I have a Potterton Puma combi boiler that is now 12 years old. I know I should buy a new one, but cant afford it at all. The heating comes on and then goes off after 1 min to 30 seconds sometimes. We have changed the overheat stat, thermo couple, d.h.w/c.h temp sensor, checked the circuit board for dry solders but nothing. Now after changing these things the pilot light goes out when the heating has been put back on and takes a long time to light. The water works fine, but now I am left with no heating. Please help

Michelle McLaughlin, September 2010

hi,i have a potterson puma 80 boiler had a lot of work done on it now that the plumber has gone went to switch the timer on for the next day got up and no heating on checked the timer and it had not moved, so is it the timer or something else

tony, February 2012

Thanks i changed the diverter valve and it wasnt that. Will try the pump. Not much else to change now only had a new pump two years ago oh well lets give it ago thanks for help

Michelle, September 2010

Its the wax capsule divertor valve

gasman 064, September 2010

sounds like you need a new pump

Ian, September 2010