Navien
Navien Fan Assembly Premix Blower 30030206A
Premix blower fan assembly for Navien NCB300 and NCB500 series combi boilers, part number 30030206A.
At a glance
- Part type: fan assembly, premix blower
£127.39
£106.16 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 Navien premix blower fan assembly, part number 30030206A, is the combustion air fan used on Navien NCB300 and NCB500 series gas combi boilers. It supplies the premix burner with combustion air at the correct rate across the boiler's modulation range. The assembly is supplied as a complete fan unit for direct fitting to the appliance.
Signs this part needs replacing
- Boiler locks out or fails to ignite, with fan-related fault codes logged
- Fan runs noisily, with grinding, rumbling or scraping from the fan housing
- Fan does not spin up at the start of a demand, or spins intermittently
- Repeated flame failure or ignition faults traced to insufficient combustion air
- Visible damage, contamination or stiffness when the fan is turned by hand
Before you order
- Confirm your boiler model against the fitment list above
- Check the serial number of your appliance, as fitment is listed by model and serial range
- Read the existing fan assembly's part number to confirm it matches 30030206A
- Inspect the fan housing, gasket and electrical plug for damage before fitting
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| 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) | — | — | — | |
| NAVIEN NCB500-2S/37K COMBI - (Serial Number 3735) | — | — | — | |
| NAVIEN NCB500-2S/37K COMBI - (Serial Number 3735) | — | — | — |
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 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.