Saunier Duval Thema NOx F 24 Circulating Pump Ref. H150100109
The Saunier Duval Thema NOX F 24 circulator pump, with reference H150100109, is responsible for moving water through the heating circuit of your boiler. If it malfunctions, you will notice cold radiators, strange noises, overheating, or blockages due to lack of circulation. This model is compatible with the Thema range, specifically the NOx F24. It is recommended to replace it when these symptoms are detected or when the fault code F.75 appears, indicating a lack of water in the pump.
VAT included
Consult via WhatsAppSaunier Duval boilers compatible with reference H150100109
Circulating pump with reference H150100109. A proven compatibility: NOx F24.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval NOx F24 | 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 the reference H150100109 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 H150100109. 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 circulation pump H150100109 resolves.
The circulation pump circulates the water in the heating circuit. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The pump does not start or turn, even though the boiler requests heating.
Cause: The rotor is locked and the motor cannot move it.
Try to manually unlock the shaft from the rear slot before replacing the pump.
- 02
Noise or vibration when starting up
Cause: There is air inside the pump or the rotor is rubbing while rotating.
Bleed the air using the front screw and see if the noise disappears.
- 03
The heating is not working because the water is not circulating.
Cause: Without pumping, the hot water remains in the boiler and does not reach the radiators.
Make sure that the radiator and circuit valves are open before blaming the pump.
- 04
Water is leaking from the body of the pump.
Cause: The shaft seal has lost tightness with use.
Check if the leak is coming from the shaft or a nearby gasket; sometimes it can be fixed by tightening without having to replace the entire pump.
Fault codes from Saunier Duval that this spare part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| F.23 | The boiler shuts down for safety: the temperature changes too quickly. | The circulation pump may be blocked or not functioning properly, which prevents the water from circulating and causes strange temperature differences. Check if the pump starts and consumes power, and measure the temperature difference between the supply and return after bleeding the system. |
| F.24 | The boiler shuts down for safety: the temperature rises too quickly. | If the pump does not move the water (because it is blocked or does not have enough power), the system heats up very quickly. Check if the pump starts and consumes energy during a test, and make sure there is no air in the circuit. |
| F.75 | Fault in the pump: lack of water. | At startup, the increase in pressure that the pump should generate is not detected, possibly because it is defective, blocked, or running dry. Check for an increase in pressure when starting, test the pump directly, and inspect the pressure sensor. |
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 H150100109 circulator pump.
- Catalogue reference
- H150100109
- Brand
- Saunier Duval
- Type of part
- Pumps
- Units in stock
- 3 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- 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.
- voltage
- 80N
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Saunier Duval Thema NOX Manual (User) (PDF)Official user instructions for the Saunier Duval Thema NOX range (F25 edition), in Spanish. Document provided by Uniclima as a technical reference.
Frequently asked questions about the circulator pump H150100109
When should the circulation pump of the Thema NOx F24 be replaced?
Spare parts related to Saunier Duval Thema
