Saunier Duval Thema NOx F24 Gas Valve - Fault Code V7335A 2398 1
If your boiler does not ignite, shows flame lockouts, or modulates poorly, you may need the gas valve Saunier Duval Thema NOX F24, reference V7335A. This valve regulates and allows the flow of gas to the burner according to the instructions of the PCB. The failure of this part can cause errors such as 15, which indicates a fault in the stepper motor, or 16, which refers to a fault in the gas safety valve. It is compatible with models such as ECOPLUS 24 and themaf24nox, among others. It is recommended to replace it if it shows these symptoms.
VAT included
Consult via WhatsAppSaunier Duval boilers compatible with reference 2000803071
Gas valve with reference 2000803071. Two confirmed compatibilities: ECOPLUS 24 and THEMAF24NOX.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval ECOPLUS 24 | SUPERMICRA | Contrasted |
| Saunier Duval THEMAF24NOX | THEMAF24NOX | 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 the ref. 2000803071 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.
- Find the reference printed on the installed part and check whether it matches the catalogue reference 2000803071. 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 and faults that the gas valve 2000803071 resolves.
The gas valve regulates and modulates the gas flow to the burner. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The boiler does not start the burner even though you can hear it trying.
Cause: The valve is not receiving enough current to open the solenoid, or it has lost strength and does not separate the shutter.
Measure the current reaching the gas valve during the ignition attempt before replacing it; if there is no current, the problem is upstream, in the PCB or the wiring.
- 02
The flame appears irregular, fluctuating in size on its own.
Cause: The modulation stage of the gas valve does not adjust the gas flow properly to the demand of the control board.
Check that the modulation connector is properly fitted and free of corrosion before declaring the valve faulty.
- 03
The display shows a warning or fault code related to gas or ignition.
Cause: The control board detects that the gas valve is not responding as expected and indicates it as a valve or flame fault.
Note the exact code and delete it once to see if it reappears in the next cycle; a specific code does not always confirm the gas valve.
- 04
The boiler does not ignite, especially on very cold days or when the boiler is cold.
Cause: With the gas pressure at the lower limit of the valve's operating range, the solenoid may not fully open.
Check the gas pressure in cold with the manometer before changing the gas valve, especially if the installation is propane gas.
Fault codes from Saunier Duval that this spare part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| 15 | Stepper motor fault (gas valve) | The stepper motor of the gas block does not open/modulate the valve: no gas reaches the burner and the electronics lock. Check the 24 Vdc→12 Vdc supply to the valve and the coil resistance (~116 Ω) and observe the movement of the shutter on demand. |
| 16 | Gas safety valve fault | Fault in the safety solenoid valve of the gas block: it does not open/close correctly and the control detects a defect. Check for the presence of 24 Vdc during ignition, continuity/resistance of the coil, and the tightness of the gas block. |
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 gas valve Saunier Duval 2000803071
- Catalogue reference
- 2000803071
- Brand
- Saunier Duval
- Type of part
- Gas valves
- Units in stock
- 1 unit
- 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.
- Code on label
- V7335A 2398 1
- Maximum operator voltage
- 17 V ==
- Maximum current of the operator
- 250 mA
- Pressure range
- 3...37 mbar
- Pins
- marked 7 and 8
Frequently asked questions about the gas valve 2000803071
Does this valve with code V7335A 2398 1 work for a Saunier Duval Thema F24 NOX?
What is the maximum voltage that the operator of this valve of the Supermicra Ecoplus 24 can handle?
What is the working pressure range of the V7335A valve in the Thema NOX F24?
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