© Baxi Heating UK Ltd 2009
10.0
Changing Components
38
Centre
Pin
Retaining
Rivet
Fig. 108
Fig. 109
Fig. 110
Fig. 111
Fig. 112
Fig. 113
10.1
Changing Components
1. When changing components ensure that the gas and
electrical supplies are isolated before the work is started.
2. Before changing any components please read Section
1.3 Important Information.
3. Remove the outer case lower door panel (Fig. 108).
4. Remove the outer case from the boiler by unscrewing
the two screws and lift the case clear (Fig 109).
10.2
Replacing the Circuit Board
1. Ensure that the electrical supply is isolated.
2. Remove the cover from the front of the controls box
(Fig. 110).
3. Release the mains cables from the cable clamps and
unplug the mains connection blocks from the circuit
board (Fig. 111).
4. Remove the screw retaining the thermostat control
panel and slide the circuit board from the box.
5. Carefully withdraw the centre pin from the retaining
rivet which then allows the retaining rivet to be
removed. Remove the thermostat control panel
(Fig. 112). (On reassembling ensure the control panel is
located over the retaining rivet body before inserting the
centre pin.)
6. Disconnect the plugs from the sockets on the circuit
board (Fig. 113).
7. Replace new circuit board in reverse order checking
that the connections are correct as shown in the
diagram (See Electrical Connections section 5.17 of
these instructions) and that the harness is retained in the
strain reliefs.
1
2
3
British Gas Service Test
Point.
For use by B.G.
Personnel only
