Vaillant aroTHERM VWL 77/5 IS spare parts

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In brief

Instalpunt supplies 77 original parts for the Vaillant aroTHERM VWL 77/5 IS, including sensors, pressure sensors, pumps. Order online.

77Spare parts
10In stock
€6.71From
18Types
availableExploded view

Looking for parts for the Vaillant aroTHERM VWL 77/5 IS (heat pump)? Below are all 77 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 left to the right part for the Vaillant aroTHERM VWL 77/5 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.	€22.63	In-stock items usually arrive within 3–5 working days, made-to-order items within 5–7 working days (a longer lead time is shown on the product page).
Pump Vaillant pump for e.g. uniTOWER Split VWL 78/5 IS 0020269327	€240.79	In-stock items usually arrive within 3–5 working days, made-to-order items within 5–7 working days (a longer lead time is shown on the product page).

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 1
Pressure sensors 1
Pumps 1
Heat exchangers 1
PCBs and controls 1
Diverter valves and hydroblocks 2
Expansion vessels 1
Displays and controls 1
Valves 2
Pressure gauges 1
Motors 1
Electrical parts 3
Cables and wiring harnesses 9
Gaskets and seals 6
Pipes, tubes and hoses 11
Casing and panels 6
Insulation 4
Fixing material 20
Other parts 5

Sensors for the Vaillant aroTHERM VWL 77/5 IS (1) all Vaillant sensors →

Part	Item no. / mfr. no.	Price	Stock
Vaillant sensor for e.g. aroTHERM Pro VWL 75/7.1 A 230V 0020269357	80501001 Mfr. no. 0020269357	€24.79	In stock	View & order

Pressure sensors for the Vaillant aroTHERM VWL 77/5 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	€22.63	In stock	View & order

Pumps for the Vaillant aroTHERM VWL 77/5 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	€240.79	In stock	View & order

Heat exchangers for the Vaillant aroTHERM VWL 77/5 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	€512.95	Made-to-order item	View & order

PCBs and controls for the Vaillant aroTHERM VWL 77/5 IS (1) all Vaillant PCBs and controls →

Part	Item no. / mfr. no.	Price	Stock
Vaillant PCB for e.g. aroTHERM VWL 77/5 IS 8000043835	80599974 Mfr. no. 8000043835	€306.67	In stock	View & order

Diverter valves and hydroblocks for the Vaillant aroTHERM VWL 77/5 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	€127.39	In stock	View & order
Vaillant hydro block for e.g. uniTOWER Split VWL 78/5 IS 0020269337	80501109 Mfr. no. 0020269337	€64.75	Made-to-order item	View & order

Expansion vessels for the Vaillant aroTHERM VWL 77/5 IS (1) all Vaillant expansion vessels →

Part	Item no. / mfr. no.	Price	Stock
Vaillant expansion vessel for e.g. aroTHERM Split plus VWL 77/8.2 IS 0020272916	80501243 Mfr. no. 0020272916	€139.27	Made-to-order item	View & order

Displays and controls for the Vaillant aroTHERM VWL 77/5 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	€111.19	Made-to-order item	View & order

Valves for the Vaillant aroTHERM VWL 77/5 IS (2) all Vaillant valves →

Part	Item no. / mfr. no.	Price	Stock
Vaillant air vent for e.g. aroTHERM VWL 75/6 A 0020278074	80500932 Mfr. no. 0020278074	€38.83	In stock	View & order
Vaillant safety valve 3 bar	80501368 Mfr. no. 0020275015	€25.87	In stock	View & order

Pressure gauges for the Vaillant aroTHERM VWL 77/5 IS (1) all Vaillant pressure gauges →

Part	Item no. / mfr. no.	Price	Stock
Vaillant pressure gauge for ecoTEC plus and ecoTEC pro etc.	8055028 Mfr. no. 0020144606	€57.19	Made-to-order item	View & order

Motors for the Vaillant aroTHERM VWL 77/5 IS (1) 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	€142.51	In stock	View & order

Electrical parts for the Vaillant aroTHERM VWL 77/5 IS (3) all Vaillant electrical parts →

Part	Item no. / mfr. no.	Price	Stock
Vaillant switch for e.g. aroTHERM VWL 77/5 IS 0020273853	80501127 Mfr. no. 0020273853	€111.19	Made-to-order item	View & order
Vaillant strain relief	8051468 Mfr. no. 078533	€48.55	Made-to-order item	View & order
Vaillant fuse 40at 10 pcs VHR10 to 45 for ecoTEC plus	8058553 Mfr. no. 251957	€31.27	Made-to-order item	View & order

