i Have a fault on a potterton performa 28 when the hot water is running the central heating was getting warm,
I changed the diverter valve now when the central heating is turned on the temprature rises the 80 light comes on and the boiler switches of cools down then restarts back up and the same happens ,also switches on and off when hot water is being used.
I changed the diverter valve now when the central heating is turned on the temprature rises the 80 light comes on and the boiler switches of cools down then restarts back up and the same happens ,also switches on and off when hot water is being used.