
Honeywell Gas Valve CE-488MS641 Saunier Duval ThemaClassic F24E Ref. S1071500
Honeywell gas valve CE-488MS641, with reference 4005140804 printed on the part, for Saunier Duval ThemaClassic F24E boilers and compatible models. Powered at 24 VDC with a 6 VA coil, it regulates the flow of natural gas to the burner with a maximum pressure of 60 mbar. It is replaced when the boiler does not ignite, gas does not reach the burner, or the safety shut-off fails.
VAT included
Consult via WhatsAppSaunier Duval boilers compatible with reference S1071500
Gas valve with reference S1071500. 28 verified compatibilities: C24E and C25E.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval C24E | Themafast | Contrasted |
| Saunier Duval C25E | Themafast | Contrasted |
| Saunier Duval C28E | Themafast | Contrasted |
| Saunier Duval C30E | Themafast | Contrasted |
| Saunier Duval F24E | Themafast | Contrasted |
| Saunier Duval F25E | Themafast | Contrasted |
| Saunier Duval F25E H-MOD | Themafast | Contrasted |
| Saunier Duval F30E | Themafast | Contrasted |
| Saunier Duval F30E H-MOD | Themafast | Contrasted |
| Saunier Duval C24E | Themaclassic | Contrasted |
| Saunier Duval C25E | Themaclassic | Contrasted |
| Saunier Duval F24E | Themaclassic | Contrasted |
| Saunier Duval F25E | Themaclassic | Contrasted |
| Saunier Duval F AS 24E | Themaclassic | Contrasted |
| Saunier Duval F AS 25E | Themaclassic | Contrasted |
| Saunier Duval F AS 30E | Themaclassic | Contrasted |
| Saunier Duval C24E | Thematek | Contrasted |
| Saunier Duval F24E | Thematek | Contrasted |
| Saunier Duval F30E H-MOD | Isofast | Contrasted |
| Saunier Duval F35E H-MOD | Isofast | Contrasted |
| Saunier Duval C16E | Opalia | Contrasted |
| Saunier Duval F11E | Opalia | Contrasted |
| Saunier Duval F14E | Opalia | Contrasted |
| Saunier Duval F17E | Opalia | Contrasted |
| Saunier Duval C24E | Thema | Contrasted |
| Saunier Duval C25E | Thema | Contrasted |
| Saunier Duval F24E | Thema | Contrasted |
| Saunier Duval F25E | Thema | 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. S1071500 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 S1071500. 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 S1071500 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 ignite and there is no sign of gas flow.
Cause: The valve does not open and the gas does not reach the burner.
Check if there is voltage reaching the gas valve when the ignition command is given before replacing it.
- 02
There is still a smell of gas, or the meter moves with the boiler turned off.
Cause: If the valve does not close completely, the safety cut-off is not effective and gas may continue to flow with the boiler stopped.
Turn off the main gas valve immediately and ventilate; do not wait to diagnose if you suspect an active leak.
- 03
The boiler displays a gas valve fault code on the screen.
Cause: The control unit detects that the valve is not responding as expected to the open or close command.
Reset the boiler and check if the fault code always repeats at the same point in the ignition sequence.
- 04
The combustion appears yellowish or unstable instead of blue and stable.
Cause: A valve that does not properly regulate the flow of natural gas alters the combustion mixture.
Check the flame sight glass and note the color before changing the gas valve, and also rule out lack of draft or dirt in the burner.
Fault codes from Saunier Duval that this spare part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| F1 | Ignition fault. | The gas block S1071500 does not open or is misaligned and does not provide flow during the spark attempt; check with a manometer at the valve ports (inlet/outlet) and measure voltage/continuity in coils during startup. |
| F.28 | Start-up fault: ignition failed. | Fault in the gas valve assembly (block S1071500) or in its stepper motor prevents opening/modulating the gas during startup; check flow pressure and valve operation (measurement at ports and coil supply) during the ignition attempt. |
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 gas valve S1071500.
- Catalogue reference
- S1071500
- Brand
- Saunier Duval
- Type of part
- Gas 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.
- Manufacturer
- Honeywell
- Code
- CE-488MS641
- Printed reference (Réf.)
- 4005140804 2
- Coil voltage
- 24 VDC
- Coil power
- 6 VA
- Type of gas
- Natural Gas
- Degree of protection
- IP 20
- Maximum pressure
- 60 mbar
- Voltage V1
- 220 Vac (4VA)
- Voltage V2
- 24 Vdc (0VA)
- Group
- Group 1
- Class
- B+B
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Saunier Duval Thematek F24E Manual (PDF)Document © Saunier Duval, provided as a technical reference.











