cancel
Showing results for 
Search instead for 
Did you mean: 
Replies are disabled for this topic. Start a new one or visit our Help Center.

Constant HW ON signal

Rich9
Community Member

I have a Nest 3rd Gen Learning thermostat. With both CH and HW selected OFF and the boiler switched OFF, something occasionally causes the Nest to send an open signal to the HW motorised valve. The valve doesn't like a permanent ON signal. It starts buzzing and overheating. It seems to be associated with this yellow icon on the screen for which I have failed to find any decode.

Screenshot 2022-08-22 at 16.07.35.png

I think it may be associated with a power cut or an interruption to the wifi signal.

Anyone know what's going on here and what I can do about it? 

0 REPLIES 0