45
sERVICINg
Ideal Logic Code Combi -
Installation and Servicing
3G9690
1.
Refer to Frame 49.
Note:
Ensure condensate trap is
fully drained before removal.
2.
Pull off the rubber pipe at the
sump drain.
3.
Disconnect the condensate
drain pipe.
4.
Remove the cleaning plug
5.
Turn the siphon clockwise to
disengage and lift to remove.
6.
Reassemble in reverse order.
7.
When reassembling ensure
the trap is full of water.
8.
Check operation of the boiler. Refer to Frames 38 & 39.
59 CONDENsaTE TRap/sIphON REpLaCEMENT
60 MaIN pCB REpLaCEMENT
Note.
Fit the earth strap provided with the PCB
to your wrist and secure to a suitable earth on
the boiler chassis.
1.
Refer to Frame 49.
2.
Note the control knob positions.
3.
Remove the 2 screws retaining the control
box cover.
4.
Carefully lift the 4 retaining clips and remove
control box cover.
5.
Unplug all lead connections to the PCB
including the ribbon cable (to facilitate
ribbon cable removal, ease side clips apart
and pull upwards), also where applicable,
push the small plastic clip with an electrical
screwdriver to facilitate plug removal.
6.
Spring out the two side retaining clips and
pull the PCB upwards to clear the 4 corner
retaining posts.
7.
Take the new Primary PCB and attach the
appropriate Boiler Chip Card (BCC) to it (this
should correspond to the output of the boiler:
24kW, 30kW or 35kW).
Note.
Ensure the
correct orientation of BCC by placing “TOP”
side up as shown.
8.
Re-connect all plug connections.
9.
Reassemble in reverse order.
10.
Turn power back on to the boiler, after a few
moments the display will start alternating
between “c” and “0”. Turn the reset knob
fully clockwise and when the display shows
“ - ” turn the knob fully anti-clockwise
IMMEDIATELY.
Finally move the knob into the required
position (Standby, Summer or Winter).
11.
Check operation of the boiler. Refer to
Frames 38 & 39.
4
3
3
4
6
5
Plastic
Clip
5
2
Siphon
Ribbon
Cable
Connection
7
Note that production boiler PCBs are factory pre-set to operate for boiler range and output, but when ordering Primary PCB as a
spare, an additional Boiler Chip Card (BCC) MUST also be purchased for your specific boiler range and output.
s
ER
VICIN
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06/01/2011 09:10:38
Summary of Contents for LOGIC Code Combi 26
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