Grundfos Circulating Pump UPS15-50 V4 CIAO Fagor FE25NOX-1N Ref. 59725008
Grundfos UPS15-50 V4 CIAO circulator pump installed in Fagor FE25NOX-1N, RKA-25 EKOFLUX, RMAS-24 E MAXICOMFORT, and RSF21E NOX boilers. It moves the water in the heating circuit and has three selectable speeds. Replacement requires first confirming the fault of the part through technical diagnosis, even when it does not start, makes noise, gets blocked, or stops circulating hot water through the installation.
- Type of part
- Pumps
- Status
- Refurbished
- Catalogue reference
- 59725008
- Warranty
- 1 year
Fagor boilers compatible with reference 59725008
Circulating pump with reference 59725008. Seven confirmed compatibilities: Ciao 24 CSI and Ciao 28 CSI.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Fagor Ciao 24 CSI | Beretta CIAO | Contrasted |
| Fagor Ciao 28 CSI | Beretta CIAO | Contrasted |
| Fagor Ciao CSI | Beretta CIAO | Contrasted |
| Fagor Ciao N | Beretta CIAO | Contrasted |
| Fagor Ciao | Ferroli CIAO | Contrasted |
| Fagor Ciao N | Ferroli CIAO | Contrasted |
| Fagor Ciao E | Ferroli CIAO | 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. 59725008 is the part for your boiler
The part reference, model, and equipment revision must be verified against the manufacturer's documentation.
- Find the reference printed on the installed part and check whether it matches the catalogue reference 59725008. 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 that require diagnosis in the circulation pump 59725008
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, nor can it be heard running when the heating demands heat.
Cause: It may not be receiving power, the winding may be damaged, or the rotor may be stuck.
Check if there is power at the pump connector and that the speed selector is in a valid position.
- 02
The pump makes noise or vibrates when operating.
Cause: This is usually due to air in the circuit or a worn bearing.
Bleed the heating circuit from the highest point of the installation before considering the pump as faulty.
- 03
The heating is not warming up even though the burner ignites normally.
Cause: The heat remains in the boiler because the pump does not circulate the water through the radiators.
Compare if the radiators that are farther away are cold while the ones closer to the boiler are heating.
- 04
The rotor gets stuck after a long shutdown, like at the end of summer.
Cause: Sediments accumulate on the shaft when the pump has not been running for a while.
With the boiler cold, try to manually free the shaft using the central screw before purchasing a new pump.
- 05
There is a water leak from the pump shaft.
Cause: The mechanical seal that seals the shaft has lost its tightness with use.
Check that the leak is coming from the pump body and not from a nearby fitting or seal before replacing it.
Fagor fault codes that require diagnosis
| Code | Fault | Technical checks |
|---|---|---|
| A03 | Overtemperature protection activation. | If the UPS15-50 circulating pump does not circulate flow (seized, without power, or with air), the primary does not dissipate heat and the boiler goes into overtemperature. Check by powering/unblocking the pump and verifying circulation/ΔT flow-return. |
| F43 | Activation of the heat exchanger protection (lack of circulation/air). | A circulation pump without performance causes a lack of flow through the primary, and the electronics protect the heat exchanger. Check the voltage and rotation of the pump rotor and bleed the system to restore circulation. |
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 Fagor 59725008 circulation pump.
- Catalogue reference
- 59725008
- Uniclima internal SKU
- BCFE25NOX
- Brand
- Fagor
- Type of part
- Pumps
- Units in stock
- 5 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- Return
- 14 days
Part data and available documentation
Contrast the label codes, PCB, and revision with the installed part; they are not necessarily equivalent references.
- Type
- UPS15-50 V4 CIAO
- Nominal voltage
- 230V~
- Frequency
- 50Hz
- Condenser
- 2.5 µF
- Protection rating
- IP 42
- Thermal class
- TF 95 / Class H
- Maximum pressure
- Max. 0.3 MPa
- Current and power (3 speeds)
- 0.21A/50W - 0.25A/55W - 0.29A/65W
- Factory code and batch
- PC:0940RAD / 24052LA
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Fagor Ferroli CIAO Ciao E manual (PDF) Document © Fagor, provided as a technical reference.
Frequently asked questions about the circulator pump 59725008
Is the pump in the Fagor FE25NOX-1N an original Grundfos?
Is this pump suitable for the RKA-25 EKOFLUX?
How many speeds does the pump of the RMAS-24 E MAXICOMFORT have?
What reference should be given when ordering the pump for the RSF21E NOX?
When should the pump of the Fagor FE25NOX-1N be replaced?
