Honeywell Ignition Transformer AC1A114 - Hermann Micra 2 24 E
RefurbishedHermannTransformersHoneywell

Honeywell Ignition Transformer AC1A114 - Hermann Micra 2 24 E

Stock · 1 unit

Honeywell ignition transformer model AC1A114, used in Hermann boilers from the Micra, Master Condensing, Spazio Zero, and Thesi series. It generates the high voltage that arcs at the electrode to ignite the burner. According to the label, it operates at 230 V, 50-60 Hz, with an ambient temperature range of -20 to 90°C. It is replaced when the boiler does not ignite or loses spark.

VAT included

Compatibility

Compatible Hermann boilers

Ignition transformer. Seven confirmed compatibilities: Master Condensing 26 and Micra 2 24 E.

Proven compatibility

Boiler modelFamilyVerification
Hermann Master Condensing 26HermannContrasted
Hermann Micra 2 24 EHermannContrasted
Hermann Micra 2 24 SEHermannContrasted
Hermann Micra Condens 26HermannContrasted
Hermann Micra Condensing 26HermannContrasted
Hermann Spazio Zero Condensing 26HermannContrasted
Hermann Thesi Condensing 26/32HermannContrasted

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

Guide

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.

  1. 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.
  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 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, but the burner does not light.

    Cause: The transformer does not generate the high voltage necessary for the electrode to produce the spark.

    Check that the high voltage cable is not cracked or disconnected from the electrode or the transformer.

  • 02

    There is no spark visible or audible at the ignition electrode.

    Cause: If the transformer has no output voltage, the electrode cannot generate an arc, even if the gas reaches the burner.

    With the boiler turned off, check that the electrode is not dirty with soot or broken before considering that the transformer is faulty.

  • 03

    The boiler locks out after attempting to start, displaying an ignition fault.

    Cause: The control unit stops the cycle if it does not detect flame ionization, and without a spark from the transformer, the flame does not occur.

    Reset the boiler and observe if the fault occurs at the same moment in the cycle; if so, it is more likely to be the transformer and not a one-time fault.

  • 04

    The spark jumps weakly or irregularly, not always on every attempt.

    Cause: A transformer with damaged winding loses capacity and does not produce a stable discharge in each cycle.

    Check that the mains voltage reaching the transformer is correct and stable before replacing it.

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

Hermann ignition transformer datasheet

Brand
Hermann
Type of part
Transformers
Units in stock
1 unit
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
Honeywell
type
AC1A114
voltage
230 V ~
frequency
50-60 Hz
Ambient temperature range
TA -20/90°C (first character cut off by the angle of the photo)
Manufacturing date
18/...
Frequently Asked Questions

Frequently asked questions about the ignition transformer

Who manufactures the ignition transformer for the Hermann Micra 2 24 E?
Honeywell, model AC1A114, according to the label.
Does this Honeywell AC1A114 transformer also work for a Hermann Master Condensing 26?
Yes, the Master Condensing 26 is on the list of compatible boilers, along with the Micra, Spazio Zero, and Thesi Condensing series.
What voltage does the ignition transformer of the Hermann Micra Condens 26 operate at?
A 230 V, 50-60 Hz, according to the label.
Is this transformer the same model as Ref. 52004120 of the Hermann Micra 2 standard?
Both share the manufacturer code Honeywell AC1A114, but this data sheet, unlike Ref. 52004120, does not have its own store reference indicated.

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Honeywell Ignition Transformer AC1A114 - Hermann Micra 2 24 E