Urgent query- using smart thermostats with internet down

YNS
YNS
Hi

I have smart radiator thermostats and a wireless thermostat but my internet is down. It won’t be resolved till Tuesday so I need to urgently work out how to use my heating. I read somewhere manually adjusting the radiator thermostat should work but it doesn’t seem to be for me on any of my radiators. Any ideas what I Can do?

Answers