main 24he combi not firing

[jayski]

hi all maybe someone can shed some light on this issue. my combi will only fire up for 1 secound then cuts out it trys again after about 20 secounds but just does the same. so it lights and burners ignite and then fails. does exactley the same on dhw and ch . what do we think

cheers

 

[Agile]

We think that its gas/combustion and that you need to call a gas reg engineer!

Tony

 

[bolshy]

Yes, we do

 

[Jamesie]

Is the fan spinning? Could be a buggered pressure switch.