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4000124050-2
18 Replacement of Parts
18.13 Heat exchanger, refer to diagram 18.7.
Before starting refer to the front of
Section 18 Important
information.
• Remove the front panel
, refer to Section 15.3.
•
Remove the sealed chamber cover
, refer to Section 15.5.
•
Remove the combustion chamber cover
, refer to Section
15.7.
• Drain down central heating water circuit of the boiler only,
refer to relevant part of diagram 18.1
.
•
Remove the fan,
refer to Section 15.10.
• Remove air pressure switch sensing tube from the side of the
flue hood
, see diagram 15.9.
• Release both side panels,
refer to section 15.6.
• Remove the flue hood, lift up and off. When refitting ensure
the rear of the flue hood locates in the tabs.
• Disconnect the electrical leads from the overheat thermostat.
• Remove the two pipe securing clips.
• Lift to remove the heat exchanger taking, care not to damage
the insulation.
18.14 Combustion chamber insulation, refer to
diagram 18.8.
Before starting refer to the front of
Section 18 Important
information.
• Remove the front panel
, refer to Section 15.3.
•
Remove the sealed chamber cover
, refer to Section 15.5.
•
Remove the combustion chamber cover
, refer to Section
15.7.
• Remove the heat exchanger,
refer to Section 18.13.
• Pull out side insulation panels from combustion chamber.
• Tilt rear insulation panel forwards and out.
• Fit replacement insulation.
18.15 Printed circuit board (PCB), refer to
diagram 18.9.
Before starting refer to the front of
Section 18 Important
information.
• Remove the front panel
, refer to Section 15.3.
• Lower the control panel
, refer to Section 15.4.
• Undo and remove the two front retaining screws.
• Hinge up the control panel cover and ease forwards from the
rear retaining lugs to gain access to PCB. Do not strain the
cables attached to the PCB. Note the routing of the cables.
• Carefully pull off electrical connections to PCB.
• Unclip and lift out PCB.
• Fit replacement PCB. Be careful not trap any of the cables.
Make sure that PCB connections are fully pushed onto
replacement PCB.
F24E shown
Diagram 18.8
9824a
INSULATION
➜
➜
Diagram 18.9
PCB (CONTROL BOARD)
CONTROL
BOARD
COVER
10001
10021
