Hamworthy
Hamworthy Main Boiler On/Off Switch 573407071
Hamworthy main on/off switch for Milborne 501 and 502 wall hung condensing boilers.
At a glance
- Part type: main boiler on/off switch
£73.64
£61.37 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 Main Boiler On/Off Switch is a Hamworthy control component for the Milborne range of wall hung condensing boilers. It provides the main power switching function for the appliance. Hamworthy lists it as a spare for the Milborne 501 and 502 models.
Signs this part needs replacing
- The boiler does not power up when the switch is operated.
- The switch feels loose, stiff or fails to latch positively.
- Power to the appliance is intermittent or cuts out during use.
- Visible damage, scorching or discolouration around the switch body.
- No continuity across the switch terminals when tested with a multimeter.
Before you order
- Confirm the appliance is a Hamworthy Milborne 501 or 502 wall hung condensing boiler.
- Test the switch and supply with a suitable multimeter to establish where the fault lies.
- Isolate the electrical supply before removing or testing the existing switch.
- Note the existing terminal connections and mounting before removal.
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| HAMWORTHY HAMWORTHY SPARE PARTS | — | — | — | |
| HAMWORTHY MILBORNE 501 WALL HUNG CONDENSING | — | — | — | |
| HAMWORTHY MILBORNE 502 WALL HUNG CONDENSING | — | — | — |
Documents & drawings
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