Potterton Promax FSB 30 HE Installation & Service Instructions Manual page 40

Air Box Door Panel
Spark
Sleeve
Sensing
Lead Terminals
Fig. 40
Earth
Combustion Box
40
© Baxi Heating UK Limited 2010
Door Panel
14.0
14.2
WARNING: The PCB Control and Fan
Assembly are 325 Vdc. Isolate system
controls before access
1. Ensure that the boiler is cool.
2. Remove the facia and front door panel.
3. Release the four
panel and remove the panel (Fig. 39).
4. Disconnect the three leads from the terminals (Fig. 40).
5. Undo the four screws securing the combustion box door
and remove the door (Fig. 41).
6. Visually check for debris/damage and clean or replace if
necessary the following:
a) Burner.
b) Heat exchanger fins.
Fig. 39
c) Fan compartment
d) Insulation.
e) Door seals-Important: Pay particular attention to
the condition of the combustion box door seals.
f) Electrodes.
g) The condensate trap.
h) The condensate pump
i) Top of heat exchanger.
Fig. 41
Servicing the Boiler
Annual Servicing - Inspection
1 / turn screws securing the air box door
4
(Check also for condensate leaks).