Thank you for initial reply which helps somewhat. Given that there are other sensors at play do you have any advice on how to isolate them so that I can pursue the root of the problem. I accept these are safety features but what would an engineer do in pursuit of the problem?
would turning down the heat control improve the situation. As we arte now in Summer (no heating on) is the boiler too efficient for just the hot water loop?
I am happy to rate your answer as requested.
Thank you for your support.
Didn't know my first reply went through, apologies for repeating it. The system tried to ask for more money but then I realised I hadn't submitted my rating.
Yes I do have a multi-meter.