problem with loud clunking noise.
when boiler is in ch mode and you open a hot tap, a loud clunking noise comes from boiler. when ch off and you open hot tap, clunking noise doesnt happen.
also when this happens, pressure gauge goes mental.
blockage? diverter valve?
any input would be appreciated
when boiler is in ch mode and you open a hot tap, a loud clunking noise comes from boiler. when ch off and you open hot tap, clunking noise doesnt happen.
also when this happens, pressure gauge goes mental.
blockage? diverter valve?
any input would be appreciated