Carrier Supra 950MT Operation & Service Manual page 59

AL9: Compartment 1 Return Air Sensor Alarm
The Compartment 1 Return Air Sensor alarm is displayed with the description 1RA SENSOR or AL9. This alarm is
generated if the return air sensor is open or shorted. The fault light (FL) is on because there is no controlling probe.
AL10: Compartment 2 Return Air Sensor Alarm
The Compartment 2 Return Air Sensor alarm is displayed with the description 2RA SENSOR or AL10. This alarm is
generated if the return air sensor is open or shorted. The fault light (FL) is on because there is no controlling probe.
AL11: Coolant Temperature Sensor Alarm
The Coolant Temperature Sensor alarm is displayed with the description WT SENSOR or AL11. This alarm is gen-
erated if the coolant temperature sensor is open or shorted.
AL12: Compressor Discharge Temperature Alarm
The Compressor Discharge Temperature alarm is displayed with the description HIGH CDT or AL12. This alarm is
generated if the temperature is sensed above 310°F (154°C) for three minutes. If the discharge temperature
exceeds 350°F (177°C), the three minute timer is overridden and the unit shuts down immediately. The fault light
(FL) is on.
AL13: Compressor Discharge Temperature
Sensor Alarm The Compressor Discharge Temperature sensor alarm is displayed with the description CD SEN-
SOR or AL13. This alarm is generated if the sensor is open or shorted.
AL14: Standby Motor Overload Alarm
The Standby Motor Overload alarm is displayed with the description SBY MOTOR or AL14. This alarm is gener-
ated when the MOL input is sensed open with the Run Relay energized in electric mode (Diesel/Electric Relay
energized).
AL15: Fuse Alarm
The Fuse alarm is displayed with the description FUSE BAD or AL15. This alarm is generated when the FUSE
input is sensed low. The fault light (FL) is on.
AL16: Compartment 3 Return Air Sensor Alarm
Not used in Supra 950MT
AL17: Display Alarm
When no communications exist between the main board and the display board for eight seconds, the Display alarm
description is DISPLAY or AL17
AL18: Maintenance Hour Meter 1 Alarm
The Maintenance Hour Meter Alarm 1 is displayed with the description SERVICE 1 or AL18. This alarm is gener-
ated when the designated hour meter is greater than maintenance hour meter 1.
AL19: Maintenance Hour Meter 2 Alarm
The Maintenance Hour Meter Alarm 2 is displayed with the description SERVICE 2 or AL19. This alarm is gener-
ated when the designated hour meter is greater than maintenance hour meter 2.
AL20: Compartment 1 Out-of-Range Alarm
The Out-of-Range alarm is displayed with the description 1RA OUT or AL20. This alarm is generated when com-
partment 1 is out-of-range. The fault light (FL) is on. See
AL21: Compartment 2 Out-of-range Alarm
The Out-of-Range alarm is displayed with the description 2RA OUT or AL21. This alarm is generated when Com-
partment 2 is out-of-range. The fault light (FL) is on. See
AL22: Compartment 3 Out-of-Range Alarm
Not used in Supra 950MT
AL23: No Power for Standby Alarm (Truck Unit)
NO POWER is displayed if the truck unit is switched to standby and the power plug is not plugged in.
AL26: System Check Alarm
Truck refrigeration system suction pressure is monitored and the alarm is activated if the pressure is <−5 PSI for
120 seconds while in the perishable range.
Table 3–1 for more information.
Table 3–1 for more information.
3-17 62-11863