SERVICING AND SPARES
Greenstar FS CDi
ErP
6720818079 (2016/04)
36
Fig. 55 PCB
6.9.3
Fan assembly:
▶ Undo lower pipe union on gas pipe [5].
▶ Twist the mixer unit [4] with gas pipe [5] to separate from fan [1].
▶ Remove fan lead and earth connector.
The earth connector has a positive clip fixing.
▶ Remove fixing screws [3] attaching fan [1] to the burner cover [2].
▶ Remove fan [1].
▶ After re-assembly check that the CO/CO
2
levels are as described in
the section “Setting the air/gas ratio”.
Flap Valve:
▶ Undo lower pipe union on gas pipe [5].
▶ Remove pipe [5] by pushing upwards and towards the rear of the
boiler.
▶ Twist the mixer unit [4] with gas pipe [5] to separate from the fan
[1].
▶ Remove flap valve [6] from within fan intake [1] and replace.
▶ After re-assembly check that the CO/CO
2
levels are as described in
the section “Setting the air/gas ratio” on page 34.
Fig. 56 Fan assembly
6.9.4
Condensate pump:
▶ Disconnect the electrical connections in the control box, see wiring
schematic in the ‘Fault finding and Diagrams’ section.
▶ Remove the 15mm flexible tube [1] from the pump by rotating anti-
clockwise and pulling up.
▶ Remove the black flexible pipe [2] from the condensate pump. Take
care as there maybe condensate remaining in the pipe.
▶ Carefully remove the condensate pump [3] from the boiler and pour
any excess condensate into a suitable container for safe disposal.
Fig. 57 Condensate pump
6.9.5
Sample points:
Air sampling point [1]
See section 6.5 on page 31, Checking flue integrity
Flue Gas sampling point [2]
See section 6.6 on page 31, Flue gas analysis
6.9.6
Sensors:
▶ Check that the appliance is electrically isolated.
Flow temperature sensor [3]
▶ Remove the connector.
▶ Release the sensor clip and withdraw the sensor.
▶ Apply heat transfer paste to the replacement sensor.
Safety temperature limiter [4]
▶ Remove the connectors.
▶ Unscrew the sensor.
Do not attempt to service the fan assembly and flap
valve if a CO/CO
2
analyser is not available
.
Ensure the flap valve is fitted correctly with rubber flap
upwards.
6720818079-09.1Wo
T2.5A H250V F1
T500mA L250V F3
Spare Fuse order
T1.6A L250V F2
2
3
1
6720818079-10.1Wo
1
2
3
4
5
6
6720818079-12.1Wo
1
2
3
