Hi,

When I switch the boiler on the fan runs for a couple of seconds, then stops for a couple of seconds, then runs again and so on. The pilot doesn't light and the boiler never fires up.

When I switch it on with the front cover removed the fan runs continuously. Does it sound like the pressure switch is faulty? The fan is new by the way, I've just replaced it.

The fan has been doing this on/off thing for a few weeks but up to a couple of days ago the boiler did eventually light.

Thanks in anticipation!

Bob, March 2007

Sorry Bob page number is 1

P, January 2008

Hi Bob, i have the same boiler & problem ! I've added my question if you have the answer can you add it on please? My question is under the heading How can i fix my Potterton Profile 60e, in the search box enter Potterton Profile my question is on page 23 . Hope you can help me !!!!!!!!!!!

P, January 2008

Thanks for your help guys - it was the pcb in the end. Got a brand new one at a great price on ebay.

Cheers,

Bob.

Bob, March 2007

Had same fault on a 50e, changed pcb (£117) as this had obvious soldered joint damage and signs of overheating. Still wouldn't run so changed pressure switch (£40) All now ok. If you cant see any signs of overheating on the pcb then it's obviously cheaper to change the pressure switch first. Mine seemed ok, when I sucked on the tubes I could hear the microswitch operating but these switches work at millibars so you can't really prove anything by sucking unless you have specialist equipment and you know what the correct operating pressure should be.

Steve, March 2007

Check the case seals are sealing; it won't fire else

Mark, March 2007

i had this problem before the fan would go on / off about 5 times then light. when we removed bottom panel it would sometimes light, but if it didn't we tapped the pcb board and it would light.
we changed pcb all ok.
but check yor wire connection and air pipes to pressure switch first. as you have changed fan you may have a loose connection.
pcbs for these boilers are not to steep in price and easy to fit.

hi-spec plumbing, March 2007