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Valve control option
（B1）
0 represent valve is controlled by the thermostat ；
1 represent valve is not controlled by the thermostat, it’s always closed。
Anti-freezing
(Descaling function)
function option（B2）
0 close，1 open。
Anti-freezing function：when valve is continuously closed over100 hours，it will be opened
for3 minutes。
GA/GB option（B3）
0-GA：valve switch protection time is about 3 seconds;
1-GB：valve switch protection time is about 15 seconds；
GB：no anti-freezing function
°C or °F（B4）Celsius degree or Fahrenheit degree
Restore factory(b 0 5 )
Display A o,Long press wind speed key whole show Restore factory
Cautions on Installation and Use
1. To prevent the thermostat display from a high fluctuation, special treatment has been made to the program. Therefore, it is normal that
the thermostat cannot immediately display the sudden change of temperature.
2. The thermostat installed on 1.5m above the ground.
3. For the thermostat installed,please take care not to install it to the wall corner, door / window side or behind the door or in such
unheated area as exterior wall. Avoid hot / cold air duct, radiator, flue or thermal pipe.
4. If you have any problem for the installed ,please contact our company hysen, we will make a demonstration for you
5. Only the professional technicians are permitted to open the transmitting and receiving box of the thermostat for installation. When
installing the power supply, make sure that the power cable is well insulated.
6. The thermostat is unrepairable product. The user shall not open the internal circuit board.
7. Before installing the thermostat, make sure that the system is disconnected. The maximum voltage of the system shall meet the
requirements specified in the Instruction Manual (Max. AC Voltage: 250V).
