Isofast Condens F30E Boiler Display Ref. S1072300
Isofast Condens presents the Isofast Condens F30E boiler display Ref. S1072300, a control PCB that manages the ignition, burner modulation, pump, and safety features of the boiler. When this part fails, the boiler may not start, lock out, or behave erratically, displaying faults such as F12, F18, or F13. It is compatible with several models from the Isofast Condens range, such as the F 30 E and the F 35 E, as well as with other models from the Isofast and Isomax ranges. It is recommended to replace it when these fault symptoms occur.
VAT included
Consult via WhatsAppSaunier 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 boiler display is completely off even though the unit has power.
Cause: The display is not receiving power or has lost connection with the PCB that controls it.
Check that the boiler has power and that the circuit breaker or fuse has not tripped before declaring the display faulty.
- 02
On the screen, only lines, loose segments, or incomplete numbers are visible.
Cause: The display segments fail due to wear or a poor connection with the PCB that sends the information.
Note which segments are missing and in what order they appear: if it's always the same pattern, it helps confirm that it's the display.
- 03
The buttons or the control knob are not responding even though the boiler is working internally.
Cause: If the display also integrates the controls, a fault in the screen can leave the control unresponsive.
Force a reset by turning the boiler off and on, and check if the buttons respond for a moment before failing again.
- 04
The screen flickers or turns on and off intermittently.
Cause: A poor connection between the display and the PCB causes intermittent signal interruptions.
Visually inspect the flat connector between the screen and the PCB to see if it is loose or bent before replacing the part.
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
- 1 unit
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- 1-2 business days
- Return
- 14 days
Frequently asked questions about the PCB S1072300
What fault indicates that this display of the Isofast Condens F35E needs to be replaced?
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