Baxi Combi 133 HE Plus Installation & Servicing Instructions Manual page 44

PCB Connection Cover
Fig. 63
44
© Baxi Heating UK Limited 2005
Facia Securing Screws
Control Knob
Fig. 63a
PCB
13.0
13.16
WARNING: The PCB Control and Fan
Assembly is 325 Vdc. Isolate at supply before
access.
1. Pull the control knobs off their spindles and remove
the plastic button covers. Refit them onto the new PCB
(Fig. 63a).
2. Release the facia securing screws (
down the facia box.
3. Remove the screws securing the PCB connection
cover.
4. Remove the screws securing the PCB and disconnect
the electrical connections noting their positions although
they are one way fitting.
NOTE: Check the PCB for the presence of input
jumpers - see section 10.2 & 10.3. Set the new PCB
as the original.
5. Fit the new PCB and reassemble in reverse order.
Facia Box
Plastic Button Covers
Changing Components
PCB
(Fig. 63)
1 / turn) and hinge
4