Buttons function：
MODE：used for select indoor operation mode.
FAN：used for select indoor air flow.
SWING：used for setting indoor swing mode.
HEALTH：used for setting indoor health function.
TEMP + -：used for changing set temperature.
CLOCK：used to adjust time.
+、-：stands for time plus/minus, used to adjust time.
TIMER：used to set timer mode.
RECOVERY：used to switch over air-exchanging mode.
CHECK：auto-diagnostic button.
FILTER：filter-cleaned button.
RESET：reset correct mode button.
Display description：
[MODE] [AUTO]：auto operation mode
[MODE] [FAN ONLY]：air-throwing mode
[MODE] [COOL]：Cooling operation mode
[MODE] [DRY]：Dehumidification mode
[MODE] [HEAT]：Heating operation mode
[MODE] [HEAT] [TES]：In heating mode, auxiliary electric heater is running. Only when the
unit with auxiliary electric heater is in auxiliary electric heating mode, it will display.
[FAN] [AUTO]：auto fan running
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