Wilo RS15/5-3 O Circulating Pump · 4511685 for Fagor FE-24 EN and CE-24 EN

It circulates hot water through the radiators. It is suspected if the radiators remain cold with the boiler on, if there are noises or vibrations, or if the rotor gets stuck after long summer shutdowns.

Type of part: Pumps
Status: Refurbished
Catalogue reference: 4511685
Warranty: 1 year

VAT included OUT OF STOCK

Compatibility

Wilo boilers compatible with reference 4511685

Circulating pump with reference 4511685. Two confirmed compatibilities: Fagor FE-24 EN and Fagor CE-24 EN. There are three other models that we are still verifying.

Proven compatibility

Boiler model	Family	Verification
Wilo Fagor FE-24 EN	Wilo	Contrasted
Wilo Fagor CE-24 EN	Wilo	Contrasted

Models pending verification

These models are associated with this reference, but we have not finished verifying them yet, so we do not consider them compatibleIf your boiler is one of them, send us a photo of the part you are going to replace and we will verify it before you purchase.

Wilo Fagor Super Compact FE 24 E	Wilo	Unconfirmed
Wilo Fagor Contract Mini CE 24 E	Wilo	Unconfirmed
Wilo Fagor Eco Mini FEB 24 AR	Wilo	Unconfirmed

Can't see your model or have questions? The printed reference takes precedence. How to check it · Send us a photo via WhatsApp.

Guide

How to check if ref. 4511685 is the part for your boiler

The part reference, model, and equipment revision must be verified against the manufacturer's documentation.

Look at the motor label: it should say Wilo RS15/5-3 or the code 4511685 (in our unit, 4513777 is also listed).
Compare the voltage and speeds: 230 V · 50 Hz, three speeds (1600 / 2000 / 2200 min⁻¹) and capacitor of 2.6 µF · 400 VDB.
Don't confuse it with other Wilo models from the RS series, such as the RS 15/6: they have a different designation.
Check on the PCB of your boiler that it is a Fagor FE-24 EN or CE-24 EN. If it is a FE 24 E without N, compare the designation of your pump first.
If they match, call us at 911 17 77 77 with your boiler model and we will reserve it for you.

Diagnosis and fault codes

Symptoms that require diagnosis in the circulator pump 4511685

The circulation pump circulates the water in the heating circuit. These are the typical symptoms and what to do:

Common symptoms and faults

01
Cold radiators with the boiler on
Cause: it is associated with the pump RS15/5-3 in the FE24E technical sheet.
02
Strange noises or vibrations while operating
Cause: it includes it among the faults in its technical sheet.
03
Stuck rotor after long summer shutdowns
Cause: it includes it among the faults in its technical sheet; check the diagnostic note.
04
Small water leaks in the pump body
Cause: it includes it among the faults in its technical sheet.
05
Boiler lockout due to lack of circulation
Cause: it includes it among the faults in its technical sheet, as a general lock due to lack of circulation in the circuit.
06
The boiler locks with fault code F03: the circuit pressure drops below 0.6 bar or rises above 2.8 bar.
Cause: Circuit pressure out of range: low water, air in the circuit, or excess pressure.
Check the pressure on the display (it should be above 1 bar). If it happens again, have a technician check it.
07
F4 appears: the boiler locks due to overheating and the water circulates poorly.
Cause: Lack of water circulation due to air, low pressure, or a weak pump.
Bleed the air from the radiators and check the pressure. If the warning returns, have a technician check the pump.
08
The boiler locks and displays F3/F03: heating pressure out of range.
Cause: Lack of water, excess pressure, leak, or faulty pressure sensor.
Check the cold pressure with the manometer and adjust it according to the manual. If it returns, have a technician check it.
09
The boiler stops due to overheating (F4 or F7).
Cause: Poor circulation, air in the system, worn-out pump, or faulty sensor.
Check the bleed and the pressure. If it repeats, have a technician check it.
10
When turned on, the pump operates in cycles and the heating does not heat.
Cause: Insufficient water flow in the circuit: air, low pressure, or pump without flow.
Bleed the radiators and fill the circuit to 1 bar. If it continues, have a technician check it.

Wilo fault codes that require diagnosis

Code	Fault	Technical checks
F4	Safety thermostat cut-off due to overheating.	Check the pressure, bleed it, and ensure that the pump is circulating the water. If the pump is not circulating properly, point to the pump. Have a technician check it.
F3 / F03	Heating circuit pressure out of range: the boiler locks out.	Check the cold pressure with the manometer and adjust it according to the manual. If it happens again, have a technician check it.
F23	Circulation anomaly, parameters or sensors.	Bleed, check the pressure, and request a diagnosis if it returns. It may indicate a pump with low power.
F3	Heating circuit pressure out of range, or lack of water flow when turning on the boiler.	Check the pump if the pressure is correct and water is not circulating. Check the pressure and bleed the radiators. If the issue persists, have a technician check it.

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.

Technical data

Technical sheet: Wilo 4511685

Catalogue reference: 4511685
Uniclima internal SKU: BOM011
Brand: Wilo
Type of part: Pumps
Units in stock: 0 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.

