3-Way Valve Saunier Duval Thema F 23 E Ref. 05740400
RefurbishedSaunier Duval3-way valves

3-Way Valve Saunier Duval Thema F 23 E Ref. 05740400

45 €VAT included

3-way valve: refurbished spare part that diverts water between heating and domestic hot water. Useful if it provides hot water but does not heat radiators, or vice versa. Compatible with Thema F 23 E, Thema C 23 E, Thema 23 (ref. 05740400). Includes a one-year warranty and delivery within 2–4 working days in the EU.

1
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Delivery in 2–4 working days
1-year warranty
14-day return
Technical support

Key Data

Reference
05740400
Brand
Saunier Duval
Type of part
3-way valves
Available units
0 units in stock
Status
Refurbished
Warranty
1 year
Shipping
2–4 working days (EU)
Return
14 days

The same part (ref. 05740400) equips these models. Verified compatibility; check the reference before purchasing.

Thema

  • Thema F 23 E
  • Thema C 23 E
  • Thema 23

Themaplus

  • Themaplus C 23 E
  • Themaplus F 23 E

Combitek

  • Combitek C 23
  • Combitek F 23

Fault codes related to this part (not the entire boiler). They usually have more possible causes: first rule out electrodes, wiring/connections, and gas supply. Verified with ≥3 sources.

CodeWhat does it mean?Cause and diagnosis (this part)
F.318The 3-way motorised valve is not moving.The 3-way valve (actuator or gears) is blocked or without power, so it does not switch between DHW/heating; check by activating the service test and checking voltage/continuity at the motor connector.
F.326The hydraulic test of the sensor and the actuator has determined that at least two hydraulic components are not functioning.If the 3-way valve is blocked or disconnected, the hydraulic test detects multiple faults; check the valve movement from the test menu and inspect the connector/wiring harness or replace the assembly if it does not operate.
F.081The boost has failed.The brand documents the 3-way valve as a possible cause when it is defective or blocked; confirm by actuating it in service test and, if it does not switch or consumes without turning, replace the valve/motor and check the wiring.
How do I know if this 3-way valve is for my boiler?
Verify the reference 05740400 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part.
What is it used for?
The 3-way valve diverts the water between the heating circuit and the domestic hot water (DHW) circuit.
Does it provide hot water but not heat the radiators (or vice versa)?
Typical symptom that the valve or its motor is not switching; check the actuator motor and ensure the body is not seized.
Which models is it suitable for?
Part shared by various models (see Compatibility). If your model does not appear, send us a photo of the marking and we will confirm it.
Installation and recommendations
Check if you need the motor, the body, or the complete assembly.
What does refurbished mean and what coverage does it have?
Part removed from a boiler out of service, inspected and tested. Includes 1-year warranty and 14-day return policy. Delivery within 2–4 working days in the EU.

Spare Parts Related Boiler Thema F 23 E

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