Saunier Duval Opaliafast F 17 E Control PCB Ref. S1208500
When you turn on the hot water tap, the PCB (control board) Saunier Duval Opaliafast F 17 E is responsible for managing the ignition, the modulation of the burner, the pump, and the safety features of the boiler. If it fails, you will notice that the boiler does not start, gets locked, or operates erratically. This board is compatible with models such as Opalia F 11 E, Opalia F 14 E, Opalia C 16 E, among others. It is recommended to replace it in case errors such as F11, F12, F13, or F20 appear, which indicate communication problems or faults in the board.
VAT included
Consult via WhatsAppSaunier Duval boilers compatible with reference S1208500
PCB with reference S1208500. Eight confirmed compatibilities: Opalia F 11 E and Opalia F 14 E.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval Opalia F 11 E | Opalia | Contrasted |
| Saunier Duval Opalia F 14 E | Opalia | Contrasted |
| Saunier Duval Opalia F 17 E | Opalia | Contrasted |
| Saunier Duval Opalia C 16 E | Opalia | Contrasted |
| Saunier Duval Opaliafast C 16 E | Opaliafast | Contrasted |
| Saunier Duval Opaliafast F 17 E | Opaliafast | Contrasted |
| Saunier Duval Opaliatherm TF 11 | Opaliatherm | Contrasted |
| Saunier Duval Opaliatherm TF 14 | Opaliatherm | 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 part number S1208500 is the correct one 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 S1208500. 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 S1208500 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: neither the display nor the indicators are working.
Cause: The PCB is not receiving or distributing electrical power correctly.
Check the accessible fuse and verify that the plug or the incoming wiring does not have a loose connection.
- 02
An error code appears on the screen and the boiler does not start.
Cause: The PCB detects an abnormal condition (temperature, flame, or pressure) and shuts off the ignition for safety.
Note the exact code: in these boilers, many faults are due to the NTC sensor or water pressure, check those points before replacing the PCB.
- 03
The buttons or the temperature selector do not work, even though the display is on.
Cause: The microcontroller on the PCB does not correctly read the inputs from the control panel.
Turn off and on the boiler from the main switch, not just the control, to rule out a temporary hang-up.
- 04
The pilot light or the segments of the display are flashing strangely, without a known fault code.
Cause: The PCB loses part of its configuration or the display stage fails.
Check if the fault disappears after a complete power cut of a couple of minutes; if it returns immediately, it points towards the PCB.
Fault codes from Saunier Duval that this spare part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| F11 | Communication error between the main PCB and the user interface. | The PCB S1208500 manages the data bus with the interface; a fault in the electronics/power supply of the board or in its soldering can interrupt reception/transmission. Check the harness and PCB–display connectors and measure 5 V/eBUS on the board; if everything is correct, cross-check with interface/test board. |
| F12 | Communication error between the user interface and the main PCB. | The S1208500 PCB may lose communication due to an internal fault (source/bus/micro) or loss of power to the interface. Check the interface-PCB wiring and voltages (5 V/eBUS) on the board; if OK, replace the PCB or the interface to rule out. |
| F13 | Main PCB fault. | Inherent fault of the PCB S1208500 (EEPROM/CPU/power supply or tracks), which locks the equipment. Check the voltages on the board, inspect the solder joints, and confirm by replacing with a new S1208500 if necessary. |
| F20 | User interface incompatible with the main PCB. | After changing the control board/interface without the correct coding, the PCB S1208500 detects incompatibility and locks. Verify compatibility of versions and product coding; reparameterize or replace the corresponding control board/interface. |
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 S1208500 PCB.
- Catalogue reference
- S1208500
- Brand
- Saunier Duval
- Type of part
- PCBs (control boards)
- Units in stock
- 2 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- 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
- 0020012181/02
- EEPROM chip code
- 0020012156 IRIS_W35 874A 09.01.06
- PCB version
- IRIS1.0 735004 V087_C
- Batch
- 6034 0167 B
- Welding face marking
- IRIS1.0 120643-4 T253 F6
- Additional marking (reserved area)
- 39-05
Frequently asked questions about the PCB S1208500
Does this PCB S1208500 work for my Saunier Duval Opaliafast F 17 E?
How do I check if this PCB Ref. S1208500 is the one for my boiler?
What markings does the PCB of the Opaliatherm TF11 have?
Does this Ref. S1208500 also work for the Opalia C 16 E?
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