Vaillant PCB VMW 346 5 5 R3 Ref. 0020135165
The Vaillant PCB VMW 346 5 5 R3 Ref. 0020135165 is a component that controls the ignition, burner modulation, pump, and safety features of the boiler. When it fails, the boiler may not start, become locked, or exhibit erratic behavior. The user may notice issues such as the inability to ignite the boiler or improper operation of the gas valve, manifesting with fault codes such as F.61, F.62, F.63, F.64, or F.67. This board is compatible with models such as VM 246/5-5, VM 306/5-5, and VMI 346/5-5 R4, among others. It should be replaced when the mentioned symptoms occur or when faults in the electronics are detected.
Vaillant 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 does not ignite: there are no lights, display, or noise from the fan when trying to turn it on.
Cause: The PCB is not supplying power to the internal circuits due to a fault in its power supply.
Measure with a multimeter if 230V is reaching the input terminals of the PCB before considering it faulty.
- 02
An error code appears on the screen that does not go away when turning the boiler off and on.
Cause: The control electronics detect an internal fault and keep it locked until the PCB is repaired or replaced.
Note the exact code and consult it in the manual: some codes indicate problems with external sensors, not with the PCB.
- 03
The buttons on the panel are not working, although the boiler seems to be receiving power.
Cause: The microcontroller on the PCB has stopped managing the user interface.
Disconnect the boiler from the power supply for 2-3 minutes and then restore power: if it still does not respond, it is not a temporary fault.
- 04
The boiler turns off by itself during operation and sometimes restarts without intervention.
Cause: An intermittent fault in the PCB causes random starts or lockouts.
Check that the connectors on the PCB are not loose or oxidized; a poor connection can cause the same symptoms.
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
Frequently asked questions about the PCB 0020135165
Is this PCB Ref. 0020135165 suitable for my Vaillant VU 246/5-5?
Is this PCB suitable for a Vaillant VMW 236/5-3, even though the rest of the models are from the 5-5 series?
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