Baxi Printed Circuit Board RDS System 12 720845601

The Baxi 720845601 is a printed circuit board (PCB) supplied for Baxi Megaflo 2 System 12 Compact GA appliances. It forms part of the RDS-System 12 control platform and carries the electronics that handle ignition sequencing, temperature control and the appliance's safety monitoring routines. The board is listed by Baxi under spare part type Printed Circuit Boards (PCB) and is fitted as a direct replacement for the original unit.

• The appliance fails to fire or shows no response when a demand is called.
• Fault or error codes appear on the display and cannot be cleared by a reset.
• The appliance locks out intermittently, or runs through repeated ignition attempts without lighting.
• Controls, display or fan and pump outputs behave erratically or stop responding altogether.
• Visible damage on the board itself, such as scorching, discoloured tracks or leaking capacitors.

• Confirm the appliance model and GC number against the compatibility list, as the same appliance family can use more than one board revision.
• Check the existing board's part number and any revision marking before ordering, since later revisions may look similar but differ in software or connector layout.
• Have the appliance's serial and GC details to hand when speaking to the installer or parts desk.
• Work on the appliance's electrical controls should be carried out by a competent person, with the power isolated before the board is removed.