleshooting
：：
Reset andReset and
restart the key switch.restart the key switch.
9191
VCl/OS MismatchVCl/OS Mismatch
Motor stopsMotor stops
Main contactor stopsMain contactor stops
EM brake stopsEM brake stops
Accelerator stopAccelerator stopss
Interlock stopsInterlock stops
1-4 output stops1-4 output stops
PD stopsPD stops
BrakeBrake
Pump stopsPump stops
1. The controller VCL does not1. The controller VCL does not
match OS.match OS.
ReasonReason：：The controller VCL doesThe controller VCL does
not match OS.not match OS.
TroubleshootingTroubleshooting：：Update newUpdate new
VCL and OS.VCL and OS.
9292
EM Brake Failed to SetEM Brake Failed to Set
EM Brake failureEM Brake failure
Throttle invalidThrottle invalid
1. 1. Truck Truck continues continues to to move move afterafter
the EM brake has beenthe EM brake has been
commanded to setcommanded to set
2. Small EM braking force.2. Small EM braking force.
ReasonReason：：After EM brake After EM brake locks,locks,
the truck still moves.the truck still moves.
TroubleshootingTroubleshooting
：：
Check if theCheck if the
throttle works normal.throttle works normal.
9393
Encoder LOS (Limited OperatingEncoder LOS (Limited Operating
Strategy)Strategy)
1. LOS activated due to motor1. LOS activated due to motor
installing or encoder fault.installing or encoder fault.
2. Wrong wiring.2. Wrong wiring.
3. Truck is stalled3. Truck is stalled
ReasonReason：：LOS activated due toLOS activated due to
motor installing or encoder fault.motor installing or encoder fault.
TroubleshootingTroubleshooting：：Restart the keyRestart the key
switchswitch，，if it is caused by motorif it is caused by motor
installing, make sure encoderinstalling, make sure encoder
work under normal condition,work under normal condition,
Throttle Throttle Command=0,MCommand=0,Motorotor
RPM=0.RPM=0.
9494
Emer Rev TimeoutEmer Rev Timeout
EM Brake failureEM Brake failure
Throttle invalidThrottle invalid
1. Emer Rev timeout activated due1. Emer Rev timeout activated due
to EMR Timer overdueto EMR Timer overdue
2. Emer Rev switch is always at2. Emer Rev switch is always at
ON position.ON position.
ReasonReason：：Emer Rev functionEmer Rev function
activated to operate until Emeractivated to operate until Emer
Rev timing end.Rev timing end.
TroubleshootingTroubleshooting：：Check EmerCheck Emer
Rev switch.Rev switch.
9898
Illegal Model NumberIllegal Model Number
Motor stopsMotor stops
Main contactor stopsMain contactor stops
EM brake stopsEM brake stops
Throttle stopsThrottle stops
BrakeBrake
Pump stopsPump stops
1. Controller model can’t be1. Controller model can’t be
identified.identified.
2. Software and hardware do not2. Software and hardware do not
match.match.
3. Controller damage.3. Controller damage.
ReasonReason
：：
Controller model can’tController model can’t
be identifiedbe identified
TroubleshootingTroubleshooting
：：
Choose correctChoose correct
controller, and download correctcontroller, and download correct
controller software.controller software.
9999
Dualmotor Parameter MismatchDualmotor Parameter Mismatch
Close main contactorClose main contactor
Close EM brakeClose EM brake
Close acceleratorClose accelerator
Brake and close the pumpBrake and close the pump
Enable parameter of dualmotor isEnable parameter of dualmotor is
set as ON, and control modeset as ON, and control mode
selecting parameter not set as 0selecting parameter not set as 0
（（Speed Mode Express) or 1Speed Mode Express) or 1
（（
Speed ModeSpeed Mode
））
ReasonReason
：：
When the dual driveWhen the dual drive
software enabled, control modesoftware enabled, control mode
should set as 0should set as 0（（Speed ModeSpeed Mode
Express) or 1Express) or 1（（Speed ModeSpeed Mode））,,
otherwise there will be fault.otherwise there will be fault.
TroubleshootingTroubleshooting
：：
Adjust to properAdjust to proper
value and switch KSI.value and switch KSI.
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