Sakai SV510-III, Shop Manual

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9-021
TROUBLESHOOTING
2-3. Error Codes
2-3-1. Description of error codes
The traction control system is comprised of traction control box, motor rotation sensors and motor
proportional solenoids. The traction control box receives signals from motor rotation sensors.
When the sensor signal indicates that the drum or drive wheels are spinning, the traction control box sends an
output signal to the motor proportional solenoid of the spinning drum or drive wheels to reduce the flow to the
motor. The flow is then routed to the drum or drive wheel that is not spinning.
While operating the compactor both the drive wheels and drum begin to spin, the compactor will automatically
go to the low travel speed. As the compactor moves out of the area of slippage, it will remain the low travel
speed mode regardless of the switch position. The compactor must be placed in neutral to and then returned to
the desired position to reset the traction control box.
The traction control box has two LEDs on the front panel. The green LED illuminates when the traction control
box is powered. The red LED is for displaying error codes by number of flashes. The error codes are displayed
in a numerical order. A flash code cannot be cleared until the error is corrected. After the error has been
corrected the traction control box will indicate the next error code if one is present. The traction control system
will not operate properly with active error codes.
The error codes are assigned a number ranging from 1 to 99. The error codes show up with a four blink “burst”
to indicate the start of an error code. This is followed by “long” blinks representing the “tens” value of the error
number followed by “short” blinks representing the “one” value.
SV510- -09003
Four blink
(break) ( break )
Example : Error code 27
Two long blink Seven short blink
2-3-2. Error code list
Rear motor rotation sensor Front motor rotation sensor
Error code Description Error code Description
1 to 4 Bad speed sensor 11 to 14 Bad speed sensor
5 Frequency voltage too low 15 Frequency voltage too low
6 Frequency voltage too high 16 Frequency voltage too high
7 Broken wire, signal 17 Broken wire, signal
8 Broken wire, ground 18 Broken wire, ground
9 Broken wire, power 19 Broken wire, power
Rear motor proportional solenoid Front motor proportional solenoid
Error code Description Error code Description
21 Current too high or low based on plus 1 pre-sets 31 Current too high or low based on plus 1 pre-sets
22 Current too high or low based on plus 1 pre-sets 32 Current too high or low based on plus 1 pre-sets
23 Open circuit 33 Open circuit
24 Dead short to coil 34 Dead short to coil
25 Bad coil, amps too high 35 Bad coil, amps too high
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