We're staying in a property in Yorkshire. Heating wasn’t that great when we turned up so I turned the heating water temperature up on the boiler. Can’t remember what it was but I think I turned it up to around 70°. Worked fine. Going home today so I thought I’d turn it down. Screen display is in red. Wasn’t like that when we got here. I turned it down but it makes no difference. Heating still working fine. Is this normal or has my tinkering done something? It’s an Ideal combi boiler.
