A belated update (I forgot this website URL!)
We've had a good week of the boiler working fine, without the need to increase the pressure.
Unfortunately it was off again yesterday, but seems to be fine again today.
The pressure level tends to settle around 0.5-0.6 when running ok. When...
Thanks for all the advice. I've stopped experimenting with it until I get someone out to look at it.
We have had periods since where the boiler has fired up with a minimal increase in pressure, and has stayed on for an hour or so. However, when returning to it the pressure is around 0.4, or...
As it's dry today I can tell whether the copper pipe is leaking better.
I upped the pressure on the boiler to about 2.0 at the most, and there is some water coming out of the pipe. Not a lot though, just a slight trickle.
It's the - button. I'd raised it above 3 a few times and the amount of water definitely from the pipe is pretty small.
I'll carry on with it tomorrow as it's dark now and the boiler is located under the house.
Thanks for the help.
There is a small amount of water that has come from it, although it's hard to tell as it's raining today.
Could this have been caused by me raising the pressure too high though?
My Vaillant EcoTec Pro is losing pressure. I'd had the problem once before, and after finding advice online I upped the pressure by turning the tap underneath the boiler, and all was well.
A few months later it has happened again. I have boosted the pressure and the heater fires up. The light...