Komatsu D155AX-8E0, Operation & Maintenance Manual

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Problem Main causes Remedy
DEF level caution lamp is displayed
on monitor.
Lowering of DEF level Add DEF.
Action level or caution lamp is dis-
played on monitor.
Contact your Komatsu distributor.
Alarm buzzer sounds. Contact your Komatsu distributor.
Engine suddenly lost power.
(Entered derate mode.)
Contact your Komatsu distributor.
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 switch F5 to dis-
play the Current Abnormality and check the details and reme-
dy.
For the contents of the action level display and caution lamp,
see “WARNING DISPLAY (3-13)”.
• When the machine has not run out of fuel, if CA2249 or
CA559 appears on the Current Abnormality screen, re-
place both fuel main filter element and fuel prefilter ele-
ment immediately.
If CA2249 or CA559 does not disappear even after the re-
placement, ask your Komatsu distributor for an inspection immediately, even though the machine can per-
form normal operation.
Telephone number for the point of contact if an error occurs
When an error screen is displayed on the monitor, press the
switch F5 to display the Current Abnormality screen and tele-
phone number (3) for the point of contact is displayed in the
message 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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