Riello RDB 2.2 burner

[Patrickster]

Hi,can anyone help?when I switch on boiler(cold) in morning it will try starting,fire and cut out(not lockout)after 2secs or so and keep doing the same thing for about 15mins and will then fire and work no problem for rest of day,next day same,I took photocell out,put bright LED torch to it and it fires no problem,would appreciate any suggestions,thanks, This problem is only in morning when cold

 

[Patrickster]

Hi Oilhead thanks for your reply,was away for a few days,I have 2 filters on supply line,one at tank outlet(checked and cleaned) and one just before flexihose on boiler (which I replaced) same result.It is like the flame is not bright enough on initial start in the mornings for the photocell,like I said if I trick the photocell by exposing it to daylight on ignition,it will start no problem,if I leave it running for a few minutes like that and put the photocell back in place it will start and run all day with no problem until initial start up in the morning,would appreciate any suggestions,I`m going to get new nozzle tomorrow or am I wasting my time?