Hello
We have a Valliant Ecotec 831 in the loft. A few times last winter and more regularly this last week or two the boiler switches itself on and stays on. It's connected to Hive and that is switched off on the schedule, the only way to reliably stop it heating it to turn off the boiler directly or gas. Happening particularly overnight and obviously it's baltic this week...
We had a heating engineer out yesterday who didn't even look at it. He just said it could be PCB or diverter valve but no way to tell and consider Valliant one off repair service.
Any other thoughts/suggestions? I'm wondering if frost protection is kicking in then not turning off?
We have a Valliant Ecotec 831 in the loft. A few times last winter and more regularly this last week or two the boiler switches itself on and stays on. It's connected to Hive and that is switched off on the schedule, the only way to reliably stop it heating it to turn off the boiler directly or gas. Happening particularly overnight and obviously it's baltic this week...
We had a heating engineer out yesterday who didn't even look at it. He just said it could be PCB or diverter valve but no way to tell and consider Valliant one off repair service.
Any other thoughts/suggestions? I'm wondering if frost protection is kicking in then not turning off?