I have a Vokera Compact HE Boiler? I am having to re-pressurise it every morning? there does not appear to be a leak anywhere? but I have noticed a drip from the boilers overflow? Is the pressure leaking off here? overnight? Is it a known problem with this type of boiler?Red light on control panel every morning, top it up reset and its ok until the morning when red light comes on again?

DaveI, February 2009

sound to me like you pressure relief valve is letting by and will need replacing

tim, February 2009

The expansion vessel needs repressurised to about 1bar

Ainsleys Plumbing & Heating, February 2009