Pressure Sensor Saunier Duval ThemaClassic F 25 E Ref. S5720500
When you open the tap or turn on the heating, the pressure sensor Saunier Duval ThemaClassic F 25 E measures the water pressure in the circuit and sends the information to the control board. If this part fails, you may notice incorrect readings and, in some cases, lockouts due to a false lack of pressure, which could manifest with the fault code F9. This sensor is compatible with several boilers in the ThemaClassic range, such as the F 25 E, C 25 E, and F 30 E, among others. A technician should confirm through diagnosis whether it needs to be replaced when you start experiencing these operational issues.
- Type of part
- Pressure sensors
- Status
- Refurbished
- Catalogue reference
- S5720500
- Warranty
- 1 year
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 model | Family | Verification |
|---|---|---|
| Saunier Duval F 25 E | ThemaClassic | Contrasted |
| Saunier Duval C 25 E | ThemaClassic | Contrasted |
| Saunier Duval F 30 E | ThemaClassic | Contrasted |
| Saunier Duval C 24 E1 | ThemaClassic | Contrasted |
| Saunier Duval F 24 E1 | ThemaClassic | Contrasted |
| Saunier Duval F 35 E | Isofast | Contrasted |
Can't see your model or have questions? The printed reference takes precedence. How to check it · Send us a photo via WhatsApp.
How to check if ref. S5720500 is the part for your boiler
The part reference, model, and equipment revision must be verified against the manufacturer's documentation.
- 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.
- Check the full boiler model on its data plate and look for it in the model associations on this page.
- Compare the connections and physical body with the original part before installation.
- If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.
Symptoms that require diagnosis in the pressure switch S5720500
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 intermittently locks out with a pressure fault warning, sometimes yes and sometimes no, without a clear pattern.
Cause: The sensor gives unstable readings and the control unit shuts down operation when the signal goes out of the expected range.
Note whether the fault occurs always when starting cold or also when hot; this helps to distinguish the sensor from another cause.
- 02
The pressure displayed on the screen does not match the reading on the boiler's analog manometer.
Cause: The sensor element loses calibration and incorrectly translates the actual hydraulic pressure into an electrical signal.
Take note of the difference between both readings over several days before deciding on the change.
- 03
When filling with water and increasing the pressure, the boiler takes time to reflect it on the screen or the change is barely noticeable.
Cause: The sensor responds slowly or weakly to changes in the circuit pressure.
Check the connector and the cable of the sensor; a poor connection can also delay or distort the reading.
- 04
Moisture or small droplets are observed around the thread where the sensor is installed.
Cause: Over time, the part loses its tightness and allows water from the circuit to escape from that point.
Dry the area well and check after a few minutes of operation if the humidity reappears right there.
Fault codes Saunier Duval that require diagnosis
| Code | Fault | Technical checks |
|---|---|---|
| F9 | Water 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.
Data sheet for Saunier Duval pressure sensor S5720500
- Catalogue reference
- S5720500
- Uniclima internal SKU
- PSN0001A
- Brand
- Saunier Duval
- Type of part
- Pressure sensors
- 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.
- Printed code
- PSN0001 A
- Batch code/date
- 46/00
- Place of manufacture
- Made in France
- Marked
- CE
Frequently asked questions about the pressure sensor S5720500
Does this pressure switch work for the Saunier Duval Isofast F 35 E?
Is it also suitable for the Saunier Duval Thema C 24 E?
Where is this part of the Saunier Duval ThemaClassic manufactured?
What fault requires changing this sensor in a Saunier Duval Thema F 25 E?
How can I distinguish this part from the sensor of the Renova Teknic F 23 E, which shares the same reference S5720500?
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