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went today before they reset the boiler, there is power to the boiler, pump is free and soon as you turn the fuse switch off and on the boiler works fine till the morning and then it does the same. thought it could be the electric programmer but it does it on hot water. once the boiler was...

please can any one help me? just been to look at a biasi riva 24s and the client says that when the boiler has not been on for a few hrs it does not come on in ch and dhw, so they have to turn the boiler off at the fuse and turn it back on after 30 seconds then the boiler will work fine for the...