User Manual Frigidaire FFTH1222R2 12,000 btu built-in room air conditioner

For most air conditioners, the filter can be found by opening the front panel. Since it’s a reusable filter, you can simply remove and clean using warm, soapy water. After cleaning, allow the filter to dry thoroughly before replacing it. You may also vacuum the air filter to remove excess dirt and particles.
For more details regarding the air filter in your specific model, please reference your Use & Care manual.

When this mode is enabled, the selected temperature will increase by 2 °F 30 minutes after the mode is selected.
The temperature will then increase by another 2 °F after an additional 30 minutes. This new temperature will be maintained for 7 hours before returning to the originally selected temperature.
This ends the “Sleep” mode and the unit will continue to operate as originally programmed. You may also cancel sleep mode at any time by again pressing the sleep button