Myson Apollo Fanfare intermittent fault

[Vinceh]

Boiler normally runs ok
But about every 7 days it will start up for a short while then refuse to light up any more even by changing the hi/lo switch and /or turning the boiler off at the wall timer
The hi/low switch clicks when move but no firing up
If i bang the outside casing of the boiler then it starts as normal and continues to until about another 5/7 days and i have to do it again
Any ideas please?

 

[gasright]

don't these boilers have a venturi problem

 

[spacethegas]

I've worked on these with a similar problem.
there is a possibility its quite serious.
i wont go in to details here but it would be best to get in a registered guy.

 

[namsag]

If your Banging it on right hand side, problem with air pressure switch staying made after being previously on

 

[Vinceh]

Why does it only happen only occasionally
Is it dirty or just worn out?
So if it is the asp is there a test?
Can it be repaired or does it mean a new one?
Thanks

 

[namsag]

They just wear and contacts inside stick, but its only a suggestion it may be a loose wire or even faulty contact on the board . One of those faults that you need to be in front of to do various tests.