Vaillant Eco Tec Plus Gas Valve VMW ES 306 5 5 Ref. 0020146733
RefurbishedVaillantGas valves

Vaillant Eco Tec Plus Gas Valve VMW ES 306 5 5 Ref. 0020146733

85 €VAT includedIn stock · 1 unit

Gas valve: refurbished spare part that regulates and modulates the gas flow to the burner. Useful if there are ignition faults or the flame does not modulate. Compatible with VMW 246/5-5, VMW 306/5-5, VMW 346/5-5 (ref. 0020146733). 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
0020146733
Brand
Vaillant
Type of part
Gas valves
Available units
1 unit in stock
Status
Refurbished
Warranty
1 year
Shipping
2–4 working days (EU)
Return
14 days

The same part (ref. 0020146733) equips these models. Verified compatibility; check the reference before purchasing.

EcoTec Plus VMW (combi)

  • VMW 246/5-5
  • VMW 306/5-5
  • VMW 346/5-5

EcoTec Plus VM (heating only)

  • VM 246/5-5
  • VM 306/5-5
  • VM 346/5-5

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.28Start-up fault: ignition failedIf THIS gas valve (0020146733) does not open or is misadjusted (offset/calibration), insufficient gas reaches the burner during ignition. Check voltage/control at the connector, adjustment of the gas block, and pressures at test points during the ignition test.
F.29Ignition and control error during operation, the flame is off.A faulty or poorly modulated gas valve can cut off or fail to stabilise the flow, causing the flame to extinguish during operation. Check modulation/control voltage during operation and the adjustment/offset and pressure at the gas test point.
F.61Gas valve activation errorThe coil/actuator of THIS valve is open/short-circuited or not receiving the command from the PCB, preventing its opening/closing. Check coil continuity/ohmage, command voltage, and harness/connector to the valve assembly.
F.62Gas valve disconnection delayDelayed closure or internal leak in THIS valve causes the flame signal to persist after the shutdown command. Check the tightness of the assembly and ensure that the pressure at the burner connection drops to zero when the demand is cut (and immediate cessation of ionisation).
How do I know if this gas valve is the one for my boiler?
Verify the reference 0020146733 printed and ensure your model is on the list of compatibles; also compare the connections with the original part. It is a Honeywell (Resideo) VK8515MR4571 part.
What is it used for?
The gas valve regulates and modulates the gas flow to the burner.
Ignition faults, does not modulate, or smells of gas?
It could be the gas valve. IMPORTANT: gas handling ONLY by an authorised technician.
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
Installation and pressure adjustment by authorised technician; mandatory leak check.
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.

Spare Parts Related Boiler Eco Tec Plus VMW ES 306 5 5

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