Hamworthy
Hamworthy Relay PCB 533902063
Hamworthy relay PCB, part 533902063, for Chesil single pump boilers.
At a glance
- Also known as 2064390
£317.11
£264.26 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 Hamworthy 533902063 is a relay printed circuit board used in Chesil appliances fitted with a single pump. It switches the pump circuit, allowing the boiler to control pump operation as part of its sequence. It is a manufacturer-supplied board for the Chesil range.
Signs this part needs replacing
- The pump does not run when the boiler calls for heat.
- The boiler fails to fire or locks out during the pump sequence.
- Pump operation is intermittent or the boiler cycles unexpectedly.
- Visible burning, scorching or discolouration on the relay board.
- Repeated fault codes linked to the pump circuit.
Before you order
- Confirm the appliance is a Hamworthy Chesil with a single pump configuration.
- Check the part number on the existing board matches 533902063.
- Inspect the pump and wiring before assuming the board is at fault.
- Verify the fault is electrical and not a seized or failed pump.
Compliance
| Alternative numbers | 2064390 |
|---|
| 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.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.