Saunier Duval Thelia/Thema 23 Water Shortage Safety Pressure Switch Ref. 05261500
Pressure switch for Saunier Duval boilers from the Themis, Thema, Combitek, Thelia, and Themaplus ranges, according to the compatible models indicated. The part does not have legible markings in the available photos: the manufacturer and component code could not be identified, and there is no confirmed technical data on this unit. Check compatibility with your model before purchasing.
Spare parts related to Saunier Duval Thelia
Saunier Duval boilers compatible with reference 05261500
Pressure switch with reference 05261500. 19 confirmed compatibilities with two independent sources: Combitek C 23 and Combitek C 23 E. Verify the printed reference on your part before purchasing.
Compatibility confirmed
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval Combitek C 23 | Combitek | Confirmed · 2 sources |
| Saunier Duval Combitek C 23 E | Combitek | Confirmed · 2 sources |
| Saunier Duval Combitek F 23 | Combitek | Confirmed · 2 sources |
| Saunier Duval Combitek F 23 E | Combitek | Confirmed · 2 sources |
| Saunier Duval Thelia 23 | Thelia | Confirmed · 2 sources |
| Saunier Duval Thelia 23 E | Thelia | Confirmed · 2 sources |
| Saunier Duval Thelia 623 | Thelia | Confirmed · 2 sources |
| Saunier Duval Thelia 623 E | Thelia | Confirmed · 2 sources |
| Saunier Duval Thelia AS 23 | Thelia | Confirmed · 2 sources |
| Saunier Duval Thema C 23 | Thema | Confirmed · 2 sources |
| Saunier Duval Thema C 23 E | Thema | Confirmed · 2 sources |
| Saunier Duval Thema F 23 | Thema | Confirmed · 2 sources |
| Saunier Duval Thema F 23 E | Thema | Confirmed · 2 sources |
| Saunier Duval Themaplus C 23 E | Themaplus | Confirmed · 2 sources |
| Saunier Duval Themaplus F 23 E | Themaplus | Confirmed · 2 sources |
| Saunier Duval Themis 23 E | Themis | Confirmed · 2 sources |
| Saunier Duval Themis 23 ME | Themis | Confirmed · 2 sources |
| Saunier Duval Themis AS 14 | Themis | Confirmed · 2 sources |
| Saunier Duval Themis AS 23 | Themis | Confirmed · 2 sources |
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. 05261500 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.
- Locate the reference printed on the body of the pressure switch you have installed: it should indicate 05261500.
- Check your boiler model on the nameplate and look for it in the list of compatible models on this page.
- Compare the connections and the body with the original part before installing.
- If you have any doubts, send us a photo of the screen printing via WhatsApp and we'll confirm it for you before you purchase.
Symptoms and faults resolved by pressure switch 05261500
The pressure switch controls the air or water pressure to authorize operation. These are the typical symptoms and what to do:
The boiler turns on, makes an attempt, and shuts off after a few seconds as if something is stopping it.
Cause: The air pressure switch does not detect the minimum depression, and the control unit cuts off ignition before opening the gas valve.
Check that the hose from the pressure switch to the fan is neither loose nor twisted before replacing the part.
A fault code related to air or flue gas evacuation appears on the display.
Cause: The control unit detects that the pressure switch has not changed state within the expected time after the fan starts.
Note the exact code displayed and confirm it in your model's manual before assuming the part is faulty.
If you reset it several times in a row, it sometimes starts without any issues.
Cause: The internal electrical contact of the pressure switch is worn and is making a false contact right at the switching point.
With the boiler disconnected, check that the pressure switch cables are properly connected and that there is no oxidation on the terminals.
The boiler ignites well, runs for a while, and then stops on its own without any apparent reason.
Cause: The pressure switch loses the depression signal once in operation, something that happens if the fan loses revolutions or there is a partial obstruction.
Listen to see if the fan changes sound or loses power just before the boiler shuts down.
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.
Saunier Duval 05261500 pressure switch datasheet
- OEM reference
- 05261500
- Brand
- Saunier Duval
- Type of part
- Pressure switches
- Units in stock
- 5 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- 1-2 business days
- Return
- 14 days
- The silkscreen on the part could not be read: neither the manufacturer nor the component code is listed.
- There is no confirmed technical data for this unit.
- The reference 05261500 listed in the current catalog is not confirmed by the label or external sources; verify it before purchasing.
- Check that your boiler model is on the list of compatible ones before ordering the part.