Junkers PCB ZWC24 1MF2A 31 S2800 3500 Ref. 87483004490
RefurbishedJunkersPCBs (control boards)

Junkers PCB ZWC24 1MF2A 31 S2800 3500 Ref. 87483004490

100 €VAT includedIn stock · 1 unit

PCB (control board): refurbished spare part that controls the ignition, modulation, and safety features of the boiler. Useful if the boiler does not ignite, locks out, or the display is unresponsive. Compatible with ZWC24-1MF2A23, ZWC24-1MF2A31, ZWC24-1MFA23 (ref. 87483004490). 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
87483004490
Brand
Junkers
Type of part
PCBs (control boards)
Available units
1 unit in stock
Status
Refurbished
Warranty
1 year
Shipping
2–4 working days (EU)
Return
14 days

The same part (ref. 87483004490) equips these models. Verified compatibility; check the reference before purchasing.

Euromaxx ZWC24

  • ZWC24-1MF2A23
  • ZWC24-1MF2A31
  • ZWC24-1MFA23
  • ZWC24-1MFA31
  • ZWC24-1MFK23
  • ZWC24-1MFK31

Euromaxx ZWC28

  • ZWC28-1MF2A23
  • ZWC28-1MF2A31
  • ZWC28-1MFA23
  • ZWC28-1MFA31
  • ZWC28-1MFK23
  • ZWC28-1MFK31

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)
F0Internal fault/PCB fault.Internal fault of the Heatronic PCB or the bus; the electronics themselves report the anomaly. Check the voltages and connectors of the PCB, and if the F0 reappears after reset and service tests, replace the PCB.
A8Communication interrupted between the CAN bus module and the control board.The loss of CAN communication may be due to a fault in the 24 V/Heatronic PCB (main electronics) or its connector. Check the wiring and BUS module; if the issue persists, replace the PCB (24 V/Heatronic).
E9The STB has been activated.It may be triggered by a lack of circulation if the 24 V fuse on the PCB is open (no power to pump/elements), causing overheating. Check the continuity of the fuse on the PCB and restore power before further testing.
How do I know if this PCB is for my boiler?
Verify the reference 87483004490 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part. It is a Junkers/Bosch (OEM) part.
What is it used for?
The PCB controls the ignition, modulation, sensor readings, and safety features of the boiler.
Is the boiler not igniting, locking out, or is the control board unresponsive?
After ruling out mains voltage, fuse, and connectors, a damaged PCB causes lockouts, blackouts, or erratic display. Repair the external cause before installing the new one.
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
After installation, a technician must adjust the service parameters (type of gas, power settings) and check combustion and safety features.
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 ZWC24 1MF2A 31 S2800 3500

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