3-Way Valve Motor Saunier Duval Isofast F 35 E1

Saunier Duval boilers compatible with reference S5720600

3-way valve with reference S5720600. 25 confirmed compatibilities: C 24 E and F 24 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. S5720600 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 S5720600. 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 S5720600 three-way valve resolves.

The 3-way valve diverts water between heating and domestic hot water. These are the typical symptoms and what to do:

Common symptoms and faults

• 01

  The boiler heats the heating system normally, but when the tap is opened, hot water does not come out, or vice versa.

  Cause: The valve motor does not manage to divert the water flow towards the domestic hot water circuit, and it runs out of flow.

  Check if the fault occurs only when combining domestic hot water and heating at the same time, or also when requesting each circuit separately.

• 02

  The valve gets stuck in one position and does not respond to mode changes.

  Cause: The motor loses power or the mechanism gets stuck, and the stem remains fixed even though the control unit sends the command to change.

  With the boiler turned off and unplugged, try gently moving the motor shaft to rule out that it is simply stuck due to dirt.

• 03

  A buzzing sound, a grinding noise, or an attempt to turn that does not complete.

  Cause: The motor forces the rotation against an internal resistance, and that effort generates the noise before stopping.

  Note how long the noise lasts; if it continues for several seconds without the gas valve finishing its movement, it is a clear symptom of a seized motor.

• 04

  The boiler takes too long to provide hot water, as if it first needs to "think about it."

  Cause: A motor that moves with difficulty delays the circuit switch, and that delay is noticeable as a lag in the domestic hot water output.

  Time how long it takes for hot water to come out after you turn on the tap; if the delay has increased over time, point to the pump.

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 S5720600 three-way valve.

Catalogue reference

S5720600

Brand

Saunier Duval

Type of part

3-way valves

Units in stock

5 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.

Secondary code

105901

Voltage

220V - 240V

Frequency

50Hz

Temperature class

T70

Batch code or date

0801

Manuals and technical documentation

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

• Saunier Duval F 28 E Manual (PDF)Document © Saunier Duval, provided as a technical reference.