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. |