Vaillant Ecotec Plus VMW ES 306/5-5 PCB Ref. 0020116985
The control PCB governs the ignition, burner modulation, pump, and safety features of the boiler. This Vaillant part, with reference 0020116985, is vital for the operation of models such as the ecoTEC Plus VMW 306/5-5, among others. If it fails, you will notice that the boiler does not start, locks out, or exhibits erratic behavior. It is compatible with several boilers from the ecoTEC plus and ecoTEC pro ranges. It is recommended to replace it when errors such as F.61, F.62, F.63, F.64, or F.67 appear.
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 screen is off and the boiler does not respond to any button.
Cause: The PCB is not receiving power, so no component of the boiler can start.
Check the fuse on the PCB and the input voltage before replacing it.
- 02
A fault code appears on the screen and does not disappear even after you reset the boiler.
Cause: The control electronics maintain the lock because they detect that the problem is still present.
Try restarting from the panel a couple of times and note if the fault code changes or repeats.
- 03
The remote control or the modulating thermostat stops communicating with the boiler.
Cause: The communication module on the PCB has stopped managing the bus signal.
Check that the bus cable (eBus) is not loose or connected the wrong way before replacing the PCB.
- 04
Every time there is a power outage, the boiler loses the saved configuration.
Cause: The memory of the PCB does not retain the parameters if its internal backup fails.
Check if the problem occurs always with supply cuts or also without them.
- 05
There is a burnt smell or darkened areas can be seen on the PCB.
Cause: A short circuit may have damaged traces or components of the electronics.
Visually inspect both sides of the PCB before discarding it.
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
- 1-2 business days
- 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.
- Code printed on physical label
- 0020116985
- Brand printed on the PCB
- Vaillant Group
Frequently asked questions about the PCB 0020135165
Why does the label on my Vaillant PCB say 0020116985 while the datasheet indicates 0020135165?
Is it an original Vaillant PCB for the Ecotec Plus VMW ES 306/5-5?
Does this PCB work for a Vaillant VM 246/5-5?
What is the difference between this PCB and those of other Vaillant Ecotec Plus models?
How many models are compatible with the Vaillant Ecotec Plus VMW ES 306/5-5 PCB?
What fault codes are documented for this PCB?
Spare parts related to Vaillant ecoTEC plus