Power supply: 230 V; 50 Hz
Marked capacitor: 2.6 uF; 400 VDB
P1 speeds I/II/III: 42/60/84 W
Current I/II/III: 0.18/0.27/0.37 A
Speed I/II/III: 1600/2000/2200 min-1
Protection: PN6; IP44; Class F; TF95
Inventory — Type of spare part: Pumps
Inventory — Condenser: 2.6 μF; 400 VDB
Inventory — Application indicated in inventory: FE-24 EN CE-24 EN
Additional data — Function: The heating water circulates.
Additional information — Power supply: 230 V
Additional data — Speeds: 3 · 1600 / 2000 / 2200 min⁻¹ ·
Additional data — Pressure and protection: PN6 · IP44 ·
Identification — Marked designation: RS15/5-3 or
Identification — Marked code: 4511685
Identification — Marked code: 4513777
Technical sheet: Power supply: 230 V; 50 Hz
Technical sheet: Marked capacitor: 2.6 uF; 400 VDB
P1 speeds I/II/III: 42/60/84 W
Technical sheet: Current I/II/III: 0.18/0.27/0.37 A
Speed I/II/III: 1600/2000/2200 min-1
Technical sheet: Protection: PN6; IP44; Class F; TF95
Inventory data — Type of spare part: Pumps
Inventory data — Condenser: 2.6 μF; 400 VDB
Inventory data — Application indicated in inventory: FE-24 EN
Inventory data — Application indicated in inventory: CE-24 EN
Pending applications to verify: Statements from (documentation 23/10/2026; revision 24/10/2026), pending confirmation by the manufacturer. Check reference, revision, and serial number before use: FAGOR SUPER COMPACT FE 24 E · FAGOR CONTRACT MINI CE 24 E · FAGOR ECO MINI FEB 24 AR This offer is limited to the motor; it does not certify the compatibility of the hydraulic assembly.

Before purchasing

sometimes the shaft can be turned by hand after removing the central plug if it has become stuck.
To confirm: Fagor Super Compact FE 24 E — with 4511685 and with RS15/5-3
To confirm: Fagor Contract Mini CE 24 E — 1 origin: (4511685)
To confirm: Fagor Eco Mini FEB 24 AR — 1 origin: (4511685)
Do not confuse: RS 15/6 — Wilo Pump RS 15/6 SLO, which a spare parts list shows for the FE 24 E — Another designation of the RS series: it is not the RS15/5-3 or
Without confirmation: AS0015925 with 4511685: always compare the full designation and the label code.
To confirm: Code 4511685 linked to the Wilo RS15/5-3 pump. No official breakdown. Discrepancy in the FE 24 E: one list shows the RS 15/6 SLO and the RS15/5-3. Confirms FE-24 EN and CE-24 EN.

Frequently Asked Questions

Frequently asked questions about the circulator pump 4511685

Where is the code for this pump and what else should I compare?

On the motor label: the designation RS15/5-3 or the codes 4511685 and 4513777. Also compare the voltage (230 V · 50 Hz), the three speeds (1600 / 2000 / 2200 min⁻¹), and the capacitor (2.6 µF · 400 VDB). Indicate that the reference is on the motor label, next to the voltage and power.

Is it compatible with my Fagor FE-24 EN or CE-24 EN?

Yes. Confirmed: for the Fagor FE-24 EN and for the CE-24 EN. Additionally, they list the CE-24EN with the RS15/5-3, and also the "fe-24e n".

Is it compatible with a Fagor FE 24 E without N or a Contract Mini CE 24 E?

It is not confirmed. They provide 4511685 for the FE 24 E; it is also given for the Contract Mini CE 24 E and the Eco Mini FEB 24 AR. A spare parts list for the FE 24 E shows another pump, the Wilo RS 15/6 SLO. Compare the designation or send us a photo of the label from Contact.

What do 4511685, 4513777, AS0015925, and MU0500117 mean?

4511685 is the manufacturer number for a "Wilo Pump Head PN6 IP44". RS15/5-3 is the model (Typ). The 4513777 is also marked on the part, but we have not seen it without additional external confirmation. AS0015925 is the original code for the pump of the FE24E. MU0500117 appears alongside 4511685, without specifying what it is.

Is RS15/5-3 the same as RS15/5-3 or?

they mix it up: and write "RS15/5-3" with 4511685, and write "RS15/5-3 o" with 4511685. Compare the code 4511685 and the full designation on the label, with the final "o".

What symptoms point to this pump?

In the technical sheet of the RS15/5-3, mention cold radiators with the boiler on, noises or vibrations, stuck rotor after long summer shutdowns, small leaks in the pump body, and boiler lockout due to lack of circulation.

Who should install it and what needs to be checked?

To confirm: We recommend that a qualified technician install it: it operates at 230 V and is part of the heating circuit. Pay attention to the number of speeds (this one has three) and the type of electrical connector, as advised. It is recommended to check the reference and connections before purchasing.

What is the reference for this pump?

4511685 · RS15/5-3 o

What power supply does it need?

230 V at 50 Hz.

Entrega calculada por destino Delivery time shown at checkout

1-year warranty reviewed and tested

14-day return uninstalled parts

Technical support we verify your model

Wilo RS15/5-3 O Circulating Pump · 4511685 for Fagor FE-24 EN and CE-24 EN