Can anyone advise how to top up pressuer on my combi boiler? Can't see anything which explains where the bits are to do this?

Banner, April 2008

hiya i ahve a combi boiler modena 102 and the red lights on and it wont light the pressure in the sistem is at 1.4 mbar how do i relight the boiler

mick, May 2008

my modena 102 combi boiler wont light the red warning light is on what do i do there is pressure in the sistem what could be the problem

Dawn, May 2008

my modena 102 combi boiler wont light the red warning light is on what do i do

Dawn, May 2008

Underneath the boiler where all the pipes enter, there should be a none return valve with a tap on it. This is usually attached to a silver coloured flexi hose coming off your cold water supply. When system is cold, open the tap slowly and watch the pressure guage on the panel rise to about 1.4mbar then close the tap. be sure to bleed the radiators after doing this when system is hot. Bleeding them will cause the pressure to drop slightly but ideally the pressure wants to be about 1.1mbar when cold and all radiators bled. Hence initially filling to 1.4 to allow for this

Phil Railton, April 2008