
Saunier Duval Thelia F 23 E Extractor Ref. 05705900
The Saunier Duval Thelia F 23 E extractor is a flue fan responsible for expelling combustion gases and facilitating the boiler's startup. When this part fails, it is possible that the boiler will not ignite or will lock out due to a problem with the flue gas evacuation. It is installed in boilers from the Combitek, Thema, and Thelia ranges, among others. It is advisable to replace the extractor when these symptoms occur to ensure the proper functioning of the boiler.
VAT included
Consult via WhatsAppSaunier Duval boilers compatible with reference 05705900
Extractor with reference 05705900. Three confirmed compatibilities: Combitek F 23 E and Thema F 23 E.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval Combitek F 23 E | Combitek | Contrasted |
| Saunier Duval Thema F 23 E | Thema | Contrasted |
| Saunier Duval Thelia 23 E | Thelia | 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 05705900 is the right 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 05705900. 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 05705900 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 does not ignite or locks out just when the fan should start.
Cause: The extractor needs to reach its rotational speed before the control unit allows the gas to flow.
Before changing it, check if the fan is spinning very slowly or if it is not moving at all; these are different issues and affect the diagnosis.
- 02
The extractor makes noise or vibrates noticeably while operating.
Cause: The wear of the shaft or bearings over time causes that characteristic noise.
Gently touch the casing of the running extractor to feel if the vibration is uniform or has peaks; peaks usually indicate an unbalanced blade.
- 03
The boiler shuts down by itself a few seconds after trying to ignite.
Cause: If the extractor does not maintain a stable rotation, the PCB detects the anomaly and cuts off the gas supply for safety.
Check that the flue pipe is not obstructed or sagging before considering the part as faulty.
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 05705900 extractor.
- Catalogue reference
- 05705900
- Brand
- Saunier Duval
- Type of part
- Extractor fans
- Units in stock
- 4 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.
- Engine model (MOD.)
- GR00845
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Saunier Duval Thema F 23 E Manual (PDF)Document © Saunier Duval, provided as a technical reference.












