I have lost all hot water and central heating and could use some help. I have power to the fused spur and also to the timer/controller panel (Drayton lifestyle). When the panel calls for either hot water or central heating nothing happens. The boiler has no power to it and the pump does not run. Tried an alternative timer/conroileer and no diffence. System is gravity hot water tank with tank stat, 3 way valve. The wiring junction box in the airing cupboard has power to the common live connection. Any advise?