01 - Panasonic Air Conditioner Remote ControlFirst, try replacing the batteries in the remote control. If installing fresh batteries doesn’t solve the problem and you can still operate the air conditioner manually, the remote control might be defective. If you think the remote control is defective, replace PartAir Conditioner Remote ControlEnter model number to search for the required part specific to your product Most Common Solution02 - Panasonic Air Conditioner Main Control BoardThe main control board has an infrared receiver that receives signals from the remote. If the infrared receiver is not working, the remote control will not be able to communicate with the control board. If you suspect the main control board is defective, replace PartAir Conditioner Main Control BoardEnter model number to search for the required part specific to your product Most Common Solution