I have an Ariston Genus HE Combi boiler fitted three years ago and have nothing but trouble with it. the firm that supplied and installed it it has gone bust so the 5 year warrantee is lost. The problems I have had since new have been if I turn the central heating temperature dial on the boiler to less than 70 deg it makes a load vibrating noise and says either flame lift or pump over ride and switches off. Now I have a problem with the Hot water in that it runs for a min or so then comes up with pump overrun, resets itself and runs for a further minute or so and then the same again ad infinitum. As per the other Ariston topic listed my boiler also sometimes comes on in the middle of the night for no reason and I have to switch the power off and on to stop it as turning down the thermostat does not switch it off. The heating sometimes does not switch off at the temperature set and carries on. turning down the temp set does not affect it and I have to switch off the power supply to reset it. (could this be a dodgy control hand set). I am due to have it serviced and would like some suggestiions as the cause, so as I can discuss it with the plumber.