F1 = Battery 1A
F2 = Bell & sounder 1A
F3 = Aux 12V & speaker 500mA
F4 = Keypad network 500mA
F5 = Power supply 1.6A
On the board at CB5, take out the wires to terminals 6 and 7 (counting from left to right) and place a link in between them, see if that works
F2 = Bell & sounder 1A
F3 = Aux 12V & speaker 500mA
F4 = Keypad network 500mA
F5 = Power supply 1.6A
On the board at CB5, take out the wires to terminals 6 and 7 (counting from left to right) and place a link in between them, see if that works