Vaillant
Vaillant Flow Switch 0020127212
Vaillant flow switch 0020127212 for geoTHERM VWL 65/1 A 230V and VWL 75/1 A 230V heat pumps.
At a glance
- Part type: flow switch
- Appliance family: geoTHERM VWL
- Also known as 1385187
£317.58
£264.65 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 Vaillant 0020127212 is a flow switch used in Vaillant geoTHERM VWL heat pump appliances. It monitors water flow through the heating circuit and signals the appliance control when flow is present or interrupted. It is a service part for the VWL 65/1 A 230V and VWL 75/1 A 230V models.
Signs this part needs replacing
- The appliance locks out or faults shortly after a demand for heat.
- Flow-related fault codes appear on the control display.
- The pump runs but the appliance does not register circulation.
- Intermittent operation, with the appliance cutting in and out during a heating cycle.
- The switch shows signs of scale, debris or mechanical wear when inspected.
Before you order
- Confirm the appliance model matches one of the fitments listed above.
- Check the existing part number on the component against 0020127212.
- Inspect the circuit for debris or air that may be causing the flow fault before replacing the switch.
- Verify the system has been correctly filled and vented.
Compliance
| Alternative numbers | 1385187 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT VWL 65/1 A 230V | — | — | — | |
| VAILLANT VWL 75/1 A 230V | — | — | — | |
| VAILLANT geoTHERM VWL 65/1 A 230V | — | — | — | |
| VAILLANT geoTHERM VWL 75/1 A 230V | — | — | — | |
| VAILLANT geoTHERM VWL 75/1 A 230V | — | — | — |
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.
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