| Item | Description |
| 1 | Up key: in the cooling/heating mode, it is for raising the setting temperature. When setting the program and changing the system parameter, it is for adjusting the parameter. |
| 2 | Down key: in the cooling/heating mode, it is for lowering the setting
temperature. When setting the program and changing the system parameter, it is for adjusting the parameter.
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| 3 | F key: in the cooling/heating mode, It can be used for inquiry and reset Filter Usage Days. |
| 4 | SET key:to enter the parameter changing interface or enter the programming mode |
| 5 | HOLD key:In the cool/heat mode, Press it only once, the LCD display "hold",and the thermostat will keep the set temperature. |
| 6 | Run key: Press only once,the thermostat operates according to the time programming.After setting the program and changing the system parameter,press the run key to save and exit the setting interface. |
| 7 | FAN Swith:For setting fan speed. |
| 8 | SYSTEM Switch:For setting mode. |
| 9 | Fan Operation Switch:Electric or Gas Setup. |
| 10 | Clock/Week: Display the current system time and week. |
| 11 | Program setting: it shows the system is in the setting process |
| 12 | Temperature: Display the room temperature or setting temperature. |
| 13 | Cool symbol: The cooling relay start to work when the symbol displayed.The symbol flashing means the cooling relay is in the set-up delay process. |
| 14 | Heat symbol: The heating relay start to work when the symbol displayed. The symbol flashing means the heating relay is in the set-up delay process. |
| 15 | Battery symbol: it means low power when the symbol displayed, so please change the battery in time. |
| 16 | Fan: display the current mode of the fan. |
| 17 | Hold symbol:when the symbol displayed, the setting temperature will be kept, and won't follow the setting program. |
| 18 | Filter symbol:when the symbol displayed, it means the number of filter usage days reach the set interval time.
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