i have a fer falcon combi and when the heating goes of on the timer there is also no hot water. if you then turn the heating back on then 30 mins later we have hot water again is there any easy answers to this problem.
check the aquastat setting. there is a coil inside the boiler that detects cold or cool water and is supposed to turn on the boiler and heat water to the setpoint on the aquastat. if the aquastat is shot then no signal will be sent to the boiler controls.