Immergas Zeus Maior 24 21 1 Electronic Modulation PCB Ref. 018509
RefurbishedImmergasPCBs (control boards)

Immergas Zeus Maior 24 21 1 Electronic Modulation PCB Ref. 018509

90 €VAT includedIn stock · 2 units

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 up, or the display is unresponsive. Compatible with Zeus 24 Maior, Zeus 21 Maior, Avio 24 Maior (ref. 018509). 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
018509
Brand
Immergas
Type of part
PCBs (control boards)
Available units
2 units in stock
Status
Refurbished
Warranty
1 year
Shipping
2–4 working days (EU)
Return
14 days

The same part (ref. 018509) equips these models. Verified compatibility; check the reference before purchasing.

Zeus Maior

  • Zeus 24 Maior
  • Zeus 21 Maior

Avio Maior

  • Avio 24 Maior
  • Avio 21 Maior

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)
E14Ignition control unit locked (incorrect PCB-control unit connection) / flue pressure switch faultThe modulation PCB 1.018509 can cause E14 if its interface/power supply with the ignition control board fails, leaving the PCB–control board connection "not OK". Check the continuity of the harness, the control output from the PCB to the control board (relay/start command), and ensure voltage is present at ignition; if the command does not come from the PCB, replace 1.018509.
How do I know if this PCB is for my boiler?
Verify the reference 018509 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part. It is a Comelit piece.
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.

Related Spare Parts Boiler Zeus Maior 24 21 1

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