Ignition Transformer Saunier Duval Thelia 23 E Ref. 05111000
RefurbishedSaunier DuvalTransformers

Ignition Transformer Saunier Duval Thelia 23 E Ref. 05111000

25 €VAT includedIn stock · 4 units

Ignition transformer: refurbished spare part that generates high voltage for the spark of the electrodes. Useful if there is no spark or ignition faults are repeated. Compatible with Thema C 23 E, Thema F 23 E, Thema C 23 AS E (ref. 05111000). Includes a one-year warranty and delivery within 2–4 working days in the EU.

1
Consult via WhatsApp
Delivery in 2–4 working days
1-year warranty
14-day return
Technical support

Key Data

Reference
05111000
Brand
Saunier Duval
Type of part
Transformers
Available units
4 units in stock
Status
Refurbished
Warranty
1 year
Shipping
2–4 working days (EU)
Return
14 days

The same part (ref. 05111000) equips these models. Verified compatibility; check the reference before purchasing.

Thema

  • Thema C 23 E
  • Thema F 23 E
  • Thema C 23 AS E
  • Thema F 23 AS E

Themaplus

  • Themaplus F 23 E
  • Themaplus C 23 E

Combitek

  • Combitek F 23 E

Isofast

  • Isofast C 28 E NOx

Thelia

  • Thelia 23 E

Themis

  • Themis 23 E

Fault codes related to this part (not the entire boiler). They usually have more possible causes: first rule out electrodes, wiring/connections, and gas supply. Verified with ≥3 sources.

CodeWhat does it mean?Cause and diagnosis (this part)
F.28Ignition failure at startup: the boiler attempts to ignite but does not detect a flame after the ignition sequence.The transformer generates the high voltage for the spark; if its winding fails, there is no arc and the burner does not ignite despite the gas arriving. Check that there is NO spark, measure the primary and secondary windings with a multimeter, and also inspect the high voltage cable, the connector, and the electrodes.
F.29Repeated failed ignitions: the flame does not establish stably after several attempts.A faulty or poorly connected transformer gives a weak or intermittent spark and causes ignition faults leading to lockout. Measure the windings, ensure the connections, and check the ionisation electrode and the high-voltage cable.
How do I know if this ignition transformer is for my boiler?
Verify the reference 05111000 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part.
What is it used for?
The ignition transformer generates the high voltage for the electrode spark.
Is there no spark or repeated ignition faults?
No spark at the electrode despite having gas.
Which models is it suitable for?
Part shared by various models (see Compatibility). If your model does not appear, send us a photo of the marking and we will confirm it.
Installation and recommendations
Check the electrode and the high voltage cable.
What does refurbished mean and what coverage does it have?
Part removed from a boiler out of service, inspected and tested. Includes 1-year warranty and 14-day return policy. Delivery within 2–4 working days in the EU.

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