Saunier Duval ThemaClassic F 25 E flow switch Ref. S5720200

Saunier Duval boilers compatible with reference S5720200

Flow meter with reference S5720200. 33 confirmed compatibilities: ThemaClassic C24E and ThemaClassic 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. S5720200 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 S5720200. 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 flow meter S5720200

The flow meter detects the passage of water to activate the domestic hot water. These are the typical symptoms and what to do:

Common symptoms and faults

• 01

  You turn on the hot water tap and the boiler does not start.

  Cause: The flow switch does not detect the flow of water and does not send the ignition signal to the control board.

  Check that the flow rate at that faucet is sufficient: a dirty aerator or low mains pressure can simulate the same fault.

• 02

  The hot water comes out and cuts off intermittently, as if it were coughing.

  Cause: The flow switch intermittently loses contact due to dirt or wear of the internal paddle.

  Open and close the tap several times in a row to see if the cut always occurs at the same flow point.

• 03

  The boiler ignites well for heating but does not provide domestic hot water.

  Cause: It is the typical pattern when the domestic hot water pressure switch fails while the rest of the circuit operates normally.

  First, rule out a clogged water inlet filter, which reduces the flow rate below the minimum that activates the flow switch.

• 04

  The flow of hot water has decreased significantly even though the pressure of the system is normal.

  Cause: A stuck float or turbine of the pressure switch does not rotate enough to provide the complete signal.

  Check the pressure on the boiler's manometer before intervening: if it is low, the problem may be related to pressure and not the pressure switch.

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 S5720200 flow meter

Catalogue reference

S5720200

Uniclima internal SKU

DFTF25

Brand

Saunier Duval

Type of part

Flow detectors

Units in stock

6 units

Status

Refurbished

Warranty

1 year

Shipping

Delivery time shown at checkout

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 Thematek S F24E Manual (PDF) Document © Saunier Duval, provided as a technical reference.