Manual Filling Key Isofast F35E - Ref. S1007000

Saunier Duval boilers compatible with reference S1007000

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

Proven compatibility

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.

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.

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 drops and the circuit needs to be manually refilled frequently.

  Cause: The valve that allows the mains water to flow does not seat properly and may leak pressure without showing any visible dripping.

  Check the pressure gauge in both cold and hot conditions for a couple of days to confirm that the loss is real and not just due to the expansion of the water.

• 02

  Water is leaking around the square body of the valve.

  Cause: The closing mechanism inside the square body wears out, allowing water to escape.

  Dry the area and check after a while of the boiler running to distinguish an active leak from residual moisture.

• 03

  The valve is cracked or broken and does not open or close.

  Cause: The technical plastic part becomes brittle over time and with the heat from the boiler.

  Do not force the rotation if you notice resistance, as a cracked body may break and cause a larger leak.

• 04

  The cap to operate the key cannot be found.

  Cause: The plug is not visible at first glance in this model; you need to locate the activation point carefully.

  Check the boiler's gap next to the filling fitting with a flashlight before assuming that a part is missing.

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

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.