Saunier Duval Isofast F 30 EA Extractor Fan Ref. S1072500
The Saunier Duval Isofast F 30 EA extractor fan Ref. S1072500 is a flue gas extractor responsible for evacuating combustion gases and generating the necessary draft for the boiler to start. When this part fails, the boiler may not ignite or may lock out due to a problem with flue gas evacuation. Fault codes F2, 02, or 10 may appear, indicating issues with air flow or faults in the fan. This model is compatible with boilers from the Themafast, Isofast, Isotwin, and Themaclassic ranges, among others. It is recommended to replace the fan when it shows operational faults or when a recurring lockout is detected.
VAT included
Consult via WhatsAppSaunier Duval boilers compatible with reference S1072500
Extractor with reference S1072500. Six confirmed compatibilities: Themafast F 30 E and Themafast F 30 E H-MOD.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval Themafast F 30 E | Themafast | Contrasted |
| Saunier Duval Themafast F 30 E H-MOD | Themafast | Contrasted |
| Saunier Duval Isofast F 30 E H-MOD | Isofast | Contrasted |
| Saunier Duval Isofast F 35 E H-MOD | Isofast | Contrasted |
| Saunier Duval Isotwin F 30 H-MOD | Isotwin | Contrasted |
| Saunier Duval Themaclassic F AS 30 E | Themaclassic | 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. S1072500 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 S1072500. 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 extractor S1072500 resolves.
The extractor evacuates the combustion gases with forced draft. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The boiler ignites, makes an attempt, and shuts off after a few seconds.
Cause: The extractor does not close the air pressure switch circuit in time, and the boiler cuts off the gas for safety.
Check that the silicone tubes of the pressure switch are not disconnected, bent, or with condensed water before replacing the fan.
- 02
The boiler intermittently locks out: sometimes it ignites and other times it doesn't.
Cause: The fan starts irregularly, usually due to a bearing that begins to seize with use.
Check if the fault occurs more when the boiler is cold or already hot: it helps to distinguish a failing fan from a pressure switch problem.
- 03
The fan vibrates or makes more noise than usual, especially when starting cold.
Cause: Bearing wear increases friction right at startup, when the motor requires more torque.
Try turning the impeller by hand with the boiler off: if you feel resistance or play, the wear is already mechanical.
- 04
The boiler is working but provides less heat than expected or takes a long time to heat the water.
Cause: The fan rotates but without the necessary power to achieve complete and efficient combustion.
Before changing it, check that the flue outlet to the outside is completely clear.
Fault codes from Saunier Duval that this spare part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| F2 | Air deficiency safety (airflow/air intake fault). | The faulty, blocked, or unpowered extractor (fan) does not generate the necessary depression, the pressure switch does not switch, and the boiler enters F2; check voltage to the motor, free rotation/noise, and switching of the air pressure switch. |
| 02 | Airflow safety (extraction/aspiration fault) in ISOFAST ranges F. | Extractor fault prevents correct airflow/smoke flow and activates safety 02; check power supply to the fan, ensure it rotates without friction, check the condition of pressure tubes and pressure switch, and ensure the duct is not obstructed. |
| 10 | Fan fault in ISOFAST ranges F. | Fault in the extractor (motor/wiring/tachometer) detected by the electronics; check power supply and signal return, motor continuity, and ensure the fan is not blocked. |
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.
Saunier Duval S1072500 fan datasheet
- Catalogue reference
- S1072500
- Brand
- Saunier Duval
- Type of part
- Extractors
- Units in stock
- 5 units
- 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.
- Certification
- CE marking (visible on the motor label)
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Saunier Duval Themaclassic F AS 30 E Manual (PDF)Document © Saunier Duval, provided as a technical reference.
Frequently asked questions about the extractor S1072500
Is the Saunier Duval extractor Ref. S1072500 suitable for an Isofast F 30 E H-MOD?
When should the Saunier Duval extractor Ref. S1072500 be replaced on the Themaclassic F 30 E?
Spare parts related to Saunier Duval Themafast
