Flow Detector Boiler Saunier Duval Isofast C 28 E - Ref. S5720200

Saunier Duval boilers compatible with reference S5720200

Flow meter with reference S5720200. 33 confirmed compatibilities: ThemaClassic C24E and ThemaClassic 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. S5720200 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 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 and faults that the flow meter S5720200 resolves.

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

  When opening the hot water tap, the boiler takes several seconds to ignite the flame.

  Cause: The flow detector does not send the signal on time because its paddle or turbine does not rotate properly.

  Open the tap to the maximum and check if the delay shortens; if so, it may just be insufficient flow in the installation.

• 02

  The boiler does not ignite for hot water, although it works fine for heating.

  Cause: The flow detector does not detect the passage of water and the control board does not give the command to turn on the burner for domestic hot water.

  Check the cold water inlet filter, as if it is blocked, it reduces the flow below the minimum detection level.

• 03

  The water comes out cold for a moment at first and then hot, as if it takes time to react.

  Cause: A flow detector with a jammed or dirty turbine responds slowly to the start of consumption.

  Close and open the tap several times in a row and observe if the delay is constant or if it only happens the first time.

• 04

  The boiler turns on and off by itself several times while there is a hot water tap open.

  Cause: A flow detector that gives an intermittent signal causes the control unit to interpret that the consumption is interrupted and starts again.

  Check that the flow rate at that faucet is stable and does not depend on other simultaneous consumption in the house before replacing the part.

• 05

  The display shows a fault code related to the flow of domestic hot water.

  Cause: The control board detects that the signal from the flow sensor does not match the expected parameters to allow the domestic hot water to flow.

  Note the exact code displayed by the boiler and compare it with the manual before deciding that it is the flow detector.

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

Brand

Saunier Duval

Type of part

Flow Detectors

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