A3 - 2 red flashes, 5 green flashes — Line busy, no data transmitted

What does A3 mean?

This error means that no data could be transmitted for an extended period (8 minutes), likely due to issues with the M-Net connections.

• Problems with M-Net connections (TB7 and TB3)
• Communication line is constantly busy
• Interference on the M-Net line

Click steps to track your progress.

1. 1

   Check the M-Net connections at terminals TB7 and TB3.

2. 2

   Ensure the wiring is secure and free from damage.

3. 3

   Verify that no other devices are overloading the M-Net communication line.

4. 4

   Reset the system.