Manual Filling Key Saunier Duval Themafast NOx F 30 B 2 Ref. S1007000

Saunier Duval boilers compatible with reference S1007000

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

Verified 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

The part reference, model, and equipment revision must be verified against the manufacturer's documentation.

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 that require diagnosis in the filling valve S1007000

The filling valve allows water to refill the heating circuit. These are the typical symptoms and what to do:

Common symptoms and faults

• 01

  I can't increase the pressure even though I open the filling valve.

  Cause: The internal mechanism of the plug is not allowing water to pass because the shutter is stuck or worn out.

  Check that the network pressure reaches the tap by first opening the main valve of the house.

• 02

  The boiler gradually loses pressure without any visible puddle.

  Cause: The valve does not seal properly and allows water to escape from the circuit to the network slowly.

  Close the main inlet valve and monitor the pressure gauge for a while to see if the pressure drop stops.

• 03

  The pressure rises on its own when the boiler heats, even with the valve closed.

  Cause: The internal seat of the valve does not close completely and allows water from the mains to flow into the circuit.

  Also close the main valve of the installation and check if the pressure gauge stabilizes.

• 04

  It is very difficult to turn the blue cap to open or close it.

  Cause: Lime and dirt in the water block the rotation of the mechanism over the years.

  Try to move it without forcing and check if there is visible scale on the thread before replacing it.

• 05

  There is a small drip at the base of the cap.

  Cause: The internal gasket has lost elasticity and is allowing water to pass through the body.

  Dry the area and check in both cold and hot conditions if the dripping persists before replacing the valve.

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

Uniclima internal SKU

LLTNF30B2

Brand

Saunier Duval

Type of part

Filling valves

Units in stock

3 units

Status

Refurbished

Warranty

1 year

Shipping

Delivery time shown at checkout

Return

14 days

Part data and available documentation

Contrast the label codes, PCB, and revision with the installed part; they are not necessarily equivalent references.

Color of the cap

Blue

Manuals and technical documentation

Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.

• Saunier Duval Themafast C28E Manual (PDF) Document © Saunier Duval, provided as a technical reference.