potterton profile 50e lpg?

You can just see it here behind the wires - centre right

http://kaijaks.co.uk/blog/media/blogs/nick/2008/02/guts.jpg

Peccavi
April 2009

It's inside the lower cover if it's anything like my 100e.

Remove lower plastic cover by undoing captive screw underneath and behind flap and slide cover off forward.

Remove securing screw of electrical carrier plate and lower it down. P Switch towards the rear on right of PCB enclosure - air pipes going to it - sometimes possible to repair it so I've read on here.

Good luck...

Peccavi
April 2009