The heating ignites as it should, and works fine, but when we only want to get hot water(dual heating and hot water option on), when we turn the tap on, the boiler does not ignite. We can trick the boiler to get hot water when the heating is on, when the the boiler has ignited, but this is intermittent (ie water comes out warm, then hot, then luke warm etc).

Any thoughts on cause of problem? Some dodgy switch somewhere?

vanessa, December 2008

check the micro switch in the bottom right hand corner is working(switch it by hand to see if boiler lights up). if the lever is not making it opperate it could be the diaphram
ive had this same problem, remember you should use a gorgi engineer but im not here to quote laws ha ha

daz, December 2008

Holed domestic hot water diaphragm or dodgy domestic hot water microswitch.

c, December 2008

Holed domestic hot water diaphragm or dodgy domestic hot water microswitch.

c, December 2008