1. Check whether the battery is installed.

2. Check whether the positive and negative poles of the battery installation are consistent with the positive and negative poles of the battery compartment.

3. Check whether the battery has enough power.

Bluetooth Version:

 1. Check whether the Bluetooth of the mobile phone is turned on.

 2. Check whether the PAIR icon of the thermostat valve flashes, if it does not flash, press and hold the PAIR button for 5 seconds.

ZigBee Version:

 1. Check whether the gateway is powered on.

 2. Check whether the WIFI password is correct.

 3. Check whether the PAIR icon of the thermostat valve flashes, and if it does not flash, press and hold the PAIR button for 5 seconds.

1. Clear the APP cache, log in to the APP again and do the pairing action.

2. Quit the APP and restart the APP to do the pairing and connection action.

3. In the app device list, pull down the page to refresh the page.

4. Please check the distance between the device and the phone.

ZigBee Version:

 1. Check whether the gateway is powered on.

 2. Check whether the door/window sensor battery has enough power.

 3. Check whether the door/window sensor signal light flashes quickly, and whether you press PAIR for 5 seconds.

 4. Clear the APP cache, log in to the APP again and do the pairing action.

 5. Quit the APP and restart the APP, then do the pairing and connection action.

 6. Check whether the router at home is disconnected or the network is unstable.

ZigBee Version:

 1. Check if the distance between the gateway and the door sensor and the thermostat valve is too long, please put it within the working safety distance.

 2. After deleting the device on the APP side, reconnect the device.

 3. Check whether the router at home is disconnected or the network is unstable.

Please buy a branded battery.

1. Check whether the valve model is applicable.

2. Check whether the valve is stuck.

1. Whether the device has been installed on the applicable valve and tightened.

2. Check whether the valve model is suitable.

1.Check the valve stroke is too short or the valve stuck.

2.Check whether the valve type is suitable according to the instruction.