Device state

LED state

Priority

Factory reset

Alternates red and green

1

Device basic functions startup failure

Solid red

2

Joining the Zigbee network

Flashes green rapidly

3

Failure of Zigbee communication with Connected Home Hub1), 2)

Flashes red slowly

4

OpenTherm connection failure

Flashes red rapidly

5

Firmware upgrade in process

Flashes orange rapidly

6

OpenTherm and Zigbee connection successful

Solid green

7

Zigbee network idle

Solid yellow

8

  1. Check if the hub is powered on and try to reduce distance between the device and the hub.
  2. Try network reconnection.
    • Remove the device from the mobile application, press and hold down button on the device for 10 seconds to perform factory reset, and then press and hold down the same button for 5 seconds to re-add the device to the network.

Priority of LED state indication (high to low)

If multiple device states exist at the same time, the LED indicates the state of the highest priority.

For example, if OpenTherm® connection fails when firmware upgrade is in progress, the LED flashes red rapidly rather than orange rapidly.