Saunier Duval Themafast F 25 E Hydraulic Component - Ref. S1024900

Saunier Duval boilers compatible with reference S1024900

Hydraulic group with reference S1024900. Five confirmed compatibilities: F 25 E and F 30 E.

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. S1024900 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 S1024900. 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 hydraulic group S1024900 resolves.

The hydraulic group includes the valve, the by-pass, and the water connections. These are the typical symptoms and what to do:

Common symptoms and faults

• 01

  Moisture or a specific drip appears in the section of the water circuit where this part is mounted.

  Cause: The gaskets of this component can develop leaks over time.

  Locate precisely where the water is coming from: dry everything and observe with the boiler running for a few minutes.

• 02

  The circuit is losing pressure and needs to be refilled more often than usual.

  Cause: A small leak at any joint in the circuit, including this part, causes a gradual drop in pressure.

  Before replacing this part, rule out the expansion vessel and the filling valve, which can also cause this symptom.

• 03

  The radiators take longer to heat up or the hot water comes out at a lower temperature.

  Cause: If the internal passage of this part narrows due to scale, the flow that circulates is reduced.

  Check the water hardness of the installation and if sludge comes out when bleeding, before attributing it solely to this part.

• 04

  Lime or corrosion residues are visible in the area where this component connects.

  Cause: The deposits of lime and rust indicate a point where there has been moisture, even if it is not currently dripping.

  Clean and dry the area and monitor it for a few days of normal use to confirm if the moisture reappears.

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 Saunier Duval hydraulic group S1024900

Catalogue reference

S1024900

Brand

Saunier Duval

Type of part

Hydraulics

Units in stock

3 units

Status

Refurbished

Warranty

1 year

Shipping

1-2 business days

Return

14 days

Data read on the part and in the manufacturer's documentation

What we have not been able to verify does not appear here.

Reference

S1024900

Manuals and technical documentation

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

• Saunier Duval F 25 E Manual (PDF)Document © Saunier Duval, provided as a technical reference.