Saunier Duval Isofast Condens F35E Electronic Display PCB Ref. S1072300
The Saunier Duval Isofast Condens F35E Electronic Control Board is a fundamental component in the boiler that controls the ignition, burner modulation, pump, and safety features. If this part fails, the boiler may not start, become locked, or operate erratically, displaying fault codes such as F12, F18, or F13. It is compatible with several models, including the Isofast Condens F30E and F35E, as well as those from the Isofast and Isomax ranges. It is recommended to replace it when symptoms of malfunction or errors on the display occur.
Saunier Duval boilers compatible with reference S1072300
PCB with reference S1072300. Seven confirmed compatibilities: F 30 E and F 35 E.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval F 30 E | Isofast Condens | Contrasted |
| Saunier Duval F 35 E | Isofast Condens | Contrasted |
| Saunier Duval F 30 E H-MOD | Isofast | Contrasted |
| Saunier Duval F 35 E H-MOD | Isofast | Contrasted |
| Saunier Duval F 35 EA | Isofast | Contrasted |
| Saunier Duval F 35 E | Isomax | Contrasted |
| Saunier Duval Condens F 35 E | Isomax | 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. S1072300 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 S1072300. 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 S1072300 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, although it is noticeable that the boiler has power.
Cause: The PCB manages the display; if it fails, the boiler may continue to operate but without showing anything.
Check the connector or cable that connects this PCB with the power board; a loose one gives the same symptom.
- 02
The buttons on the panel do not respond or need to be pressed several times to work.
Cause: The keyboard and the reading of keystrokes depend on this PCB; if it degrades, it loses sensitivity.
Clean the button contacts with a dry cloth and try again before replacing the entire PCB.
- 03
The display shows a fixed fault code that does not disappear even after resetting the boiler.
Cause: A fault in the circuit of this PCB can become locked, displaying a fault code even though the actual cause is no longer present.
Note the exact code and cut the power 2-3 minutes before discarding this PCB; some lockouts require a longer power cut to reset.
- 04
The screen flickers, turns off, and turns back on by itself intermittently.
Cause: A fault in the internal power supply of this PCB causes micro-cuts in the display.
Check that the connection of this PCB with the rest of the boiler is properly fitted and without play before replacing it.
Fault codes from Saunier Duval that this spare part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| F12 | No signal from the user interface | Yes — it points to this display/interface module or its connection cable with the main PCB. |
| F18 | User interface fault | Yes — it corresponds to this display/control board module. |
| F13 | Main PCB fault | No — that code is for the MAIN PCB (a different part), not for this 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 S1072300 PCB.
- Catalogue reference
- S1072300
- Brand
- Saunier Duval
- Type of part
- PCBs (control boards)
- Units in stock
- 0 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- Return
- 14 days
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Saunier Duval F 35 E H-MOD Manual (PDF)Document © Saunier Duval, provided as a technical reference.
Frequently asked questions about the PCB S1072300
Is this control board Ref. S1072300 compatible with my Saunier Duval Isofast Condens F35E boiler?
What other models are compatible with the display PCB S1072300?
What fault codes are documented for this PCB?
Where can I find more information about the reference of this PCB?
How many models in total are compatible with this PCB?
Spare parts related to Saunier Duval Isofast
