Worcester 24cdi problem (flashing slow)

[fazer]

Hi
I don't know if this has been covered before but, my Worcester 24cdi keeps tripping out on hot water only, on central heating only, and also when both on together, you can see the burner burning and also the spark sparking but it keeps sparking like trying to ignite then it just trips out and the burner goes out, pump keeps pumping tho, anyone help and tell me what i need to do to cure this prob? thanks
A.

 

[kevplumb]

try a search

 

[holty]

if it keeps sparking when lit.could be flame rec.could also be other factors needs an rgi to have a look.

 

[nicknox]

You need to get the flame sensing electrode checked for correct positioning and continuity. If thats all ok then your looking at a fault with the pcb. Get it checked first for correct burner pressures. A service might be in order?

 

[bengasman]

Could be various things, none of them in the diy sphere.