Failure Code [M400N1] Motor 1: Overrun Alarm - Komatsu WA250-6 Shop Manual

370 Troubleshooting by failure code (Display of code), Part 7

Failure code [M400N1] Motor 1: Overrun alarm

Failure code [M400N1] Motor 1: Overrun alarm
Action code Failure code
E02 M400N1
Contents of
• HST motor 1 speed exceeded alarm operation set value.
trouble
Action of
• Turns the centralized warning lamp and alarm buzzer ON.
controller
Problem that
appears on
• HST motor 1 may be broken (If it is broken, machine cannot travel).
machine
Related • Advance alarm is turned ON before this code is displayed.
information
• If HST motor 1 speed decreases below alarm reset value, system resets itself.
Possible causes
and standard
value in normal
1 HST motor 1 overrun
state
WA250, 250PZ-6
Motor 1: Overrun alarm
Trouble
(HST controller system)
Causes
a Give operator instructions to use engine in range where alarm is
not turned ON.
Standard value in normal state/Remarks on troubleshooting
SEN03847-00
1
27
40-370