Cables and wiring harnesses for the Vaillant aroTHERM VWL 77/5 IS (9) all Vaillant cables and wiring harnesses →

Part	Item no. / mfr. no.	Price	Stock
Vaillant wiring harness for e.g. aroTHERM Pro VWL 75/7.1 A 230V 0020210656	90170125 Mfr. no. 0020210656	€34.51	Made-to-order item	View & order
Vaillant connector coding E	80500108 Mfr. no. 0020242593	€24.79	Made-to-order item	View & order
Vaillant wiring harness for e.g. aroTHERM VWL 77/5 IS 0020233511	80500333 Mfr. no. 0020233511	€67.99	Made-to-order item	View & order
Vaillant cable for e.g. uniTOWER Split VWL 78/5 IS 0020266352	80500908 Mfr. no. 0020266352	€24.79	Made-to-order item	View & order
Vaillant wiring harness for e.g. aroTHERM VWL 77/5 IS 0020278875	80501132 Mfr. no. 0020278875	€99.31	Made-to-order item	View & order
Vaillant wiring harness for e.g. aroTHERM VWL 77/5 IS 0020273855	80501128 Mfr. no. 0020273855	€92.83	Made-to-order item	View & order
Vaillant wiring harness for e.g. aroTHERM VWL 77/5 IS 0020273851	80501246 Mfr. no. 0020273851	€119.83	Made-to-order item	View & order
Vaillant connector, set 0010034415	80501844 Mfr. no. 0010034415	€48.55	Made-to-order item	View & order
Vaillant display cable for ecoTEC plus and ecoTEC pro etc.	8050314 Mfr. no. 0020136630	€24.79	Made-to-order item	View & order

Gaskets and seals for the Vaillant aroTHERM VWL 77/5 IS (6) all Vaillant gaskets and seals →

Part	Item no. / mfr. no.	Price	Stock
Vaillant pump O-ring 23 x 3 mm 254/2XE 10 pcs	8055146 Mfr. no. 981234	€18.31	In stock	View & order
Vaillant O-ring 10 pcs for e.g. ecoTEC pure VHR 18-24/7-2 0020213151	80500070 Mfr. no. 0020213151	€33.43	Made-to-order item	View & order
Vaillant sealing ring (10 pcs) for e.g. MAG 175/1 Turbo 0020221039	80500896 Mfr. no. 0020221039	€23.71	Made-to-order item	View & order
Vaillant O-ring for e.g. aroTHERM VWL 77/5 IS 0020150055	8050519 Mfr. no. 0020150055	€11.83	Made-to-order item	View & order
Vaillant sealing ring per 10 pcs for ecoTEC plus and ecoTEC pro etc. (e.g. hrSOLIDE plus VHR 24-28/3-5 R3) 178993	8051419 Mfr. no. 178993	€23.71	Made-to-order item	View & order
Vaillant gasket (10 pcs) for e.g. uniTOWER Split VWL 78/5 IS 0020180085	8052945 Mfr. no. 0020180085	€24.79	Made-to-order item	View & order

Pipes, tubes and hoses for the Vaillant aroTHERM VWL 77/5 IS (11) all Vaillant pipes, tubes and hoses →

