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 | |