Pressure Sensor Saunier Duval Isofast F 30 E H MOD - Code 0020016532
When you open the tap or start the heating, the pressure sensor Saunier Duval Isofast F 30 E H MOD - Code 0020016532 is responsible for measuring the water circuit pressure and sending the information to the control board. If this sensor fails, you may notice incorrect readings and lockouts due to a false lack of pressure, which can lead to malfunctioning of the boiler. It is compatible with models such as F 25 E, C 25 E, F 30 E, C 24 E1, F 24 E1, and F 35 E, among others. It is recommended to replace it when these symptoms occur or a fault of the water pressure detector (F9) is detected.
VAT included
Consult via WhatsAppSaunier 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 a pressure warning when trying to ignite, even though the circuit is properly charged.
Cause: The sensor sends a reading outside the safe range to start.
Check with the boiler's pressure gauge that the pressure is between 1 and 1.5 bar when cold before replacing the part.
- 02
The boiler works for a while and then stops by itself showing a pressure fault.
Cause: A fluctuating signal from the sensor causes the control unit to interpret a pressure drop that does not exist.
Check the wiring and the connector of the sensor for any intermittent loose contact.
- 03
You have re-pressurized the circuit and the boiler displays the same warning upon starting.
Cause: The sensor keeps sending the same incorrect data, no matter what you do with the filling valve.
Compare the reading on the display with the mechanical manometer after properly bleeding the circuit.
- 04
The pressure fault code always appears at the same point in the ignition cycle.
Cause: The PCB requires a valid pressure reading at that specific step to continue the startup.
Note the exact moment the fault appears to rule out an air bleeding issue.
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
- 4 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- 1-2 business days
- 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.
- Code printed on the part
- 0020016532
- Batch production
- 120104 B
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
What is the code and batch number for the pressure sensor of the Saunier Duval Isofast F 30 E H MOD?
For which models is this pressure sensor compatible?
What fault indicates that this pressure switch needs to be replaced?
What is the reference for this pressure sensor?
What fault code is documented for this pressure sensor?
How many models are compatible with this pressure switch?
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