Technical data

14.0 Changing Components

14.18 Main PCB (Fig. 76)

1. Note the setting of the temperature control knob. Rotate

the knob fully anticlockwise and carefully pull it off the drive

pin.

2. Completely undo the screws securing the control box

cover and release the cover retaining barbs from their slots.

Disengage the rear of the cover from the control box hinge

pin (Fig. 75).

3. Note the position of all plugs and wires on the PCB and

disconnect them.

4. Undo the securing screws and remove the PCB. Transfer

the control knob drive pin to the new PCB and turn it fully

anticlockwise.

5. Reassemble in reverse order, ensuring that the

temperature controller is reset to the previous position.

6. Ensure that the DHW potentiometer is fully anticlockwise

once the new PCB is fitted.

14.19 Selector Switch (Fig. 76)

1. Note the setting of the selector switch knob and carefully

pull it off the facia.

2. Completely undo the screws securing the control box

cover and release the cover retaining barbs from their slots.

Disengage the rear of the cover from the control box hinge

pin (Fig. 75).

3. Note the position of the electrical connections and the

orientation of the switch. Remove the electrical connections.

4. Remove the screws securing the switch to the facia panel.

5. Fit the new switch, ensuring that it is correctly positioned

and reassemble in reverse order.

Control Box Cover

PCB

Selector

Switch

Facia

Selector Switch Knob

Temperature Control Knob

Fig. 75

Fig. 76

Control Knob

Drive Pin

DHW

Potentiometer