I have a similar problem, i've got a WORCESTER HIGHFLOW 400 ELECTRONIC RSF COMBI BOILER, but the problem is that, when i turn on the heating, after 8 - 10 mins the red CH(central heating) light on the boiler just above the temp control dial starts to flash red. The hot water light above the hot water dial doesnt flash at all. It works fine for a good 8 - 10 mins then locks out and the light starts flashing. Another thing is that if i turn on both the heating and hot water, and if i open the hot water tap (the red light on the boiler comes on, this is fine) the hot water comes as normal, but the radiators dont heat up. I dont know maybe this is normally supposed to happen. Anyway the real problem is that it keeps locking out after about 10 mins, Any ideas? Please help.. I don't know what to do. Thank you.
Kaiser, December 2008
