Hot water Problem (Err its Not Hot)

28 Nov 2003
Reaction score
United Kingdom
I have replaced a digital programmer with a new model. Moved the Fused switch from the right to the left of the programmer, and now I have no hot water.

Right, thats the problem, When the program runs the boiler also runs OK but no Hot Water and if I press the Boost button (when all is cold, ie Central Heating and Boiler) on the programmer for the hot water the boiler bursts into action fires up and runs OK. But no Hot Water. All the central heating is working Fine.

Have I cross wired or have I a Air Blockage? Help as the Wife is about to Kill Me.......... :eek:
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Was the programmer a straight swap???

If not you have it wired wrong!!!!

What make was the old timer???

What make is the new one???
Disconnect the boiler, and check the pump is rumnning and that the valves operate correctly. The reason for disconnecting the boiler is to get rid of some of the noise.

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