C H A P T E R 6
TROUBLESHOOTING
The Powerware 9150 is designed for durable, automatic operation and also alerts you whenever potential operating problems may occur. Usually the alarms shown by the control panel do not mean that the output power is affected. Instead, they are preventive alarms intended to alert the user. Use the following troubleshooting chart to determine the UPS alarm condition.
Indicator or Alarm
ON BATTERY
BYPASSED
2 short beeps
OVERLOAD
OVERTEMP
On or Blinking
Possible Cause
LED is on. A utility failure has occurred and the UPS is in Battery Mode. The alarm sounds for five seconds when battery operation is initialized and then twice every minute.
LED is blinking. The battery voltage is low and has less than five minutes of backup time left before UPS shutdown.
The UPS is in Bypass Mode.
LED is on. Power requirements exceed the UPS capacity (greater than 100% of nominal).
LED is blinking. Overload condition caused the UPS to shut down (greater than 150% of nominal for 0.3 seconds).
One of the main UPS components is too hot or the fan has failed.
7 short and 3 long UPS beeps indicate the temperature inside the UPS is more than 50 degrees.
4 short and 4 long UPS beeps indicate a fan failure.
Action
None. The alarm resets when the condition becomes inactive.
Prepare your equipment for shutdown. When utility is restored, the UPS restarts automatically, provides power to the load, and charges the battery.
None. The alarm resets when the condition becomes inactive. Contact your service representative if the condition persists.
Reduce the load. Your UPS continues to operate, but may switch to Bypass Mode if the load increases (112.5 - 150% of nominal for 30 seconds). The alarm resets when the condition becomes inactive.
Reduce the load and restart the UPS. You may need to obtain a larger capacity UPS.
Turn the Maintenance Bypass switch to the SERVICE position. Clear vents. Remove any heat sources. Allow the UPS to cool. If the alarm disappears, turn the Maintenance Bypass switch back to the UPS position. Contact your service representative if the condition persists.
Powerware® 9150 User’s Guide : www.powerware.com | 55 |