Myrra Ignition Transformer Saunier Duval Thema C 23 E Ref. 57275
Ignition transformer Myrra, code 23592-B, for Saunier Duval boilers Thema C 23 E, Thema F 23 E, Combitek F 23 E, and Themaplus F 23 E. It provides a voltage of 24V/30VA that powers the ignition electrode of the burner. Replacement requires first confirming the fault of the part through technical diagnosis, even when the boiler does not ignite or does not spark despite having the rest of the circuit correct.
- Type of part
- Transformers
- Status
- Refurbished
- Catalogue reference
- 57275
- Warranty
- 1 year
Saunier Duval boilers compatible with reference 57275
Ignition transformer with reference 57275. Two confirmed compatibilities: Thema C23E and Combitek F23E.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval Thema C23E | Thema | Contrasted |
| Saunier Duval Combitek F23E | Combitek | 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. 57275 is the part for your boiler
The part reference, model, and equipment revision must be verified against the manufacturer's documentation.
- Find the reference printed on the installed part and check whether it matches the catalogue reference 57275. 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 that require diagnosis in the ignition transformer 57275
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 or tries to ignite several times before locking out.
Cause: The transformer does not deliver the necessary current for the electrode to generate the spark.
Check the ignition electrode: dirt or incorrect spacing with the ground can cause the same fault as a defective transformer.
- 02
The spark appears weak, intermittent, or does not appear at the electrode.
Cause: A transformer that degrades loses power and the spark stops being constant.
Check the wiring between the transformer and the electrode, looking for cuts, burns, or poorly fitted connectors.
- 03
The display shows a lock due to flame or ignition failure when trying to start.
Cause: Without a spark at the electrode, the control board does not detect ignition and cuts the cycle for safety.
Before changing the transformer, confirm that the gas valve opens correctly to rule out that the fault is in the gas supply and not in the ignition.
- 04
The ignition works some days and fails on others, without a clear pattern.
Cause: Moisture or condensation near the transformer can cause intermittent current leaks in the winding.
Check for any moisture or condensation accumulated in the area of the transformer and the ignition wiring before considering it faulty.
Fault codes Saunier Duval that require diagnosis
| Code | Fault | Technical checks |
|---|---|---|
| F.28 | Ignition fault of the burner | The burner does not ignite after five attempts, indicating a problem in the ignition process. Check the gas supply and the condition of the ignition. If the transformer is not receiving power or is damaged, it may be the cause of this fault. |
| F.29 | Ignition fault of the burner | Like fault code F.28, the burner does not ignite after five attempts. Make sure that gas is reaching properly and that there are no obstructions. If the transformer is faulty, it may be the reason for this issue. |
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.
Saunier Duval 57275 Ignition Transformer Datasheet
- Catalogue reference
- 57275
- Uniclima internal SKU
- TRSDC23E
- Brand
- Saunier Duval
- Type of part
- Transformers
- Units in stock
- 2 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- Return
- 14 days
Part data and available documentation
Contrast the label codes, PCB, and revision with the installed part; they are not necessarily equivalent references.
- Manufacturer
- Myrra
- Code
- 23592-B
- Primary voltage
- 230V
- Secondary voltage
- 24V
- Power
- 30VA
- Frequency
- 50/60Hz
- Fuse
- T 200mA
- Thermal class
- ta 65/B
- Additional code
- 107042/D
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Saunier Duval Combitek F23E Manual (PDF) Document © Saunier Duval, provided as a technical reference.
Frequently asked questions about the ignition transformer 57275
Does the Myrra transformer Ref. 57275 work for the Saunier Duval Thema F 23 E?
Who manufactures the ignition transformer for the Thema C 23 E?
What fault does the Myrra 23592-B transformer resolve in the Thema C 23 E?
What output voltage does the Myrra transformer of the Combitek F 23 E provide?
What fuse does the Myrra Ref. 57275 transformer use?
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