
Electronic Display Vaillant VMW 21/245 and Other Models, Ref. 0020056562
The Vaillant VMW 21/245 electronic display and other models is the control board that manages the ignition, burner modulation, pump, and safety features of the boiler. If it malfunctions, the boiler may not start, may lock out, or may operate erratically, potentially displaying the fault code F.70: Invalid product code (DSN). This part is compatible with boilers from the atmoTEC, aguaTEC, and ecoCOMPACT ranges, among others. It should be replaced when these symptoms or operational errors are detected.
VAT included
Consult via WhatsAppVaillant boilers compatible with reference 0020056562
PCB with reference 0020056562. 25 verified compatibilities: VC 126/3-5 (R3,5) and VC 196/3-5 (R3,5).
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Vaillant VC 126/3-5 (R3,5) | atmoTEC/turboTEC (VC - heating only) | Contrasted |
| Vaillant VC 196/3-5 (R3,5) | atmoTEC/turboTEC (VC - heating only) | Contrasted |
| Vaillant VC 246/3-5 (R3,5) | atmoTEC/turboTEC (VC - heating only) | Contrasted |
| Vaillant VC 306/3-5 (R3,5) | atmoTEC/turboTEC (VC - heating only) | Contrasted |
| Vaillant VC 194/4-5 | atmoTEC/turboTEC (VC - heating only) | Contrasted |
| Vaillant VC 95/4-5 (R1) | atmoTEC/turboTEC (VC - heating only) | Contrasted |
| Vaillant VC 195/4-5 (R1) | atmoTEC/turboTEC (VC - heating only) | Contrasted |
| Vaillant VC 245/4-5 (R1) | atmoTEC/turboTEC (VC - heating only) | Contrasted |
| Vaillant VCW 194/4-5 | atmoTEC/turboTEC (VCW - combi) | Contrasted |
| Vaillant VCW 196/3-5 (R3,5) | atmoTEC/turboTEC (VCW - combi) | Contrasted |
| Vaillant VCW 246/3-5 (R3,5) | atmoTEC/turboTEC (VCW - combi) | Contrasted |
| Vaillant VCW 244/4-5 | atmoTEC/turboTEC (VCW - combi) | Contrasted |
| Vaillant VCW 195/4-5 (R1) | atmoTEC/turboTEC (VCW - combi) | Contrasted |
| Vaillant VCW 245/4-5 (R1) | atmoTEC/turboTEC (VCW - combi) | Contrasted |
| Vaillant VCI 196/3-5 (R3,5) | aguaTEC (VCI) | Contrasted |
| Vaillant VCI 246/3-5 (R3,5) | aguaTEC (VCI) | Contrasted |
| Vaillant VSC 126/3-5 (R1,R2,R3) | ecoCOMPACT/auroCOMPACT (VSC) | Contrasted |
| Vaillant VSC 196/3-5 (R1,R2,R3) | ecoCOMPACT/auroCOMPACT (VSC) | Contrasted |
| Vaillant VSC 246/3-5 (R1,R2,R3) | ecoCOMPACT/auroCOMPACT (VSC) | Contrasted |
| Vaillant VSC 126/2-C | ecoCOMPACT/auroCOMPACT (VSC) | Contrasted |
| Vaillant VSC 196/2-C | ecoCOMPACT/auroCOMPACT (VSC) | Contrasted |
| Vaillant VSC 246/2-C | ecoCOMPACT/auroCOMPACT (VSC) | Contrasted |
| Vaillant VSC S 126/3-5 | ecoCOMPACT/auroCOMPACT (VSC) | Contrasted |
| Vaillant VSC S 196/3-5 | ecoCOMPACT/auroCOMPACT (VSC) | Contrasted |
| Vaillant VSC S 126/2-C | ecoCOMPACT/auroCOMPACT (VSC) | 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 the reference 0020056562 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 0020056562. 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 0020056562 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 does not turn on and nothing is visible on the front of the boiler.
Cause: The electronic display is not receiving power or its internal circuit has failed, even though the boiler continues to operate.
Check that the boiler is powered and that the main fuse is not blown before declaring the display faulty.
- 02
The buttons or the remote control do not respond even though the boiler is on.
Cause: The keyboard is integrated into the display module, so if its circuit fails, the key presses do not reach the boiler.
Turn off and then turn on the boiler from the main switch to rule out a temporary hang-up before replacing the part.
- 03
The fault codes do not appear on the display when the boiler is locked.
Cause: The display translates the boiler's internal code into the number or letter that is visible; if it fails, the warning does not appear even though the fault exists.
If there is any LED flashing or a sequence of beeps, note the pattern: it may provide guidance on the actual fault before replacing the PCB.
- 04
The screen is visible, but with incomplete symbols, flickering or partially lit.
Cause: A loose connection in the flat connector that links the display to the PCB can cause intermittent faults of this type.
Open the boiler and check that the flat cable or the connector of the display are properly connected before replacing the module.
Fault codes from Vaillant that this part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| F.70 | Invalid product code (DSN): there is no valid appliance variant for the display and/or the electronics. | Incorrect replacement or pairing of the display (0020056562) with the PCB causes loss/misalignment of the DSN; after mounting display+PCB simultaneously, the unit enters F.70. Verify by accessing d.93 to adjust the device identification and check the display↔PCB harness/connector. |
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 0020056562 PCB.
- Catalogue reference
- 0020056562
- 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 on the label of the PCB
- 0020045417
- Boiler model according to external sources (not resolved)
- Vaillant Ecotec Plus 824/831/837, kit 0020056561 — does not match the compatibility with Turbotec Plus/VMW indicated.
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Vaillant VCW 244/4-5 Manual (PDF)Document © Vaillant, provided as a technical reference.












