Saunier Duval EnviroPlus F24e Instructions For Use Installation And Servicing page 61

16.32 Control Box
For access, refer to section 16.1.
Remove relevant plugs and connectors, refer to wiring diagrams
section 15.
Withdraw grommets and leads so they are hanging loose.
Unthread the retaining cord and remove the control box by
drawing it outwards away from its retaining slots, see relevant
part of diagram 11.1.
16.33 Fuses PCB - Control Box
Remove the front casing, refer to the relevant part of section
16.1.
Drop down the control panel and undo three screws securing
the rear cover and lift up, see relevant part of diagram 11.1.
Remove the fuse holder from the mainPCB and replace fuse,
see diagram 16.22.
PCB - Transformer
For access, refer to section 16.1.
Refer to diagram 16.2 and wiring diagrams section 15.
Replace fuse.
16.34 230V Controls Option
For access, refer to section 16.1.
Gain access to the 230v controls optionPCB by unclipping the
control panel interface and carefully lowering forward, see
diagram 11.3.
Disconnect the electrical connection from the 230V controls
option PCB and the electrical connection from the main PCB.
Remove the 230V controls interface retaining screw.
Remove the 230V controls option PCB, see diagram 16.23.
16 Replacement of Parts
61
THREE WAY
VALVE PCB
SECURING
(F24e/F28e ONLY)
SCREWS (2)
RETAINING CLIPS
230V CONTROLS
OPTION PCB
FUSE
HOLDER
Diagram 16.22
RETAINING
SCREW
Diagram 16.23
2000225294A