How do I know if this ignition transformer is for my boiler?

Verify the reference 87472013580 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 part.

The ignition transformer generates the high voltage for the electrode spark.

Is there no spark or repeated ignition faults?

No spark at the electrode despite having gas.

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 the electrode and the high voltage cable.

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.

What does the fault code EA mean in Junkers?

No ionisation current (flame not detected after ignition attempt). Defective or weak ignition transformer (Zündtrafo): does not generate sufficient spark and flame is not established, resulting in no ionisation current. Verify by performing the continuous ignition test without gas from the service menu (check for spark) and measuring/replacing the transformer to confirm.

RefurbishedJunkers Transformers

Ignition Transformer Junkers Bosch Eurostar ZWE 24 3 Mfad 23 Ref. 87472013580

25 €VAT includedIn stock · 5 units

Ignition transformer: refurbished spare part that generates the high voltage for the spark of the electrodes. Useful if there is no spark or ignition faults are repeated. Compatible with Eurostar ZWE 24-3 MFAD 23, Eurostar ZWE 24-3 MFAD 31, ZC24-1 MFA 23/31 (ref. 87472013580). Includes a one-year warranty and delivery within 2–4 working days in the EU.

Consult via WhatsApp

Not sure if it's your part? Send us a photo of the screen printing via WhatsApp and we'll confirm compatibility before you purchase.

Delivery in 2–4 working days

1-year warranty

14-day return

Technical support

Key Data

Reference: 87472013580
Brand: Junkers
Type of part: Transformers
Available units: 5 units in stock
Status: Refurbished
Warranty: 1 year
Shipping: 2–4 working days (EU)
Return: 14 days

The same part (ref. 87472013580) equips these models. Verified compatibility; check the reference before purchasing.

Junkers / Bosch

Eurostar ZWE 24-3 MFAD 23
Eurostar ZWE 24-3 MFAD 31
ZC24-1 MFA 23/31
ZC28-1 MFA 23/31
ZWC24-1 MFA 23/31
ZWC28-1 MFA 23/31
ZWC28/32-1 MFA 23/31
ZWSE28-3 MFA 23/31
ZWSE28-4 MFA 23/31

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.

Code	What does it mean?	Cause and diagnosis (this part)
EA	There is no ionisation current (flame not detected after ignition attempt).	Defective or weak ignition transformer (Zündtrafo): it does not generate sufficient spark and the flame is not established, so no ionisation current appears. Verify by performing the continuous ignition test without gas from the service menu (check for spark) and measuring/replacing the transformer to confirm.

How do I know if this ignition transformer is for my boiler?: Verify the reference 87472013580 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 part.
What is it used for?: The ignition transformer generates the high voltage for the electrode spark.
Is there no spark or repeated ignition faults?: No spark at the electrode despite having gas.
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 the electrode and the high voltage cable.
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.

Ignition Transformer Junkers Bosch Eurostar ZWE 24 3 Mfad 23 Ref. 87472013580

Key Data

Junkers / Bosch

Spare Parts Related Bosch Eurostar Boiler ZWE 24 3 Mfad 23