Pressure Sensor Saunier Duval ThemaClassic C 24 E Ref. S5720500
In the Saunier Duval ThemaClassic range boilers, the ThemaClassic C 24 E pressure sensor measures the water circuit pressure and sends this information to the control board. If this part fails, you may experience incorrect readings and possible lockouts due to low pressure, which can result in fault code F9. It is compatible with models such as ThemaClassic F 25 E, C 25 E, F 30 E, among others. It should be replaced when you notice these symptoms or if the boiler has operational issues related to pressure.
VAT included
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
What determines it is not the boiler model, but the reference printed on the part you already have installed.
- 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 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 low pressure on the display even though the circuit is full and there are no leaks.
Cause: The sensor is not reading the pressure correctly and is sending incorrect data to the control board.
Compare the pressure displayed on the screen with an external manometer before considering that there is a fault.
- 02
The appliance turns off occasionally due to low pressure and then starts working again by itself.
Cause: A flashing signal from the sensor causes the control board to think that the pressure is low when in fact it is not.
Check the connector of the sensor for oxidation or poor contact before replacing the part.
- 03
The display remains fixed on a number no matter how much the circuit is bled or filled.
Cause: The sensor may be stuck on a reading and not detect the actual changes in water pressure.
Fill or bleed the system a little while observing the display to see if the value changes.
- 04
The boiler does not start and shows a pressure warning, even though the circuit is properly filled.
Cause: If the sensor sends an incorrect value, the control unit interprets that there is a lack of water and blocks the ignition for safety.
Note the specific fault code and compare it with the manual before purchasing the sensor.
Fault codes from Saunier Duval that this spare part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| 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
- Brand
- Saunier Duval
- Type of part
- Pressure sensors
- Units in stock
- 8 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- Return
- 14 days
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Saunier Duval F 25 E Manual (PDF)Document © Saunier Duval, provided as a technical reference.
Frequently asked questions about the pressure sensor S5720500
Is this pressure sensor suitable for the Saunier Duval Themaclassic C 24 E?
Is this collector suitable for the Saunier Duval Isofast C 28 E?
Spare parts related to Saunier Duval ThemaClassic
