boiler control

Hi all. I've got a potterton performa 24 boiler. Now the issue is the heating stays on. I turn the main switches to just hot water and the rads still get hot. I thought it was the diverter valve so replaced that but still the problem persists. I then replaced the timer clock (we don't have a...

Hi folks, I have looked for an answer to this but not come up with anything... maybe some experienced people will be able to advise. I am installing an 8-zone underfloor heating system, with a thermal actuator on each zone. I have a wiring centre that will open the relevant actuator when there...

Hi, I have a Vaillant Ecotec Pro with a simple 24 hour time switch. I'd like to replace this with a modern smart thermostat. Most of the articles I've read mention a c-wire. I'm struggling to work out if this boiler has one. I've got the wiring diagram and it's not at all clear. I'm not sure...

Hi. We have an issue that when the system controller is off, the boiler is still firing up and heating the hot water. Boiler is a Grant vortex Eco external 26-35. Controller is a danfoss with wireless thermostat. Grunfoss pump. All is about two years old. We had the plumber out recently and he...

Hello, I have a bit of a problem. I have a Vaillant boiler, which is great. The Timerswitch130 inside the boiler is terrible. I want to know if I can remove it completely [leaving the fascia exposed] and not replace it, and have the Honeywell control the boiler on its own. The reason I...