Why is the PROLiNK MASTER II UPS beeping every 2 seconds?
- KKimberly JohnsonSep 5, 2025
If the icon and a warning code are flashing on the LCD display and the alarm is sounding every 2 seconds, it could be due to several reasons: * The EPO function is activated. Set the circuit in closed position to disable EPO function. * Line and neutral conductors of the UPS input are reversed. Rotate the mains power socket by 180° and then connect to the UPS system. * The external or internal battery is incorrectly connected. Check if all batteries are connected well.













