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13.0 Changing Components
© Baxi Heating UK Ltd 2017
13.19 P.C.B. & R.D.S. (Removable Data Stick)
(Fig. 64)
NOTE: Both P.C.B. and R.D.S. are available as spare parts.
The P.C.B. is suitable for any boiler model. An R.D.S. specific
to the boiler model output & gas type will be required if the
R.D.S. from the original P.C.B. is not being transferred. It is
recommended that P.C.B. and R.D.S. are replaced together.
1. Ensure that the power to the boiler is isolated and wait 10
seconds.
2. Remove the screws securing the control box cover and
release the cover retaining barbs from their slots.
3. Note the position of all plugs and wires on the P.C.B. and
disconnect them.
4. Undo the securing screws and remove the P.C.B.
IMPORTANT: If only the P.C.B. is being replaced transfer
the R.D.S. from the original board to the new one. Where
both P.C.B. and R.D.S. are being replaced ensure the new
R.D.S. is on new the board.
5. Reassemble in reverse order. Ensure that the ignition lead is
connected correctly.
6. P.C.B. ONLY changed - Check the Combustion - see
Section 14.1.
7. P.C.B. & R.D.S. changed - enable the Calibration Function as
described in Section 14.2, then Check the Combustion - see
Section 14.1.
Fig. 67
R.D.S.
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