Ignition Transformer Junkers Euromaxx ZWC 28 32 1MFA 23 Ref. 8747201252
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Ignition Transformer Junkers Euromaxx ZWC 28 32 1MFA 23 Ref. 8747201252

Stock · 1 unit

The ignition transformer generates the spark needed to ignite the burner of the boiler. When it fails, you will notice that the boiler attempts to start unsuccessfully, which can lead to a lockout. This transformer is compatible with Junkers boilers from the Euromaxx range, such as the models ZWC 24/28 1MFA-23 and ZWC 28/32 1MFA-23, among others. It is recommended to replace it if you experience ignition problems or lockout during startup. The manufacturer reference is 8747201252.

VAT included

Compatibility

Junkers boilers compatible with reference 8747201252

Ignition transformer with reference 8747201252. Two confirmed compatibilities: Euromaxx ZWC 24/28 1MFA-23 and Euromaxx ZWC 28/32 1MFA-23.

Proven compatibility

Boiler modelFamilyVerification
Junkers Euromaxx ZWC 24/28 1MFA-23JunkersContrasted
Junkers Euromaxx ZWC 28/32 1MFA-23JunkersContrasted

Can't see your model or have questions? The printed reference takes precedence. How to check it ·

Guide

How to check if the ref. 8747201252 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.

  1. Find the reference printed on the installed part and check whether it matches the catalogue reference 8747201252. If it is not visible, do not identify the part from its shape alone.
  2. Check the full boiler model on its data plate and look for it in the model associations on this page.
  3. Compare the connections and physical body with the original part before installation.
  4. If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.
Diagnosis and fault codes

Symptoms and faults that the ignition transformer 8747201252 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 several times, you can hear the clicking of the spark, but the burner does not light.

    Cause: The transformer generates insufficient or intermittent spark to ignite the gas and air mixture.

    Check the condition and distance of the ignition electrode: a dirty or misaligned electrode produces the same symptom without the transformer failing.

  • 02

    The boiler locks out due to ignition failure after the usual attempts.

    Cause: If no spark or flame is detected within the safety time, the control unit cuts off the gas and locks the equipment.

    Check that power is reaching the transformer pins before replacing it, so you can rule out a wiring issue or a problem with the PCB.

  • 03

    No spark is visible or audible at the electrode when starting.

    Cause: The transformer does not deliver the high voltage necessary for the spark to jump.

    Check that the high voltage cable to the electrode is properly connected and without visible breaks before replacing it.

  • 04

    The ignition fault appears intermittently, not always on the first attempt.

    Cause: A transformer that begins to degrade may produce weak sparks irregularly before completely failing.

    Note whether the fault occurs during cold start or after a while of use; this pattern helps to confirm if the source is in the transformer.

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.

Technical data

Ignition transformer data sheet Junkers 8747201252

Catalogue reference
8747201252
Brand
Junkers
Type of part
Transformers
Units in stock
1 unit
Status
Refurbished
Warranty
1 year
Shipping
Delivery time shown at checkout
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.

Encapsulation
blue potting
Connection
connection pins
Frequently Asked Questions

Frequently asked questions about the ignition transformer 8747201252

Is this transformer suitable for a boiler from the ZSR series?
According to the catalog, it is compatible with the ZSBR, ZSN, ZSR, and ZWR series, but it is advisable to check the exact model of your boiler.
When should this transformer be replaced in a ZSN boiler?
When the boiler does not ignite or gets locked due to an ignition fault, once the electrode and wiring have been ruled out.
How is this transformer for boilers ZSBR physically identified?
It is a blue potting block with connection pins, typical of ignition transformers that generate the spark for the burner.

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Ignition Transformer Junkers Euromaxx ZWC 28 32 1MFA 23 Ref. 8747201252