Vaillant PCB VM 240/3-5 - Ref. 0020092371
When you turn on the tap or activate the heating, the Vaillant VM 240/3-5 PCB - Ref. 0020092371 is responsible for controlling the ignition, the modulation of the burner, and the operation of the pump, ensuring that everything works properly. If this part fails, you may notice that the boiler does not start, gets locked, or exhibits erratic behavior. It is compatible with several models from the VM and VMW ranges, such as the 240/3-5, 242/4-5, and 280/3-5, among others. You should consider replacing it if you experience these symptoms, as its malfunction directly affects the performance of your boiler.
Compatible Vaillant boilers
PCB. 11 verified compatibilities: 240/3-5 and 242/4-5.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Vaillant 240/3-5 | VM | Contrasted |
| Vaillant 242/4-5 | VM | Contrasted |
| Vaillant 280/3-5 | VM | Contrasted |
| Vaillant 282/4-5 | VM | Contrasted |
| Vaillant 240/3-3 M | VMW | Contrasted |
| Vaillant 240/3-5 M | VMW | Contrasted |
| Vaillant 242/3-5 M | VMW | Contrasted |
| Vaillant 242/4-3 M R1 | VMW | Contrasted |
| Vaillant 242/4-5 M | VMW | Contrasted |
| Vaillant 280/3-5 | VMW | Contrasted |
| Vaillant 282/4-3 | VMW | 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 it 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 —. If it is not visible, do not identify the part by 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 (control board) 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 control or the thermostat requests heating, and the boiler does not start.
Cause: The PCB receives the command via the communication bus and decides to turn on the boiler.
Check the bus wiring and make sure the thermostat is properly configured and paired before replacing the PCB.
- 02
The fault comes and goes without a pattern: sometimes it works well and other times it stops by itself.
Cause: It could be a relay or a solder joint with intermittent contact inside the PCB.
With the boiler turned off, gently tap the PCB and observe if the behavior changes before replacing it.
- 03
The display shows a fault code that does not appear in the boiler manual.
Cause: It could be a memory or firmware fault of the PCB, causing incorrect readings.
Note the exact code and compare it with the manual before deciding to replace the PCB.
- 04
The boiler turns on and off after a few seconds, repeatedly.
Cause: If the PCB does not process the signals from the safety sensors correctly, it may cut the cycle short.
Check that the temperature and pressure sensors are not showing out-of-range values before replacing 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.
Vaillant PCB data sheet
- Brand
- Vaillant
- Type of part
- PCBs (control boards)
- Units in stock
- 0 units
- 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.
- voltage
- 230V
- frequency
- 50Hz
Frequently asked questions about the PCB (control board)
Is this Vaillant PCB suitable for the VMW 242/4-5 M?
Is the PCB for the VMW 242/4-3 M R1 the same as for the VMW 242/4-5 M?
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