Baxi
Baxi Pressure Switch 7753863
Pressure switch, part 7753863, for selected Baxi Assure and HP40 series heat pump and boiler appliances.
At a glance
- Also known as 1795836
£53.54
£44.62 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 7753863 is a pressure switch used in Baxi heating appliances. It monitors pressure within the appliance's water or air circuit and signals the control board when the required pressure is reached, allowing the appliance to proceed through its start-up sequence. It is fitted across a number of Baxi Assure and HP40 series models.
Signs this part needs replacing
- Appliance fails to fire or start, with the control board not receiving a pressure signal
- Repeated lockouts or fault codes relating to pressure or proving
- Appliance runs intermittently, cutting out shortly after start-up
- Pump or fan runs but the sequence does not advance
- Pressure readings that do not change when the circuit is known to be pressurised
Before you order
- Confirm the appliance model matches one of the fitments listed above
- Check the existing switch part number against 7753863 before removal
- Inspect the wiring and connections to the switch before assuming the switch itself has failed
- Verify system pressure is correct, as low pressure can mimic a switch fault
Compliance
| Alternative numbers | 1795836 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BAXI ASSURE HP50-11-1PHMB | — | — | — | |
| BAXI ASSURE HP50-11-3PHMB | — | — | — | |
| BAXI ASSURE HP50-13-1PHMB | — | — | — | |
| BAXI ASSURE HP50-13-3PHMB | — | — | — | |
| BAXI HP40-11-1PHMB | — | — | — | |
| BAXI HP40-11-3PHMB | — | — | — | |
| BAXI HP40-13-1PHMB | — | — | — | |
| BAXI HP40-13-3PHMB | — | — | — |
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 documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
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