Biasi
Biasi Magnetic Flow Switch BI1621104
Biasi magnetic flow switch and filter, part number BI1621104, for Basica COND and Rinnova Adaptive appliances.
At a glance
- Also known as 1651786
£34.73
£28.94 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 BI1621104 is a magnetic flow switch supplied with an integrated filter. It is fitted to Biasi Basica COND and Rinnova Adaptive condensing appliances, where it monitors water flow through the circuit and signals the control board accordingly. The filter element captures magnetic and non-magnetic debris carried in the system water before it reaches the switch body.
Signs this part needs replacing
- The appliance fails to fire on a call for heat or hot water despite the pump running
- Intermittent operation, with the appliance cutting in and out during a demand
- Repeated lockouts that clear after a reset but return shortly afterwards
- Visible debris or sludge build-up in the filter housing that cannot be cleared
- No flow signal registered at the control board when water is circulating
Before you order
- Confirm your appliance model against the fitment list above before ordering
- Check the part number on the existing component matches BI1621104
- Inspect the system water condition, as heavy sludge can affect the new switch in the same way
- Verify whether any seals or washers are required separately for the installation
Compliance
| Alternative numbers | 1651786 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BIASI BASICA COND M275V.2024 SM | 47-583-49 | 47-583-49 | — | — |
| BIASI BASICA COND M275V.2428 SM | 47-583-50 | 47-583-50 | — | — |
| BIASI BASICA COND M275V.2832 SM | 47-583-51 | 47-583-51 | — | — |
| BIASI RINNOVA ADAPTIVE M300V.2025 SM | 47-583-46 | 47-583-46 | — | — |
| BIASI RINNOVA ADAPTIVE M300V.2530 SM | 47-583-47 | 47-583-47 | — | — |
| BIASI RINNOVA ADAPTIVE M300V.3035 SM | 47-583-48 | 47-583-48 | — | — |
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 — BASICA COND M275V.2024 SM (GC 47-583-49), BASICA COND M275V.2428 SM (GC 47-583-50), BASICA COND M275V.2832 SM (GC 47-583-51)
manualmanualBIASI appliance manual — RINNOVA ADAPTIVE M300V.2025 SM (GC 47-583-46), RINNOVA ADAPTIVE M300V.2530 SM (GC 47-583-47), RINNOVA ADAPTIVE M300V.3035 SM (GC 47-583-48)
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