Ariston TH0050 Circulating Pump · 65116908-03 for Clas One 24 and Clas Premium Evo 24 EU
To confirm: Pump with PWM control that moves water through the heat exchanger and the heating circuit. It is suspected that if the radiators do not heat, there is noise, or the boiler gets blocked.
- Type of part
- Ariston
- Status
- Refurbished
- internal SKU
- BOM076
- Warranty
- 1 year
VAT included Stock · 2 units
Compatible Ariston boilers
Ariston. Five confirmed compatibilities: Ariston Clas One 24 and Ariston Clas Premium Evo 24 EU. There are another 8 models that we are still verifying.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Ariston Clas One 24 | Ariston | Contrasted |
| Ariston Clas Premium Evo 24 EU | Ariston | Contrasted |
| Ariston Genus One 24, 30 and 35 · Genus One Net 24 | Ariston | Contrasted |
| Ariston Alteas One Net 24, 30 and 35 · Cares S 24 and 30 · Cares X 24 CF EU · Clas X 24 CF EU · Clas B One 24 and 35 · Cares Premium Ext and In 25 and 30 · Cares Premium 24 EU2 · Pigma Advance 25 | Ariston | Contrasted |
| Ariston Cares One 24 and 30 · E-Combi One 24 | Ariston | 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.
| Ariston Clas One 30 and 35 · Clas One System 18, 24, 30 and 35 | Ariston | Unconfirmed |
|---|---|---|
| Ariston Clas One 38 · Clas Net One 24, 30 and 38 | Ariston | Unconfirmed |
| Ariston Genus One Net 30 and 35 · Genus One System 24, 30 and 35 · Genus One+ Net 24, 30 and 35 · HS Premium 24 EU2 · Mira Advance Link 25 · Pigma Advance 30 and 35 · Cares Premium 30 EU2 | Ariston | Unconfirmed |
| Ariston Clas X 28 CF EU · Cares Premium System 24 EU · Clas One Wifi 24, 30 and 35 | Ariston | Unconfirmed |
| Ariston Urbia Advance Link 25, 30 and 35 · Pigma Ultra 25 and 30 | Ariston | Unconfirmed |
| Ariston Cares S System 24 | Ariston | Unconfirmed |
| Ariston Mira Advance Link 30 and 35 · Mira Advance System 25 and 35 | Ariston | Unconfirmed |
| Ariston Clas One 25 · Clas One System 25 · Clas B One Plus and Max (French models) | Ariston | Unconfirmed |
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 it is the part for your boiler
The part reference, model, and equipment revision must be verified against the manufacturer's documentation.
- Check the label of the pump: it should say type TH0050 and "ES2PK/53-9A-C STEP2".
- Compare the Ariston code 65116908-03 (: no. 604 of the parts list for the Clas One 24, 3301021).
- Do not confuse it with the Wilo 65104319 or the ENER+ 60001947 from other Premium Evo; check TH0050.
- Check the PCB of your boiler: Clas One 24 and Clas Premium Evo 24 EU, confirmed.
- If they match, call us at 911 17 77 77 with the model of your boiler and we will let you know if we have it.
Symptoms that require diagnosis in the Ariston
Common symptoms and faults
- 01
Cold radiators or no heating circulation
Cause: To confirm: They cite it.
- 02
Buzzing, scratching noise or vibrations in the pump
Cause: To confirm: They cite it.
- 03
Overheating, frequent lockouts or shutdowns of the boiler
Cause: To confirm: They cite 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.
Ariston
- Uniclima internal SKU
- BOM076
- Brand
- Ariston
- Type of part
- Ariston
- Units in stock
- 2 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
- ES 2PK/53-9A-C
- Type/model of pump
- TH0050
- Printed identification on the pump
- ES2PK/53-9A-C STEP2
- Power supply
- 325 VDC
- Maximum pressure
- 0.6 MPa
- Maximum power
- 44 W
- Maximum current
- 0.165 A
- Minimum power
- 5 W
- Minimum current
- 0.02 A
- Temperature / TF
- 95
- Energy Efficiency Index (EEI)
- ≤ 0.23 (Part 3)
- Origin
- Made in Italy
- Printed type on the body
- TH0050
- Source of additional data
- Declared information; auxiliary references and applications without equivalent from the accredited manufacturer.
- Inventory — Max power
- 44 W; maximum current: 0.165 A
- Inventory — Min. power.
