my potterton prima 50f when turned on the fan engages for a few seconds then nothing, it keeps retrying but no spark or ignition.every time it retries the fan engages but stops after a few seconds, any ideas?? william
fit a new electronic control (PCB) and it will work fine
keith, September 2009
its a circuit board problem on the prima when the fan seeks, it'll start slow then whoosh full speed, then drop off again and keep repeating as if it gets full voltage every few seconds to spin the fan properly.
t, September 2009
aps is Heating Engineer shorthand for Air Pressure Switch
Jargon Buster, September 2009
checked the aps
hi-spec plumbing & heating (essex), September 2009
