I currently have the above domestic boiler, which is approximately 4 years old. Recently I have been having problems with the hot water, when the hot water is running, it will loose temperature dramatically and the water will go freezing cold for about a minute, the boiler will indicate a fault code of E34, when the water comes back to required temp, the code goes off, the above normally happens when running the bath or shower.

Would you be able to give an indication to what the fault would be?

chris jones, September 2010

i have a reno he30c combi boiler and when i flick the switch to turn my heating on its not turning it on i was told by power minster if this happens then try to switch heating on by the thermostat in the hall but its not doing it eather have you any suggestions on wot else i can try as im cold thankyou

sara, September 2010