How to configure the 3 fan speed without resetting the nest

The most powerful adapter for smart thermostat, such as Nest, Ecobee, Honeywell, Tuya, HD, Orvibo, Mcohome, Morggen, Lutron, Savant, Crestron, Control4 etc. For the air conditioner side, it can service for FCU, 0-10V modulation valve actuator, and also for VRV/VRF/DUCT/Wall mounted inverter air conditioner. The brand will include: Daikon, Mitsubishi Electric, Mitsubishi Heavy, Toshiba, Ogeneral, Fujitsu, Panasonic, Hitachi, Hisense, York, Trane, LG, Samsung, Gree, Midea, Hair, AUX, Lennox, Supper general, OG. It also support the multi equipment control, such as air conditioner, boiler heat, ventilation in one smart thermostat, one adapter. Core Feature: 1.Stability and reliability, with continuous updates and upgrades for up to 8 years. 2.Easy install, just plug in and play without any configuration; 3.AC24V power inside, do not need additional transformer; 4.Wide brand and models used; 5.Suit for 3 fan speed, mode change, different set point, not the simple on/off; 6.Keep the inverter function, help you more saving and comfortable.