My frost stat dial has cracked, so I can't tell what it is set at. I turned it down 'a bit' as it was on with a garage temperature of 10ºC last week. It was left over from the previous boiler. However, the Keston Celsius 25 manual says the boilers have built-in frost protection.
Do I need to replace the frost stat?
Do I need to replace the frost stat?
