You can enable/disable the Valve Detection function on the settings page. In order to prevent the prolonged low-temperature or high-temperature state of room temperature from becoming uncomfortable, the thermostat will remind the user of temperature control abnormality when it detects that the room temperature can't reach the set temperature, after heating is started, for the following possible causes:
A. The thermostat is not installed correctly. It is suggested that you should remove the battery and put it back 30 sec later, then reinstall the thermostat and calibrate it again, and further wait for a period of time, and then observe whether the fault is eliminated.
B. The room temperature is significantly higher than the set temperature due to the incorrect temperature setting. It is suggested that you should re-set the temperature again, wait for a period of time, and then observe whether the fault is eliminated.
C. Valve failure. Please replace the valve, reinstall the thermostat, and carry out valve calibration.
D. The room is too large (the radiator is not matching) or there is too much ventilation in the room. It is suggested that you should replace the radiator or test whether the room door or window is opened or leaking air.
E. The inlet water pressure or inlet water temperature is too low. Please check the inlet water pressure and inlet water temperature.
F. Upon networking with the temperature sensors, no linkage is established with the temperature sensor in the same room, or the distance from the temperature sensor to the radiator is remote (it is recommended that the temperature sensor should be placed in the same room with the thermostat, for a distance of 2-3m from the thermostat).