Carrier Supra 650 Service Manual download pdf (Page 41)

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Low Oil Pressure Alarm

The English display for the Low Oil Pressure alarm is

“ENG OIL.” The code display is “AL0.” This alarm is

generated if the microprocessor senses low oil pressure

any time after a short delay allowed at startup. When

this alarm is generated, the fault light will illuminate and

the engine will shut down.

High Coolant Temperature Alarm

The English display for the High Coolant Temperature

alarm is “ENG HOT.” The code display is “AL1.” This

alarm is generated if the microprocessor senses coolant

temperature above 230_F(110_C). When this alarm is

generated, the fault light will illuminate and the engine

will shut down.

High Pressure Alarm

The English display for the High Pressure alarm is “HI

PRESS.” The code display is “AL2.” This alarm is gener-

ated if the high pressure switch opens. When this alarm

is generated, the fault light will illuminate and the engine

will shut down.

Start Failure Alarm

The English display for the Start Failure alarm is

“STARTFAIL.” The code display is “AL3.” This alarm is

generated if the start sequence has completed and the

engine has failed to start. When this alarm is generated,

the fault light will illuminate.

If function parameter MAN OP (FN10 OFF) is selected

the start failure alarm will be generated if the engine is

not started in five minutes.

Low Battery Voltage Alarm

The English display for the Low Battery Voltage alarm is

“LOW BATT.” The code display is “AL4.” This alarm is

generated if the battery voltage falls below 10 VDC.

When this alarm is generated, the fault light will illumi-

nate.

High Battery Voltage Alarm

The English display for the High Battery Voltage alarm is

“HIBATT.” The code display is “AL5.” This alarm is gen-

erated if the battery voltage rises to 17 VDC. When this

alarm is generated, the fault light will illuminate and the

engine will shut down.

Defrost Override Alarm

The English display for the Defrost Override alarm is

“DEFR FAIL.” The code display is “AL6.” This alarm is

generated if the defrost has been terminated by the 45

minute timer. The fault light will not be illuminated by this

alarm.

Alternator Auxiliary Alarm

The English display for the Alternator Auxiliary alarm is

“ALT AUX.” The code display is “AL7.” This alarm is

generated if the alternator auxiliary signal is not present

with the engine running. When this alarm is generated,

the fault light will illuminate.

Starter Motor Alarm

The English display for the Starter Motor alarm is

“STARTER.” The code display is “AL8.”This alarm is

generated if the starter motor input signal is not present

with starter solenoid energized. When this alarm is gen-

erated, the fault light will illuminate.

Return Air Sensor Alarm

The English display for the Return Air Sensor alarm is

“RA SENSOR.” The code display is “AL9.” This alarm is

generated if the return air sensor is open or shorted.

If the microprocessor is set to allow operation on a sec-

ond sensor, it will switch control to that sensor. If the unit

is not fitted with a second sensor or if the microproces-

sor is not set to allow control on the second sensor, one

of two actions will be taken.

1. If the unit is operating in the perishable range, the

unit will shut down.

2. If the unit is operating in the frozen range, the unit will

switch to low speed cool.

When this alarm is generated, the fault light will illumi-

nate.

Supply Air Sensor Alarm

The English display for the Supply Air Sensor alarm is

“SA SENSOR.” The code display is “AL10.” This alarm

is generated if the supply air sensor is open or shorted.

This alarm will be disabled if the REM PROBE (FN4 A) is

selected in the controlling probe functional parameter.

The fault light will not be illuminated by this alarm.

Coolant Temperature Sensor Alarm

The English display for the Coolant Temperature Sen-

sor alarm is “WT SENSOR.” The code display is “AL11.”

This alarm is generated if the coolant temperature sen-

sor is open or shorted. The fault light will not be illumi-

nated by this alarm.

Compressor Discharge Temperature Alarm

The English display for the Compressor Discharge Tem-

perature alarm is “HIGH CDT.” The code display is

“AL12.” This alarm is generated if the microprocessor

senses discharge temperature above 310_F (155_C)

or 3 minutes. When this alarm is generated, the fault

light will illuminate.

If the discharge temperature exceeds 350_ F (177_C),

the fault light will illuminate and the engine will be shut

down immediately.

Compressor Discharge Temperature Sensor Alarm

The English display for the Compressor Discharge Tem-

perature Sensor alarm is “CD SENSOR.” The code dis-

play is “AL13.” This alarm is generated if the sensor is

open or shorted. The fault light will not be illuminated by

this alarm.

Standby Motor Overload Alarm

The English display for the Standby Motor Overload

alarm is “SBY MOTOR.” The code display is “AL14.”

This alarm is generated if the MOL is open and the

diesel/electric relay is energized (indicating standby

mode).

Fuse Alarm

The English display for the Fuse alarm is “FUSE BAD .”

The code display is “AL15.” This alarm is generated

when the FUSE input is sensed low. When this alarm is

generated, the fault light will illuminate.

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Comments to this Manuals

Hermes Hurtado 13 Mar 2025 | 11:43:58

Soy mecánico mantenedor. Necesito manuales técnicos

Carrier Supra 650 Service Manual Page 41

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