Komatsu H75051, Operation & Maintenance Manual

Page: 309 / 440

IF MACHINE MONITOR SHOWS WARNING DISPLAY
When the action level display (1) or caution lamp (2) is shown
on the display of the machine monitor, press the switch (3) to
display “Current Abnormality” and check the details and reme-
dy.
Take the actions according to the message shown on the ma-
chine monitor, and check the failure code, and then ask your
Komatsu distributor for repair, as necessary.
• If “CA2249” or “CA559” is displayed on “Current Abnormal-
ity” screen although the machine has not run out of fuel,
replace both of the fuel main filter and fuel prefilter immedi-
ately.
If “CA2249” or “CA559” is not cleared even after the re-
placement, the machine still can perform normal operation,
but ask your Komatsu distributor for inspection immediate-
ly.
• When failure code “CA4166 (SCR Temperature Sensor
ECU High Temperature Error)” is displayed, raise the cool-
ing fan speed by raising the engine speed to emit the heat
inside the engine room.
Telephone number for the point of contact when an error occurs
When an error screen is displayed on the monitor, press the
switch (3) to display “Current Abnormality” screen and tele-
phone number for the point of contact is displayed in the mes-
sage column at the bottom of the screen.
REMARK
If no point of contact telephone number is registered, no tele-
phone number is displayed.
Ask your Komatsu distributor for the telephone number regis-
tration if necessary.
OPERATION TROUBLES AND ACTIONS
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