!!
critical Logic Power
Error Code Error LED is illuminated
An internal UPS error has been detected.
? What Causes This
Malfunction or failure within the unit.
✓ How to Fix It
Do not attempt to use the UPS. Unplug it and have a service technician inspect the device immediately.
Source: page 31 of the official manual
From the manual
This error code appears in:
Logic Power Lpm Psw 1500va Uninterruptible Power Supply