Outdoor Unit Protection Device Connector Open

What does F9 mean?

A protection device connector on the outdoor unit is open, preventing proper system operation and communication. This leads to the remote controller displaying 'PLEASE WAIT'. The outdoor board LED will blink green once and red twice alternately after system startup.

1. 1

   Locate and visually inspect all protection device connectors on the outdoor unit for disconnections or looseness.

2. 2

   Securely reconnect any identified open protection device connectors on the outdoor unit.