Vaillant Ecotec Plus PCB VMW 346 5 5 Ref. 0020135165
In Vaillant boilers from the ecoTEC Plus range, the Vaillant Ecotec Plus VMW 346 5 5 PCB (control board) acts as the brain of the system, controlling the ignition, burner modulation, and the pump. If this part fails, the boiler may not start, lock out, or exhibit erratic behavior. Users may notice issues such as fault codes F.61, F.62, F.63, F.64, or F.67. It is compatible with models such as VM 246/5-5, VM 306/5-5, and VMW 346/5-5, among others. It is recommended to replace it upon detecting any of these symptoms or faults.
VAT included
Consult via WhatsAppVaillant boilers compatible with reference 0020135165
PCB with reference 0020135165. 11 verified compatibilities: VM 246/5-5 and VM 306/5-5.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Vaillant VM 246/5-5 | ecoTEC plus | Contrasted |
| Vaillant VM 306/5-5 | ecoTEC plus | Contrasted |
| Vaillant VM 386/5-5 | ecoTEC plus | Contrasted |
| Vaillant VMW 246/5-5 | ecoTEC plus | Contrasted |
| Vaillant VMW 306/5-5 | ecoTEC plus | Contrasted |
| Vaillant VMW 346/5-5 | ecoTEC plus | Contrasted |
| Vaillant VMW 236/5-3 | ecoTEC pro | Contrasted |
| Vaillant VMW 286/5-3 | ecoTEC pro | Contrasted |
| Vaillant VMW 236/5-5F | ecoTEC pro | Contrasted |
| Vaillant VMI 306/5-5 R4 | ecoBLOCK plus / VMI | Contrasted |
| Vaillant VMI 346/5-5 R4 | ecoBLOCK plus / VMI | Contrasted |
Can't see your model or have questions? The printed reference takes precedence. How to check it · Send us a photo via WhatsApp.
How to check if ref. 0020135165 is the part for your boiler
What determines it is not the boiler model, but the reference printed on the part you already have installed.
- Find the reference printed on the installed part and check whether it matches the catalogue reference 0020135165. If it is not visible, do not identify the part from its shape alone.
- Check the full boiler model on its data plate and look for it in the model associations on this page.
- Compare the connections and physical body with the original part before installation.
- If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.
Symptoms and faults that the PCB 0020135165 resolves.
The PCB controls the ignition, modulation, and safety features of the boiler. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The boiler turns on and off by itself after a few seconds.
Cause: A relay on the PCB does not keep the contact closed for the necessary time.
Listen for a repeated relay clicking sound when trying to turn it on before replacing the PCB.
- 02
There is no response when requesting heating or domestic hot water.
Cause: The PCB is not generating the ignition command to the burner.
Check that the demand is coming correctly from the thermostat or the sensor before considering the PCB as faulty.
- 03
There is a fixed fault code on the display that cannot be reset.
Cause: The electronics have detected a persistent fault and are keeping the lockout active.
Try a full reset by cutting the power for a few minutes and confirm if the fault code repeats before changing the PCB.
- 04
The pump stays on all the time or never stops.
Cause: The pump output relay is stuck or improperly controlled by the PCB.
Check if the pump is still running with the boiler completely turned off and without demand, before replacing the PCB.
Fault codes from Vaillant that this part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| F.63 | EEPROM 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.64 | Electronic 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.61 | Fault 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.62 | Delay 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.67 | Flame 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. |
These symptoms can have more than one cause. If your boiler displays a fault code, send it to us via WhatsApp along with a photo of the labeling, and we'll tell you if this is the part.
Data sheet for the Vaillant PCB 0020135165.
- Catalogue reference
- 0020135165
- Brand
- Vaillant
- Type of part
- PCBs (control boards)
- Units in stock
- 1 unit
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- Return
- 14 days
Data read on the part and in the manufacturer's documentation
What we have not been able to verify does not appear here.
- Relay code mounted on PCB
- GS130A0911
Frequently asked questions about the PCB 0020135165
For which models is the Vaillant Ecotec Plus VMW 346 5 5 PCB (control board) Ref. 0020135165 compatible?
What fault codes are compatible with this PCB?
Is the Vaillant Ecotec Plus VMW 346 5 5 PCB (control board) Ref. 0020135165 the same as the code GS130A0911?
Is this PCB suitable for the Vaillant VMW 236/5-3?
What is the reference for this PCB?
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