Hi,
I've had this 30cxi model for about two years now and have had no major problems apart from the pressure dropping a few times but all ok in that department.

the problem I have now is when I have a shower which is basically a showerhead connected directly to the main bath taps, after about 1 or so, the water goes cold then after about another minute, the hot water comes back. this cycle repeats itself every 1minute or so. What I have noticed however when showering is that all my radiators are also very hot even with the radiator dial/switch on the combi-boiler is OFF. It's as though the how water which should be only going to the Shower is also feeding the radiators. Never had this problem before and have recommended this boiler to friends as the shower pressure is awsome - not so much now as the hot water comes and goes - but the radiators seem to be siphining the hot water which should be for the shower. Any ideas ?

Roger, August 2009

Thanks Guys.

Update. British Gas replaced both the Heat exchanger and diverter valve banck in August/September 09. All seems to be working OK. they also installed a device called 'magna-Clean' filter on the return pipe before it's goes back into the boiler. This is to remove any metal deposits in the heating system

Roger, March 2010

i have had same problem, had my boiler 6 years had part changed twice. I would not touch this boiler again as in 6 years it has had to be repaired at least five times and cost me a fortune. British gas just out and it is the heat exchanger whcih has to be replaced.

k laidler, August 2009

Hi have to agree with ian seems like a problem with diverter or diverter actuator

andy, August 2009

your diverter valve is stuck allowing the water to pas into the radiators, a new cartridge can be fitted to sort the problem.

Ian, August 2009

Hi,
plate 2 plate secondry heat exchanger will be blocked remove and flush out, if really bad might need replacement

AJM, August 2009