Vaillant
Vaillant Transformer 0020127196
Vaillant transformer 0020127196 for geoTHERM VWL 45/1, 65/1 and 75/1 A 230V heat pumps.
At a glance
- Appliance family: geoTHERM VWL 45/1, 65/1 and 75/1 A 230V
- Also known as 1385171
£213.55
£177.96 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 0020127196 is a transformer used in geoTHERM VWL series heat pumps. It converts the mains supply down to the low voltage required by the appliance's control electronics. A failed transformer will leave the control circuit without a supply, so the appliance will not run or respond.
Signs this part needs replacing
- The appliance is completely dead with no display or indicator lights, despite a confirmed mains supply.
- The control board receives no low voltage at its supply terminals.
- The transformer shows signs of overheating, burning or a burnt winding smell.
- Repeated fuse failure on the low voltage side of the circuit.
- Intermittent shutdowns or erratic control behaviour that trace back to an unstable low voltage supply.
Before you order
- Confirm the appliance model and variant against the fit list above.
- Check the part number printed on the existing transformer matches 0020127196.
- Verify the mains supply and any fuses on the low voltage circuit before condemning the transformer.
- Isolate the appliance from the electrical supply before carrying out any inspection or replacement.
Compliance
| Alternative numbers | 1385171 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT VWL 45/1 A 230V | — | — | — | |
| VAILLANT VWL 65/1 A 230V | — | — | — | |
| VAILLANT VWL 75/1 A 230V | — | — | — | |
| VAILLANT geoTHERM VWL 45/1 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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