Recent content by Jim1958

This is not a new installation and has got to this situation from November 2010

Hi I'm new to this so bear with me. I have a Vaillant 828E combi boiler Central heating operations seam to work fine but when hat water is required for the showers the temperature goes up to about 70 degrees then the burner shuts off for about 5 seconds and the temperature drops by about 5...