Carrier 69NT40-541-505, Руководство по эксплуатации и обслуживанию, Страница: 65 / 143

4–35 T-368
AL50 AIR VENT POSITION SENSOR (VPS)
Cause: VPS Sensor out of range.
Component Vent Position Sensor (VPS)
Troubleshooting Make sure VPS is secure.
Corrective Action Manually tighten panel.
Component Vent Position Sensor (VPS)
Troubleshooting
If the alarm persists, replace the sensor or the assembly.
Corrective Action
Replace VPS.
AL51 EEPROM FAILURE
Cause: Controller Memory Failure
Component Controller
Troubleshooting Pressing the ENTER key when CLEAr is displayed will result in an attempt
to clear the alarm.
Corrective Action If action is successful (all alarms are inactive), AL51 will be reset.
Component Controller
Troubleshooting
Power cycle the unit. If the alarm persists, it indicates defective controller
memory.
Corrective Action Replace defective controller, refer to Controller Service Section 7.20 .
AL52 EEPROM ALARM LIST FULL
Cause: Alarm list queue is full.
Component Active Alarms
Troubleshooting Repair any alarms in the queue that are active. Indicated by AA.
Corrective Action Clear alarms, refer to CONTROLLER ALARMS Table 4–6 .
AL53 BATTERY PACK FAILURE
Cause: Battery voltage low
Component 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 batteries sufficiently.
Once fully charged, the alarm will deactivate.
Corrective Action To clear the alarm press ENTER and ALT simultaneously at the startup of
Cd19 (Battery Check).
If alarm persists, replace the battery pack, refer to
Section 7.20.5 Battery
Replacement.
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