Heating mode only.
It also seems not to happen if I drop the thermostat down below 50c (lower temperature) ... But haven't proven this over a longer time yet.
Hi,
I find most answers I need in these, forums, but can't quite work out the answer to my current issue. Hopefully you can help.
I have a baxi duo-tec combi boiler. Circa 12 years old, but still in fine form. It's started making clunking noises on an irregular/daily cycle.
I've had it...