Filling Key for Isofast Condens F 35 E and Others - Ref. S1007000
RefurbishedSaunier DuvalFilling valves

Filling Key for Isofast Condens F 35 E and Others - Ref. S1007000

Stock · 5 units

In the Isofast boilers, the filling key S1007000 from Saunier Duval allows you to refill water into the heating circuit, which is necessary to maintain the proper pressure. If this part fails, you will notice that you cannot refill the circuit or that it is continuously leaking water, which can lead to an increase in pressure. It is compatible with models such as Isofast F30E, Isofast F35E, among others. It is recommended to replace it when you observe these symptoms of leakage or inability to fill the system.

VAT included

Compatibility

Saunier Duval boilers compatible with reference S1007000

Filling key with reference S1007000. 23 verified compatibilities: C24E and C25E.

Proven compatibility

Boiler modelFamilyVerification
Saunier Duval C24EThemaClassicContrasted
Saunier Duval C25EThemaClassicContrasted
Saunier Duval F24EThemaClassicContrasted
Saunier Duval F25EThemaClassicContrasted
Saunier Duval C24EThemafastContrasted
Saunier Duval C25EThemafastContrasted
Saunier Duval C28EThemafastContrasted
Saunier Duval F24EThemafastContrasted
Saunier Duval F25EThemafastContrasted
Saunier Duval F30EThemafastContrasted
Saunier Duval C24EThematekContrasted
Saunier Duval F24EThematekContrasted
Saunier Duval F24EThemaContrasted
Saunier Duval F25EThemaContrasted
Saunier Duval THEMA24ECEThemaContrasted
Saunier Duval THEMA24EFEThemaContrasted
Saunier Duval C24SemiaTek / Semia CondensContrasted
Saunier Duval F24SemiaTek / Semia CondensContrasted
Saunier Duval F25 CondensSemiaTek / Semia CondensContrasted
Saunier Duval Isofast F30EIsofast / Isomax / Isotwin CondensContrasted
Saunier Duval Isofast F35EIsofast / Isomax / Isotwin CondensContrasted
Saunier Duval Isomax F35Isofast / Isomax / Isotwin CondensContrasted
Saunier Duval Isotwin F30Isofast / Isomax / Isotwin CondensContrasted

Can't see your model or have questions? The printed reference takes precedence. How to check it ·

Guide

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.

  1. 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.
  2. Check the full boiler model on its data plate and look for it in the model associations on this page.
  3. Compare the connections and physical body with the original part before installation.
  4. If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.
Diagnosis and fault codes

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

    It keeps leaking even though you've turned the handle all the way off.

    Cause: The internal sealing seat is worn and allows water to pass through.

    Press the control all the way down, without forcing it, and wait a couple of minutes to confirm that the dripping does not stop.

  • 02

    When trying to recharge pressure with the valve open, the pressure gauge barely moves.

    Cause: There may be lime scale obstructing the internal mechanism of the valve.

    Check that the main water supply valve is open before assuming the valve is faulty.

  • 03

    The control knob is stiff, turns with difficulty or in jerks.

    Cause: The internal stem seizes over time and due to lack of use.

    Move it carefully a few times; if it never releases, the fault is mechanical.

  • 04

    There is constant moisture on the thread of the valve, not on the shut-off handle.

    Cause: The gasket of that joint has lost its seal.

    Dry the area and monitor for 10 minutes: if it becomes damp again right there, it's the valve and not the fitting next to 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.

Technical data

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
Before purchasing
  • The same reference S1007000 also appears listed in a different product sheet in the store (Isofast C 35 EA, SKU LLIC35EA); this is an inconsistency in the current catalog, do not use it as a purchasing criterion.
Frequently Asked Questions

Frequently asked questions about the filling key S1007000

Is the filling key with reference S1007000 suitable for an Isofast Condens F 35 E?
Yes, it is on the list of boilers compatible with this filling valve.
Is this key suitable for a Semiatek F24?
Yes, the Semiatek F24 is on the list of boilers compatible with this part.
Is the reference S1007000 reliable for identifying this filling valve?
That same reference also appears in a different entry in the catalog; it is a current inconsistency and should not be used alone to decide the purchase.
What fault does this filling valve resolve in the Thema24ECEV?
Allows refilling water in the heating circuit when the boiler loses pressure: open to refill and close when finished.

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Filling Key for Isofast Condens F 35 E and Others - Ref. S1007000