Hamworthy
Hamworthy Siemens LMU64 Boiler Control F100W NG 533901646
Hamworthy Siemens LMU64 boiler control unit, part number 533901646, for F100W NG applications.
At a glance
- Also known as 2065130
£436.15
£363.46 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Siemens LMU64 boiler control is a burner management and control unit supplied under Hamworthy part number 533901646. It governs the operating sequence of the appliance, handling ignition, flame supervision and modulation for F100W NG (natural gas) applications. It is fitted as the main control board within the appliance's electrical assembly.
Signs this part needs replacing
- The appliance fails to start or locks out repeatedly with no ignition sequence.
- The fan, pump or ignition sequence does not run when there is a call for heat.
- Fault or lockout codes appear on the display that cannot be cleared.
- The appliance runs intermittently or shuts down mid-cycle without an obvious external cause.
- Visible damage, scorching or moisture ingress on the control board.
Before you order
- Confirm the appliance model and gas type match the F100W NG specification.
- Check the part number printed on the existing control board against 533901646.
- Verify the fault is with the control unit and not with the wiring, sensors or gas supply.
- Check the manufacturer's parts list for your appliance to confirm compatibility before ordering.
Compliance
| Alternative numbers | 2065130 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| HAMWORTHY HAMWORTHY SPARE PARTS | — | — | — |
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
No documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
No technical questions yet for this part.
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