
Filling Key Saunier Duval Isotwin Condens F30 - Ref. S1007000
If you are unable to refill water into the heating circuit or notice that it is continuously leaking, you may need the filling key Saunier Duval Isotwin Condens F30 - Ref. S1007000. This part allows you to recover the system pressure, ensuring it operates correctly. It is installed in boilers from the ThemaClassic, Themafast, Thematek, Thema, SemiaTek / Semia Condens, and Isofast / Isomax / Isotwin Condens ranges, among others. It is advisable to replace it when you experience issues filling the circuit or observe a water leak.
VAT included
Consult via WhatsAppSaunier Duval boilers compatible with reference S1007000
Filling key with reference S1007000. 23 verified compatibilities: C24E and C25E.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval C24E | ThemaClassic | Contrasted |
| Saunier Duval C25E | ThemaClassic | Contrasted |
| Saunier Duval F24E | ThemaClassic | Contrasted |
| Saunier Duval F25E | ThemaClassic | Contrasted |
| Saunier Duval C24E | Themafast | Contrasted |
| Saunier Duval C25E | Themafast | Contrasted |
| Saunier Duval C28E | Themafast | Contrasted |
| Saunier Duval F24E | Themafast | Contrasted |
| Saunier Duval F25E | Themafast | Contrasted |
| Saunier Duval F30E | Themafast | Contrasted |
| Saunier Duval C24E | Thematek | Contrasted |
| Saunier Duval F24E | Thematek | Contrasted |
| Saunier Duval F24E | Thema | Contrasted |
| Saunier Duval F25E | Thema | Contrasted |
| Saunier Duval THEMA24ECE | Thema | Contrasted |
| Saunier Duval THEMA24EFE | Thema | Contrasted |
| Saunier Duval C24 | SemiaTek / Semia Condens | Contrasted |
| Saunier Duval F24 | SemiaTek / Semia Condens | Contrasted |
| Saunier Duval F25 Condens | SemiaTek / Semia Condens | Contrasted |
| Saunier Duval Isofast F30E | Isofast / Isomax / Isotwin Condens | Contrasted |
| Saunier Duval Isofast F35E | Isofast / Isomax / Isotwin Condens | Contrasted |
| Saunier Duval Isomax F35 | Isofast / Isomax / Isotwin Condens | Contrasted |
| Saunier Duval Isotwin F30 | Isofast / Isomax / Isotwin Condens | 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. S1007000 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 S1007000. 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 filling valve S1007000 resolves.
The filling valve allows water to refill the heating circuit. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The boiler shows low pressure or a water shortage error even though you have just refilled it.
Cause: An internal leak in the valve, due to wear of its gasket, allows water to escape slowly without being visible from the outside.
Check the pressure gauge after a few hours without manipulating the boiler; if it drops on its own and there are no visible leaks in other areas, suspect this part.
- 02
You notice humidity or dripping right in the area where the valve is installed.
Cause: The internal seal of the valve loses tightness with use, and water finds its way out through there.
Dry the area with a cloth and check a few minutes later if the dripping reappears exactly at that point before replacing the part.
- 03
The key gets stuck or doesn't turn when trying to open it to refill.
Cause: The internal plastic mechanism gets clogged with limescale when it hasn't been used for a while.
Try a gentle movement without forcing it; forcing the turn may break the body before confirming if the problem is just dirt.
- 04
You fill the circuit but the pressure doesn't rise at all.
Cause: If the internal passage is blocked or the gasket does not open properly, the mains water does not enter the circuit.
Confirm that the network valve is open and that the filling connection is not blocked or bent.
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 filling key Saunier Duval S1007000
- Catalogue reference
- S1007000
- Brand
- Saunier Duval
- Type of part
- Filling valves
- Units in stock
- 5 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- 1-2 business days
- Return
- 14 days












