my cental haeting ia playing up , i think th esyncro motor is perhaps sticking ie not fully shuting off heating port when only the hot water cylinder is calling for heat , is this correct assumption as when even my thermosat in hall is set to low the systenm is still haeting up the radiators , any ideas please

raj, January 2006

yes

gas man dan, January 2007

definately if no wiring has been altered this is the problem

mike, January 2006