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Baxi PCB/RDS Key LPG 720844701

Baxi

Baxi PCB/RDS Key LPG 720844701

LPG-configured PCB/RDS key for the Baxi Duo-tec 2 Combi 28 GA gas boiler.

At a glance

  • Part type: PCB/RDS key
  • Appliance family: Duo-tec 2 Combi
  • Also known as 1119780
Manufacturer part no.
720844701
GC number
H90-665
Showing prices

£63.28

£52.73 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Baxi 720844701 is a PCB/RDS key supplied in LPG configuration for the Baxi Duo-tec 2 Combi 28 GA. It forms part of the boiler's electronic control assembly, handling the ignition, sequencing and safety monitoring functions on the appliance. The RDS key element carries the appliance-specific settings that the board reads on start-up.

Signs this part needs replacing

  • The boiler locks out and will not complete an ignition sequence
  • No heating or hot water demand is responded to, with the pump or fan failing to run
  • Repeated lockouts or intermittent shutdowns during operation
  • Fault or error codes shown on the boiler display that point to the control board
  • The board shows signs of heat damage, moisture ingress or component failure

Before you order

  • Check the appliance data badge to confirm the model is a Duo-tec 2 Combi 28 GA and that the boiler is set up for LPG
  • Confirm the existing board's part number matches 720844701 before ordering
  • Isolate the electrical supply and the gas supply before removing or fitting any control component
  • Verify the fault is with the board itself rather than a sensor, electrode or wiring fault elsewhere in the appliance

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.