Carrier PrimeLINE 69NT40-561-200 Operation And Service Manual page 83

AL52 EEPROM ALARM LIST FULL
Cause: Alarm list queue is full
Component
Corrective Action Clear alarms. Refer to Controller Alarms
AL53 BATTERY PACK FAILURE
Cause: Battery voltage low
Component
Corrective Action To clear the alarm press ENTER and ALT simultaneously at the
AL54 PRIMARY SUPPLY SENSOR (STS)
Cause: Invalid Supply Temperature Sensor (STS) reading.
Component
Corrective Action If P5 passes, no further action is required.
AL56 PRIMARY RETURN SENSOR (RTS)
Cause: Invalid Return Temperature Sensor (RTS) reading.
Component
Corrective Action If P5 passes, no further action is required.
AL57 AMBIENT SENSOR (AMBS)
Cause: Invalid Ambient Temperature Sensor (AMBS) reading.
Component
Corrective Action Replace AMBS if defective. Refer to Temperature Sensor Service
Active Alarms
Troubleshooting Repair any alarms in the queue that are active. Indicated by "AA".
Battery
Troubleshooting If this alarm occurs on start up, allow a unit fitted with rechargeable
batteries to operate for up to 24 hours to charge rechargeable batter-
ies sufficiently. Once fully charged, the alarm will deactivate.
startup of Cd19 (Battery Check). If alarm persists, replace the battery
pack. Refer to
Supply Temperature Sensor (STS)
Troubleshooting Perform pre-trip P5.
If P5 fails, replace the defective sensor as determined by P5. Refer
to Temperature Sensor Service
Return Temperature Sensor (RTS)
Troubleshooting Perform pre-trip P5.
If P5 fails, replace the defective sensor as determined by P5. Refer
to Temperature Sensor Service
Ambient Temperature Sensor (AMBS)
Troubleshooting Test the AMBS. Refer to Sensor Checkout Procedure
7.28.1.
Section
Section 7.27.9 Battery Replacement.
Section
Section
7.28.
4–45
Section 4.5.
7.28.
7.28.
Section
T-362