Hi, I have the above boiler and over the last week or two the red light has started to flash. Sometimes fast, sometimes slow. I have read the manual but it only provides limited information and no suggestions for long term remedy. Resetting does work sometimes but the problem returns. The boiler has also started to make what I would call 'straining' noises when firing up. Any ideas or quick fixes to suggest as to what could be causing this before I get someone in?
Thanks.
Thanks.