Junkers Cerapur Comfort Circulating Pump ZWBC 30-2 C23 Ref. 8716106850
RefurbishedJunkersPumps

Junkers Cerapur Comfort Circulating Pump ZWBC 30-2 C23 Ref. 8716106850

60 €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 ZWBC24-2C23, ZWBC24-2C31, ZWBC25-2C23 (ref. 8716106850). 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
8716106850
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. 8716106850) equips these models. Verified compatibility; check the reference before purchasing.

Junkers/Bosch Cerapur Comfort (ZWBC series 2)

  • ZWBC24-2C23
  • ZWBC24-2C31
  • ZWBC25-2C23
  • ZWBC25-2C31
  • ZWBC28-2C23
  • ZWBC28-2C31
  • ZWBC30-2C23
  • ZWBC30-2C31

Junkers ZWN

  • ZWN25-8MFA

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)
A1Pump blocked or running with air.If the circulating pump (8716106850) is seized or cavitating, there is no flow and the Heatronic displays A1; check pressure 1–1.5 bar, bleed and activate pump test to confirm it rotates and consumes.
E9Overheating: temperature limiter activated (STB/safety).A pump fault (blocked or not rotating) reduces the flow rate and the thermal block overheats; check pressure, bleed, and confirm pump start-up/vibration with a service test.
How do I know if this circulating pump is the one for my boiler?
Verify the reference 8716106850 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.

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