Vaillant
Vaillant High Pressure Switch 0020148036
High pressure switch for Vaillant Arotherm VWL series heat pumps, part number 0020148036.
At a glance
- Also known as 1386054
£127.99
£106.66 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 0020148036 is a high pressure switch used on Vaillant VWL series heat pumps. It monitors system pressure on the refrigerant side and signals the appliance when pressure rises above the permitted limit. The switch forms part of the appliance's safety circuit, allowing the control board to shut the unit down before damage occurs.
Signs this part needs replacing
- The heat pump locks out and will not restart without a manual reset
- The appliance shuts down during heating or hot water demand
- A pressure-related fault is displayed on the control panel
- The unit trips repeatedly at the same point in the cycle
- The switch fails to open or close when pressure is applied during testing
Before you order
- Confirm the model on the appliance data plate matches one of the fitments listed above
- Check the part number on the existing switch against 0020148036
- Establish whether the fault lies with the switch or with system pressure before replacing
- Check the refrigerant circuit for overcharge, restriction or fan faults that could cause high pressure
Compliance
| Alternative numbers | 1386054 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT VWL 115/2 A 230V | — | — | — | |
| VAILLANT VWL 155/2 A 230V | — | — | — | |
| VAILLANT VWL 55/2 A 230V | — | — | — | |
| VAILLANT VWL 85/2 A 230V | — | — | — | |
| VAILLANT aroTHERM VWL 115/2 A 230V (2013) | — | — | — | |
| VAILLANT aroTHERM VWL 155/2 A 230V (2014) | — | — | — | |
| VAILLANT aroTHERM VWL 55/2 A 230V (2014) | — | — | — | |
| VAILLANT aroTHERM VWL 85/2 A 230V (2013) | — | — | — |
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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