my boiler is not working a plumber came in and said he thinks it is the circuit board. i am an electrician and have worked on boilers before but i need a diagram to verify if the wires going to and from the boiler are right.
The Boliler in question is a Potterton Suprima 60.

pat shine, December 2009

They do that a lot - boiler engineers - not comfortable with basic electronics - no surprise really.

Take a picture with a digital camera for confidence on reassembly.

Check out this interesting link (slightly related) and consider replacing the electrolytic caps...

http://kaijaks.co.uk/blog/nick/2008/02/10/dodgy-old-boiler

Good luck...

Peccavi, December 2009