Atlas Copco QAS 275-325, Instruction Manual

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Displaying the engine DM1 alarm
Besides some engine specific alarms shown in the
standard alarm list, also all Diagnostic messages
DM1 (active alarms) can be shown on the display.
Use the
UP or DOWN buttons until DM1 is shown on
the display and press ENTER . The DM1 alarm log
will be shown on the display.
Use the
UP and DOWN buttons to scroll through the
list.
The DM1 alarm log will always show the SPN code
(Diagnostics Codes) and the FMI code (Failure
Modes) of every engine failure.
For example, the error code for “Low Coolant Level
Shutdown” will be 111/01 (111 for “Coolant level”
and 01 for “Low level shutdown”).
The list below shows the most common error codes.
The DM1 alarm log for these codes will also show the
alarm text:
SERVICE TIMER 1
SERVICE TIMER 2
ENGINE ALARM
EMERGENCY
STOP
START FAILURE
STOP FAILURE
SPN16 "FUEL FILTER DIFF P"
pressure difference over fuel filter
SPN51 "THROTTLE POS"
throttle position
SPN52 "INTERCOOL TEMP"
intercooler temperature
SPN94 "FUEL PRESS"
fuel pressure
SPN95 "FUEL FILTER DIFF P"
pressure difference over fuel filter
SPN97 "WATER IN FUEL"
water in fuel
SPN98 "OIL LEVEL"
oil level
SPN99 "OIL FILTER DIFF P"
pressure difference over oil filter
SPN100 "OIL PRESSURE"
oil pressure
SPN101 "CRANKCASE PRESS"
crankcase pressure
SPN102 "TURBO BOOST PRESS"
turbo boost pressure
SPN104 "TURBO OIL PRESS"
turbo oil pressure
SPN105 "INTAKE MANIF TEMP"
intake manifold temperature
SPN106 "AIR INLET PRESSURE"
air inlet pressure
SPN110 "COOLANT TEMP"
coolant temperature
SPN111 "COOLANT LEVEL"
coolant level
SPN158 "BATT VOLTAGE"
battery voltage
SPN171 "AMBIENT AIR TEMP"
ambient air temperature
SPN172 "AIR IN TEMP"
air in temperature
SPN174 "FUEL TEMP"
fuel temperature
SPN175 "OIL TEMP"
oil temperature