Johnson & Starley
Johnson & Starley Capacitor 4MF 1000-0504710
4MF run capacitor for Johnson & Starley boilers and warm air units, supplied under part number 1000-0504710.
At a glance
- Also known as 1690693
£57.35
£47.79 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
A 4MF capacitor supplied by Johnson & Starley under part number 1000-0504710. It is used on Johnson & Starley boilers and warm air appliances, where it supports the starting and running of the fan or pump motor circuit. The capacitor is a service item, so it is replaced when the motor it serves becomes slow to start, noisy or fails to run.
Signs this part needs replacing
- The fan or motor hums but does not start, or needs a push to run
- Motor runs slowly, erratically or overheats in use
- Repeated tripping of the motor overload or fuse on start-up
- Visible swelling, bulging or leakage from the capacitor body
- Burning smell or discolouration around the capacitor terminals
Before you order
- Confirm the capacitor value marked on the existing component matches 4MF
- Check the appliance model against the fit list above before ordering
- Isolate the electrical supply and discharge the capacitor before removal
- Inspect the motor windings and wiring for damage while the capacitor is out
Compliance
| Alternative numbers | 1690693 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| JOHNSON & STARLEY AQUAIR 80 | — | — | — | |
| JOHNSON & STARLEY HR200 | — | — | — | |
| JOHNSON & STARLEY JANSTAR | 42-451-07 | 42-451-07 | — | — |
| JOHNSON & STARLEY JOHNSON AND STARLEY AQUAIR80 | — | — | — | |
| JOHNSON & STARLEY JOHNSON AND STARLEY ECONOMAIRE 50 | — | — | — | |
| JOHNSON & STARLEY JOHNSON AND STARLEY HR200 | — | — | — | |
| JOHNSON & STARLEY JOHNSON AND STARLEY JANSTAR | — | — | — | |
| JOHNSON & STARLEY JOHNSON AND STARLEY JB40-50 | — | — | — |
Documents & drawings
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