Ignition Transformer Saunier Duval Themis 23 Ref. 05210600
RefurbishedSaunier DuvalTransformers

Ignition Transformer Saunier Duval Themis 23 Ref. 05210600

15 €VAT includedIn stock · 5 units

Ignition transformer: refurbished spare part that generates high voltage for the electrode spark. Useful if there is no spark or ignition faults are recurring. Compatible with Thelia 23, Thelia 623, Thelia 23 E (ref. 05210600). Includes a one-year warranty and delivery within 2–4 working days in the EU.

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

Key Data

Reference
05210600
Brand
Saunier Duval
Type of part
Transformers
Available units
5 units in stock
Status
Refurbished
Warranty
1 year
Shipping
2–4 working days (EU)
Return
14 days

The same part (ref. 05210600) equips these models. Verified compatibility; check the reference before purchasing.

Thelia

  • Thelia 23
  • Thelia 623
  • 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 fault: the boiler fails to ignite the burner during startup (no flame formation after several attempts).The ignition transformer is part of the ignition system/group (transformer, cable, connector, and electrode); if it does not generate the spark, the boiler will not ignite and shows F.28. Check: measure the output of the transformer/spark at the electrode with the boiler on demand; check the continuity of the high voltage cable and connections, and rule out gas issues (pressure, valve) and grounding problems first.
F.29Failed re-ignition attempts during operation: the flame is lost and the boiler fails to re-ignite.Sources document 'ignition failures in the ignition transformer' as the cause of F.29; if the transformer does not produce a stable spark when reigniting after a flame loss, F.29 is triggered. Check: spark at the electrode during reignition and condition of the transformer/cable; also rule out temporary gas shortage and flue recirculation/blockage.
How do I know if this ignition transformer is for my boiler?
Verify the reference 05210600 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part. It is a DIFF 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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