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Hamworthy LMU64 Programmer 533901498

Hamworthy

Hamworthy LMU64 Programmer 533901498

Hamworthy LMU64 programmer, part 533901498, for the WM150 NG boiler.

At a glance

  • Also known as 2064350
Manufacturer part no.
533901498
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 533901498, is a control unit for the WM150 NG boiler. It manages the boiler's operating sequence as part of the appliance's control and timing arrangement. It is supplied as a Hamworthy spare part.

Signs this part needs replacing

  • The boiler fails to run through its start-up sequence or does not fire at all.
  • The appliance repeatedly locks out, with the fault returning after a reset.
  • Operation is intermittent, with the boiler cutting out without an obvious external cause.
  • Fault codes relating to the control or sequencing of the appliance are displayed.
  • The boiler no longer responds to demand from the programmer or controls.

Before you order

  • Confirm the appliance model is the WM150 NG.
  • Check the existing control unit's part number against 533901498 before removal.
  • Isolate the electrical supply to the boiler before any work begins.
  • Verify the fault lies with the control unit rather than the wiring, sensors or gas supply.

Not sure which part?

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