Filling Key for Isofast F35E Boiler - Ref. S1007000
If you cannot refill water to the heating circuit or notice a continuous water leak, you may need the filling key for the Isofast F35E boiler - Ref. S1007000. This part allows you to add water to the heating circuit to maintain the proper pressure. When it fails, the circuit cannot be refilled or may lose water, causing issues with the boiler's operation. It is compatible with models from the ThemaClassic, Themafast, Thematek, Thema, SemiaTek, and Isofast ranges, among others. It is recommended to replace it when you observe these symptoms.
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 faucet keeps dripping even with the handle fully closed.
Cause: The internal seat has lost its seal and no longer stops the flow of water.
Close the control until you feel a firm stop and wait a few minutes to see if it continues to drip.
- 02
The control knob turns, but it doesn't seem like water is entering the circuit.
Cause: The internal mechanism may be blocked by accumulated scale.
Make sure that the network valve is open and that there is available inlet pressure.
- 03
The knob is hard to turn or gets stuck halfway.
Cause: The stem seizes up with use, especially if the valve hasn't been moved for a while.
Try moving it carefully several times before deciding to replace the part.
- 04
Water is leaking from the joint between the valve and the pipe, not from the handle.
Cause: The sealing gasket of that joint is deteriorated.
Dry the area and observe if the humidity reappears there and not in the adjacent fitting.
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
- The same reference S1007000 also appears listed on a different product page in the store (Isofast Condens F 35 E, SKU LLSDICF35E); this is an inconsistency in the current catalog, do not use it as a purchasing criterion.
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Saunier Duval Isofast F30E Manual (PDF)Document © Saunier Duval, provided as a technical reference.
Frequently asked questions about the filling key S1007000
Does this filling key work for my Isofast F35E boiler?
Can I trust the reference S1007000 to identify this key?
Is the same key used for the Thema Condens F24E and the Themaclassic F25E?
How many models are compatible with the filling key LLIC35EA?
Are there documented fault codes for this filling valve?
Spare parts related to Saunier Duval Themafast
