Junkers Euroline Circulating Pump ZW 23-1 AE23 Ref. 8707204042
RefurbishedJunkersPumps

Junkers Euroline Circulating Pump ZW 23-1 AE23 Ref. 8707204042

50 €VAT includedIn stock · 1 unit

Circulating pump: refurbished spare part that circulates water in the heating circuit. Useful if there is noise, water is not circulating, or radiators do not heat evenly. Compatible with ZW231AE23S3705, ZW231AE31S3705, ZW23-1 AE23 (ref. 8707204042). Includes a one-year warranty and delivery within 2–4 working days in the EU.

1
Consult via WhatsApp
Delivery in 2–4 working days
1-year warranty
14-day return
Technical support

Key Data

Reference
8707204042
Brand
Junkers
Type of part
Pumps
Available units
1 unit in stock
Status
Refurbished
Warranty
1 year
Shipping
2–4 working days (EU)
Return
14 days

The same part (ref. 8707204042) equips these models. Verified compatibility; check the reference before purchasing.

Junkers Euroline ZW 23-1 AE

  • ZW231AE23S3705
  • ZW231AE31S3705
  • ZW23-1 AE23

Junkers Ceraclass ZW 24 AE

  • ZW24AE23S2805
  • ZW24AE31S2805
  • ZW24KE23S2895
  • ZW24-1 AE23

Junkers ZW/ZS 24-1 (NW241/ZS231)

  • NW241ELHAE23S28
  • ZW241ELHAE23S28
  • ZS231AE23S3705

Fault codes related to this part (not the entire boiler). They usually have more possible causes: first rule out electrodes, wiring/connections, and gas supply. Verified with ≥3 sources.

CodeWhat does it mean?Cause and diagnosis (this part)
The reset button flashes 2 times per second (2 Hz), and the 45 °C indicator light also flashes.The temperature limiter sensor has detected an overheating.A seized/faulty circulating pump prevents the circulation of the primary, the flow temperature rises, and the limiter activates. Check by unlocking the shaft from the front screw of the pump and verifying that there is circulation and electrical consumption of the pump.
How do I know if this circulating pump is the one for my boiler?
Verify the reference 8707204042 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part. It is a Grundfos piece.
What is it used for?
The circulating pump circulates the water through the heating circuit.
Noise, water not circulating, or cold radiators?
Typical symptoms: humming, seized rotor after a long stop, or radiators that do not heat evenly.
Which models is it suitable for?
Part shared by various models (see Compatibility). If your model does not appear, send us a photo of the marking and we will confirm it.
Installation and recommendations
Bleed the air from the circuit and the pump; check the pressure at 1–1.5 bar with the boiler cold.
What does refurbished mean and what coverage does it have?
Part removed from a boiler out of service, inspected and tested. Includes 1-year warranty and 14-day return policy. Delivery within 2–4 working days in the EU.

Spare Parts Related Boiler Euroline ZW 23-1 AE23

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