Part	Item no. / mfr. no.	Price	Stock
Vaillant pipe for e.g. aroTHERM VWL 77/5 IS 0020272912	80501006 Mfr. no. 0020272912	€30.19	Made-to-order item	View & order
Vaillant pipe for e.g. aroTHERM VWL 77/5 IS 0020269343	80501000 Mfr. no. 0020269343	€61.51	Made-to-order item	View & order
Vaillant pipe for e.g. aroTHERM VWL 77/5 IS 0020272902	80501115 Mfr. no. 0020272902	€60.43	Made-to-order item	View & order
Vaillant pipe for e.g. aroTHERM VWL 77/5 IS 0020269347	80501111 Mfr. no. 0020269347	€60.43	Made-to-order item	View & order
Vaillant pipe for e.g. aroTHERM VWL 77/5 IS 0020269345	80501110 Mfr. no. 0020269345	€60.43	Made-to-order item	View & order
Vaillant pipe for e.g. uniTOWER Split VWL 78/5 IS 0020268340	80501081 Mfr. no. 0020268340	€71.23	Made-to-order item	View & order
Vaillant pipe for e.g. aroTHERM VWL 77/5 IS 0010026069	80501027 Mfr. no. 0010026069	€76.63	Made-to-order item	View & order
Vaillant pipe for e.g. aroTHERM VWL 77/5 IS 0020272904	80501116 Mfr. no. 0020272904	€104.71	Made-to-order item	View & order
Vaillant pipe for aroTHERM VWL 77/5 IS 0010026066	80501153 Mfr. no. 0010026066	€139.27	Made-to-order item	View & order
Vaillant pipe for e.g. aroTHERM VWL 77/5 IS 0010028341	80501477 Mfr. no. 0010028341	€71.23	Made-to-order item	View & order
Vaillant adapter piece for e.g. ecoTEC plus VHR 30-34/5-5 R3 0020144608	8055031 Mfr. no. 0020144608	€25.87	Made-to-order item	View & order

Casing and panels for the Vaillant aroTHERM VWL 77/5 IS (6) all Vaillant casing and panels →

Part	Item no. / mfr. no.	Price	Stock
Vaillant front panel for e.g. aroTHERM VWL 77/5 IS 0020272930	80501244 Mfr. no. 0020272930	€157.63	Made-to-order item	View & order
Vaillant front panel (set)	80501181 Mfr. no. 0010027360	€448.15	Made-to-order item	View & order
Vaillant case for e.g. uniTOWER Split VWL 78/5 IS 0010028156	80501483 Mfr. no. 0010028156	€105.79	Made-to-order item	View & order
Vaillant diagnostic connector cover	8050301 Mfr. no. 0020136640	€24.79	Made-to-order item	View & order
Vaillant controller cover	8050344 Mfr. no. 0020136633	€31.27	Made-to-order item	View & order
Vaillant cover for e.g. uniTOWER VIH QW 190/1 E (0010019709) 0020141346	8050672 Mfr. no. 0020141346	€34.51	Made-to-order item	View & order

Insulation for the Vaillant aroTHERM VWL 77/5 IS (4) 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	€29.11	Made-to-order item	View & order
Vaillant insulation for e.g. aroTHERM VWL 77/5 IS 0020278350	80501015 Mfr. no. 0020278350	€30.19	Made-to-order item	View & order
Vaillant insulation for e.g. uniTOWER Split VWL 78/5 IS 0020269333	80500999 Mfr. no. 0020269333	€47.47	Made-to-order item	View & order
Vaillant insulation (set) for e.g. aroTHERM VWL 77/5 IS 0020278878	80501133 Mfr. no. 0020278878	€61.51	Made-to-order item	View & order

Fixing material for the Vaillant aroTHERM VWL 77/5 IS (20) all Vaillant fixing material →

