I changed a 3 way valve over for a mate (im a sparky not a plumber!). For some reason the valve moves to the correct position when the buttons are pressed (i.e. moves to 'h' when heating is pressed, etc) but for some reason the boiler and pump only kick in when heating is selected. apparently he's never been able to get a hot bath but could have hot water for the kitchen sink.
Any help here pls folks?
Any help here pls folks?