Alpha Technologies Cordex CXCRF 48-300W - Manual (Page 46)

0300072-J0 RevA Page 42 of 46
5.2 Troubleshooting
If any red LEDs on the front panel of the MCU are illuminated this indicates that a fault has developed in the 48-
300W Modular Switched Mode Rectifier System. Table 11 provides a summary of system alarms:
Alarm submenus
Alarm Description of problem What to do
Battery
temperature high
The battery temperature is above the specified
limits
Ensure that the battery cooling
system (if used) is working.
Battery
temperature low
The battery temperature is below the specified
limits
Use optional battery heating
system. Contact Alpha
Technologies Technical Support
for product information.
Battery low
voltage
The batteries are almost discharged.
Ensure that batteries are charging
and run a battery test. If the
charging voltage is low, the
battery may need to be replaced.
Temperature
probe unplugged
The temperature probe is unplugged or faulty
Reconnect probe to the 48-300W
Modular Switched Mode Rectifier
System or replace if if faulty
Battery LVD relay
open
The battery relay is open
Ensure the battery relay is
working by switching the battery
breaker on and off (the batteries
have to be connected)
Rectifier failure One or more rectifier failed
Contact Alpha Technologies
Technical Support
DC bus low The voltage of DC bus is too low
The load is faulty or unsuitable for
powering via the 48-300W rectifier
system or one or more rectifiers
may be faulty
DC bus high The voltage of DC bus is too high
The load is unsuitable for
powering via the 48-300W rectifier
system
Table 11: Troubleshooting