Air Pressure Switch Ariston Genus 27 Bffi Honeywell Ref. 571652
RefurbishedAristonPressure switches

Air Pressure Switch Ariston Genus 27 Bffi Honeywell Ref. 571652

25 €VAT includedIn stock · 5 units

Pressure switch: refurbished spare part that controls air or water pressure to authorize operation. Useful if the boiler does not start or shows a draft error. Compatible with Genus 27 BFFI, Genus 27 MFFI, Genus 27 RFFI System (ref. 571652). 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
571652
Brand
Ariston
Type of part
Pressure switches
Available units
5 units in stock
Status
Refurbished
Warranty
1 year
Shipping
2–4 working days (EU)
Return
14 days

The same part (ref. 571652) equips these models. Verified compatibility; check the reference before purchasing.

Genus

  • Genus 27 BFFI
  • Genus 27 MFFI
  • Genus 27 RFFI System
  • Genus 30 MFFI

EuroCombi

  • EuroCombi A27 MFFI

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)
BAir pressure switch stuck in N.O. position (C–NO contacts closed before the fan starts).The pressure switch may become stuck or have blocked/condensed intake tubes, causing the PCB to 'see' draft authorization without actual flow. Check with a multimeter that C–NO is open with the fan stopped and only closes when generating depression; inspect the venturi, tubes, and Δp.
How do I know if this pressure switch is for my boiler?
Verify the reference 571652 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part. It is a Honeywell piece.
What is it used for?
The pressure switch controls the pressure/draught (of air in sealed systems) or water to authorize operation.
Is the boiler not starting or showing a draught fault?
If the fan spins but does not ignite, check the pressure tubes (loose/blocked), the diaphragm, and the fan.
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
Check the tightness of the pressure pipes and the switching of the contact.
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.

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