Wilo NFHUL15 4 Circulating Pump Motor Ref. 4507866
RefurbishedWiloPumps

Wilo NFHUL15 4 Circulating Pump Motor Ref. 4507866

85 €VAT includedIn stock · 1 unit

Circulating pump: refurbished spare part that circulates water in the heating circuit. Useful if there is noise, water is not circulating, or radiators do not heat evenly. Compatible with C24, F24, F32 (ref. 4507866). Includes a one-year warranty and delivery within 2–4 working days in the EU.

1
Consult via WhatsApp
Delivery in 2–4 working days
1-year warranty
14-day return
Technical support

Key Data

Reference
4507866
Brand
Wilo
Type of part
Pumps
Available units
1 unit in stock
Status
Refurbished
Warranty
1 year
Shipping
2–4 working days (EU)
Return
14 days

The same part (ref. 4507866) equips these models. Verified compatibility; check the reference before purchasing.

Ferroli Domiproject

  • C24
  • F24
  • F32

Ferroli Divatech

  • C24 D
  • F24 D
  • F32 D

Ferroli Domicompact

  • C24
  • F24
  • C30
  • F30

Ferroli FerEasy

  • C24
  • F24

Fault codes related to this part (not the entire boiler). They usually have more possible causes: first rule out electrodes, wiring/connections, and gas supply. Verified with ≥3 sources.

CodeWhat does it mean?Cause and diagnosis (this part)
A03Overtemperature protection activation.A lack of circulation due to a fault/blockage in the Wilo NFHUL15-4 circulator pump (ref. 4507866) causes the flow sensor to trigger the protection; verify that the pump receives 230 V, rotates freely (shaft unlocking), bleed air, and confirm flow/ΔT.
F43Activation of the heat exchanger protection.The heat exchanger reaches the temperature limit due to lack of circulation when the Wilo NFHUL15-4 pump is blocked/faulty; check that the pump is rotating (consumption/noise/hot return), has power supply, and that the circuit is bled.
How do I know if this circulating pump is the one for my boiler?
Verify the reference 4507866 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part. It is a Wilo piece.
What is it used for?
The circulating pump circulates the water through the heating circuit.
Noise, water not circulating, or cold radiators?
Typical symptoms: humming, seized rotor after a long stop, or radiators that do not heat evenly.
Which models is it suitable for?
Part shared by various models (see Compatibility). If your model does not appear, send us a photo of the marking and we will confirm it.
Installation and recommendations
Bleed the air from the circuit and the pump; check the pressure at 1–1.5 bar with the boiler cold.
What does refurbished mean and what coverage does it have?
Part removed from a boiler out of service, inspected and tested. Includes 1-year warranty and 14-day return policy. Delivery within 2–4 working days in the EU.
Scroll to the top