Carrier VECTOR 1550 Series - Pretrip ALARMS

62-61753-21
7-71
Alarm
NO.
Steps
ALARM / CAUSE
CORRECTIVE ACTION
7.9 Pretrip ALARMS
P141 PRETRIP STOPPED BY USER
 TRIGGER-ON: Pretrip cycle was stopped by user before the Pretrip cycle ended automatically.
 UNIT CONTROL: Alarm Only.
 RESET CONDITION: Alarm may be manually reset via keypad 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 For Any Pretrip Alarms
a. Scroll the alarm list for any Active
Pretrip alarms.
Alarm conditions must be corrected and the alarm
cleared to continue.
2
Rerun Pretrip Check (If Desired)
a. Clear Active Alarm List, then run
Pretrip & check for any new
alarms.
Unit running in Pretrip. Check for any new alarms.
b. Allow to terminate automatically.
Pretrip cycle operates normally.
P145 CHECK SPEED SOLENOID 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 high speed operation - refer to alarm 38
P151 CHECK GLOW PLUG CIRCUIT
 TRIGGER-ON: Glow plug circuit 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 glow plug operation - refer to alarm 40
P152 CHECK FUEL SOLENOID 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 fuel solenoid operation - refer to alarm 31 step 3
P153 CHECK RETURN 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 122