Carrier NDK33BN0KB, Руководство по эксплуатации и обслуживанию

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62-61753-21 7-72
Alarm
NO.
Steps ALARM / CAUSE CORRECTIVE ACTION
P154 CHECK SUPPLY AIR SENSOR

TRIGGER-ON: Sensor reading was not within the expected range during test.

UNIT CONTROL: Pretrip will fail and display "PRETRIP FAIL AND COMPLETED".

RESET CONDITION: Auto Reset if Pretrip is started again, or alarm may be manually reset via key-
pad or by turning the unit off, then back on again.
1 Check Sensor - refer to alarm 123
P155 CHECK COOLANT TEMP SENSOR

TRIGGER-ON: Sensor reading was not within the expected range during test.

UNIT CONTROL: Pretrip will fail and display "PRETRIP FAIL AND COMPLETED".

RESET CONDITION: Auto Reset if Pretrip is started again, or alarm may be manually reset via key-
pad or by turning the unit off, then back on again.
1 Check Sensor - refer to alarm 129
P156 CHECK BYPASS (UNLOADER SOLENOID VALVE) CIRCUIT

TRIGGER-ON: Solenoid coil did not draw expected amperage during test

UNIT CONTROL: Pretrip will fail and display "PRETRIP FAIL AND COMPLETED".

RESET CONDITION: Auto Reset if Pretrip is started again, or alarm may be manually reset via key-
pad or by turning the unit off, then back on again.
1 Check bypass (unloader) solenoid valve - refer to alarm 112
P157 CHECK BATTERY CURRENT

TRIGGER-ON: With all circuits off, current flow of more than 1.5 amps is detected in the electrical cir-
cuits.
NOTE : If this alarm occurs, Pretrip Test #2 will not be performed. Pretrip will need to be
restarted to continue testing.

UNIT CONTROL: Pretrip will fail and display "PRETRIP FAIL AND COMPLETED".

RESET CONDITION: Auto Reset if Pretrip is started again, or alarm may be manually reset via key-
pad or by turning the unit off, then back on again.
NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, clear the
alarm(s). (
See Note 1 Page 7-1 ) Operate the unit through the appropriate modes to see if any active alarm oc-
curs. Continue with the steps below as necessary.
1 Check No Load Current Draw
a. Energize circuit (refer to Note 2
Page 7-2). Observe current draw
on microprocessor display.
Reading is less than 1.5 Amps.
b. Disconnect F5 wire and remove
from inside current sensing loop.
Reconnect at F5 and place SROS
in the ON position.
Without wire in loop, reading should be 0 +/- 1 amp.
2 Check Individual Circuits
a. Isolate individual circuits and test
amp draw.
Must be in range. (Refer to Section 2.12.)
3 Check for parasitic loads.
a. Check for electrical loads that are
drawing current with all circuits
OFF
Check for non-factory installed devices such as lift
gates, inside lights, satellite systems, etc. These de-
vices must be wired so as to not draw current during
pretrip testing.