3-Way Valve Junkers Euromaxx ZWC28 1MF2A 23 Without Motor Ref. 8716771303
RefurbishedJunkers3-way valves

3-Way Valve Junkers Euromaxx ZWC28 1MF2A 23 Without Motor Ref. 8716771303

30 €VAT includedIn stock · 1 unit

3-way valve: refurbished spare part that diverts water between heating and domestic hot water. Useful if it provides hot water but does not heat radiators, or vice versa. Compatible with ZWC28-1MF2A, ZWC28-1MFA, ZWC28-1MFK (ref. 8716771303). 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
8716771303
Brand
Junkers
Type of part
3-way valves
Available units
1 unit in stock
Status
Refurbished
Warranty
1 year
Shipping
2–4 working days (EU)
Return
14 days

The same part (ref. 8716771303) equips these models. Verified compatibility; check the reference before purchasing.

Junkers Euromaxx

  • ZWC28-1MF2A
  • ZWC28-1MFA
  • ZWC28-1MFK
  • ZWC24-1MF2A
  • ZWC24-1MFA
  • ZWC24-1MFK
  • ZC28-1MFA
  • ZC24-1MFA

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)
AAExcessive temperature difference between the heating flow circuit and the domestic hot water.If the 3-way valve does not close or closes insufficiently towards heating during a DHW demand (stuck or with poor contact in the motor connector), the DHW NTC does not rise while the flow NTC does, generating a high ΔT. Check in service mode that the valve switches to DHW, inspect the white motor connector, and ensure the cartridge is not seized.
How do I know if this 3-way valve is for my boiler?
Verify the reference 8716771303 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part.
What is it used for?
The 3-way valve diverts the water between the heating circuit and the domestic hot water (DHW) circuit.
Does it provide hot water but not heat the radiators (or vice versa)?
Typical symptom that the valve or its motor is not switching; check the actuator motor and ensure the body is not seized.
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
Check if you need the motor, the body, or the complete assembly.
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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