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Vaillant temperature limiter for e.g. uniTOWER Split VWL 78/5 IS 0020273388
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Vaillant temperature limiter for e.g. uniTOWER Split VWL 78/5 IS 0020273388

€ 139.79 incl. VAT

Original spare part Vaillant. Type: Temperature limiter. Application: Heat pump / uniTOWER Split VWL 128/5 IS. Supplier code: 0020273388.

SKU: 80502052 Categories: , Brand:

Price and stock checked on 20 October 2026.

✓ In stock — delivery usually within 3–5 working days
EU delivery from € 17.95 · Shipping & payment

Price incl. VAT. Any delivery costs are calculated in the basket — see shipping & delivery.

Does this fit my appliance?
ApplicationHeat pump
Series / modeluniTOWER Split VWL 78/5 IS and 3 other models
Vaillant number0020273388
Article number80502052
Not sure? Search by article or manufacturer number or check with the manufacturer or your installer.
All spare parts for Vaillant uniTOWER Split VWL 78/5 IS →
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Vaillant temperature limiter for e.g. uniTOWER Split VWL 78/5 IS 0020273388: original Vaillant spare part, type: Temperature limiter. Application: Heat pump (uniTOWER Split VWL 128/5 IS). Manufacturer number: 0020273388; Instalpunt article number: 80502052.

According to the Vaillant parts lists, this part fits 4 models, including Vaillant uniTOWER Split VWL 58/5 IS, Vaillant uniTOWER Split VWL 78/5 IS and Vaillant uniTOWER Split VWL 128/5 IS. The full list is under “Fits”.

In stock: order before 14:00 and it ships the same working day; delivery within the EU usually takes 3–5 working days.

Check the rating plate of your appliance before ordering; if in doubt, ask the manufacturer or your installer.

Product information: Vaillant temperature limiter for e.g. uniTOWER Split VWL 78/5 IS 0020273388

BrandVaillant spare parts
Vaillant manufacturer number0020273388
Instalpunt article number80502052
EAN4024074848562
Part typeTemperature limiter (All Vaillant sensors · sensors of all brands)
ApplicationHeat pump
Suitable for4 Vaillant models (see list)
DeliveryIn stock, delivery in 3–5 working days
Price€ 139,79 incl. VAT
OriginSupplied through the official technical wholesale channel, under Vaillant number 0020273388

Fits 4 Vaillant models

The part Vaillant temperature limiter for e.g. uniTOWER Split VWL 78/5 IS 0020273388 is in the official parts list of these Vaillant appliances. Click a model for the complete parts list and exploded view.

Vaillant Heat pump (4)

Check the rating plate of your appliance. Not sure whether this part fits? Check with the manufacturer or your installer; with the correct manufacturer number you can order it here directly.

Position on the parts diagram

This spare part is shown as position 08 on the parts drawing. Open the drawing for the appliance and click the number to check that you have the right spare part.

For which fault is a Vaillant temperature limiter replaced?

According to the fault code database, these Vaillant fault codes point to this type of part. Always check first that the code matches the appliance type on the rating plate.

CodeWhat is going on
F.00The flow temperature sensor signal is interrupted.
F.01The return temperature sensor signal is interrupted.
F.02The hot water connection temperature sensor signal is interrupted.
F.022Pressure loss in the heating circuit due to a leak or air lock, heating circuit pressure sensor defective
F.03The cylinder temperature sensor signal is interrupted.
F.042Sensor not connected or sensor input short-circuited

All Vaillant fault codes explained

Indicative: the same code can have a different cause depending on the situation. Have work on gas, flue or burner adjustment carried out by a qualified installer.

Frequently asked questions about this item

Does the Vaillant temperature limiter for e.g. uniTOWER Split VWL 78/5 IS 0020273388 fit my appliance?
This part is in the parts list of 4 Vaillant models, namely the uniTOWER Split VWL 58/5 IS, uniTOWER Split VWL 78/5 IS, uniTOWER Split VWL 128/5 IS, uniTOWER VIH QW 190/6 E. The model type is on the rating plate of your appliance. If in doubt, ask the manufacturer or your installer.
What is the delivery time for the Vaillant temperature limiter for e.g. uniTOWER Split VWL 78/5 IS 0020273388?
This item is in stock. Ordered before 14:00, it ships the same working day and usually arrives within three to five working days.
Can I return this item?
Yes, unused and in the original packaging within 14 days of receipt. Unpacked or fitted items and electronics such as PCBs cannot be returned. How to register a return is explained on returns.
What does shipping cost?
Shipping costs € 17.95 to Austria, Denmark, Italy, Spain and Sweden and € 24.95 to other EU countries. In-stock items ordered before 2 pm are dispatched the same working day; delivery usually takes 3–5 working days. Details: Shipping.
I have a fault code, which part do I need?
Look up the code in the fault code finder: per brand and appliance it shows what the code means and which part goes with it. If the code is listed with this part, the part belongs to that fault.

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