Baxi
Baxi Pressure Sensor 7875820
Pressure sensor, part 7875820, for Baxi Aquaheat Hi and HWI 4/50 and 14/50 appliances.
At a glance
- Appliance family: Aquaheat Hi / HWI
- Also known as 1129458
£125.33
£104.44 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 7875820 is a pressure sensor used on Baxi Aquaheat Hi and HWI appliances. It monitors pressure within the appliance and signals the boiler control system accordingly. It is a service component for the models listed below.
Signs this part needs replacing
- Pressure readings that are erratic or do not match the boiler pressure gauge
- The appliance locks out or fails to fire when system pressure is correct
- Pressure-related fault indications shown on the boiler controls
- Visible damage, corrosion or leakage around the sensor body
Before you order
- Confirm your appliance model matches one of the fitments listed above
- Check the part number on the existing sensor against 7875820
- Confirm the fault is traced to the sensor rather than the filling loop, expansion vessel or pressure gauge
Compliance
| Alternative numbers | 1129458 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BAXI AQUAHEAT HI/ HWI - 4/50 | — | — | — | |
| BAXI AQUAHEAT HI/HWI - 14/50 | — | — | — |
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.
No technical questions yet for this part.
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