Navien
Navien Electrode 30029150A
Electrode 30029150A for Navien NCB300 and NCB500 series combi boilers.
At a glance
- Part type: electrode
£20.42
£17.02 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 30029150A is an electrode used in Navien NCB300 and NCB500 series combi boilers. It forms part of the boiler's flame sensing circuit, sitting in the combustion path to detect whether a flame is present. A sound electrode signal is required before the boiler will allow the burner to run.
Signs this part needs replacing
- Boiler repeatedly locks out or fails to establish a flame
- Ignition sequence runs but the burner does not stay lit
- Intermittent lockouts that clear on reset, then return
- Visible damage to the electrode tip, ceramic insulator or lead
- Soot or heavy contamination on the electrode probe
Before you order
- Confirm your boiler model against the fitment list above
- Check the serial number of your appliance matches the relevant model range
- Inspect the existing electrode and its lead for cracks, corrosion or contamination
- Isolate the gas and electrical supply before any work on the combustion circuit
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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