keston c36

My Keston C36 combi boiler is acting up - the water's getting way too hot. It's hitting around 90 degrees when in use. And then bounces back to 40s. The led indicator for DHW also turns ON/OFF while temperatures bounces. (PFA) Any ideas what might be causing this or how I can fix it? To add...

Hi everyone, I can see a few people had this issue, but its not entirely clear if or how it was resolved, so I'd really appreciate some help here. The symptoms are as follows: Open hot tap DHW demand light stays dark Display temperature remains constant/room temperature Water is cold Central...

Hi All Apologies in advance but I will try and be thorough as it's my first post :-) Need some advice, I have a Keston c36 which has been regularly maintained over the last 10 years since moving into a 6 bedroom Victorian terrace. Yes, many parts replaced and maintain spares just in case ;-)...