
3-Way Valve Actuator Motor Saunier Duval Isomax F28 E Ref. S5720600
Actuator motor for the 3-way valve of Saunier Duval boilers Isofast, Isomax, Isotwin, Themaclassic, and Twin F. It diverts water between the heating circuit and the domestic hot water circuit. The replacement requires first confirming the fault of the part through technical diagnosis, even when the boiler remains fixed in one mode, stops providing domestic hot water or heating, or the motor makes noise when switching.
- Type of part
- 3-way valves
- Status
- Refurbished
- Catalogue reference
- S5720600
- Warranty
- 1 year
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
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval C 24 E | ThemaClassic | Contrasted |
| Saunier Duval F 24 E | ThemaClassic | Contrasted |
| Saunier Duval F 25 E | ThemaClassic | Contrasted |
| Saunier Duval C 25 E | ThemaClassic | Contrasted |
| Saunier Duval F 30 E | ThemaClassic | Contrasted |
| Saunier Duval F AS 25 E | ThemaClassic | Contrasted |
| Saunier Duval F AS 30 E | ThemaClassic | Contrasted |
| Saunier Duval C 24 E | Themafast | Contrasted |
| Saunier Duval F 24 E | Themafast | Contrasted |
| Saunier Duval F 30 E | Themafast | Contrasted |
| Saunier Duval C 28 E | Themafast | Contrasted |
| Saunier Duval C 28 E | Isofast | Contrasted |
| Saunier Duval F 28 E | Isofast | Contrasted |
| Saunier Duval C 35 E | Isofast | Contrasted |
| Saunier Duval F 35 E | Isofast | Contrasted |
| Saunier Duval C 28 E | Isomax | Contrasted |
| Saunier Duval F 28 E | Isomax | Contrasted |
| Saunier Duval C 28 E2 | Isomax | Contrasted |
| Saunier Duval F 28 E2 | Isomax | Contrasted |
| Saunier Duval C 24 EA | Isotwin | Contrasted |
| Saunier Duval C 28 EA | Isotwin | Contrasted |
| Saunier Duval F 24 EA | Isotwin | Contrasted |
| Saunier Duval F 28 EA | Isotwin | Contrasted |
| Saunier Duval C 24 E | Combitek | Contrasted |
| Saunier Duval F 24 E | Combitek | Contrasted |
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
The part reference, model, and equipment revision must be verified against the manufacturer's documentation.
- 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.
- Check the full boiler model on its data plate and look for it in the model associations on this page.
- Compare the connections and physical body with the original part before installation.
- If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.
Symptoms that require diagnosis in the 3-way valve S5720600
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 does not switch between heating and domestic hot water.
Cause: The valve motor does not complete the necessary rotation to switch from one circuit to another.
Request a mode change and see if the motor starts moving or remains completely still from the beginning.
- 02
Heats domestic hot water but not the radiators, or vice versa
Cause: The valve has become stuck in one of the two positions.
Check if the blockage is resolved after turning off the boiler for a while; if it fails again, it is not a one-time issue but rather a problem with the gas valve.
- 03
There is noise in the valve motor when switching.
Cause: The gear or motor coupling is worn out and does not transmit the rotation smoothly.
Locate if the noise is coming from the motor or the gas valve itself by touching each part separately with the boiler turned off.
- 04
The valve gets stuck in one position and does not respond to mode changes.
Cause: The internal mechanism has seized up, which is common if the boiler has gone months without using the heating.
Try to manually free it by carefully turning the shaft; if it gives and moves, it might have just been seized due to inactivity.
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
- Uniclima internal SKU
- MV3VSIF28E
- Brand
- Saunier Duval
- Type of part
- 3-way valves
- Units in stock
- 3 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- Return
- 14 days
Part data and available documentation
Contrast the label codes, PCB, and revision with the installed part; they are not necessarily equivalent references.
- Voltage
- 220V - 240V
- Frequency
- 50Hz
- Thermal class
- T70
- Code 1
- 1651/1/0.00
- Code 2
- 105901
- Batch code
- 1401
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.












