Fime Extractor (SIT Group) For Sime Boiler - Ref. 6225634
The extractor evacuates the combustion gases and creates the necessary draft for the Sime boiler to start. When it fails, you will notice that the boiler does not ignite or gets locked due to a flue gas evacuation fault, and the flashing green LED may appear. This extractor is compatible with several models, including Metropolis H25 BF, Format Zip 25 BF, Murelle BF, and Open Zip 25 BF, among others. A technician must confirm through diagnosis whether it needs to be replaced when you experience ignition problems or lockouts in the boiler.
- Type of part
- Extractor fans
- Status
- Refurbished
- Catalogue reference
- 6225634
- Warranty
- 1 year
Sime boilers compatible with reference 6225634
Extractor with reference 6225634. Eight confirmed compatibilities: Metropolis H25 BF and Metropolis 25 BF.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Sime Metropolis H25 BF | Metropolis | Contrasted |
| Sime Metropolis 25 BF | Metropolis | Contrasted |
| Sime Format Zip 25 BF | Format Zip | Contrasted |
| Sime Format Zip 30 BF | Format Zip | Contrasted |
| Sime Format Zip 5-25 BF | Format Zip | Contrasted |
| Sime Murelle BF | Murelle | Contrasted |
| Sime Murelle EV 25 BF | Murelle | Contrasted |
| Sime Open Zip 25 BF | Open Zip | 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. 6225634 is the part for your boiler
The part reference, model, and equipment revision must be verified against the manufacturer's documentation.
- Find the reference printed on the installed part and check whether it matches the catalogue reference 6225634. If it is not visible, do not identify the part by 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 that require diagnosis in the extractor 6225634
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 locks out or shows a fault when trying to ignite.
Cause: The air pressure switch does not close the contact because the fan does not reach the necessary flow rate.
Check that the silicone tubes of the pressure switch are not blocked or disconnected before considering the fan as faulty.
- 02
The extractor does not start or makes a lot of noise when turning.
Cause: The bearing is worn out or the impeller is sooty and unbalanced.
With the boiler unplugged, check if the impeller turns freely by hand and if there is any soot buildup.
- 03
The flue gas extraction is failing and the boiler is unable to achieve the necessary forced draft.
Cause: The impeller or the flue outlet is obstructed, or the motor does not reach the required revolutions for forced draft.
Check that the flue and the impeller are free of soot and obstructions before replacing the extractor.
- 04
The boiler intermittently locks out, sometimes it works and sometimes it doesn't.
Cause: The extractor is losing draft irregularly, either due to a loose connection or because the motor is in poor condition.
Check the connector and wiring of the fan, and see if the rotation feels irregular to the touch.
Sime fault codes that require diagnosis
| Code | Fault | Technical checks |
|---|---|---|
| Flashing green LED | Fan or flue pressure switch fault (or flue thermostat intervention) in BF models. | If the fan does not start or rotates with insufficient rpm, the flue pressure switch does not close, and the PCB interprets a draught fault, causing the green LED to flash. Check the power supply to the fan, consumption, and that the pressure switch closes by applying a vacuum and checking continuity. |
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.
Sime 6225634 fan datasheet
- Catalogue reference
- 6225634
- Uniclima internal SKU
- EXTH25BF
- Brand
- Sime
- Type of part
- Extractor fans
- Units in stock
- 7 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- Return
- 14 days
Part data and available documentation
Contrast the label codes, PCB, and revision with the installed part; they are not necessarily equivalent references.
- voltage
- 220-240V
- frequency
- 50/60Hz
- IP rating
- IP44
- set temperature
- T300
- material
- Made in Italy
- Reference 6225634 has two previous Sime codes for the same part: 6225632 and 6225629. If your boiler has one of them, it is the same part.
Frequently asked questions about the extractor 6225634
Is this extractor Fime Ref. 6225634 compatible with my boiler Sime Metropolis H25 BF?
Which Sime boiler models are compatible with the extractor Ref. 6225634?
Does the extractor Fime Ref. 6225634 work for the Sime Format Zip 30 BF boiler?
What fault code can occur if there is a problem with this extractor?
If I have an extractor with reference 6225632, can I use Ref. 6225634?
Where can I find more information about the extractor EXTH25BF?
