Vaillant spare parts

Original parts for all Vaillant appliances. Choose your model below for the complete parts list (often with an exploded view) and order directly.

In brief

Instalpunt supplies 4,105 original Vaillant parts for 466 models, with part number, price and exploded view. Order online.

4.105Spare parts
466Models
€5.55From

→ View the complete Vaillant brand page with appliances, hot water cylinders and buying advice.

Popular Vaillant series

Looking for a wear part for a common appliance? These pages show, per series, the most frequently replaced parts (fan, pump, electrode, diverter valve, sensors) and all the models in that series.

Vaillant parts by appliance family

Vaillant parts by type

Looking for a specific type of part? For each type, all Vaillant spare parts are listed with price, stock and the models they fit.

Vaillant air conditioning indoor units

Vaillant air conditioning outdoor units

Vaillant hot water cylinders

Vaillant buffer tanks

Vaillant boilers

Vaillant instantaneous water heaters

Vaillant MVHR units

Vaillant heat pumps

Vaillant solar water heaters

Recognising and ordering original Vaillant parts

An original Vaillant part is the part that Vaillant itself supplies for the appliance, with the manufacturer part number of Vaillant. For Vaillant, that is 10 digits starting with 0020 (for example 0020213146); older parts have 6 digits (for example 130853). That number is on the old part, in the exploded view of your model and on every Instalpunt product page (also in the title), so you can compare them one to one.

Which appliance do I have? Brand, type and year of manufacture are on the rating plate. How to read the rating plate of your Vaillant.
Know the part number? Search directly by manufacturer number or part number in the spare parts catalogue; how to find the right part.
Original or alternative? When an alternative is possible and when it is not.
Fault code? View the Vaillant fault codes with the cause and the part that is usually replaced.
Delivery, returns and warranty: stock items: shipping to EU countries from €17.95 (€24.95 for more distant countries), usually 3–5 working days (shipping); made-to-order items are ordered specially for you; the 14-day right of withdrawal applies (returns conditions). All parts carry the manufacturer's warranty of Vaillant (warranty). More about the shop: about Instalpunt.

Please note: we do not check whether a part fits your appliance. Compare the manufacturer number with the number on your old part or in the exploded view of your model; if in doubt, check with Vaillant or your installer.

Vaillant fault code? This is the part you usually need

Your Vaillant appliance is showing a fault code? Below you can see, for common codes, which part is usually the cause – ready to order.

