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Hamworthy LMU64 Programmer 533901502

Hamworthy

Hamworthy LMU64 Programmer 533901502

LMU64 programmer for the Hamworthy WM100 NG boiler, part number 533901502.

At a glance

  • Also known as 2064354
Manufacturer part no.
533901502
Showing prices

£426.50

£355.42 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 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 Hamworthy LMU64 programmer, part number 533901502, is a control unit for the Hamworthy WM100 NG boiler. It governs the burner sequence and the boiler's operating programme. It is supplied as a spare part for servicing and repair.

Signs this part needs replacing

  • The boiler fails to start or does not complete its ignition sequence
  • Repeated lockouts or fault codes at the control
  • No response to a demand for heat or hot water
  • Intermittent or erratic burner operation
  • No display or power at the programmer

Before you order

  • Confirm the appliance model is the WM100 NG
  • Check the part number on the existing programmer matches 533901502
  • Establish that the fault lies with the programmer rather than another component
  • Confirm the installation is on natural gas, as indicated by the NG designation

Not sure which part?

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