Saunier Duval Thema C 23 E Control Board Ref. 05745900
RefurbishedSaunier DuvalPCBs (control boards)

Saunier Duval Thema C 23 E Control Board Ref. 05745900

45 €VAT includedIn stock · 3 units

PCB (control board): refurbished spare part that controls the ignition, modulation, and safety features of the boiler. Useful if the boiler does not ignite, locks up, or the display is unresponsive. Compatible with F 23 E, C 23 E, F AS 23 E (ref. 05745900). 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
05745900
Brand
Saunier Duval
Type of part
PCBs (control boards)
Available units
3 units in stock
Status
Refurbished
Warranty
1 year
Shipping
2–4 working days (EU)
Return
14 days

The same part (ref. 05745900) equips these models. Verified compatibility; check the reference before purchasing.

Thema

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

Themaplus

  • F 23 E
  • C 23 E

Combitek

  • F 23 E
  • C 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)
13Main PCB faultInternal fault in the control board (PCB) preventing operation/signal management. Check power supply and low voltages on the PCB (e.g., 5 V), fuse, and connectors; if the wiring/UI are correct and the fault code persists, replace the board.
How do I confirm that this PCB is the correct one for my boiler?
Check the silkscreened reference 05745900 on your PCB and ensure that your boiler model is on the list of compatible ones; also compare the number and position of the connectors.
Which models is this PCB suitable for?
It is a PCB shared by several models of the same range (see Compatibility tab). If your model does not appear, send us a photo of the silkscreen and we will confirm it.
When installing it, do you need to parameterize or configure anything?
If you replace it with the same reference, it is usually sufficient to replicate the jumpers/configuration of the original; after installation, a technician should verify service parameters (type of gas, power settings) and check combustion and safety features.
Is it the same as the display or control panel?
No. This is the main PCB (controls ignition, modulation, sensor readings, and safety features). The display/user interface is a separate piece; if your fault is with the panel, it is not this PCB.
Why does a PCB fault occur and how can I prevent the new one from failing?
It is usually due to external causes: voltage spikes, shorts in the pump, fan, or valves, humidity, or poor grounding. Before installing the new one, check peripherals, wiring, and connectors, fix water leaks, and verify polarity and grounding.
What does refurbished mean and what coverage does it have?
Part removed from an out-of-service boiler, inspected and bench-tested; not factory new. Includes 1-year warranty and 14-day return policy. Delivery within 2–4 working days in the EU.

Spare Parts Related Boiler Thema C 23 E

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