Ignition Transformer Hahn V19800 - Junkers Bosch ZWE24-3MFAD23 - Ref. 87472013580
Ignition transformer for Junkers/Bosch boilers from the Eurostar, Ceramax, Cerastar ranges, and similar models. The actual manufacturer is Hahn (model V19800), although Bosch uses its own OEM reference 87472013580. It delivers two secondary outputs (25V 34VA and 9V 4.5VA) for the ignition system. It is replaced when the boiler does not ignite or the electrode stops generating a spark.
VAT included
Consult via WhatsAppJunkers boilers compatible with reference 87472013580
Ignition transformer with reference 87472013580. Nine verified compatibilities: Eurostar ZWE 24-3 MFAD 23 and Eurostar ZWE 24-3 MFAD 31.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Junkers Eurostar ZWE 24-3 MFAD 23 | Junkers / Bosch | Contrasted |
| Junkers Eurostar ZWE 24-3 MFAD 31 | Junkers / Bosch | Contrasted |
| Junkers ZC24-1 MFA 23/31 | Junkers / Bosch | Contrasted |
| Junkers ZC28-1 MFA 23/31 | Junkers / Bosch | Contrasted |
| Junkers ZWC24-1 MFA 23/31 | Junkers / Bosch | Contrasted |
| Junkers ZWC28-1 MFA 23/31 | Junkers / Bosch | Contrasted |
| Junkers ZWC28/32-1 MFA 23/31 | Junkers / Bosch | Contrasted |
| Junkers ZWSE28-3 MFA 23/31 | Junkers / Bosch | Contrasted |
| Junkers ZWSE28-4 MFA 23/31 | Junkers / Bosch | Contrasted |
Can't see your model or have questions? The printed reference takes precedence. How to check it · Send us a photo via WhatsApp.
How to check if ref. 87472013580 is the part for your boiler
What determines it is not the boiler model, but the reference printed on the part you already have installed.
- Find the reference printed on the installed part and check whether it matches the catalogue reference 87472013580. If it is not visible, do not identify the part from its shape alone.
- Check the full boiler model on its data plate and look for it in the model associations on this page.
- Compare the connections and physical body with the original part before installation.
- If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.
Symptoms and faults that the ignition transformer 87472013580 resolves.
The ignition transformer generates the high voltage for the spark of the electrodes. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The boiler does not ignite the burner and gets locked on the first attempt.
Cause: The transformer does not deliver the necessary current for the electrode to generate the ignition spark.
Check the electrode and its high voltage cable: a crack in the ceramic or a damaged cable can cause the spark to be lost before reaching the burner.
- 02
There is no visible spark at the electrode when the boiler attempts to start.
Cause: If there are two different secondary circuits supplying the ignition system, a fault in either of them leaves the electrode without the necessary current.
Check that the connections from the transformer to the PCB are secure and free of corrosion before replacing the part.
- 03
The ignition fails repeatedly: it tries several times and sometimes does not ignite.
Cause: A damaged winding delivers the spark irregularly instead of with each ignition cycle.
Check the position and cleanliness of the electrode, as soot or an incorrect gap can produce the same symptom as a faulty transformer.
- 04
The boiler locks out due to an ignition fault as soon as it starts, with a warning on the display.
Cause: Without a spark at the electrode, the control unit interprets that there is no ignition and cuts the cycle for safety.
Before changing the transformer, confirm if the gas valve opens normally: if there is a smell of gas without a spark, it is advisable to check the ignition-electrode assembly before declaring the part faulty.
Fault codes from Junkers that this part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| F7 | Ignition problems. | If the ionization signal is incorrect, the boiler may not ignite properly. This could be caused by a fault in the ignition transformer. Check the condition of the transformer and its connection. |
These symptoms can have more than one cause. If your boiler displays a fault code, send it to us via WhatsApp along with a photo of the labeling, and we'll tell you if this is the part.
Data sheet for the Junkers ignition transformer 87472013580
- Catalogue reference
- 87472013580
- Brand
- Junkers
- Type of part
- Transformers
- Units in stock
- 5 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- 1-2 business days
- Return
- 14 days
Data read on the part and in the manufacturer's documentation
What we have not been able to verify does not appear here.
- Manufacturer
- Hahn
- Manufacturer code
- V 19800 / 8737703010
- Secondary I
- 25 V 34 VA
- Secondary II
- 9 V 4.5 VA
- Primary
- 230 V 50-60 Hz
- Maximum ambient temperature
- 70 °C (class B)
- Equivalent reference Junkers/Bosch
- 87472013580
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Junkers ZC28-1 MFA 23/31 manual (PDF)Document © Junkers, provided as a technical reference.
Frequently asked questions about the ignition transformer 87472013580
Is this Hahn V19800 ignition transformer original for the Junkers Eurostar ZWE24-3MFAD23?
What output voltage does the Hahn V19800 transformer provide?
What fault indicates that the ignition transformer of the Junkers Eurostar ZWE24-3 MFAD 23 boiler needs to be replaced?
How many models are compatible with the ignition transformer Hahn V19800?
What is the reference for the Hahn ignition transformer that I need for my boiler?
What fault code is related to the ignition transformer Hahn V19800?
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