Home / Wiring / 4iE Smart WiFi Thermostat
How to open the main menu
The main menu on the 4iE thermostat is accessed by pressing the lock if it is visable followed by the three dashed lines. Both symbols can be located in the bottom center of the screen. If for some reason the screen is not lit or responding, try a power cycle.
Related:
https://warmupedia.warmup.com/questions/turn-off-backlight-4ie-thermostat/