Vaillant MAG 440/9 W Open spare parts
In brief
Instalpunt supplies 47 original parts for the Vaillant MAG 440/9 W Open, including gas valves and gas control, thermostats and controls, displays and controls. Order online.
- 47Spare parts
- 13In stock
- €5.89From
- 8Types
Looking for parts for the Vaillant MAG 440/9 W Open (instantaneous water heater)? Below are all 47 original parts, grouped by part type. Choose a type to jump straight to the right table.
- Gas valves and gas control 1
- Thermostats and controls 1
- Displays and controls 1
- Valves 3
- Gaskets and seals 15
- Pipes, tubes and hoses 2
- Casing and panels 1
- Fixing material 9
- Other parts 14
Gas valves and gas control for the Vaillant MAG 440/9 W Open (1) all Vaillant gas valves and gas control →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant gas section MAG250-440/9 b 440/9 A25 pressure regulator | 8053700 Mfr. no. 215604 | €103.95 | Made-to-order item | View & order |
Thermostats and controls for the Vaillant MAG 440/9 W Open (1) all Vaillant thermostats and controls →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant thermostatic element MAG/7TZW 19/2XZ-R1 | 8051790 Mfr. no. 171125 | €45.95 | In stock | View & order |
Displays and controls for the Vaillant MAG 440/9 W Open (1) all Vaillant displays and controls →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant knob for e.g. MAG 275/10EW Turbo 0020107732 | 8050001 Mfr. no. 0020107732 | €21.95 | Made-to-order item | View & order |
Valves for the Vaillant MAG 440/9 W Open (3) all Vaillant valves →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant water flow regulator MAG250-440/9/10/1219-24/2 | 8050388 Mfr. no. 012946 | €18.95 | In stock | View & order |
| Vaillant water stop valve MAG135/771/11/12 | 8050995 Mfr. no. 081712 | €56.95 | Made-to-order item | View & order |
| Vaillant diverter tap/shower MAG | 8052255 Mfr. no. 950183 | €135.95 | Made-to-order item | View & order |
Gaskets and seals for the Vaillant MAG 440/9 W Open (15) all Vaillant gaskets and seals →
Pipes, tubes and hoses for the Vaillant MAG 440/9 W Open (2) all Vaillant pipes, tubes and hoses →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant union nut 3/4" | 8053360 Mfr. no. 080177 | €22.95 | Made-to-order item | View & order |
| Vaillant union nut 1" | 8057810 Mfr. no. 080196 | €11.95 | Not available | View & order |
Casing and panels for the Vaillant MAG 440/9 W Open (1) all Vaillant casing and panels →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant cover plate MAG250/9-400/9 | 8054780 Mfr. no. 075544 | €25.95 | Made-to-order item | View & order |
Fixing material for the Vaillant MAG 440/9 W Open (9) all Vaillant fixing material →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant screw MAG250-440/9 Turbo/9Turbo275/10EW | 8051335 Mfr. no. 105812 | €10.95 | Made-to-order item | View & order |
| Vaillant screw MAG VCW VUW brass | 8050060 Mfr. no. 010050 | €22.95 | Made-to-order item | View & order |
| Vaillant screw 2 x 981898 VCW180-282E solo sch. MAG/9 Turbo/7 | 8050420 Mfr. no. 155614 | €23.95 | Made-to-order item | View & order |
| Vaillant screw TTB 8 x 4 mm MAG | 8051980 Mfr. no. 235739 | €11.95 | Not available | View & order |
| Vaillant screw m4x8 | 8050737 Mfr. no. 060018 | €21.95 | Made-to-order item | View & order |
| Vaillant gas strainer retaining spring | 8057796 Mfr. no. 080067 | €11.95 | Made-to-order item | View & order |
| Vaillant sleeve MAG250/9/10/12-440/9/10/12 Turbo/10EW | 8050082 Mfr. no. 0020107726 | €21.95 | Made-to-order item | View & order |
| Vaillant ring MAG250-440/9Turbo/9Turbo 275/10EW | 8053140 Mfr. no. 292211 | €25.95 | Made-to-order item | View & order |
| Vaillant plug 3/4 | 8055830 Mfr. no. 950017 | €25.95 | Made-to-order item | View & order |
Other parts for the Vaillant MAG 440/9 W Open (14)
Fault code on your Vaillant MAG 440/9 W Open? 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.
| Code | What is going on | Part type |
|---|---|---|
| F.105 | Gas valve offset in D.052 set incorrectly | Gas valves and gas control |
| F.25 | Break in the wiring harness of the burner, fan and gas valve | Gas valves and gas control |
| F.26 | Gas valve stepper motor current implausible | Gas valves and gas control |
| F.27 | Ionisation signal with gas valves closed | Gas valves and gas control |
| 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. | Thermostats and controls |
For guidance only: the same code can have a different cause depending on the situation.
Other Vaillant instantaneous water heaters
- Vaillant MAG 125/11 OZ Open 50
- Vaillant MAG 11, 12 Open Propane 50
- Vaillant MAG 11-0/0 XZ Open 56
- Vaillant MAG 135/11 O Open 48
- Vaillant MAG 135/11 XZ Open 50
- Vaillant MAG 135/12 XZ Open 50
- Vaillant MAG 135/7 TTB Open 48
- Vaillant MAG 135/71 Open 45
- Vaillant MAG 135/71 SO17 Open 47
- Vaillant MAG 135/71 TTB Open 48
- Vaillant MAG 14-0/0 GX Open 62
- Vaillant MAG 14-0/0 XI Open 63
Frequently asked questions
Which parts are available for the Vaillant MAG 440/9 W Open?
The catalogue lists 47 original parts for the Vaillant MAG 440/9 W Open, including gas valves and gas control, thermostats and controls, displays and controls, valves. All parts are listed above, grouped by type, with part number and price.
How much does a gas valve for the Vaillant MAG 440/9 W Open cost?
The gas valves and gas control for this model cost €109.77 incl. VAT. Check the table "Gas valves and gas control" above for the right part number.
Are the parts for the Vaillant MAG 440/9 W Open in stock?
13 of the 47 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 MAG 440/9 W Open?
Search for the part by part number or use the parts list of the Vaillant MAG 440/9 W Open. Is your appliance showing a fault code? The fault code table shows the matching part type.
Are these original Vaillant parts?
Yes. All 47 parts in this list are original manufacturer parts for the Vaillant MAG 440/9 W Open, supplied through the official technical wholesale channel and with the correct part number.
How much do parts for the Vaillant MAG 440/9 W Open cost?
Parts for the Vaillant MAG 440/9 W Open range from €5.89 to €160.74 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.