Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Baxi PCB LMS R603 5142560

Baxi

Baxi PCB LMS R603 5142560

Baxi 5142560 printed circuit board with LMS R603 designation, intended for water heater applications.

At a glance

  • Also known as 1133690
Manufacturer part no.
5142560
Showing prices

£1,180.30

£983.58 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 5142560 is a printed circuit board (PCB) carrying the LMS R603 designation. It is intended for use in Baxi water heater applications, where it handles the electronic control functions of the appliance. The board is identified by its Baxi part number 5142560.

Before you order

  • Confirm the board being replaced carries the LMS R603 designation and the part number 5142560.
  • Check the appliance rating plate and model details, as Baxi uses different boards across its ranges.
  • Compare the connector layout and mounting points on the existing board with the replacement before fitting.
  • Inspect the surrounding wiring and components first, as a board fault can follow a failure elsewhere in the circuit.

Not sure which part?

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