Saunier Duval Flowmeter Flow Detector Isomax C 28 E2 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

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

  Cause: The flow detector does not detect the passage of water and the boiler does not start for domestic hot water.

  Check that there is sufficient pressure and flow in the network before considering that the detector is faulty.

• 02

  The water comes out hot for a while and then suddenly cools down without turning off the tap.

  Cause: The internal turbine gets stuck with scale or debris and intermittently loses the flow signal.

  Remove the part and turn the knob by hand; if it doesn't turn freely, clean it before replacing it.

• 03

  You notice humidity or a dripping in the area of the sensor.

  Cause: It is a plastic part that can crack over time or due to a pressure impact during installation.

  Dry the area, apply pressure, and check if water is coming out of the body of the sensor or from a nearby joint.

• 04

  With the tap slightly open, there is no hot water, but when fully opened, it ignites.

  Cause: The detector requires a minimum flow rate to activate the contact and request ignition.

  Check the inlet pressure and the condition of the filter before considering the part to be faulty.

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

7 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.