
ERA BV 066-0088.0 Transformer For Junkers Boiler ZWE24-2KDG23
ERA brand transformer, code BV 066-0088.0, identified directly on the label. It operates with 230 V on the primary side (terminals 7-9) and delivers 21 V / 33 VA on the secondary side (terminals 1-2). It supports up to 40 °C ambient temperature and 125 °C in the winding. It is mounted in Junkers boilers from the ZE24-2K and ZWE24-2K range.
VAT included
Consult via WhatsAppCompatible Junkers boilers
Ignition transformer. Five confirmed compatibilities: ZE24-2KDP and ZE24-2KP.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Junkers ZE24-2KDP | ZE24-2KDP | Contrasted |
| Junkers ZE24-2KP | ZE24-2KP | Contrasted |
| Junkers ZWE24-2KDG23 | ZWE24-2KDG23 | Contrasted |
| Junkers ZWE24-2KDP23 | ZWE24-2KDP23 | Contrasted |
| Junkers ZWE24-2KP | ZWE24-2KP | 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 it 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 —. If it is not visible, do not identify the part by 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 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 tries to ignite but the flame does not appear.
Cause: The transformer does not provide the necessary voltage for the spark to jump at the electrode.
Check the electrode and the ignition wiring before assuming that the transformer is faulty.
- 02
The boiler is locking out and displaying a fault code for ignition or flame.
Cause: After several attempts without a spark, the control board cuts off the gas for safety and locks the unit.
Reset the boiler and repeat the cycle, observing if the fault always occurs at the same step of the ignition.
- 03
The ignition takes longer than usual or fails intermittently.
Cause: A winding that degrades loses voltage progressively before it stops functioning.
Check the connections at the transformer terminals for any loose or corroded terminals.
- 04
A crackling or strange arcing sound is heard near the burner when starting up.
Cause: A high voltage leak due to damaged insulation generates arcs outside the electrode.
Inspect the transformer body and the high voltage cable for cracks or burn marks.
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.
Junkers ignition transformer datasheet
- 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
- ERA
- Code
- BV 066-0088.0
- Primary voltage
- 230V 50/60Hz (terminals 7-9)
- Secondary voltage
- 21V (terminals 1-2)
- Power
- 33VA
- Maximum ambient temperature (Ta)
- 40°C
- Winding temperature (TS)
- 125°C
- Date code
- 95/01






