Baxi
Baxi Hall Sensor Assembly 7812543
Hall sensor assembly for Baxi Combi 2 and Combi 2.1 boilers, including LPG and Assure variants.
At a glance
- Part type: hall sensor assembly
- Also known as 1794970
£21.90
£18.25 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 Baxi 7812543 is a hall sensor assembly used on Baxi Combi 2 and Combi 2.1 appliances. It forms part of the boiler's fan and speed-sensing circuit, providing the feedback signal the control board uses to monitor rotation. It is supplied as a complete assembly.
Signs this part needs replacing
- The boiler locks out intermittently with no obvious flame or gas fault
- The fan fails to start, or runs at an inconsistent speed
- Ignition is attempted but the boiler shuts down shortly after starting
- A fan or speed-related fault code is logged on the control board
- Repeated resets are needed to get the appliance to fire
Before you order
- Confirm your appliance model against the fit list above
- Check the part number on the existing sensor matches 7812543
- Identify whether your boiler is natural gas or LPG, as both are covered by this part
- Cross-check the model and GC number against the manufacturer's parts list if unsure
Compliance
| Alternative numbers | 1794970 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BAXI 424 COMBI 2 | 47-077-51 | 47-077-51 | — | — |
| BAXI 424 COMBI 2 LPG | 47-077-53 | 47-077-53 | — | — |
| BAXI 424 ERP COMBI 2.1 | 47-077-74 | 47-077-74 | — | — |
| BAXI 424 LPG COMBI 2 | 47-077-53 | 47-077-53 | — | — |
| BAXI 430 COMBI 2 | 47-077-52 | 47-077-52 | — | — |
| BAXI 430 COMBI 2 LPG | 47-077-54 | 47-077-54 | — | — |
| BAXI 430 ERP COMBI 2.1 | 47-077-75 | 47-077-75 | — | — |
| BAXI 430 LPG COMBI 2 | 47-077-54 | 47-077-54 | — | — |
| BAXI 436 ERP COMBI 2.1 | 47-077-76 | 47-077-76 | — | — |
| BAXI 624 COMBI 2 - FRONT FACING ANALOGUE PRESSURE GAUGE | 47-077-55 | 47-077-55 | — | — |
Showing 10 of 27 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.
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