POTTERTON PERFORMA boiler that will not stay powered on if the gas solenoid valve is connected

[pedroash]

I have a POTTERTON PERFORMA boiler that will not stay powered on if the gas solenoid valve is connected
I have changed the pcb and it did work for 1 day but now it’s failed again with the power led not staying on, and will only stay on if I disconnect the gas solenoid valve

The fan spins up fine but once I connect the gas valve the power led goes out

If I leave the boiler off for an hour or so It will sometimes run for a few hours before failing again

Do I need to get a new gas solenoid valve ?

 

[ShaunCorbs]

Are you gas safe ?

 

[SimonG]

New pcb, old one must have been duff.

 

[Riley]

Are you gas safe ?

Guessing that’s a no