
Firebird
Firebird Capacitor 4UF
4 µF capacitor for Firebird FB 2 K low NOx kerosene burners.
£50.23
£41.86 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 CAPACITOR 4UF is a 4 µF capacitor supplied by Firebird for the FB 2 K oil burner range. It sits in the burner's electrical circuit and provides the phase shift needed to start and run the burner motor. It is a service component for Firebird oil-fired boilers fitted with FB 2 K low NOx kerosene burners.
Signs this part needs replacing
- Burner motor hums but the shaft does not turn.
- Burner locks out on start-up or fails to fire.
- Repeated lockouts or intermittent running.
- Motor runs hot or draws excessive current.
- Burner fires erratically or only after several attempts.
Before you order
- Confirm the failed capacitor is rated 4 µF.
- Check the burner model against the fit list above.
- Isolate the boiler's electrical supply before removing the capacitor.
- Discharge the capacitor before handling it.
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| FIREBIRD FB 2 K 18 LN LOW NOx KEROSENE BURNER | — | — | — | |
| FIREBIRD FB 2 K 20 LN LOW NOx KEROSENE BURNER | — | — | — | |
| FIREBIRD FB 2 K 26 LN LOW NOx KEROSENE BURNER | — | — | — | |
| FIREBIRD FB 2 K 35 LN LOW NOx KEROSENE BURNER | — | — | — | |
| FIREBIRD FIREBIRD OIL FIREBIRDS | — | — | — |
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.
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