I have an Evohome HR92 Thermostat occasionally deciding to change the set point to 35C local overide is disabled.

Anybody had this problem and how did you fix it, my guess is to invest in another stat also is it possible for me to get a warning text message or email via IFTTT or some other such software when set point is greater than say 20C, if so how? as I have just downloaded IFTTT and it doesnt seem very intuitive.

Many thanks