You may not want to hear this but...Until recently I had a five-year old Potterton boiler. It never worked properly. Potterton engineers attended several times and replaced the PCB, and other parts. It still did not work properly. I got two other local gas engineers to look at it, both more than once, both checking with Potterton technical support and following their advice, both changing parts, and both failing to sort out the problem.I didn't want to give up the fight but my wife said life's too short and I was throwing good money after bad, so recently I changed the boiler to a Vaillant. I have not had a problem since. Have we just been unlucky? No. Google Potterton and see how many others report similar problems. Or go onto Watchdog's website and see their reports.
David Parry ● 6200d