Carrier NDK33BN0KB, Operation & Service Manual

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62-61753-21 7-2
The Inactive Alarm list is cleared in the same
way. When the inactive alarm list is cleared
both the inactive and active lists are cleared.
Clearing the inactive alarm list removes the
alarm from the microprocessor.
Note 2 Many electrical circuits may be tested by
powering the circuits without starting the en-
gine. This can be done by first setting the NO
POWER Configuration to the ALARM &
SHUTDOWN selection, then leaving the unit
disconnected from any Standby Power, plac-
ing the Diesel/Electric Switch in the Electric
position, and placing the SROS in the
START/RUN position. In this mode, the Run
Relay will be energized and the unit will re-
main off.
Note 3 Sensors may be tested at the component
plug using an ohmmeter. If required, sensor
circuits may also be tested at the 1MP plug.
Remove plug and, using an ohmmeter, test
resistance of circuits. Be careful not to dam-
age the connector pins. (Refer to Section
8.7.7 for chart of resistances for different
sensors.)
Note 4 The Defrost Air Switch, RPM Sensor, Engine
Oil Level Switch, Fuel Level Sensor, Door
Switch, or HP1 can be tested as components
alone. If required, the circuits may be tested
at the 2MP plug. Remove plug from Micro-
processor and using the wiring schematic,
check for voltage at the appropriate terminal.
Note 5 Some tests can only be conducted while the
unit is operating. The unit may be started au-
tomatically in either Diesel or Electric by
placing the Diesel / Electric Switch in the de-
sired operating position, then placing the
SROS in the START/RUN position.