Part	Item no. / mfr. no.	Price	Stock
Vaillant retainer for e.g. hrSOLIDE plus VHR 24-28/3-5 R3 0020107694	8050116 Mfr. no. 0020107694	€29.11	In stock	View & order
Vaillant screw 0020136643, 10 pcs	8050297 Mfr. no. 0020136643	€23.71	Made-to-order item	View & order
Vaillant screw epp	8050684 Mfr. no. 0020093237	€34.51	Made-to-order item	View & order
Vaillant screw 0020081349, 10 pcs	8053842 Mfr. no. 0020081349	€52.87	Made-to-order item	View & order
Vaillant screw 0020175810, 10 pcs	8053848 Mfr. no. 0020175810	€24.79	Made-to-order item	View & order
Vaillant screw 0020218206	90170036 Mfr. no. 0020218206	€24.79	Made-to-order item	View & order
Vaillant plug for e.g. ecoTEC plus VHR 35/40 CS/1-5 0020210117	80500059 Mfr. no. 0020210117	€11.83	Made-to-order item	View & order
Vaillant screw 0020272914, 10 pcs	80500918 Mfr. no. 0020272914	€24.79	Made-to-order item	View & order
Vaillant clamp (10 pcs) for e.g. uniTOWER Split VWL 78/5 IS 0020273844	80500926 Mfr. no. 0020273844	€30.19	Made-to-order item	View & order
Vaillant holder for e.g. aroTHERM VWL 77/5 IS 0020272918	80501007 Mfr. no. 0020272918	€30.19	Made-to-order item	View & order
Vaillant holder for e.g. aroTHERM VWL 77/5 IS 0020272928	80501008 Mfr. no. 0020272928	€31.27	Made-to-order item	View & order
Vaillant holder for e.g. uniTOWER Split VWL 78/5 IS 0020269320	80500998 Mfr. no. 0020269320	€31.27	Made-to-order item	View & order
Vaillant clip (10 pcs) for e.g. uniTOWER Split VWL 78/5 IS 0020269434	80501004 Mfr. no. 0020269434	€53.95	Made-to-order item	View & order
Vaillant screw connection for e.g. uniTOWER Split VWL 78/5 IS 0020269331	80501108 Mfr. no. 0020269331	€60.43	Made-to-order item	View & order
Vaillant spacer for aroTHERM VWL 77/5 IS 0020272924	80501119 Mfr. no. 0020272924	€53.95	Made-to-order item	View & order
Vaillant holder for e.g. aroTHERM VWL 77/5 IS 0020272922	80501118 Mfr. no. 0020272922	€69.07	Made-to-order item	View & order
Vaillant holder for e.g. aroTHERM VWL 77/5 IS 0020272926	80501120 Mfr. no. 0020272926	€75.55	Made-to-order item	View & order
Vaillant retaining spring per 10 pcs for e.g. hrSOLIDE plus VHR 24-28/3-5 R3 178992	8051436 Mfr. no. 178992	€48.55	Made-to-order item	View & order
Vaillant clip 5 pcs for e.g. ecoTEC plus VHR 30-34/5-5 R3 0020144599	8050243 Mfr. no. 0020144599	€29.11	Made-to-order item	View & order
Vaillant case holder 2 pcs	8050308 Mfr. no. 0020144611	€24.79	Made-to-order item	View & order

Other parts for the Vaillant aroTHERM VWL 77/5 IS (5)

Part	Item no. / mfr. no.	Price	Stock
Vaillant box for e.g. aroTHERM VWL 77/5 IS 0020278873	80501020 Mfr. no. 0020278873	€48.55	Made-to-order item	View & order
Vaillant backup heater for e.g. uniTOWER Split VWL 78/5 IS 0020269322	80501237 Mfr. no. 0020269322	€506.47	Made-to-order item	View & order
Vaillant PCB, BUHCU	80508294 Mfr. no. 0010027772	€201.91	Made-to-order item	View & order
Vaillant junction box for e.g. uniTOWER VIH QW 190/1 E (0010019709) 0020179948	8051106 Mfr. no. 0020179948	€49.63	Made-to-order item	View & order
Vaillant retainer 10 pcs MAG11-2/014-2/017-2/0 for e.g. aroTHERM VWL 75/6 A 108601	8056706 Mfr. no. 108601	€35.59	Made-to-order item	View & order

Exploded views of the Vaillant aroTHERM VWL 77/5 IS

Click an exploded view to enlarge it. The position numbers are shown next to each part.

Fault code on your Vaillant aroTHERM VWL 77/5 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

← All Vaillant parts

Frequently asked questions

Which parts are available for the Vaillant aroTHERM VWL 77/5 IS?

The catalogue lists 77 original parts for the Vaillant aroTHERM VWL 77/5 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 aroTHERM VWL 77/5 IS cost?

The sensors for this model cost €21.88 incl. VAT. Check the table "Sensors" above for the right part number.

Are the parts for the Vaillant aroTHERM VWL 77/5 IS in stock?

10 of the 77 parts are in stock; shipping to EU countries from €12.95 (€16.95 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 aroTHERM VWL 77/5 IS?

Search for the part by part number or use the exploded view of the Vaillant aroTHERM VWL 77/5 IS.

Are these original Vaillant parts?

Yes. All 77 parts in this list are original manufacturer parts for the Vaillant aroTHERM VWL 77/5 IS, delivered with the correct part number.

How much do parts for the Vaillant aroTHERM VWL 77/5 IS cost?

Parts for the Vaillant aroTHERM VWL 77/5 IS range from €6.71 to €613.93 incl. VAT. The exact price of each part is shown in the tables above.

Can I return a part?

As a consumer you have a 14-day right of withdrawal. You may unpack and inspect the part; do not install or connect it. For a part that has been installed, connected or damaged we deduct the diminished value, up to the full price for circuit boards.