Fault code	What is going on	Part
F.00	The flow temperature sensor signal is interrupted.	View sensors
F.01	Ignition fault (no flame detection), no gas / gas tap closed, no ignition	View electrodes
F.01	The return temperature sensor signal is interrupted.	View sensors
F.02	The hot water connection temperature sensor signal is interrupted.	View sensors
F.022	Pressure loss in the heating circuit due to a leak or air lock, heating circuit pressure sensor defective	View sensors
F.03	The cylinder temperature sensor signal is interrupted.	View sensors
F.037	Obstruction in the product's air duct, fan motor defective or not connected, connection between the main PCB and the fan PCB damaged or interrupted	View fans
F.04	Fan fault	View fans
F.042	The product coding resistor is defective or missing, fan motor defective or not connected, plug X25 not connected or connected incorrectly	View fans
F.042	Break in the heat exchanger wiring harness	View heat exchangers
F.042	Sensor not connected or sensor input short-circuited	View sensors
F.05	High-limit fault, flow temperature too high (pump not running, but has voltage)	View pumps
F.05	open circuit in outdoor temperature sensor	View sensors
F.07	Tap NTC fault, NTC is broken or wiring faulty	View sensors
F.070	Replacement of the control PCB and display PCB	View PCBs
F.073	Sensor not connected or sensor input short-circuited	View sensors
F.08	Return sensor	View sensors
F.086	Contact S20 on heat pump main PCB (HMU) open, incorrect high-limit thermostat setting, flow temperature sensor (heat pump, gas boiler, system sensor) reading too low	View PCBs
F.09	Water pressure sensor broken or wiring faulty	View sensors
F.10	short circuit in NTC flow sensor	View sensors
F.103	Wrong thermostat PCB installed on the outdoor unit	View PCBs
F.105	Gas valve offset in D.052 set incorrectly	View gas valves
F.11	Return sensor short circuit	View sensors
F.11	No signal on the main PCB, fan defective	View fans
F.1117	Fuse defective, incorrect electrical connections, mains voltage too low, compressor / off-peak power supply not connected, utility blocking time more than three hours	View compressors
F.12	Short circuit at DHW outlet temperature sensor (NTC)	View sensors
F.1288	Sensor defective or not correctly connected to the VWZ AI heat pump control module.	View sensors
F.13	Cylinder temperature sensor short circuit	View sensors
F.15	short circuit in outdoor temperature sensor	View sensors
F.16	Short circuit in room temperature sensor	View sensors
F.19	CH NTC (flow and/or return) open circuit, connector loose from NTC, break in wiring, NTC defective	View sensors
F.194	PCB mains adapter defective	View PCBs
F.23	Lack of water (temperature difference between flow and return sensor too large)	View sensors
F.24	Low-water protection contact closed without the pump running	View pumps
F.25	Break in the wiring harness of the burner, fan and gas valve	View gas valves
F.26	Gas valve stepper motor current implausible	View gas valves
F.27	Incorrect ionisation measurement	View electrodes
F.27	Ionisation signal with gas valves closed	View gas valves
F.279	The hot gas thermostat switches the heat pump off if the pressure in the refrigerant circuit is too high. After a waiting time the heat pump makes another start attempt. After three consecutive failed start attempts an error is displayed. Refrigerant circuit temperature max.: 130 °C. Waiting time: 5 min (after the first occurrence). Waiting time: 30 min. (after the second and each subsequent occurrence). Error counter reset when both conditions are with: heat demand without premature switch-off. 60 min of trouble-free operation.	View thermostats
F.28	The flame signal was not detected during the ignition phase	View electrodes

For guidance only: the same code can have a different cause depending on the model. Not sure? Write to us or have the appliance checked by a qualified professional.

Frequently asked questions

Which Vaillant spare parts does Instalpunt supply?

Instalpunt supplies 4,105 original parts for 466 Vaillant models, including screws, gaskets, O-rings, pipes and holders. Each part is listed in the catalogue with part number, price and stock status.

How do I find the right part for my Vaillant appliance?

Choose your model above to see the complete parts list (for 332 models with an exploded view). The model type is on the rating plate of the appliance. Already know the part number? Then search by number directly in the spare parts catalogue.

For which Vaillant models are parts available?

Among others for the ecoTEC plus VHR 34/5-5 I R1, ecoTEC plus VHR 34/5-5 I R2, ecoTEC plus VHR 34/5-5 I R3, ecoTEC plus VHR 34/5-5 I, ecoTEC plus VHR 34/5-5 I R4, aroTHERM Split plus VWL 58/8.2 IS C2 and 460 other models. Is your model not listed? Ask the manufacturer for the correct part number; with that number you can find it using the search function.

Are these original Vaillant parts?

Yes. They are original manufacturer parts for Vaillant appliances, with the official manufacturer part number. That way you can be sure the part fits and the warranty on your appliance is preserved.

How much do Vaillant spare parts cost?

Parts for Vaillant range from €5.55 to €8,780.39 incl. VAT. A frequently ordered part is the Vaillant gasket 3/4" (10 pcs) for €7.84. The current price of each part is shown in the list.

Does a part from another Vaillant model also fit my appliance?

Only if the part number is the same. Vaillant often uses the same part in several models; if the same part number is listed for your model, it fits. If the number differs, order the part listed for your model. Not sure? Check with the manufacturer or your installer.

How quickly will I receive a Vaillant part?

Parts in stock: shipping to EU countries from €17.95 (€24.95 for more distant countries), usually 3–5 working days. For made-to-order items, the delivery time is shown on the product page.

Can I return a Vaillant part?

You have a 14-day right of withdrawal. Return unused parts, in their original packaging where possible; details are in our returns conditions.