Recent content by Matthew Taylor

Solved, the installer left link 24 on the PCB board installed. This is for the 24v thermostat.

Will check this later. Possibility as I have had to change one already

Drayton lp241 and standard room stat and cylinder stat. There is a separately controlled underfloor heating circuit on its own zone and controlled via heatmiser

Hi. I have a valliant eco tec 937 that keeps firing up to temperature although neither the heating or hot water is calling for heat. The boiler will run up to temperature without circulation then switch off. The screen is showing the radiator symbol continually. Any ideas, possible wiring?