Hi there @Simon9 , thanks for reaching out here. I am sorry to hear you are facing difficulties with your thermostat. No worries, I'll do my best to assist you with it.
Has any work been done recently on the system or power cuts in the area before this behaviour occurred?
We can do a quick test on the Heat Link to see how it behaves using the Nest app. o Next to the Heat Link and open the Nest app on a mobile device:
1. Select your thermostat to access the heating controls and make sure the screen is black, heating is off.
2. Turn up the temperature until the display goes orange, heating on, and listen for a clicking noise.
3. Turn the temperature back down until the display is black again, heating off, and listen for a clicking noise again.
This is just so we can get an idea on the clicking noise from the heating side. For the hot water:
1. Go to the Nest app and select the hot water control.
2. Tap on the cogwheel in the upper right corner to go into the hot water settings and toggle the first option there off. This will turn off the hot water schedule, you can enable it back after the test.
3. Boost the hot water for any amount of time and listen for a clicking noise.
4. Turn the boost off and listen for a clicking noise again.
Let me know how it goes.
Thank you for all the input @Frustratedddd , the assistance is always appreciated.
