Vaillant uniTOWER Split VWL 78/5 IS spare parts
In brief
Instalpunt supplies 128 original parts for the Vaillant uniTOWER Split VWL 78/5 IS, including sensors, pressure sensors, pumps. Order online.
- 128Spare parts
- 17In stock
- €6.21From
- 20Types
- availableExploded view
Looking for parts for the Vaillant uniTOWER Split VWL 78/5 IS (heat pump)? Below are all 128 original parts, grouped by part type, with the matching exploded view. Choose a type to jump straight to the right table.
View the interactive exploded view →Quick links to the right part for the Vaillant uniTOWER Split VWL 78/5 IS
| Part | From | Delivery |
|---|---|---|
| Pressure sensor Vaillant pressure sensor VHR18-22/3C24-28/3C VHR CW3 4/3 for ecoTEC plus and ecoTEC pro etc. | €20.95 | In stock |
| Pump Vaillant pump for e.g. uniTOWER Split VWL 78/5 IS 0020269327 | €222.95 | In stock |
Prices incl. VAT, taken directly from our checkout. Below is the complete parts list for this model.
Installer or self-employed engineer? Create a business account: prices excl. VAT and invoices in your company name.
- Sensors 4
- Pressure sensors 1
- Pumps 1
- Heat exchangers 1
- PCBs and controls 1
- Diverter valves and hydroblocks 2
- Expansion vessels 1
- Siphons and condensate drains 1
- Displays and controls 1
- Valves 6
- Anodes 1
- Pressure gauges 1
- Motors 2
- Electrical parts 2
- Cables and wiring harnesses 8
- Gaskets and seals 9
- Pipes, tubes and hoses 25
- Casing and panels 12
- Insulation 6
- Fixing material 30
- Other parts 13
Sensors for the Vaillant uniTOWER Split VWL 78/5 IS (4) all Vaillant sensors →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant temperature sensor | 8050664 Mfr. no. 0020148022 | €34.95 | In stock | View & order |
| Vaillant sensor for e.g. aroTHERM Pro VWL 75/7.1 A 230V 0020269357 | 80501001 Mfr. no. 0020269357 | €22.95 | In stock | View & order |
| Vaillant temperature limiter for e.g. uniTOWER Split VWL 78/5 IS 0020273388 | 80502052 Mfr. no. 0020273388 | €140.95 | In stock | View & order |
| Vaillant sensor for e.g. uniTOWER VIH QW 190/1 E (0010019709) 0020187358 | 8050581 Mfr. no. 0020187358 | €47.95 | Made-to-order item | View & order |
Pressure sensors for the Vaillant uniTOWER Split VWL 78/5 IS (1)
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant pressure sensor VHR18-22/3C24-28/3C VHR CW3 4/3 for ecoTEC plus and ecoTEC pro etc. | 8058957 Mfr. no. 0020059717 | €20.95 | In stock | View & order |
Pumps for the Vaillant uniTOWER Split VWL 78/5 IS (1) all Vaillant pumps →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant pump for e.g. uniTOWER Split VWL 78/5 IS 0020269327 | 80501143 Mfr. no. 0020269327 | €222.95 | In stock | View & order |
Heat exchangers for the Vaillant uniTOWER Split VWL 78/5 IS (1) all Vaillant heat exchangers →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant condenser for e.g. uniTOWER Split VWL 78/5 IS 0020273863 | 80501249 Mfr. no. 0020273863 | €474.95 | Made-to-order item | View & order |
PCBs and controls for the Vaillant uniTOWER Split VWL 78/5 IS (1) all Vaillant PCBs and controls →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant PCB 0010033772 for uniTOWER VWL 58/5, 78/5 and 128/5 IS | 80501677 Mfr. no. 0010033772 | €330.95 | Made-to-order item | View & order |
Diverter valves and hydroblocks for the Vaillant uniTOWER Split VWL 78/5 IS (2) all Vaillant diverter valves and hydroblocks →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant three-way valve for e.g. uniTOWER Split VWL 78/5 IS 0020269335 | 80501144 Mfr. no. 0020269335 | €117.95 | In stock | View & order |
| Vaillant hydro block for e.g. uniTOWER Split VWL 78/5 IS 0020269337 | 80501109 Mfr. no. 0020269337 | €59.95 | Made-to-order item | View & order |
Expansion vessels for the Vaillant uniTOWER Split VWL 78/5 IS (1) all Vaillant expansion vessels →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant expansion vessel 15 litre | 8050874 Mfr. no. 179048 | €166.95 | In stock | View & order |
Siphons and condensate drains for the Vaillant uniTOWER Split VWL 78/5 IS (1) all Vaillant siphons and condensate drains →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant condensate drain for e.g. uniTOWER Split VWL 78/5 IS 0020275081 | 80501472 Mfr. no. 0020275081 | €97.95 | Made-to-order item | View & order |
