Ok, a friend of mine told me to turn off all rads upstairs and so only flow will be into UFH system. This appears to have speeded its heating up and something seems to be happening. I just took the cover off the UFH bits and the pump is going and the thing seems to be operating as normal....so...
No idea where pipe that goes outside is but will have a look (3 out of my 4 walls are party walls so not ideal).
I have been pressurising to about 1.8 (about half to two thirds through the dark grey area).
Will look at EV FAQ now as well...
I've just got back from 5 days away and...
Do you mean water or pressure leak?
how do i go about testing for a leak?
i'm guessing a professional would be a good start!
anything i can do before calling someone Monday? There doesn't appear to be any water leaks anywhere in the house!
thanks
Guys - i have exactly the same problem on my ecoTEC plus. I phoned a builder friend who gave the same advice and i managed to repressurise etc with the two valves......however it happened again a few days later after i had done this.
It is now happening nearly everyday. It works totally...