Navien
Navien Fan Damper 30028361A
Fan damper for Navien NCB300 and NCB500 combi boilers, part number 30028361A.
At a glance
- Part type: fan damper
£5.57
£4.64 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 fan damper is a Navien component fitted to the NCB300 and NCB500 combi boiler ranges. It sits in the fan and flue air path, where it regulates airflow through the combustion assembly. The part is supplied under Navien part number 30028361A.
Signs this part needs replacing
- Combustion or flue-related fault codes appearing on the boiler display
- Boiler locking out or failing to fire consistently
- Audible rattling, whistling or grinding from the fan area
- Visible damage, distortion or sticking of the damper flap
- Condensate or moisture tracking around the fan and damper housing
Before you order
- Confirm the boiler model and serial number against the fit list above
- Inspect the existing fan assembly for damage beyond the damper itself
- Check the damper housing and seals for debris or distortion before fitting
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| NAVIEN NCB300-28K COMBI - (Serial Number 3710) | — | — | — | |
| NAVIEN NCB300-28K COMBI - (Serial Number 3710) | — | — | — | |
| NAVIEN NCB300-37K COMBI - (Serial Number 3734) | — | — | — | |
| NAVIEN NCB300-37K COMBI - (Serial Number 3734) | — | — | — | |
| NAVIEN NCB300-41K COMBI - (Serial Number 3711) | — | — | — | |
| NAVIEN NCB300-41K COMBI - (Serial Number 3711) | — | — | — | |
| NAVIEN NCB500-1S+/32K COMBI - (Serial Number 3924) | — | — | — | |
| NAVIEN NCB500-1S+/32K COMBI - (Serial Number 3924) | — | — | — | |
| NAVIEN NCB500-2S+/41K COMBI - (Serial Number 3712) | — | — | — | |
| NAVIEN NCB500-2S+/41K COMBI - (Serial Number 3712) | — | — | — |
Showing 10 of 12 compatible appliances.
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.
NAVIEN appliance manual — NCB300-28K COMBI - (Serial Number 3710), NCB300-37K COMBI - (Serial Number 3734), NCB300-41K COMBI - (Serial Number 3711)
manualmanualNAVIEN appliance manual — NCB500-1S+/32K COMBI - (Serial Number 3924), NCB500-2S+/41K COMBI - (Serial Number 3712), NCB500-2S/37K COMBI - (Serial Number 3735)
manualNo technical questions yet for this part.
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