Saunier Duval ThemaClassic Electronic Display Ref. S1009000
If your boiler does not start, locks out, or exhibits erratic behavior, you may need the Saunier Duval ThemaClassic Electronic Control Board Ref. S1009000. This PCB is responsible for controlling the ignition, burner modulation, pump, and safety features of the boiler. When it fails, fault codes 12, 18, or 20 may appear, indicating issues with the user interface. It is compatible with several models from the ThemaClassic, Thema, and Isotwin ranges, such as the F 24 E and C 24 E, among others. It is recommended to replace it when you experience these symptoms or errors in operation.
VAT included
Consult via WhatsAppSaunier Duval boilers compatible with reference S1009000
PCB with reference S1009000. Seven confirmed compatibilities: F 24 E and C 24 E.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval F 24 E | ThemaClassic | Contrasted |
| Saunier Duval C 24 E | ThemaClassic | Contrasted |
| Saunier Duval F 24 E | Thema | Contrasted |
| Saunier Duval C 24 E | Thema | Contrasted |
| Saunier Duval F 24 E | Isotwin | Contrasted |
| Saunier Duval C 24 E | Isotwin | Contrasted |
| Saunier Duval C 24 EV | Isotwin | 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. S1009000 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 S1009000. 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 S1009000 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 the control panel is off.
Cause: If this PCB fails, both the display and the controls turn off.
Check if the boiler is receiving power and verify that the main fuse is not blown before replacing the PCB.
- 02
The control panel does not respond to the buttons even though the screen is on.
Cause: A fault in the keyboard circuit can block key presses without turning off the display.
Test each button several times and calmly: sometimes a dirty contact simulates a total fault of the PCB.
- 03
The boiler does not respond when changing the temperature or seems to turn on by itself.
Cause: A fault in the circuit of this PCB can disrupt the ignition commands.
Note if the behavior changes when moving the temperature selector: this helps to distinguish a fault in the PCB from a faulty sensor.
- 04
The screen displays a fixed fault code that does not disappear even after resetting.
Cause: If the circuit that generates the warning is damaged, it continues to display the last fault code even though the original cause no longer exists.
Turn off the boiler with the main switch, wait a minute, and turn it back on before considering the fault code as valid.
Fault codes from Saunier Duval that this spare part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| 12 | User interface or remote control faulty. | The display/interface module S1009000 fails (e.g., moisture or damaged electronics) and the boiler detects an interface fault; communication with the main PCB may also be affected. Check connections between the main PCB and the interface board, dry if there is moisture, and if the issue persists, replace the display. |
| 18 | User interface fault. | Inherent defect of the display board S1009000 (interface), identified by the electronics as an interface fault. Check wiring/connections and, if not resolved, replace the display module. |
| 20 | User interface not compatible with the boiler. | A display/interface S1009000 has been installed with a revision/code not compatible with the unit or has not been reconfigured after the change, causing the boiler to detect incompatibility. Check 'interface revision code'/'boiler code' in the data menu and install the correct version or reconfigure. |
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 S1009000 PCB.
- Catalogue reference
- S1009000
- Brand
- Saunier Duval
- Type of part
- PCBs (control boards)
- Units in stock
- 4 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- Return
- 14 days
Frequently asked questions about the PCB S1009000
Does this PCB work for my Saunier Duval ThemaClassic F 24 E?
When should this display PCB of the Isotwin C 24 E be replaced?
Is the PCB the same for the Isotwin C 24 E and the Isotwin F 24 E?
Spare parts related to Saunier Duval Isotwin
