Failure Code [989Fn1] Travel Speed: Overrun Alarm - Komatsu WA250-6 Shop Manual

SEN03841-00

Failure code [989FN1] Travel speed: Overrun alarm

Action code Failure code
E02
Contents of • Travel speed exceeded 45 km/h.
trouble
• Auto-decelerator does not work at speed higher than 40 km/h.
Action of
• Turns central warning lamp and caution buzzer ON.
machine monitor
Problem that
appears on • If machine is used as it is, brake etc. may be damaged.
machine
Related
• If [DW26KA] or [DW26KY] is displayed, carry out troubleshooting for it first.
information
Possible causes
1 Overrun
and standard
value in normal
state
2 Defective machine monitor
6
40-310
Trouble
989FN1
Causes
310 Troubleshooting by failure code (Display of code), Part 1
Failure code [989FN1] Travel speed: Overrun alarm
Travel speed: Overrun alarm
(Machine monitor system)
Standard value in normal state/Remarks on troubleshooting
System is normal (when machine is used as it overruns by acceler-
ating on sharp downhill road etc.)
a Check using condition and teach operator correct using method.
a Check related components for damage.
• If alarm is turned ON while travel speed is below limit, machine
monitor may be defective. (Since trouble is in system, trouble-
shooting cannot be carried out.)
WA250, 250PZ-6