Ferroli Bluehelix PRO 25 C Fan PCB Ref. 39846100

Ferroli boilers compatible with reference 39846100

Extractor with reference 39846100. Eight confirmed compatibilities: Bluehelix and Bluehelix Pro.

Proven compatibility

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. 39846100 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.

1. Find the reference printed on the installed part and check whether it matches the catalogue reference 39846100. If it is not visible, do not identify the part from its shape alone.
2. Check the full boiler model on its data plate and look for it in the model associations on this page.
3. Compare the connections and physical body with the original part before installation.
4. If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.

Symptoms and faults that the extractor 39846100 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 tries to ignite, you hear a clicking or buzzing sound, but the flame doesn't start.

  Cause: If the fan does not reach the necessary revolutions, the air pressure switch does not detect the correct draft and blocks the ignition.

  Manually turn the fan with the boiler turned off and unplugged: if it's difficult to turn or makes a scraping noise, the bearing is seized.

• 02

  The extractor is making a new noise, like a high-pitched hum or a metallic scraping.

  Cause: Bearing or motor shaft wear causes vibration and noise before the part completely fails.

  Listen to see if the noise increases when starting cold and decreases after a few minutes: it's a typical symptom of a dry bearing.

• 03

  The boiler stops and shows a ventilation or flue gas evacuation fault.

  Cause: The control unit monitors that the fan rotates at the correct speed and interrupts the cycle if it detects non-compliance, for safety reasons.

  Check that the flue is not blocked before replacing the fan.

• 04

  The fan takes longer than usual to start or stops for a few seconds before picking up speed.

  Cause: A motor with deteriorated winding or a seized shaft loses starting power, especially after months of disuse.

  Try spinning the fan blade by hand to see if it starts on its own after a push: this indicates that the motor is at its limit.

• 05

  The boiler has been off since the summer and now it won't start, or it starts and shuts down immediately.

  Cause: The accumulated dust and lack of use seize the shaft of the extractor, which is a mechanical part with bearings.

  Before replacing it, try spinning it manually and clean the accumulated dust on the casing: sometimes that's enough.

Fault codes for Ferroli that this part resolves.

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.

Ferroli 39846100 extractor datasheet

Catalogue reference

39846100

Brand

Ferroli

Type of part

Extractor fans

Units in stock

3 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.

voltage

400V

capacitor

33uF

insulation class

C4-49 UMKGB 3B

current

B?H 0.13 320