
Filling Key Saunier Duval Combitek C 24 E - Ref. S1007000
In the Saunier Duval Combitek range boilers, the filling key S1007000 allows you to replenish water to the heating circuit to maintain the proper pressure. If this part fails, you will notice that you cannot refill the circuit or that it continuously leaks water, causing an increase in pressure. It is compatible with models such as C24E, C25E, and F24E, among other options in the range. It should be replaced when it shows leaks or does not function properly when trying to fill the circuit.
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 pressure gauge shows low pressure and the circuit needs to be refilled every few days.
Cause: The filling valve does not seal properly when closed and allows water to pass slowly into the circuit.
Close the valve completely, dry the area well, and observe for a few minutes to see if moisture reappears before considering it faulty.
- 02
A ring of water or drops appear under the filling valve.
Cause: The internal seal or the body of the valve has lost its tightness, and the water is leaking out there instead of staying in the circuit.
Tighten the union fitting with an appropriate wrench, without forcing it, in case the leak comes from a loose thread and not from the valve itself.
- 03
The blue knob with a white ring turns, but you don't feel any resistance or that it opens or closes anything.
Cause: The internal mechanism that pushes the shutter has broken or become disconnected from the knob.
Slowly move the knob from end to end and check if the pressure gauge reacts; if the needle doesn't move, the mechanism is broken.
- 04
The valve is stiff, it's hard to turn or it doesn't move at all.
Cause: Limescale or residues in the circuit have seized the internal mechanism, something common after months without using it.
Try gently moving the knob in both directions without applying too much force; if it doesn't budge at all, confirm the jamming before replacing it.
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
- 3 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- 1-2 business days
- 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 Thematek F24E Manual (PDF)Document © Saunier Duval, provided as a technical reference.












