Sorry, I'm a newbie but just wondered if anyone had some thoughts on this.
My Vaillant Ecotec 831 boiler was installed a year ago. In the summer it needed topping up once or twice and over winter when the heating was on it was falling from 1.1 to 0.4 bar over the space of a month.
Three weeks ago the heating engineers fixed a small connection on the radiator and added sealant to the system.
Now the pressure remains around 0.9 - 1.5 bar but when it's been off for a while it falls to 0.7 and starts flashing.
If I then put the hot tap on the central heating pressure rises back to 1.1 immediately.
Any ideas on why the pressure would fall when it's off and why turning the tap on might fix it? Something to do with the diverter valve??
Thanks everyone!
My Vaillant Ecotec 831 boiler was installed a year ago. In the summer it needed topping up once or twice and over winter when the heating was on it was falling from 1.1 to 0.4 bar over the space of a month.
Three weeks ago the heating engineers fixed a small connection on the radiator and added sealant to the system.
Now the pressure remains around 0.9 - 1.5 bar but when it's been off for a while it falls to 0.7 and starts flashing.
If I then put the hot tap on the central heating pressure rises back to 1.1 immediately.
Any ideas on why the pressure would fall when it's off and why turning the tap on might fix it? Something to do with the diverter valve??
Thanks everyone!