Displays and controls for the Vaillant uniTOWER Split VWL 78/5 IS (1) all Vaillant displays and controls →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant display for e.g. uniTOWER Split VWL 78/5 IS 0020269443 | 80501112 Mfr. no. 0020269443 | €102.95 | Made-to-order item | View & order |
Valves for the Vaillant uniTOWER Split VWL 78/5 IS (6) all Vaillant valves →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant valve for e.g. aroTHERM VWL 55/3 A 230V 0020266437 | 80500985 Mfr. no. 0020266437 | €24.95 | In stock | View & order |
| Vaillant air vent for e.g. aroTHERM VWL 75/6 A 0020278074 | 80500932 Mfr. no. 0020278074 | €35.95 | In stock | View & order |
| Vaillant drain cock for e.g. uniTOWER VIH QW 190/1 E (0010019709) 082244 | 80500263 Mfr. no. 082244 | €54.95 | Made-to-order item | View & order |
| Vaillant valve, Schrader (x5) | 80500948 Mfr. no. 0010027681 | €29.95 | Made-to-order item | View & order |
| Vaillant valve for e.g. uniTOWER VIH QW 190/1 E (0010019709) 0020174707 | 8050757 Mfr. no. 0020174707 | €103.95 | Made-to-order item | View & order |
| Vaillant service valve for e.g. uniSTOR VIH RW 200/2 B 0020187026 | 8050582 Mfr. no. 0020187026 | €31.95 | Made-to-order item | View & order |
Anodes for the Vaillant uniTOWER Split VWL 78/5 IS (1) all Vaillant anodes →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant anode for e.g. uniTOWER VIH QW 190/1 E (0010019709) 0020107795 | 8050851 Mfr. no. 0020107795 | €93.95 | Made-to-order item | View & order |
Pressure gauges for the Vaillant uniTOWER Split VWL 78/5 IS (1) all Vaillant pressure gauges →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant pressure gauge for e.g. uniTOWER VIH QW 190/1 E (0010019709) 0020233658 | 80500349 Mfr. no. 0020233658 | €102.95 | Made-to-order item | View & order |
Motors for the Vaillant uniTOWER Split VWL 78/5 IS (2) all Vaillant motors →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant actuator for e.g. uniTOWER Split VWL 78/5 IS 0020273842 | 80501145 Mfr. no. 0020273842 | €147.95 | Made-to-order item | View & order |
| Vaillant service valve insulation | 8050704 Mfr. no. 0020038596 | €22.95 | Made-to-order item | View & order |
Electrical parts for the Vaillant uniTOWER Split VWL 78/5 IS (2) all Vaillant electrical parts →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant strain relief | 8051468 Mfr. no. 078533 | €44.95 | Made-to-order item | View & order |
| Vaillant fuse 40at 10 pcs VHR10 to 45 for ecoTEC plus | 8058553 Mfr. no. 251957 | €28.95 | Made-to-order item | View & order |
Cables and wiring harnesses for the Vaillant uniTOWER Split VWL 78/5 IS (8) all Vaillant cables and wiring harnesses →
Gaskets and seals for the Vaillant uniTOWER Split VWL 78/5 IS (9) all Vaillant gaskets and seals →
Pipes, tubes and hoses for the Vaillant uniTOWER Split VWL 78/5 IS (25) all Vaillant pipes, tubes and hoses →
Casing and panels for the Vaillant uniTOWER Split VWL 78/5 IS (12) all Vaillant casing and panels →
Insulation for the Vaillant uniTOWER Split VWL 78/5 IS (6) all Vaillant insulation →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant insulation for e.g. uniTOWER VIH QW 190/1 E (0010019709) 0020233637 | 80500089 Mfr. no. 0020233637 | €26.95 | Made-to-order item | View & order |
| Vaillant insulation for e.g. uniTOWER VIH QW 190/1 E (0010019709) 0020233648 | 80500093 Mfr. no. 0020233648 | €27.95 | Made-to-order item | View & order |
| Vaillant insulation, (2 pcs) | 80500924 Mfr. no. 0020273331 | €22.95 | Made-to-order item | View & order |
| Vaillant insulation (4 pcs) | 80501014 Mfr. no. 0020275082 | €31.95 | Made-to-order item | View & order |
| Vaillant insulation for e.g. uniTOWER Split VWL 78/5 IS 0020269333 | 80500999 Mfr. no. 0020269333 | €43.95 | Made-to-order item | View & order |
| Vaillant insulation (set) for uniTOWER Split VWL 78/5 IS 0020278352 | 80501017 Mfr. no. 0020278352 | €48.95 | Made-to-order item | View & order |
Fixing material for the Vaillant uniTOWER Split VWL 78/5 IS (30) all Vaillant fixing material →
Other parts for the Vaillant uniTOWER Split VWL 78/5 IS (13)
Exploded views of the Vaillant uniTOWER Split VWL 78/5 IS
Click an exploded view to enlarge it. The position numbers are shown next to each part.