- 5 W; minimum current: 0.02 A
- Inventory — EEI
- ≤ 0.23 Part 3
- Inventory — Origin
- Made in Italy
- Data of — Type
- Circulator with PWM control, height 5 m («5M PWM TACO») ·
- Data on — Power Supply
- 325 VDC · class H · TF 95 · Minicrafthobby (: 324 VDC)
- Power data
- 5 W min. · 44 W max. ·
- Manufacturer data for the pump
- Taco
- Pending applications to verify
- Registered application: for your product 12332 ("Ariston Boiler Circulating Pump (TH0050)"): Clas One 24. Pending verification with the manufacturer's documentation for the reference and physical variant; this commercial statement does not certify compatibility or interchangeability.
Before purchasing
- To confirm: Ariston Clas One 30 and 35 · Clas One System 18, 24, 30 and 35 — 6 according to the model (some with another name or boiler code); the official Clas One catalog (2018) lists the Wilo 65104319.
- To confirm: Ariston Clas One 38 · Clas Net One 24, 30 and 38 — each one: and (the last two can be a single source). Clas One 38: boiler code 3301045 in one, 3301023 in two (others refer to Clas One 35)
- To confirm: Ariston Genus One Net 30 and 35 · Genus One System 24, 30 and 35 · Genus One+ Net 24, 30 and 35 · HS Premium 24 EU2 · Mira Advance Link 25 · Pigma Advance 30 and 35 · Cares Premium 30 EU2 — each read
- Ariston Clas X 28 CF EU · Cares Premium System 24 EU · Clas One Wifi 24, 30 and 35: (translate its technical sheet: would count 1) and (Clas One Wifi: )
- To confirm: Ariston Urbia Advance Link 25, 30 and 35 · Pigma Ultra 25 and 30 — 1 origin: and
- To confirm: Ariston Cares S System 24; another page copy
- To confirm: Ariston Mira Advance Link 30 and 35 · Mira Advance System 25 and 35 — read; another copy; the lists, and they are cut off before.
- To confirm: Ariston Clas One 25 · Clas One System 25 · Clas B One Plus and Max (French models) — (they can copy the same catalog: it would count as 1)
- Not compatible or excluded by origin: Ariston Clas Premium Evo System 24 EU · Clas Premium Evo IN 25 EU · EXT 25 EU — Their parts list includes the ENER+ 60001947 (-02 in the System)
- Do not confuse: 65104319 — Wilo 5M 2V pump from the official catalog of the Clas One 24 (3301017, pos. 0604) — Another pump: it is not the Taco TH0050.
- Do not confuse: 60001947 — 5M PWM ENER+ pump from the Evo System 24 EU and IN/EXT 25 — Another pump: it is not the TH0050.
- The code for the Clas One 24 varies according to (3301017, 3301021, 3301043): do not use it to identify the pump.
- Verified: the breakdown of (Clas One 24) and they connect the 65116908-03 with the 5M PWM Taco (TH0050). The official Clas One catalog (2018) lists another one, the Wilo 65104319, for the 3301017.
Frequently asked questions: Ariston
Where is the code for this pump and what do TH0050, ES2PK/53-9A-C, and 65116908-03 mean?
In the body of the pump: type TH0050 and identification "ES2PK/53-9A-C STEP2". 65116908-03 is the Ariston code for the "5M PWM TACO": it is placed next to TH0050 and ES 2PK/53-9A-C.
Is it compatible with my Ariston Clas One 24 or Clas Premium Evo 24 EU?
Yes. Confirmation registered: this pump for the Clas One 24 and the Clas Premium Evo 24 EU. The Clas One 24 also comes with the 65116908-03 in the breakdown of (no. 604) and.
Why does an official Clas One catalog list a different pump?
Registered confirmation: this pump for the Clas One 24. The official Ariston catalog for the Clas One lists the Wilo 65104319 for code 3301017 in position 0604; the breakdown for 3301021 lists the Taco 65116908-03. Compare with the marking TH0050.
What is the difference between 65116908-03, -02, and -01?
They indicate that 65116908-03 replaces -01 and also -02. None mention if the characteristics change; compare TH0050.
What other Ariston boilers use this pump?
In addition to the confirmed ones, from 3 to the ones given for Genus One 24, 30, and 35 and Genus One Net 24, and from 3 to 7 for Alteas One Net, Cares S, Cares X 24 CF EU, and Clas X 24 CF EU. Genus One Net 30 and 35, Genus One System, and Genus One+ Net: read, to be confirmed.
What symptoms point to this pump?
To confirm: they mention, in a faulty pump: cold radiators, overheating, blockages, buzzing, and vibrations.
Who should install it?
A qualified technician: it is powered by 325 VDC according to its label and is in the water circuit.
Ariston TH0050 Circulating Pump · 65116908-03 for Clas One 24 and Clas Premium Evo 24 EU