Vaillant Ecotec Plus PCB VMW 346 5 5 Ref. 0020135165
RefurbishedVaillantPCBs (control boards)

Vaillant Ecotec Plus PCB VMW 346 5 5 Ref. 0020135165

120 €VAT includedIn stock · 1 unit

PCB (control board): refurbished spare part that controls the ignition, modulation, and safety features of the boiler. Useful if the boiler does not ignite, locks up, or the display is unresponsive. Compatible with VM 246/5-5, VM 306/5-5, VM 386/5-5 (ref. 0020135165). 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
0020135165
Brand
Vaillant
Type of part
PCBs (control boards)
Available units
1 unit in stock
Status
Refurbished
Warranty
1 year
Shipping
2–4 working days (EU)
Return
14 days

The same part (ref. 0020135165) equips these models. Verified compatibility; check the reference before purchasing.

ecoTEC plus

  • VM 246/5-5
  • VM 306/5-5
  • VM 386/5-5
  • VMW 246/5-5
  • VMW 306/5-5
  • VMW 346/5-5

ecoTEC pro

  • VMW 236/5-3
  • VMW 286/5-3
  • VMW 236/5-5F

ecoBLOCK plus / VMI

  • VMI 306/5-5 R4
  • VMI 346/5-5 R4

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.63EEPROM fault: memory error of the boiler's electronics.It is the code most directly attributable to this PCB: the official manual and the SAT define it as 'electronics fault' (EEPROM memory of the PCB corrupted/damaged). It is verified because it persists after reset and disappears when the PCB is replaced.
F.64Electronic fault/sensor: short circuit in flow or return NTC, or fault in the electronics itself.The PCB causes it when its NTC reading circuit fails; it is checked by measuring the flow/return NTC sensors (if they give the correct value and the error persists, the cause is the electronics/PCB).
F.61Fault in the gas valve control (unable to activate the gas valve).The defective PCB is one of the documented causes (along with wiring harness to ground/short circuit and gas valve). It is verified by first ruling out the harness and the gas valve; if they are fine, the cause is the PCB.
F.62Delay fault in gas valve disconnection.Defective printed circuit board is a documented cause (along with leaking gas valve and delayed flame signal). It is verified by ruling out the gas valve and electrode; if it persists, the cause is the PCB.
F.67Flame detector input signal not plausible / out of limits: electronics fault.The manual and the SAT indicate 'defective electronics' as the cause; the control board misinterprets the flame signal. It is checked by ruling out the ionization electrode and wiring; if the flame signal is correct and the error persists, the cause is the PCB.
How do I know if this PCB is for my boiler?
Verify the reference 0020135165 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part. It is a Vaillant part.
What is it used for?
The PCB controls the ignition, modulation, sensor readings, and safety features of the boiler.
Is the boiler not igniting, locking out, or is the control board unresponsive?
After ruling out mains voltage, fuse, and connectors, a damaged PCB causes lockouts, blackouts, or erratic display. Repair the external cause before installing the new one.
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
After installation, a technician must adjust the service parameters (type of gas, power settings) and check combustion and safety features.
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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