Saunier Duval Themafast Condens / Themaplus Condens Electronic Display Ref. 0020172430
The control PCB manages 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. Users may notice issues such as fault code F.70, which indicates an invalid product code, or F.707, which signals the inability to establish communication between the display and the circuit board. This component is compatible with Saunier Duval Themafast Condens and Themaplus Condens boilers, among others. It is recommended to replace it upon detecting faults in its operation.
VAT included
Consult via WhatsAppSaunier Duval boilers compatible with reference 0020018473
PCB with reference 0020018473. Four confirmed compatibilities: F30 and F30 E.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval F30 | Themafast Condens | Contrasted |
| Saunier Duval F30 E | Themafast Condens | Contrasted |
| Saunier Duval F30 | Thema Plus Condens / Themacondens | Contrasted |
| Saunier Duval F30 E | Thema Plus Condens / Themacondens | 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. 0020018473 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 0020018473. 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 0020018473 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 turns off by itself after a period of operation, especially when the boiler has been on for a long time.
Cause: This is usually due to a poor internal contact of the display that worsens with heat, as the casing or connector expands.
Check if the fault occurs consistently after a few minutes of use and if the display starts working again when the boiler cools down; if so, first check the connector.
- 02
The screen is completely blank, with no digits or icons, although the boiler is still making noise.
Cause: The display module can fail on its own, even if the main PCB functions correctly.
Check if the boiler is still providing heating or hot water; if it responds to the last programming, the problem is with the display, not with the boiler.
- 03
When pressing the buttons, the screen reacts slowly or only sometimes.
Cause: A damaged contact between the keyboard and the screen circuit causes intermittent responses.
Try pressing the same button several times in a row; if it sometimes works and sometimes doesn't, it is a typical symptom of this part and not of the main PCB.
- 04
Numbers, icons, or segments are missing on the screen, or there are stains where there used to be text.
Cause: The screen matrix degrades in parts, which is common in the display glass.
Note which specific symbols are missing; if the fault worsens over time, it is usually the display and it is advisable to replace it.
Fault codes from Saunier Duval that this spare part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| F.70 | Invalid product code (DSN) / appliance coding defect. | This occurs when both the display (user interface) and the main PCB are replaced simultaneously and the appliance reference is not reprogrammed. Check by entering the service menu (e.g., d.93) and adjusting the product code according to the data plate. |
| F.18 | User interface fault (display). | The display electronics are faulty and do not communicate or respond correctly. Check the power supply and bus to the interface, and if possible, test with a known good replacement display. |
| F.363 | Display EEPROM: read/write test error. | The internal memory of the display detects corruption or a fault in its R/W test. Check if the error appears after update/start-up and replace the display if it persists. |
| F.707 | It is not possible to establish communication between the display and the PCB. | eBUS communication fault between the display and the main PCB due to defective display/cable/connectors. Check continuity of the harness between the screen and PCB, polarity, and condition of connectors; test with another cable or display. |
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 0020018473
- Catalogue reference
- 0020018473
- Brand
- Saunier Duval
- 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.
- PCB code printed on the part
- 0020172430
- Additional code on label
- 901605
- Additional code on label
- 453216
- Additional code on label
- 007815T8
- Additional code on label
- 246.05.03
- Additional code on label
- 7158223
- Date code on label
- 16-05
- Additional code on label
- T018
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Saunier Duval Thema Plus Condens / Themacondens F30 Manual (PDF)Document © Saunier Duval, provided as a technical reference.
Frequently asked questions about the PCB 0020018473
Why does the code displayed on this screen not match the reference 0020018473 that appeared earlier on the website?
Is this screen compatible with my Saunier Duval Thema Plus Condens F30 E?
Is there a commercial equivalent reference for this display, with code 0020172430?
Does this display work for the Themafast Condens range?
How many models are compatible with this electronic PCB?
What fault codes are documented for this display?
Spare parts related to Saunier Duval Themafast Condens
