Biasi
Biasi Air Pressure Switch BI1256114
Air pressure switch for Biasi M90 series gas boilers up to serial number N223580203.
At a glance
- Also known as AIR-PRESSURE-SWITCH-M9028, 1650334
£81.97
£68.31 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 Biasi BI1256114 is an air pressure switch for Biasi M90 series gas boilers. It monitors the pressure differential created by the fan to prove airflow before ignition. This switch is specified for appliances up to serial number N223580203.
Signs this part needs replacing
- Boiler locks out or fails to ignite despite the fan running.
- Repeated lockouts that clear after reset but return.
- Error code indicating air pressure or fan fault.
- Boiler fires intermittently or not at all.
- No ignition sequence after the fan starts.
Before you order
- Check your boiler's model and serial number against the fitment list and serial number limit.
- Confirm the part number BI1256114 matches the existing switch.
- Inspect the air pressure switch and its connections for damage or blockages.
- Ensure the fan and flue are operating correctly before replacing the switch.
Compliance
| GC number | E83-184 |
|---|---|
| Barcode / EAN | 8023585816226 |
| Alternative numbers | AIR-PRESSURE-SWITCH-M9028, 1650334 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BIASI BIASI GARDA M90E-28S | — | — | — | |
| BIASI BIASI GARDA M90F-28S | — | — | — | |
| BIASI BIASI GARDA M90F-28SR | — | — | — | |
| BIASI BIASI PARVA M90-28S | — | — | — | |
| BIASI BIASI PARVA M90-28SR | — | — | — | |
| BIASI BIASI RIVA COMPACT M90E-28S | — | — | — | |
| BIASI BIASI RIVA COMPACT M90F-28S | — | — | — | |
| BIASI BIASI RIVA COMPACT M90F-28SR | — | — | — | |
| BIASI BIASI RIVA PLUS M90D-28S | — | — | — | |
| BIASI BIASI RIVA PLUS M90D-28SR | — | — | — |
Showing 10 of 16 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.
BIASI appliance manual — GARDA M90F.28S (GC 47-970-20), GARDA M90F.28SR (GC 41-970-11)
manualmanualBIASI appliance manual — PARVA M90 - 28S (GC 47-970-14)
manualmanualBIASI appliance manual — RIVA COMPACT M90E.28S (GC 47-970-18)
manualmanualBIASI appliance manual — RIVA PLUS M90D.28S (GC 47-970-16), RIVA PLUS M90D.28SR (GC 41-970-09)
manualNo technical questions yet for this part.
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