Navien
Navien Flame Sensor 30026351A
Flame sensor for Navien LCB 700 combi, regular and system boilers.
At a glance
- Part type: flame sensor
- Appliance family: LCB 700
£195.37
£162.81 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 30026351A is a flame sensor for Navien LCB 700 boilers. It monitors the burner flame and signals the control board that ignition has been proved, so the boiler can continue to fire safely. A failed sensor prevents flame detection and stops the appliance from running.
Signs this part needs replacing
- The boiler locks out shortly after the burner lights
- Repeated ignition attempts with no sustained flame proving
- Intermittent lockouts that clear on reset but return
- The boiler fires, then shuts down before reaching temperature
- Flame detection faults logged by the control board
Before you order
- Confirm your appliance is a Navien LCB 700
- Check whether your model is combi, regular or system
- Check the output rating: 21KW, 28KW or 36KW
- Check whether the appliance is the internal or external version
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 EXTERNAL 28KW (Serial Number 1710) | — | — | — | |
| NAVIEN LCB 700 COMBI EXTERNAL 28KW (Serial Number 1710) | — | — | — | |
| NAVIEN LCB 700 COMBI EXTERNAL 36KW (Serial Number 1709) | — | — | — | |
| NAVIEN LCB 700 COMBI EXTERNAL 36KW (Serial Number 1709) | — | — | — | |
| NAVIEN LCB 700 COMBI INTERNAL 21KW (Serial Number 1704) | — | — | — | |
| NAVIEN LCB 700 COMBI INTERNAL 21KW (Serial Number 1704) | — | — | — | |
| NAVIEN LCB 700 COMBI INTERNAL 28KW (Serial Number 1706) | — | — | — | |
| NAVIEN LCB 700 COMBI INTERNAL 28KW (Serial Number 1706) | — | — | — |
Showing 10 of 36 compatible appliances.
Documents & drawings
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