Code
Code
Brake
Brake
Pump stops working
Pump stops working
41
41
Throttle Wiper High
Throttle Wiper High
Throttle invalid
Throttle invalid
42
42
Throttle Wiper Low
Throttle Wiper Low
Throttle invalid
Throttle invalid
43
43
Pot 2 Wiper High
Pot 2 Wiper High
Full brake
Full brake
44
44
Pot2 Wiper Low
Pot2 Wiper Low
Full brake
Full brake
45
45
Pot Low Overcurrent
Pot Low Overcurrent
Throttle invalid
Throttle invalid
Full brake
Full brake
46
46
EEPROM Failure
EEPROM Failure
Motor stops
Motor stops
Main contractor stops.
Main contractor stops.
EM brake stops
EM brake stops
Throttle stops
Throttle stops
Interlock stops
Interlock stops
Driver1-4 stop
Driver1-4 stop
PD stops
PD stops
Brake
Brake
Pump stops
Pump stops
HPD/Sequencing Fault
HPD/Sequencing Fault
47
47
Throttle invalid
Throttle invalid
47
47
Emer Rev HPD
Emer Rev HPD
Throttle invalid
Throttle invalid
49
49
Parameter Change Fault
Parameter Change Fault
Motor stops working
Motor stops working
Main contractor stops working
Main contractor stops working
EM brake stops working
EM brake stops working
Throttle invalid
Throttle invalid
Brake
Brake
Programmer display
Programmer display
Fault display
Fault display
https://www.besttruckmanuals.com/
83
83
Probable fault reason
Probable fault reason
4. 4. Fuse
Fuse protector
protector disconnects
disconnects. .
1. Throttle pot wiper voltage too
1. Throttle pot wiper voltage too
high
high
1. Throttle pot wiper voltage too
1. Throttle pot wiper voltage too
low
low
1. Pot 2 wiper voltage too high
1. Pot 2 wiper voltage too high
1. Pot 2 wiper voltage too low.
1. Pot 2 wiper
voltage too low.
1. Potentiometer impedance is too
1. Potentiometer impedance is too
low.
low.
1. Error writing to the
1. Error writing to the EEPROM
EEPROM. It
may be caused by VCL writing to
may be caused by VCL writing to
EEPROM, or CANBUS, or
EEPROM, or CANBUS, or
incorrect parameter editing.
incorrect parameter editing.
1. Wrong sequence setting of key
1. Wrong sequence setting of key
start, interlock, direction and
start, interlock, direction and
throttle input sequence setting.
throttle input sequence setting.
2. Wiring,
2. Wiring, switch key
switch key, interlock,
, interlock,
direction or throttle input fault.
direction or throttle input fault.
1. Emer Rev already finished, but
1. Emer Rev already finished, but
the throttle, forward or reverse
the throttle, forward or reverse
input and interlock do not return to
input and interlock do not return to
neutral.
neutral.
1. In order to protect
1. In
order to protect truck safety
truck safety, ,
change of certain special
change of certain special
parameter is only valid after restart
parameter is only valid after restart
the key switch.
the key switch.
Deep fault
Deep fault
reason/troubleshooting
reason/troubleshooting
contactor
contactor, , restart
restart the
the key
key switch.
Reason : : Throttle
Reason
Throttle pot w
pot wiper(pin
16) voltage is higher than the
16) voltage is higher than the
high fault threshold(can be
high fault threshold(can be
changed with the VCL function
changed with the VCL function
setup_pot_faults()
setup_pot_faults() ) )
Troubleshooting : : Reduce
Troubleshooting
Reduce the
throttle pot wiper voltage
throttle pot wiper voltage
Reason : : Throttle
Reason
Throttle pot w
pot wiper(pin
16) voltage is lower than the low
16) voltage is lower than the low
fault threshold(can be changed
fault threshold(can be changed
with the VCL function
with the VCL function
setup_pot_faults() ) )
setup_pot_faults()
Troubleshooting : : Raise
Troubleshooting
Raise the
throttle pot wiper voltage
throttle pot wiper voltage
Reason : : Pot 2 wiper(pin 17)
Reason
Pot 2 wiper(pin 17)
voltage is higher than the high
voltage is higher than the high
fault threshold(can be changed
fault threshold(can be changed
with the VCL function
with the VCL function
setup_pot_faults() ) )
setup_pot_faults()
Troubleshooting : : Reduce the pot
Troubleshooting
Reduce the pot
wiper voltage
wiper voltage
Reason : : Pot 2
Reason
Pot 2 wiper(pin 1
wiper(pin 17) 7)
voltage is lower than the low fault
voltage is lower than the low fault
threshold(can be changed with
threshold(can be changed with
the VCL function
the VCL function
setup_pot_faults() ) )
setup_pot_faults()
Troubleshooting : : Increase the pot
Troubleshooting
Increase the pot
wiper voltage
wiper voltage
Reason : : Pot low
Reason
Pot low end (pin 18)
end (pin 18)
exceeds 10mA.
exceeds 10mA.
Troubleshooting: Reduce low end
Troubleshooting: Reduce low end
current, restart the key switch
current, restart the key switch
Reason : : Controller system tries to
. It
Reason
Controller system tries to
write into EEPROM but failed.
write into EEPROM but failed.
Troubleshooting : : Download
Troubleshooting
Download
correct software(OS), set correct
correct software(OS), set correct
parameter
parameter, and then
, and then restart the
restart the
key switch.
key switch.
Reason : : The wrong input of key
Reason
The wrong input of key
start, interlock, direction and
start, interlock, direction and
throttle cause HPD and
throttle cause HPD and
sequencing fault.
sequencing fault.
Troubleshooting : : Re-input
Troubleshooting
Re-input
according to correct sequence.
according to correct sequence.
Reason : : After Emer Rev fi
Reason
After Emer Rev finishes,
each input does not return to
each input does not return to
neutral, that cause the fault.
neutral, that cause the fault.
Troubleshooting : : Re-input
Troubleshooting
Re-input
according to correct sequence.
according to correct sequence.
Reason : : Parameter change
Reason
Parameter change
needs restart of the key switch.
needs restart of the key switch.
Troubleshooting
Troubleshooting : : Restart the key
Restart the key
switch
switch
switch.
iper(pin
the
iper(pin
the
nishes,
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