Hi,
I have an Alpha CB24, it is 12 years old and is being stored in the utility room. It stopped working for both hot water and central heating. I restarted it several times and it helped for a day or two, but then problem comes back. I observed that before boiler switches off it shows red overheat lamp, but it switches off each time appox. after 1 min. Any idea what may be the issue?
Sam
Hi Sam
I think it will be either air pressure switch or some-kind system block. I think I would check if it is air pressure switch myself/replace it if necessary, but if not I would call for a specialist because blockages need more experience, and all boiler checks need to be done afterwards.