Potterton Boiler not firing up

What is the model of this boiler? I have a 33 year old Potterton floor standing boiler and I *may* have a wiring diagram for it..

I'd see that the timer is set correctly. Next I'd check the boiler thermostat, cylinder stat (If fitted) then the Honeywell valve. Obviously the problem could also be the wiring going to any of these devices.

Even if the Honeywell valve is faulty, these can be bought cheaply on ebay.

sponix

Most likely the thermocouple. That's the device which pokes into the pilot light and has a thin copper tube going to the gas valve. It senses the pilot light being alive and well and then allows the gas valve to open on demand. If it's faulty, the gas valve won't open.

You'll get one from some B&Q etc, or any PM for a few quid.

I'm pretty sure that on these boilers, if the thermocouple fails then the pilot light will also go out.

sponix

That's even older than my Kingfisher. It's not quite 30 years old but still going strong.

Any advance on 33 years?

Still got the original installation instructions for it, complete with pencilled notes made by the plumber!

The card I have gives the model as a "Potterton Kingfisher CF45 & 55".

The timer is correctly set and there is no obvious fault but I'm no expert.

The documents I have cover the C40/12 (Which I have), C50/12, C70/21, C80/23 and C95/28 models.

sponix

True but in this case the pilot is fine. So its a) External ( test incoming electrical supply). b) The thermostat (does it click on and off? - is power sent to the gas valve solenoid). c) The gas valve/solenoid (they can sometime still be heard to click but not pass gas).

This is a low tech boiler. The only electronics will be an RF supression cap.

A replacement thermostat if you can track one down is sub £20. A replacement gas valve would be sub £100.

Try looking at

Ian

Try looking at

Ian

Try looking at

Ian