My condensing boiler keeps cutting out. The boiler has been off for six months while I renovated the property. The radiators have been removed and will be replaced later this year. Currently the pipes leading to the radiator points have end stops on them. I only want to have hot water at the moment. When I started the boiler up for the first time I set the water pressure too high and it cut out. I then set it to 1 bar and everything worked for about 5 minutes until the system cut out again. I noticed the the pressure was creeping up to 2 bar again. I've turned everything off until I have more knowledge. Hoping you guys can help.
What possible causes are there? How to I test them? I could call an expert but I have that DIYers desire to save money until its the only option.