P.c.b.; Selector Switch - Potterton Gold 24 HE Installation & Service Instructions Manual

12.0 CHANGING COMPONENTS
12.21 P.C.B. (Fig. 67)
1. Note the settings of the temperature control knobs,
rotate them fully anticlockwise and carefully pull them
off the drive pins.
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. 65).
3. Note the position of all plugs and wires on the
P.C.B. and disconnect them.
4. Undo the securing screws and remove the P.C.B.
Transfer the control knob drive pins to the new P.C.B.
and turn them fully anticlockwise.
5. Reassemble in reverse order, ensuring that the
temperature controllers are reset to their previous
positions.
12.22 Selector Switch (Fig. 67)
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. 66).
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.
Publication No. 5116282
Control Box Cover
Fig. 66

P.C.B.

Selector
Switch
Facia
Selector Switch Knob
Fig. 67
Drive Pins
Temperature Control Knobs
41