Main Power Loss

What does MAINS (Power Loss) mean?

The main power supply to the phone board is disconnected or unavailable, causing the system to operate on backup battery power. This state is indicated by the MAINS LED blinking (Green). While the system remains operational, this signifies a critical power interruption that requires attention to ensure long-term functionality.

• The main power cable providing power to the phone board is disconnected or has a loose connection.
• An external main power supply unit (if applicable) has failed or is not providing output voltage.
• The circuit breaker or fuse protecting the main power supply line to the phone board is tripped or open.

Click steps to track your progress.

1. 1

   Verify the main power cable connection to the phone board is secure and properly seated.

2. 2

   Check for voltage presence at the main power input terminals on the phone board using a multimeter.

3. 3

   Inspect and reset the circuit breaker or replace the fuse in the facility's electrical panel that supplies power to the phone board.