Issue:
What are the basic troubleshooting steps for the Smart-UPS Ultra SRTL3KRM1UC/SRTL3KRM1UNC/SRTL2K2RM1UC/SRTL2K2RM1UNC?

Product Line:
Smart-UPS Ultra On-Line
SRTL3KRM1UC
SRTL3KRM1UNC
SRTL2K2RM1UC
SRTL2K2RM1UNC

Environment:
All Serial Numbers

Cause:
During normal operation, you may find your UPS not functioning as expected. This may be due to a malfunction, configuration issue, or the install environment.

Resolution:

Use the table below to solve minor installation and operation problems.

For assistance with complex UPS problems, please contact the Customer Care Center at https://www.apc.com/us/en/support/

Problem and Possible Cause	Solution
UPS is not turning on or there is no output
The UPS is not connected to mains power.	Be sure the power cable is securely connected to the mains power supply.
The UPS display interface screen shows very low or no mains power.	Check the mains power supply to verify acceptable power quality.
There is an internal UPS alert or message.	The UPS Display Interface screen will show a message to identify the alert or message and corrective action.
UPS emits an audible alarm
Normal UPS operation when running on battery power.	The UPS is operating on battery power. Refer to the status of the UPS as shown on the UPS Display Interface screen. Touch any key to mute all audible alarms.
The UPS emits an audible alarm and has a red or amber back light on the UPS Display Interface screen.	The UPS has detected a fault. Refer to the display interface screen for information.
UPS does not provide expected backup time
The UPS batteries are weak due to a recent power outage or they are near the end of service life.	Charge the batteries. Batteries require recharging after extended outages and wear out faster when put into service often or when operated at elevated temperatures. If the batteries are near the end of service life, consider replacing the batteries even if the Replace Battery message is not displayed.
The UPS is experiencing an overload condition.	The connected equipment exceeds the specified maximum load. Refer to the APC by Schneider Electric web site, www.apc.com for product specifications. The UPS will emit a sustained audible alarm until the overload condition is corrected. Disconnect nonessential equipment from the UPS to correct the overload condition.
UPS operates on battery power while connected to mains power
The input circuit breaker has tripped.	Reduce the load on the UPS. Disconnect nonessential equipment and reset the circuit breaker. Check the circuit breaker rating for the connected equipment.
There is very high, very low, or distorted input line voltage.	Navigate to the UPS Display Interface screen that shows input voltage. Verify that the input voltage is within specified operating limits. If no input voltage is indicated on the UPS Display Interface screen, contact Customer Support through the APC by Schneider Electric web site, www.apc.com.
UPS Display Interface Status screen shows Overload and the UPS emits a sustained audible alarm
The UPS is experiencing an overload condition.	The connected equipment exceeds the maximum load rating for the UPS. The UPS will emit a sustained audible alarm until the overload condition is corrected. Disconnect nonessential equipment from the UPS to correct the overload condition.
UPS Display Interface Status screen shows UPS is operating in Bypass mode
The UPS received a command to operate in Bypass mode	No action is required.
The UPS has automatically switched to Bypass mode due to an internal UPS alert or message.	The UPS Display Interface screen will show a message to identify the alert or detected error and corrective action.
UPS Display Interface is red or amber and shows an alert or message The UPS emits a sustained audible alarm
The UPS has detected a problem during normal operation.	Follow the instructions on the UPS Display Interface screen. Touch any key to mute all audible alarms.
The UPS Display Interface screen shows the message Disconnected Battery.	Be sure the battery cables are securely connected.
The UPS Display Interface screen shows the message Replace Battery.	Replace all RBMs. Contact customer support.
The UPS display turns red or amber, displays an alert message, and emits a sustained audible alarm. Red illumination indicates a UPS alarm that requires immediate attention. Amber illumination indicates a UPS alarm that requires attention.
There is an internal UPS alert or message.	Do not attempt to use the UPS. Turn the UPS off and have it serviced immediately.
The UPS is experiencing an overload condition.	Reduce the load on the UPS. Disconnect nonessential equipment.
The UPS has detected a Site Wiring Fault.	Correct the building site wiring fault or ignore this message. See Config Menu UPS in “General settings” on page 18 of the User Manual.
The Replace Battery alert is displayed
The RBM has a weak charge.	Allow the RBM to recharge for at least four hours. Then, perform a UPS Self Test. If the problem persists after recharging, replace the battery.
The RBM is not properly connected.	Be sure the battery cable is securely connected.

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