Navien
Navien Fan Assembly Premix Blower 30021147A
Premix blower fan assembly for Navien LCB 700 21KW boilers in Combi, Regular and System variants, internal and external.
At a glance
- Part type: Fan assembly (premix blower)
- Appliance family: Navien LCB 700
£139.48
£116.23 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 30021147A, is a fan assembly for the Navien LCB 700 range of 21KW boilers. It is listed for Combi, Regular and System models in both internal and external configurations. The blower forms part of the boiler's combustion air supply.
Signs this part needs replacing
- Boiler locks out or fails to ignite, with a fan or air pressure related fault code.
- Grinding, whining or scraping noise from the fan area during startup or running.
- Reduced or interrupted combustion air, causing poor combustion or flame failure.
- Visible damage, debris or stiffness when the blower is turned by hand.
- Intermittent operation or repeated lockouts that clear after a reset.
Before you order
- Check the boiler model and serial number against the fit list above.
- Confirm the variant (Combi, Regular or System) and whether the installation is internal or external.
- Check the existing fan assembly part number before ordering.
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| NAVIEN LCB 700 COMBI EXTERNAL 21KW (Serial Number 1705) | — | — | — | |
| NAVIEN LCB 700 COMBI EXTERNAL 21KW (Serial Number 1705) | — | — | — | |
| NAVIEN LCB 700 COMBI INTERNAL 21KW (Serial Number 1704) | — | — | — | |
| NAVIEN LCB 700 COMBI INTERNAL 21KW (Serial Number 1704) | — | — | — | |
| NAVIEN LCB 700 REGULAR EXTERNAL 21KW (Serial Number 1474) | — | — | — | |
| NAVIEN LCB 700 REGULAR EXTERNAL 21KW (Serial Number 1474) | — | — | — | |
| NAVIEN LCB 700 REGULAR INTERNAL 21KW (Serial Number 1472) | — | — | — | |
| NAVIEN LCB 700 REGULAR INTERNAL 21KW (Serial Number 1472) | — | — | — | |
| NAVIEN LCB 700 SYSTEM EXTERNAL 21KW (Serial Number 1471) | — | — | — | |
| NAVIEN LCB 700 SYSTEM EXTERNAL 21KW (Serial Number 1471) | — | — | — |
Showing 10 of 12 compatible appliances.
Documents & drawings
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