Ferroli
Ferroli Flow Switch VK325 39841670
Flow switch VK325 for Ferroli Energy TOP commercial and wall-mounted boilers, part number 39841670.
£145.04
£120.87 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 Flow Switch VK325 is a Ferroli hydraulic component used across the Energy TOP range of commercial and wall-mounted boilers. It detects water flow through the appliance circuit and signals the control board, allowing the boiler to prove circulation before firing. Part number 39841670.
Signs this part needs replacing
- Boiler fails to fire despite the pump running and demand present
- Repeated lockout or ignition fault codes linked to flow proving
- Intermittent operation that clears when the flow switch is tapped or disturbed
- No change in switch state when flow is established through the circuit
- Water weeping from the switch body or its connections
Before you order
- Confirm the appliance model and product number against the fit list above
- Check the existing flow switch is marked VK325 or carries part number 39841670
- Inspect the wiring plug and hydraulic connections for damage before fitting
- Verify the fault is flow-related rather than a pump, sensor or board issue
Compliance
| Alternative numbers | FER39841670 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| FERROLI ENERGY TOP W 70 - 30K0533004 (01/07/2011) | — | — | — | |
| FERROLI ENERGY TOP W 80 - 30K0533004 (01/07/2011) | — | — | — | |
| FERROLI FERROLI ENERGY TOP 125 (V2) | — | — | — | |
| FERROLI FERROLI ENERGY TOP 80 (V2) | — | — | — | |
| FERROLI COMMERCIAL ENERGY TOP B 125 - 30K0585002 (01/06/2010) | — | — | — | |
| FERROLI COMMERCIAL ENERGY TOP B 160 - 30K0586004 (01/07/2011) | — | — | — | |
| FERROLI COMMERCIAL ENERGY TOP B 250 - 30K0587003 (16/05/2011) | — | — | — | |
| FERROLI COMMERCIAL ENERGY TOP B 250 - 30K0587004 (01/07/2011) | — | — | — | |
| FERROLI COMMERCIAL ENERGY TOP W 125 - 30K0534004 (01/07/2011) | — | — | — | |
| FERROLI COMMERCIAL ENERGY TOP W 70 - 30K0533004 (01/07/2011) | — | — | — |
Showing 10 of 11 compatible appliances.
Documents & drawings
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