Thermostat not turning boiler off

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dhevans6@gmail.com
Posts: 1
Joined: 08 Dec 2022, 16:01

Thermostat not turning boiler off

Post by dhevans6@gmail.com »

Similar issue to another recent poster but slightly different set up I think.

Thermostat directly replaced a wired analogue thermostat. Has been working for 6 years.

I noticed yesterday that the boiler was on even though the room temperature was way over the desired temperature. Radiators we’re very hot (ie it had been on for some time)
The heat symbol wasn’t displaying, and the app didn’t think the boiler was on.

Rebooted everything (including turning the boiler off, no luck). Ended up reversing the polarity in settings, then reverting it back. This has worked for less than 24 hours, I’ve just had to do the same again.
The boiler is clearly working ok as when the thermostat is working, the boiler is responding to the closed circuit and turning on as expected.

Relay is about 2 feet from the thermostat, which in turn is about 2 feet from my router. As above this has worked flawlessly for 6 years.
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