Remote may not work due to various reasons. Check if batteries are properly installed or try rolling the batteries in the compartment to ensure proper connection. Ensure the remote is compatible with your equipment and does not require programming unless specified as a universal remote. Pairing may be required with your TV. In some cases, the unit's infrared receiving diode may be faulty, especially in older units or VCRs. Model Number: YAC1FB Compatible with Tadiran Air Conditioner 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 display differences may cause slight color variation between the image and the actual item. Measurement may vary by +/- 1-3 cm.