Outdoor Board LED only green lights up after startup - No outdoor unit of address 0 / Remote controller transmission wire open

What does 00 mean?

After the initial 'startup' sequence, if only the green LED (LED1) on the outdoor board lights up, it means either there is no outdoor unit with address 0, or the remote controller transmission wire is open.

• There is no outdoor unit of address 0 (address is other than 0).
• Remote controller transmission wire is open.

Click steps to track your progress.

1. 1

   Check the address setting of the outdoor unit and ensure one is set to address 0 if required.

2. 2

   Inspect the remote controller transmission wire for any disconnections or breaks.

3. 3

   Verify the remote controller is properly connected and functioning.