Wilo HB15/4-1 pump Saunier Duval – Ref. 0020016835

Bomba Wilo HB15/4-1 que mueve el agua de calefacción entre la caldera y los radiadores. Referencia 0020016835; el n.º 4516967 de la etiqueta identifica el modelo HB15/4-1.

Type of part: Saunier Duval
Status: Refurbished
internal SKU: BOM033
Warranty: 1 year

VAT included OUT OF STOCK

Compatibility

Compatible Saunier Duval boilers

Saunier Duval. A proven compatibility: Semia Tek F24. There are 3 other models that we are still verifying.

Proven compatibility

Boiler model	Family	Verification
Saunier Duval Semia Tek F24	Saunier Duval	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.

Saunier Duval Semia Tek C24	Saunier Duval	Unconfirmed
Saunier Duval Semia F24, C24 and V24	Saunier Duval	Unconfirmed
Saunier Duval Themaclassic and Thematek (except C 24 E, F 24 E, and S F 24 E)	Saunier Duval	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 it 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 HB15/4-1 and the number 4516967.
Look for the reference Saunier Duval 0020016835. If your pump has 0020037112, connect it to this same HB15/4-1; if it has 0010030688, it could be the new pump MS/7-50/SCA and it is not available. In both cases, please consult us.
Compare the electrical data: 65 W, 0.28 A, and capacitor of 2 µF.
If they match and your boiler is a Semia Tek F24, call us at 911 17 77 77. Any questions? Send us a photo of your pump's label and your boiler's PCB from the Contact section.

Diagnosis and fault codes

Symptoms that require diagnosis in the Saunier Duval.

Common symptoms and faults

01
The radiators are not heating or take a long time, even though the boiler turns on.
Cause: Check that the pump is running, that the circuit has pressure, and that it is properly bled.
02
The pump makes noise or vibrates.
Cause: Bleed the air from the circuit. If the noise persists, the bearing may be worn out.
03
The pump hums but does not rotate after weeks of being idle.
Cause: The rotor may be stuck due to scale or sludge: a technician can free it before replacing it.
04
Water is leaking from the pump or its seals.
Cause: Dry the area and locate the leak: it could be a gasket or the shaft seal.
05
The boiler locks out or shuts down due to excessive temperature.
Cause: There may be a circulation issue: check the pump, the circuit valves, and the filters.

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

Saunier Duval

Uniclima internal SKU: BOM033
Brand: Saunier Duval
Type of part: Saunier Duval
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.

Commercial reference: 0020016835
Marked number: 4516967
Marked code: 4519731
Marked without interpretation: 08W10
Insulation class: F
Nominal pressure: PN6
Set temperature: TF95
Degree of protection: IP44
Condenser: 2 µF
Power supply: ~230 V, 50 Hz
Current: 0.28 A
Power: 65 W
Conformity marking: CE
Other marked ones: VDE, EMV, GS
Place of manufacture: EU
Source of additional data: Declared information; auxiliary references and applications without equivalent from the accredited manufacturer.
Inventory — Marked code: 4516967; 4519731
Verified data — Pump: Wilo HB15/4-1
Verified data — Wilo No.: 4516967
Verified data — Power: 65 W · 0.28 A
Verified data — Power supply: 230 V · 50 Hz
Verified data — Condenser: 2 µF
Verified data — Protection: IP44 · class F
Verified data — Nominal pressure: PN6 (6 bar)
Verified data — Temperature class: TF96; a previous inventory reading showed TF95. It needs to be read on the label.
Verified data — Marked: CE · VDE · GS · EMV
Verified data — Origin: Made in EU
To confirm — Speeds: To confirm: One
Pending applications to verify: • Semia Tek F24 (almacén): con 0020016835. La HB15/4-1 con código 0020037112 tiene 3, pero nada une ese código con 0020016835. dan además para esta caldera el motor 20087275. • Semia Tek C24: solo con 0020037112. • Semia F24, Semia C24 y Semia V24: (con 0020037112). • Themaclassic, Thematek y Thema F/C 24: (con 0020037112; no separa F y C). • CONFLICTO Themaclassic C 24 E y Thematek S F 24 E: les da la S1005300 (y a la Themaclassic C 24 E, también la Grundfos UP 15-50 AO), no la HB15/4-1. • NO VÁLIDA Thema Condens F24:, y le dan el motor 20087275. Consulta 24/10/2026 · 1 proveedor; pendiente de confirmar: Semia Tek F 24. Declaración comercial para su ficha «Bomba Circuladora Wilo - Saunier Duval (HB15/4-1) [5720700]», no certificación de la unidad. Confirmar referencia OEM, revisión, configuración y variante de equipo antes de usarla.
Registered equivalents and substitutions: Wilo 4516967 = HB15/4-1 FSL 9 SDPR (ficha oficial de Wilo). Wilo recomienda como sustituta la 4533636 (no consultada) y avisa de que sus equivalencias no están necesariamente avaladas por el fabricante de la caldera. La HB15/4-1 de las Semia Tek C 24 y F 24 aparece con otro código Saunier Duval: 0020037112 ( 280.66.0018), sustituido por 0010030688. sin confirmación adicional abierta lo iguala a 0020016835. No confundir con el motor 20087275 / 0020087275 (280.66.0029), que dan para Semia Tek F24 y Thema Condens F 24 E.

