What does fault code A03 mean on Ferroli?

Overtemperature protection activation. If the circulator pump (ref. 39820902) is blocked/faulty or does not start, the water does not circulate and the primary overheats. Check order/voltage at terminals, ensure the rotor turns, and bleed the circuit.

What does the fault code F43 mean on Ferroli?

Activation of the heat exchanger protection. A null or very low circulation due to pump fault/blockage activates the heat exchanger protection. Check the power supply and rotation of the pump and ensure there is flow in the primary circuit.

RefurbishedFerroli Pumps

Ferroli Bluehelix Pro 32 C Circulating Pump Ref. 39820902

Name: Ferroli Bluehelix Pro 32 C Circulating Pump Ref. 39820902
Brand: Ferroli
SKU: MBPRO32C
Price: 55 EUR
Availability: InStock

55 €VAT includedIn stock · 1 unit

Circulating pump: refurbished spare part that circulates the water in the heating circuit. Useful if there is noise, the water does not circulate, or the radiators do not heat evenly. Reference 39820902. Includes a one-year warranty and delivery within 2–4 working days in the EU.

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Delivery in 2–4 working days

1-year warranty

14-day return

Technical support

Key Data

Reference: 39820902
Brand: Ferroli
Type of part: Pumps
Available units: 1 unit in stock
Status: Refurbished
Warranty: 1 year
Shipping: 2–4 working days (EU)
Return: 14 days

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.

Code	What does it mean?	Cause and diagnosis (this part)
A03	Overtemperature protection activation.	If the circulating pump (ref. 39820902) is blocked/faulty or does not start, the water does not circulate and the primary overheats. Check order/voltage at terminals, ensure the rotor turns, and bleed the circuit.
F43	Activation of the heat exchanger protection.	A null or very low circulation due to pump fault/blockage activates the heat exchanger protection. Check the power supply and rotation of the pump and ensure there is flow in the primary circuit.

Ferroli Bluehelix Pro 32 C Circulating Pump Ref. 39820902

Key Data

Spare Parts Related Boiler Bluehelix Pro 32 C