Remote may not work due to various reasons. Check if batteries are properly installed and functioning. Try adjusting the batteries in the compartment to ensure proper contact with the springs. Confirm remote compatibility with your equipment. This remote does not require programming unless specified as a universal remote. Ensure the remote is correctly paired with your TV if applicable. In some cases, the infrared receiving diode on the unit may be faulty, especially in older units or VCRs. Model Number: YAC1FB For Tadiran Air Conditioner Compatible Models: YAC1FB, YAC1FB6, YAC1FB9 Battery Required: 2 x AAA (not included) This remote control is compatible with the following indoor models: EACS-07HC EACS-09HC EACS-12HC EACS-18HC ZACS-07 HPF/A17/N1 Color: White Material: Plastic Package Contents: 1 x Air Conditioner Remote Control Note: Light and screen display differences may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.