Saunier Duval Gas Valve Ref. 05719900
RefurbishedSaunier DuvalGas valves

Saunier Duval Gas Valve Ref. 05719900

40 €VAT includedIn stock · 5 units

Gas valve: refurbished spare part that regulates and modulates the gas flow to the burner. Useful if there are ignition faults or the flame does not modulate. Compatible with Isofast C 28 E, Isofast C 31 E, Isofast F 28 E (ref. 05719900). Includes a one-year warranty and delivery within 2–4 working days in the EU.

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

Key Data

Reference
05719900
Brand
Saunier Duval
Type of part
Gas valves
Available units
5 units in stock
Status
Refurbished
Warranty
1 year
Shipping
2–4 working days (EU)
Return
14 days

The same part (ref. 05719900) equips these models. Verified compatibility; check the reference before purchasing.

Saunier Duval

  • Isofast C 28 E
  • Isofast C 31 E
  • Isofast F 28 E
  • Isofast F 31 E
  • Isomax C 28 E
  • Isomax F 28 E

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)
15Gas mechanism fault.The stepper motor/gas block module is faulty or gets stuck, and the valve does not open/modulate; check power supply to the modulation coil, continuity, and valve regulation with a manometer on the ramp.
04Ignition fault (flame not detected).The gas valve does not open or is poorly adjusted, and gas does not reach the burner; check that the tap and valve are open, measure 24 V~ at the valve during the ignition attempt, and verify/adjust the gas mechanism with a manometer.
16Flame detection fault: flame present >5 s after shutdown (safety solenoid valve).The gas solenoid valve/valve assembly does not close hermetically or remains stuck, and residual ionisation is detected; check for absence of voltage in the valve after shutdown and its tight closure (leakage test/pressure drop).
How do I know if this gas valve is the one for my boiler?
Verify the reference 05719900 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part. It is a Honeywell piece (VK4105M 2071) - original Saunier Duval gas valve.
What is it used for?
The gas valve regulates and modulates the gas flow to the burner.
Ignition faults, does not modulate, or smells of gas?
It could be the gas valve. IMPORTANT: gas handling ONLY by an authorised technician.
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
Installation and pressure adjustment by authorised technician; mandatory leak check.
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.

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