A good place to start when the heating goes off is to check the boiler pressure or your thermostat, this checks issues with the thermostat or low water levels. If this doesn’t fix the problem then a potential cause includes broken diaphragms, airlocks and failure of motorised valves. If this is the case, we recommend calling out a gas safe engineer to replace any broken parts.
Commonly when the pilot light goes off it can be down to a few things. The flame has been blown out by a draught in the boiler, the thermocouple is broken and needs a replacement or the limescale has built up to a pint on the pilot light that it just needs a clean.
All condensing boilers, weather combi, system or regular have a condensate pipe which transports acidic water, caused by waste gas, away from the boiler. In most cases, this pipe will run outside into the drain. Due to its location it faces the risk of freezing during the winter months. To prevent this, you can thaw out a frozen condensate pipe using a hot water bottle or warm cloth etc.