Looking for an Experienced Gledhill Potterton engineer near Cambridge

Hi,

We have a BMII and a Potterton Suprima, both about 12 years old. I've recently resolved the buzzing problem by replacing the capacitors on both BMII circuit boards, so no more buzzing and all seems well.

However the Suprima has now decided to make a odd ticking noise that seems to travel up the pipes to the BMII which is in in cupboard in our bedroom and now its cold and the boiler is firing more (probably twice from about 10:30pm to 7:30 am) its waking us up!

I need an engineer to have a look to see what is actually causing the issue and also we are thinking about a possible descale, so can anyone recommend an engineer near Cambridge or Huntingdon.

Thanks

ticking noises are often caused by pipework expansion, check to see if the pipework is touching any woodwork, if so slide something between them, even a sheet of paper to allow pipe to slid over the wood. If the boiler suffers from lockouts there is a pcb fault with some batch numbers and potterton have been replacing pcb etc.

Hi,

Its not heat expansion, when I say ticking its more like small helicopter is in the boiler! I gets louder as the boiler comes on and then stays loud until it stop firing, much more of a mechanical sound.

Mat

Heres a couple more ideas, moving parts that may produce the sound you describe, primary pump or the fuel fan.

Yes, definitely something that is moving, my money is on the fan.