Before purchasing

To confirm: Semia Tek C24 — With another code (0020037112): 1 origin; it only says "Semiatek", not counting.
To confirm: Semia F24 (without "Tek"), C24 and V24 — With another code (0020037112): F24; C24 in; V24 only. The list under 0010030688. Without additional confirmation, equate "Semia F24" with "Semia Tek F24".
To confirm: Themaclassic and Thematek (except C 24 E, F 24 E, and S F 24 E) — With another code (0020037112), according to unverified generic, which does not count as origin. It gives the "Thema" with the circulator SD51236.
Not compatible or excluded: Thema Condens F24 and F 24 E — It uses another one: 0020087275
Not compatible or excluded: Themaclassic C 24 E and Thematek S F 24 E — They use another one: S1005300
Not compatible or excluded: Thematek C 24 E and F 24 E — They use a different part, the pump group SDS10057, Saunier Duval.
Do not confuse: 0020087275 — Pump motor provided for the Thema Condens F 24 E and the Semia Tek F24 — Another part, with a different code.
Do not confuse: Wilo 4533636 — Replacement proposed by Wilo for number 4516967 — It is another pump; Wilo warns that the boiler manufacturer does not always endorse its equivalents.
The 0010030688 is questionable: it treats it like the 0020037112; it describes it as another pump (Wilo MS/7-50/SCA).
Registered confirmation: the pump and its compatibility with the Semia Tek F24. Wilo identifies number 4516967 as HB15/4-1; it links 0020016835, 4516967, and HB 15/4-1; and provides 0020037112 for Semia and Sémia Tek boilers. No official document read mentions 0020016835.

Frequently Asked Questions

Frequently asked questions: Saunier Duval

Is it compatible with my Semia Tek F24?

Yes. Confirmation registered: this pump (ref. 0020016835, Wilo HB15/4-1) is also suitable for the Saunier Duval Semia Tek F24. It is also compatible with this boiler with the code 0020037112, which is linked to this same pump. The motor 0020087275 is also suitable for this boiler, which is not the pump. If your boiler is different, please send us a photo of its label and the label of your pump from Contact.

Does it correspond to 0020037112 or 0010030688?

To confirm: The 0020037112 connects to this Wilo HB 15/4-1 (no. 4516967, 65 W, 0020016835) and is marked as discontinued; and it is listed for Semia and Sémia Tek boilers. The 0010030688 is listed as "ex 0020037112," but it is described as another pump, the Wilo MS/7-50/SCA (0020295311), new since 2024. If your pump has a different code, please consult us.

What substitute does Wilo propose?

For reference number 4516967, Wilo proposes 4533636, which is another pump. Wilo warns that its equivalents are not always endorsed by the boiler manufacturer.

Does it include cable and connector?

To confirm: We will confirm it to you before purchasing. Specialized ones, some HB15/4-1 are sold with a bleeder, cable, and connector, while others come without cable or gaskets. It indicates that when switching from the old pump to the new 0010030688, the power cable 0010032758 must be purchased separately.

What do the numbers on the label mean?

0020016835 is the Saunier Duval reference. 4516967 is the Wilo number, which the official Wilo sheet identifies as HB15/4-1 FSL 9 SDPR. 4519731 is another number marked on the label. All three are included in the confirmed data.

Is it compatible with a Semia F24, C24 or V24 without "Tek"?

It is not confirmed. Provide 0020037112 for the Semia F24, C24, and V24 and for the Semia Tek C24 and F24; the list in the F24; list the C24 and F24 under 0010030688. Without additional confirmation, equal them with the Semia Tek F24. Send us a photo of your PCB from Contact.

Is it compatible with a Thematek or a Themaclassic?

To confirm: For the Thematek C 24 E and F 24 E, it doesn't seem so: they use a different part, the SDS10057 pump group, Saunier Duval. The Themaclassic C 24 E and the Thematek S F 24 E use another part, the S1005300.

What model and reference can be read on the PCB?

Wilo HB15/4-1, N°4516967 and reference 0020016835.

What electrical values are verified?

~230 V at 50 Hz, capacitor 2 µF and 0.28 A/65 W; the PCB indicates PN6, IP44, Class F and TF95.

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1-year warranty reviewed and tested

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Wilo HB15/4-1 pump Saunier Duval – Ref. 0020016835