Hydraulic Body (Pump/Bleed Valve) Saunier Duval Semia Tek F24

Compatible Saunier Duval boilers

Hydraulic group. Three verified compatibilities: TEK F24 and CONDENS F24 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 it 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 —. If it is not visible, do not identify the part by 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 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

  One or more radiators remain cold or take a long time to heat up, even though the boiler ignites and operates.

  Cause: An internal fault in the pump prevents the water from circulating with enough force throughout the system.

  With the boiler stopped, check if the shaft rotates freely by removing the front plug before declaring the part faulty.

• 02

  The circuit needs to be bled over and over again because air keeps entering shortly after.

  Cause: If the bleeder fails, the air stops escaping and becomes trapped, reappearing with each heating cycle.

  Thoroughly bleed the circuit and the highest radiators in the house before concluding that the automatic bleeder is broken.

• 03

  A constant buzzing or rubbing sound is heard in the area of this part.

  Cause: A bearing or a shaft seized by lime causes the motor to strain without rotating properly.

  Check if the noise stops when gently forcing the shaft with a screwdriver in the front slot; if it turns freely, the noise is coming from somewhere else.

• 04

  The boiler indicates a pressure or circulation fault even though the expansion vessel and the circuit pressure are fine.

  Cause: Without sufficient flow, the flow sensor interprets that there is no circulation and blocks the boiler for safety.

  Check the pressure on the manometer and ensure that all shut-off valves in the installation are fully open before replacing the part.

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

Brand

Saunier Duval

Type of part

Hydraulic units

Units in stock

1 unit

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 CONDENS F24 E Manual (PDF)Document © Saunier Duval, provided as a technical reference.