Water Pressure Sensor Saunier Duval Isomax F 28 E Ref. S5720500
RefurbishedSaunier DuvalPressure sensors

Water Pressure Sensor Saunier Duval Isomax F 28 E Ref. S5720500

Stock · 5 units

Water pressure sensor for Saunier Duval boilers. The label only contains the internal code PSN0001 A, marked CE and 'Made in France'; there is no manufacturer's name printed. It is compatible with a wide range of Saunier Duval (Isomax, Thema, Ultimate, Isofast, among others). It is replaced if the boiler does not read the water circuit pressure correctly.

VAT included

Compatibility

Saunier Duval boilers compatible with reference S5720500

Pressure sensor with reference S5720500. Six confirmed compatibilities: F 25 E and C 25 E.

Proven compatibility

Boiler modelFamilyVerification
Saunier Duval F 25 EThemaClassicContrasted
Saunier Duval C 25 EThemaClassicContrasted
Saunier Duval F 30 EThemaClassicContrasted
Saunier Duval C 24 E1ThemaClassicContrasted
Saunier Duval F 24 E1ThemaClassicContrasted
Saunier Duval F 35 EIsofastContrasted

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

Guide

How to check if ref. S5720500 is the part 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 S5720500. 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 sensor S5720500 resolves.

The pressure sensor measures the water pressure for the electronics. These are the typical symptoms and what to do:

Common symptoms and faults

  • 01

    The boiler shows a water pressure fault even though the circuit has the correct pressure.

    Cause: The sensor sends an incorrect reading of the actual pressure in the circuit.

    Measure the pressure with the boiler's manometer or an external one before changing the sensor.

  • 02

    The pressure indicator is unresponsive, it remains stuck or shows zero.

    Cause: The sensor has stopped generating the signal corresponding to the water pressure.

    Bleed or fill the circuit and observe if the indicator reacts; if it does not change, the signal is not reaching the PCB.

  • 03

    The pressure reading on the display shows values that change for no apparent reason.

    Cause: A fault in the sensor or its connection causes an unstable signal that the PCB interprets as pressure variations.

    Check the connector of the sensor for any rust or poor contact before replacing the part.

  • 04

    The boiler locks out when trying to ignite, without allowing any more time.

    Cause: Without a valid pressure signal, the control board does not allow ignition for safety reasons.

    Check that there is water in the circuit and that the filling valves are open before suspecting the sensor.

Fault codes from Saunier Duval that this spare part resolves.

CodeFaultDiagnosis and solution
F9Water pressure sensor fault.The pressure transducer S5720500 delivers an absent/out-of-range signal or does not reach the PCB, the electronics interpret an abnormal pressure and lock with F9; verify by measuring the sensor signal and the harness/wiring and comparing with an external manometer.

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 Saunier Duval pressure sensor S5720500

Catalogue reference
S5720500
Brand
Saunier Duval
Type of part
Pressure sensors
Units in stock
5 units
Status
Refurbished
Warranty
1 year
Shipping
Delivery time shown at checkout
Return
14 days

Data read on the part and in the manufacturer's documentation

What we have not been able to verify does not appear here.

Printed code
PSN0001 A
Marked
CE
Place of manufacture
Made in France
Documentation

Manuals and technical documentation

Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.

Frequently Asked Questions

Frequently asked questions about the pressure sensor S5720500

Is this pressure sensor compatible with my Saunier Duval Thema Classic boiler?
Yes, the water pressure sensor Saunier Duval Isomax F 28 E (Ref. SPSIF28E) is compatible with the models from the Thema Classic range, which include F 25 E, C 25 E, F 30 E, C 24 E1, and F 24 E1.
Which boiler models are compatible with this pressure sensor?
This sensor is compatible with a total of 6 models: F 25 E, C 25 E, F 30 E, C 24 E1, F 24 E1 from the Thema Classic range and F 35 E from the Isofast range.
When should I replace the water pressure sensor SPSIF28E?
You must replace the sensor if the boiler does not read the water circuit pressure correctly.
What fault code is related to this pressure sensor?
The documented fault code for this product is F9.
Does this pressure sensor work with boilers from other brands?
No, this water pressure sensor Saunier Duval Isomax F 28 E (Ref. SPSIF28E) is specific to the Saunier Duval boiler models mentioned in the compatibility table.

Spare parts related to Saunier Duval ThemaClassic

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Technical supportwe verify your model
Water Pressure Sensor Saunier Duval Isomax F 28 E Ref. S5720500