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

Air Pressure Switch Ariston Genus 27 Bffi Honeywell Ref. 571652

Stock · 7 units

The air pressure switch Ariston Genus 27 Bffi Honeywell monitors the air pressure and authorizes the operation of the boiler. If it fails, the boiler will not start or will lock out, even if the pressure is correct, and it may display the fault code B: Air pressure switch stuck in N.O. position (C–NO contacts closed before the fan starts). This model is compatible with boilers from the Genus range, such as the Genus 27 BFFI, Genus 27 MFFI, Genus 27 RFFI System, and Genus 30 MFFI, as well as the EuroCombi A27 MFFI. It is recommended to replace it when the mentioned symptoms are detected.

VAT included

Compatibility

Ariston boilers compatible with reference 571652

Pressure switch with reference 571652. Five confirmed compatibilities: Genus 27 BFFI and Genus 27 MFFI.

Proven compatibility

Boiler modelFamilyVerification
Ariston Genus 27 BFFIGenusContrasted
Ariston Genus 27 MFFIGenusContrasted
Ariston Genus 27 RFFI SystemGenusContrasted
Ariston Genus 30 MFFIGenusContrasted
Ariston EuroCombi A27 MFFIEuroCombiContrasted

Can't see your model or have questions? The printed reference takes precedence. How to check it ·

Guide

How to check if the part number 571652 is the one 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 571652. 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.
Diagnosis and fault codes

Symptoms and faults that the pressure switch 571652 resolves.

The pressure switch controls the air or water pressure to authorize operation. These are the typical symptoms and what to do:

Common symptoms and faults

  • 01

    You turn on the ignition, the fan starts, and the boiler stops after a few seconds without igniting.

    Cause: The pressure switch does not close the air contact, and the control board blocks the gas flow as a safety measure.

    Check that the silicone tubes going from the pressure switch to the fan are not loose, bent, or have condensed water.

  • 02

    The fan is making more noise and takes longer than usual before it tries to start.

    Cause: The diaphragm of the pressure switch is stuck or there is a leak in the pipes that reduces the actual depression reaching it.

    Check that the connection fittings are properly fitted and without visible cracks in the pipe.

  • 03

    It has been unused for months and now, when starting it up, it doesn't ignite on the first attempt.

    Cause: The accumulated condensation in the pipes during the shutdown blocks the airflow to the pressure switch.

    Disassemble the pipes and check that they are clean and dry on the inside before replacing the part.

  • 04

    If you insist on multiple resets in a row, it sometimes ignites on its own.

    Cause: The internal electrical contact is worn out and makes a poor connection at the switching point.

    With the boiler disconnected, check that the pressure switch wires are securely attached and free of oxidation.

Fault codes for Ariston that this part resolves.

CodeFaultDiagnosis and solution
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.

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.

Technical data

Data sheet for the Ariston pressure switch 571652

Catalogue reference
571652
Brand
Ariston
Type of part
Pressure switches
Units in stock
7 units
Status
Refurbished
Warranty
1 year
Shipping
Delivery time shown at checkout
Return
14 days
Frequently Asked Questions

Frequently asked questions about the pressure switch 571652

Is this Honeywell air pressure switch Ref. 571652 compatible with the Ariston Genus 27 BFFI?
Yes, the Genus 27 BFFI is on the list of boilers compatible with reference 571652.
Does the pressure switch Ref. 571652 work for the Ariston Genus 27 MFFI?
Yes, the Genus 27 MFFI is listed among the boilers compatible with this reference.
Can I use the Honeywell pressure switch Ref. 571652 in the Ariston Genus 30 MFFI?
Yes, the Genus 30 MFFI is compatible with reference 571652.
Is this pressure switch suitable for the EuroCombi A27 MFFI?
Yes, the EuroCombi A27 MFFI is on the list of boilers compatible with reference 571652.
What fault codes are documented for the Honeywell air pressure switch Ref. 571652?
The only documented fault code for this product is B.
How many models are compatible with the Honeywell air pressure switch Ref. 571652?
A total of 5 models are compatible with this reference.

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Air Pressure Switch Ariston Genus 27 Bffi Honeywell Ref. 571652