The 2021 manual mentions a few undocumented shortcuts:
Use the MODE button to cycle through AUTO (intelligent sensing), COOL (snowflake), DRY (dehumidify), HEAT (sun), and FAN . zh lw03 remote control manual 2021
The original “zh lw03 remote control manual 2021” is rarely hosted on brand websites because ZH is an OEM manufacturer. However, you can find the exact PDF via: The 2021 manual mentions a few undocumented shortcuts: