PCB Saunier Duval Thema NOx/Micraplus NOx V-Group Ref. 0020146496
Control PCB for Saunier Duval boilers from the Thema/Micraplus Nox range. The label identifies the manufacturer as V-Group, with a manufacturing code of 0020146496 and batch 2194 0067 G. It operates with a power supply of 230V and delivers an output of 24V. It is replaced when the original board fails and stops controlling the boiler.
VAT included
Consult via WhatsAppSaunier Duval boilers compatible with reference 0020184123
PCB with reference 0020184123. Six confirmed compatibilities: F 25 B and F 25 B/2.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval F 25 B | NOX Thema | Contrasted |
| Saunier Duval F 25 B/2 | NOX Thema | Contrasted |
| Saunier Duval F 25 B GN/BP | NOX Thema | Contrasted |
| Saunier Duval F 25 A LPG/GN | Themafast NOX | Contrasted |
| Saunier Duval F 30 NL/LL | Themafast NOX | Contrasted |
| Saunier Duval 24 B2 | Micraplus NOX | 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. 0020184123 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 0020184123. 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 0020184123 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 and shows no attempt to start.
Cause: The PCB does not complete the startup because its control stage has failed.
Check that the 230V input reaches the PCB before replacing it.
- 02
The sensors and controls stop working, as if they are not receiving control power.
Cause: The PCB converts the 230V input into 24V to power sensors and controls, and if it fails, both are lost.
Measure with the multimeter if there is 24V at the output of the PCB before declaring the fault as certain.
- 03
The boiler locks out without any other component (gas, flame, pressure) justifying it.
Cause: A fault in the control electronics causes the system to lock even though the rest of the installation is in good condition.
First, rule out the pressure switch, the NTC sensor, and the flame detector: if all measurements are correct, the problem points to the PCB.
Fault codes from Saunier Duval that this spare part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| F63 | Main PCB fault | The EEPROM/electronics of the main board is damaged or corrupted, causing the equipment to lock. Check the board voltages, connections, and if the issue persists, replace/reprogram the PCB 0020184123. |
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 Saunier Duval PCB 0020184123
- Catalogue reference
- 0020184123
- Brand
- Saunier Duval
- Type of part
- PCBs (control boards)
- Units in stock
- 5 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.
- Supply voltage
- 230V
- Low voltage output
- 24V
- Label code
- 0020146496
- Batch / manufacturing date
- 2194 0067 G
- Manufacturer of the PCB (screen printed)
- V-Group
- PCB model (silkscreened)
- PM-02
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Saunier Duval F 25 B/2 Manual (PDF)Document © Saunier Duval, provided as a technical reference.
Frequently asked questions about the PCB 0020184123
Is this V-Group PCB original from Saunier Duval?
What is the operating voltage of the PCB of the Themafast Nox F30?
When should this PCB be replaced in a Nox F25-A LPG?
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