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Eaton 9PX Lithium-Ion P-164001006—Rev 01 37
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The Eaton 9PX are designed for durable, automatic operation and also alert 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.
• Events are silent status information that are recorded into the Event log. Example = "AC freq in range".
• Alarms are recorded into the Event log and displayed on the LCD status screen with the logo blinking.
Some alarms may be announced by a beep every 3 seconds. Example = "Battery low".
• Faults are announced by a continuous beep and red LED, recorded into the Fault log and displayed on the
LCD with a specific message box. Example = Out. short circuit.
Use the following troubleshooting chart to determine the UPS alarm condition.
Checking the Alarms and Faults
To check the Event log or Fault log :
1. Press any button on the front panel display to activate the menu options.
2. Press the button to select Event log or Fault log.
3. Scroll through the listed events or faults.
The following table describes typical conditions.
Conditions Possible cause Action
Battery mode
LED is On.
1 beep every 10 seconds
A utility failure has occurred and the UPS
is in battery mode.
The UPS is powering the equipment with
battery power. Prepare your equipment
for shutdown.
Battery mode
LED is On.
1 beep every 3 seconds
The UPS is in Battery mode and the
battery is running low.
This warning is approximate, and the
actual time to shutdown may vary
significantly. Depending on the UPS load
and number of Extended Battery Modules
(EBMs), the "Battery Low" warning may
occur before the batteries reach 20%
capacity.
No battery
LED is On
Beep continuous
The batteries are disconnected. Verify that all batteries are properly
connected. If the condition persists,
contact your service representative.
Battery fault
LED is On
Beep continuous
The battery test is failed due to bad or
disconnected batteries.
Verify that all batteries are properly
connected. If the condition persists,
contact your service representative.
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