Vaillant 3-Way Valve VMW ES 242 2 3 R2 Ref. 0020073799
RefurbishedVaillant3-way valves

Vaillant 3-Way Valve VMW ES 242 2 3 R2 Ref. 0020073799

70 €VAT includedIn stock · 6 units

3-way valve: refurbished spare part that diverts water between heating and domestic hot water. Useful if it provides hot water but does not heat radiators, or vice versa. Compatible with VMW 242/2-3 R1, VMW 242/2-3 R2, VMW 242-3 (ref. 0020073799). Includes a one-year warranty and delivery within 2–4 working days in the EU.

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Delivery in 2–4 working days
1-year warranty
14-day return
Technical support

Key Data

Reference
0020073799
Brand
Vaillant
Type of part
3-way valves
Available units
6 units in stock
Status
Refurbished
Warranty
1 year
Shipping
2–4 working days (EU)
Return
14 days

The same part (ref. 0020073799) equips these models. Verified compatibility; check the reference before purchasing.

VMW 242 (ES / 2-3 / 2-5)

  • VMW 242/2-3 R1
  • VMW 242/2-3 R2
  • VMW 242-3
  • VMW 242-5
  • VMW 242/2-5 R1
  • VMW 242/2-5 R2
  • VMW 242/2-5 R3

VM 242

  • VM 242-5
  • VM 242/2-5 R1
  • VM 242/2-5 R2
  • VM 242/2-5 R3

VMW 240 / VM 240

  • VMW 240-3
  • VMW 240-5
  • VMW 240/2-5 R3
  • VM 240-5
  • VM 240/2-5 R1
  • VM 240/2-5 R3

VMW 280 / 282 / VM 280 / 282

  • VMW 280-5
  • VMW 282-5
  • VMW 282/2-5 R1
  • VMW 282/2-5 R2
  • VM 280-5
  • VM 282-5

Fault codes related to this part (not the entire boiler). They usually have more possible causes: first rule out electrodes, wiring/connections, and gas supply. Verified with ≥3 sources.

CodeWhat does it mean?Cause and diagnosis (this part)
F.318The 3-way motorised valve is not moving.The 3-way valve is seized or its motor/head is not functioning, so it does not switch between heating and DHW. Verify order and path: check voltage/continuity at the connector and observe the movement of the spindle during the service test.
F.326The hydraulic test of the sensor and the actuator has determined that at least two hydraulic components are not functioning.If the V3V is blocked or defective, the hydraulic test detects the lack of response. Check with the actuator test: inspect the movement of the V3V and the condition of the connector/wiring harness.
F.081The boost has failed.The DHW/storage tank charging does not occur when the 3-way valve does not switch to the sanitary position (valve defective or stuck). Verify by making a DHW demand and checking that the 3-way valve receives the command and changes position; also check the wiring harness.
How do I know if this 3-way valve is for my boiler?
Verify the reference 0020073799 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part.
What is it used for?
The 3-way valve diverts the water between the heating circuit and the domestic hot water (DHW) circuit.
Does it provide hot water but not heat the radiators (or vice versa)?
Typical symptom that the valve or its motor is not switching; check the actuator motor and ensure the body is not seized.
Which models is it suitable for?
Part shared by various models (see Compatibility). If your model does not appear, send us a photo of the marking and we will confirm it.
Installation and recommendations
Check if you need the motor, the body, or the complete assembly.
What does refurbished mean and what coverage does it have?
Part removed from a boiler out of service, inspected and tested. Includes 1-year warranty and 14-day return policy. Delivery within 2–4 working days in the EU.

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