Override button heating temperature?

Hi David,

You are truly a modern-day hero. I'm just about to investigate the tenant's boiler - with a view to following your instructions to change the capacitor (digistat has lost connection and won't reconnect) - but I was just wondering (as we've been using the override button for around six years now, instead of the room controller), how hot would the heating go using the override button? I mean would it result in colder heating than if you were using the thermostat and pumping it up as high as it would go, say?
Thanks,
Hayes