Junkers Circulating Pump ZWC 28 3 MFK 31 Ref. 8716010880
RefurbishedJunkersPumps

Junkers Circulating Pump ZWC 28 3 MFK 31 Ref. 8716010880

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 ZWN24-7MFA23S2800, ZWN24-7MFA31S2800, ZSC24-3MFA23S3700 (ref. 8716010880). 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
8716010880
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. 8716010880) equips these models. Verified compatibility; check the reference before purchasing.

Cerastar (ZWN24-7)

  • ZWN24-7MFA23S2800
  • ZWN24-7MFA31S2800

Ceraclass (ZSC24-3 / ZWC24-3)

  • ZSC24-3MFA23S3700
  • ZSC24-3MFA31S3700
  • ZSC24-3MFK23S3792
  • ZSC24-3MFK31S3792
  • ZWC24/28-3MFA23S3700
  • ZWC24/28-3MFA31S3700
  • ZWC24/28-3MFK23S3792
  • ZWC24/28-3MFK31S3792

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)
E9Thermal block or flue gas temperature limiter triggered (overheating).If the circulating pump is blocked/faulty, there is no flow, the water in the heat exchanger overheats, and the limiter is activated, displaying E9. Verify by activating heating and checking that the pump rotates and delivers flow (∆T supply/return and consumption/voltage at terminals), bleeding the system if necessary.
d4Overtemperature: the difference/gradient between flow and return exceeds the permitted limit (heating).A pump that does not circulate or has insufficient flow causes the flow temperature to rise very quickly compared to the return, and the control generates d4. Check for abnormal ∆T and test the pump (voltage at terminals, rotation/unblocking, and bleed), as well as the bypass.
How do I know if this circulating pump is the one for my boiler?
Verify the reference 8716010880 printed and ensure your model is on the list of compatibles; 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 ZWC 28 3 MFK 31

Scroll to the top