Fault code on your Vaillant uniTOWER Split VWL 78/5 IS? This is the part type involved
Common Vaillant fault codes and the part type that is usually the cause; the parts for this model are listed above. All codes explained: Vaillant fault codes.
| Code | What is going on | Part type |
|---|---|---|
| F.00 | The flow temperature sensor signal is interrupted. | Sensors |
| F.01 | The return temperature sensor signal is interrupted. | Sensors |
| F.02 | The hot water connection temperature sensor signal is interrupted. | Sensors |
| F.022 | Pressure loss in the heating circuit due to a leak or air lock, heating circuit pressure sensor defective | Sensors |
| F.03 | The cylinder temperature sensor signal is interrupted. | Sensors |
| F.042 | Break in the heat exchanger wiring harness | Heat exchangers |
For guidance only: the same code can have a different cause depending on the situation.
Other Vaillant heat pumps
- Vaillant aroCOLLECT VWL 11/4 SA (ODU) 33
- Vaillant aroTHERM VWL 105/5 AS 75
- Vaillant aroTHERM VWL 105/5 AS 400V 8
- Vaillant aroTHERM VWL 105/7.2 AS 230V S3 41
- Vaillant aroTHERM VWL 115/2 A 400V 80
- Vaillant aroTHERM VWL 125/5 AS 75
- Vaillant aroTHERM VWL 125/6 A 400V 111
- Vaillant aroTHERM VWL 125/6 A R1 400V 126
- Vaillant aroTHERM VWL 127/5 IS 76
- Vaillant aroTHERM VWL 155/2 A 400V 84
- Vaillant aroTHERM VWL 35/5 AS 72
- Vaillant aroTHERM VWL 35/6 A 95
Frequently asked questions
Which parts are available for the Vaillant uniTOWER Split VWL 78/5 IS?
The catalogue lists 128 original parts for the Vaillant uniTOWER Split VWL 78/5 IS, including sensors, pressure sensors, pumps, heat exchangers. All parts are listed above, grouped by type, with part number and price.
How much does a sensor for the Vaillant uniTOWER Split VWL 78/5 IS cost?
The sensors for this model cost between €20.26 and €182.95 incl. VAT. Check the table "Sensors" above for the right part number.
Are the parts for the Vaillant uniTOWER Split VWL 78/5 IS in stock?
17 of the 128 parts are in stock; shipping to EU countries from €17.95 (€24.95 for more distant countries), usually 3–5 working days. Parts marked "Made-to-order item" are ordered specially for you; the delivery time is shown on the product page.
How do I know which part I need for the Vaillant uniTOWER Split VWL 78/5 IS?
Search for the part by part number or use the exploded view of the Vaillant uniTOWER Split VWL 78/5 IS.
Are these original Vaillant parts?
Yes. All 128 parts in this list are original manufacturer parts for the Vaillant uniTOWER Split VWL 78/5 IS, supplied through the official technical wholesale channel and with the correct part number.
How much do parts for the Vaillant uniTOWER Split VWL 78/5 IS cost?
Parts for the Vaillant uniTOWER Split VWL 78/5 IS range from €6.21 to €2,134.00 incl. VAT. The exact price of each part is shown in the tables above.
Can I return a part?
You have a 14-day right of withdrawal. Return unused parts, in their original packaging where possible; details are in our returns conditions.