
Flow meter Saunier Duval ThemaClassic F25E Ref. S5720200
If no hot water comes out when you turn on the tap, you may need a Saunier Duval ThemaClassic F25E flow meter. This part acts as a flow detector, allowing the system to activate to produce domestic hot water. When it fails, the water does not heat up even though the tap is open. It is installed in several boilers, such as the ThemaClassic C24E, F24E, among others in the ThemaClassic range, as well as in some models from the Themafast, Thematek, Isofast ranges, and more. You should replace it if you experience a lack of hot water when turning on the tap.
VAT included
Consult via WhatsAppSaunier Duval boilers compatible with reference S5720200
Flow meter with reference S5720200. 33 confirmed compatibilities: ThemaClassic C24E and ThemaClassic C25E.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval ThemaClassic C24E | ThemaClassic | Contrasted |
| Saunier Duval ThemaClassic C25E | ThemaClassic | Contrasted |
| Saunier Duval ThemaClassic F24E | ThemaClassic | Contrasted |
| Saunier Duval ThemaClassic F25E | ThemaClassic | Contrasted |
| Saunier Duval Themafast C24E | Themafast | Contrasted |
| Saunier Duval Themafast C25E | Themafast | Contrasted |
| Saunier Duval Themafast C28E | Themafast | Contrasted |
| Saunier Duval Themafast Condens F24E | Themafast | Contrasted |
| Saunier Duval Themafast Condens F25 | Themafast | Contrasted |
| Saunier Duval Thematek C24E | Thematek | Contrasted |
| Saunier Duval Thematek F24E | Thematek | Contrasted |
| Saunier Duval Thematek S C24E | Thematek | Contrasted |
| Saunier Duval Thematek S F24E | Thematek | Contrasted |
| Saunier Duval Isofast C28E | Isofast | Contrasted |
| Saunier Duval Isofast C35E | Isofast | Contrasted |
| Saunier Duval Isofast F28E | Isofast | Contrasted |
| Saunier Duval Isofast Condens F30E | Isofast | Contrasted |
| Saunier Duval Isofast Condens F35E | Isofast | Contrasted |
| Saunier Duval Isomax C28E | Isomax | Contrasted |
| Saunier Duval Isomax F28E | Isomax | Contrasted |
| Saunier Duval Isomax Condens F35E | Isomax | Contrasted |
| Saunier Duval Isotwin C24EA | Isotwin | Contrasted |
| Saunier Duval Isotwin C28EA | Isotwin | Contrasted |
| Saunier Duval Isotwin F24E | Isotwin | Contrasted |
| Saunier Duval Isotwin F28EA | Isotwin | Contrasted |
| Saunier Duval Opalia C16E | Opalia | Contrasted |
| Saunier Duval Opalia F11E | Opalia | Contrasted |
| Saunier Duval Opalia F14E | Opalia | Contrasted |
| Saunier Duval Opalia F17E | Opalia | Contrasted |
| Saunier Duval Thema NOx F25 | Thema Nox / Thema Condens | Contrasted |
| Saunier Duval Thema Condens F24E | Thema Nox / Thema Condens | Contrasted |
| Saunier Duval Thema Condens F25 | Thema Nox / Thema Condens | Contrasted |
| Saunier Duval Semia F24 | Semia | 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. S5720200 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 S5720200. 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 flow meter S5720200 resolves.
The flow meter detects the passage of water to activate the domestic hot water. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The boiler shows a flow error or lack of water on the display.
Cause: The flow meter does not send the water flow signal to the electronics.
Check the pressure with the manometer and bleed the circuit before changing the part.
- 02
The burner does not start even though there is water and the pressure is correct.
Cause: If the internal turbine does not spin, the sensor does not confirm the flow to the control board.
Check if the turbine spins freely when gently forced before considering the part faulty.
- 03
The fault is intermittent; sometimes it ignites and sometimes it does not.
Cause: It could be due to scale or small particles that irregularly block the turbine.
Check the cold water inlet filter and clean it before replacing the flow meter.
- 04
The domestic hot water is not heating, but the heating is working fine.
Cause: The flow meter specifically controls the domestic water circuit in these boilers.
Confirm that the problem occurs in all taps in the house before blaming this part.
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 the Saunier Duval S5720200 flow meter
- Catalogue reference
- S5720200
- Brand
- Saunier Duval
- Type of part
- Flow Detectors
- Units in stock
- 1 unit
- 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 1
- 00001035190
- Code 2
- 18506100310
- PCB code
- V985-D
- PCB code (2)
- 477
- PCB code (3)
- 252298
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Saunier Duval ThemaClassic F25E Manual (PDF)Document © Saunier Duval, provided as a technical reference.












