Problem with Vaillant eco tec boiler My 10 year old Vaillant Eco Tec Boiler pump/fan occasionally turns on for 10 secs when the cold water supply is turned off at the tap or toilet after use. If the tap is turned off slowly, it doesn't happen. Any suggestions please?
Problem with Vaillant eco tec boiler to read more on the original thread at Plumbing Advice
See also UK Plumbing Advice for all UK plumbing advice needs.
Problem with Vaillant eco tec boiler to read more on the original thread at Plumbing Advice
See also UK Plumbing Advice for all UK plumbing advice needs.