Pressure switch ARISTON BASIC 23 MFFI Ref. 571653
Refurbished Ariston Pressure switches

Pressure switch ARISTON BASIC 23 MFFI Ref. 571653

In the ARISTON BASIC 23 MFFI boilers, the ARISTON BASIC 23 MFFI pressure switch Ref. 571653 is a component that checks the air or water pressure and authorizes the operation of the boiler. If this part fails, you will notice that the boiler does not start or gets locked, even when the actual pressure is correct. It is compatible with models such as the BASIC 23 MFFI and the NEW BASIC 23 MFFI, among others. A technician must confirm through diagnosis whether it is necessary to replace the pressure switch when you experience these fault symptoms.

Type of part
Pressure switches
Status
Refurbished
internal SKU
PR23MFFI
Warranty
1 year
VAT included Stock · 7 units
Compatibility

Compatible Ariston boilers

Pressure switch. Two confirmed compatibilities: BASIC 23 MFFI and NEW BASIC 23 MFFI.

Verified compatibility

Boiler modelFamilyVerification
Ariston BASIC 23 MFFIARISTONVerified
Ariston NEW BASIC 23 MFFIARISTONVerified

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

Guide

How to check if it is the part for your boiler

The part reference, model, and equipment revision must be verified against the manufacturer's documentation.

  1. Find the reference printed on the installed part and check whether it matches the catalogue reference —. If it is not visible, do not identify the part by 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 that require diagnosis in the pressure switch

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

    The boiler tries to ignite, the fan starts for a moment and then shuts off without lighting the flame.

    Cause: The pressure switch does not detect the correct depression in the flue duct, and the control unit cuts off the gas supply for safety.

    Make sure the fan spins freely and quietly before considering that the pressure switch is faulty.

  • 02

    The display shows a lock or fault, and the boiler needs to be reset to attempt to ignite again.

    Cause: It is the normal response of the pressure switch when it does not close the contact within the time required by the control board.

    Note whether the blockage occurs always or only with strong wind outside, this helps to identify if it is the pressure switch or the flue.

  • 03

    The boiler starts up well some days and does not ignite on others, without a clear pattern.

    Cause: A pressure switch with a dirty or worn contact switches irregularly according to the actual pressure it receives.

    Turn it on several times in a row and note if the fault always occurs at the same point in the cycle.

  • 04

    The extractor is heard working, but the boiler does not ignite the flame.

    Cause: The pressure switch gives the green light to the gas valve after confirming the evacuation pressure; if it doesn't switch, the gas doesn't open.

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

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

Ariston pressure switch datasheet

Uniclima internal SKU
PR23MFFI
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

Part data and available documentation

Contrast the label codes, PCB, and revision with the installed part; they are not necessarily equivalent references.

maximum pressure
100 mbar
Frequently asked questions

Frequently asked questions about the pressure switch

Is this pressure switch suitable for the Ariston Basic 23 MFFI?
Yes, it is compatible with the Ariston Basic 23 MFFI.
Is it also suitable for the Ariston New Basic 23 MFFI?
Yes, the New Basic 23 MFFI is listed as a compatible boiler.
Delivery calculated by destination Delivery time shown at checkout
1-year warranty inspected and tested
14-day return uninstalled parts
Technical support we verify your model
Pressure switch ARISTON BASIC 23 MFFI Ref. 571653