Baxi Roca DYA43-15 P Circulating Pump · 4507338 For RS 20/20 F

It circulates water through the heating circuit. It is advisable to check it if the radiators remain cold with the boiler on or if the motor hums without moving the water.

Type of part: Baxi Roca
Status: Refurbished
internal SKU: BC2VRRS2020
Warranty: 1 year

VAT included OUT OF STOCK

Compatibility

Compatible Baxi Roca boilers

Baxi Roca. A proven compatibility: Baxi Roca RS 20/20 F. There are 7 other models that we are still verifying.

Proven compatibility

Boiler model	Family	Verification
Baxi Roca RS 20/20 F	Baxi Roca	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.

Roca RS-20 GN	Baxi Roca	Unconfirmed
Roca RS-20 GP	Baxi Roca	Unconfirmed
Roca RSI-20/20 GN	Baxi Roca	Unconfirmed
Roca RSI-20/20 GP	Baxi Roca	Unconfirmed
Baxi Roca RS-20/20 GN and RS-20/20 GP	Baxi Roca	Unconfirmed
Roca RS 20, RS 20/20 and RSI 20/20 (V0 gn and V1 gn)	Baxi Roca	Unconfirmed
Baxi Roca LAURA20-20 and LAURA30-30	Baxi Roca	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 label of the pump: this unit is a Baxi Roca DYA43-15 P with reference 4507338 and the code marked 04/00 - 4507307.
Compare: 230 V · 50 Hz, 60 W in position 1 and 88 W in position 2, 0.38 A and capacitor of 2.6 µF · 400 V.
Confirm on your boiler's label that it is a Baxi Roca RS 20/20 F. If it is another model, also compare the code 122075100 (or the 122075040 from the spare parts list).
It can be confused with the pump set 122075140 (3-way and 2 speeds): compare the number of ways and speeds before ordering it.
Any questions? Send us a photo of your part's label and the boiler's rating plate from Contact.

Diagnosis and fault codes

Symptoms that require diagnosis in the Baxi Roca

Common symptoms and faults

01
Cold radiators with the boiler on
Cause: Check free rotation and voltage.
02
The motor hums but does not move the water.
Cause: The same technical sheet indicates it as a fault signal; it also mentions the seized shaft.
03
Lockouts due to lack of circulation, with temperature errors on the display
Cause: It is mentioned in the same sheet; it does not provide fault codes.

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: Baxi Roca

Uniclima internal SKU: BC2VRRS2020
Brand: Baxi Roca
Type of part: Baxi Roca
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.

Printed commercial reference: 4507338
Marked code: 04/00 - 4507307
Printed barcode: 320095551
Power supply: 1~230V
Frequency: 50Hz
Condenser: 2.6µF - 400V
Thermal class/insulation: F - TF110
Nominal pressure: PN10
Degree of protection: IP42
Power in position 1: 60 W
Power in position 2: 88 W
Intensity: 0.38 A
Conformity marking: CE
Origin: Manufactured in the EU
Source of additional data: Declared information; auxiliary references and applications without equivalent from the accredited manufacturer.
Inventory — Application indicated in inventory: Application indicated on inventory label: Baxi Roca RS 20/20 F
Inventory — Origin: Made in EU
Maximum power: 88 W at 230 V · also
External data (to be confirmed) — Set 122075040 / 122075100: 2-way and 3-speed; the label indicates two power levels (60 W and 88 W) · Spare parts list
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: RS-20 GN · RS-20 GP · RSI-20/20 GN · RSI-20/20 GP

Before purchasing

To confirm: it is usually not advisable to repair the pump: windings and bearings wear out.
To confirm: Baxi Roca RS-20 GN:
Roca RS-20 GP:
To confirm: Baxi Roca RSI-20/20 GN:
To confirm: Baxi Roca RSI-20/20 GP:
Roca RS-20/20 GN and RS-20/20 GP: with a «» without explaining
To confirm: Baxi Roca RS 20, RS 20/20 and RSI 20/20 (V0 gn and V1 gn): (122075100); repeat their list.
To confirm: Baxi Roca LAURA20-20 and LAURA30-30: (122075100) and (its substitute 7803038)
Do not confuse: 122075140 — Circulation pump in a breakdown of the R-20/20F; it is sold as a 3-way and 2-speed set — without additional confirmation, it is linked to the DYA43-15 P; compare ways and speeds before discarding it.
The parts list gives 122075040 and does not mention DYA43-15 P. It states that 122075100 is on the motor label; this unit does not show it. Not confirmed: 4507338 nor 4507307.
To confirm: they connect the DYA43-15 P with the 122075100 and a third one confirms the model and its 88 W. The parts list gives 122075040 without mentioning this pump. The label indicates two power levels; they talk about three speeds.

Documentation

Manuals and technical documentation

Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.

Baxi Roca RS 20/20 F manual (PDF) Document © Baxi Roca, provided as a technical reference.

Frequently Asked Questions

Frequently asked questions: Baxi Roca

How do I know if it's the pump of my boiler?

Check the label on your pump. This unit is a Baxi Roca DYA43-15 P, ref. 4507338, marked code 04/00 - 4507307. Also compare 230 V · 50 Hz, 60 W / 88 W and 0.38 A. Additionally, check the speeds and connector.

Is it compatible with my Baxi Roca RS 20/20 F?

Yes. Confirmation registered: this pump for the Baxi Roca RS 20/20 F. The parts list provides for the RS-20/20F the pump assembly 122075040; and they provide 122075100 for that boiler.

What other boilers are compatible with the DYA43-15 P?

To confirm, with 1 o: and it is provided for the Baxi Roca RS-20 GN, RS-20 GP, RSI-20/20 GN and RSI-20/20 GP; add the RS-20/20 GN and GP and mark their models with «» without explanation. Give the 122075100 for V0 and V1 gn versions of the RS 20, RS 20/20 and RSI 20/20; for the LAURA20-20 and 30-30.

What do the numbers on the pump mean and what is 122075040?

DYA43-15 P is the model; 4507338 is the printed reference; 04/00 - 4507307 is the marked code; 320095551 is the barcode. The 122075100 is the OEM for the DYA43-15 P; the 122075040 is the pump assembly for the RS-20/20F in the parts list; it matches the 122075100.

Is it the same as the pump assembly 122075140?

It is not confirmed. The 122075140 has 3 ways and 2 speeds, while the 122075100 has 2 ways and 3 speeds; a breakdown of the R-20/20F lists it as a circulation pump. The label indicates two power ratings (60 W and 88 W). Compare ways and speeds; if in doubt, send us a photo of the label from Contact.

What symptoms point to this pump and who should install it?

According to a technical sheet for 122075100: cold radiators with the boiler on, motor buzzing without moving the water, noise or vibration, seized shaft after a long stop, and blockages due to lack of circulation. Before replacing it, check that the motor spins freely and receives voltage. Our advice, not from the sheet: have it installed by a qualified technician, as it operates at 230 V.

What is the reference for this pump?

4507338 · DYA43-15 P

What power supply does it need?

230 V at 50 Hz.

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Baxi Roca DYA43-15 P Circulating Pump · 4507338 For RS 20/20 F