Saunier Duval Thema F 23 E PCB Ref. 05741000

Saunier Duval boilers compatible with reference 05741000

PCB with reference 05741000. Eight confirmed compatibilities: C 23 E and F 23 E.

Proven compatibility

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. 05741000 is the part for your boiler

The part reference, model, and equipment revision must be verified against the manufacturer's documentation.

1. Find the reference printed on the installed part and check whether it matches the catalogue reference 05741000. If it is not visible, do not identify the part from 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.

Symptoms that require diagnosis on the PCB 05741000

The PCB controls the ignition, modulation, and safety features of the boiler. These are the typical symptoms and what to do:

Common symptoms and faults

• 01

  There are no signs of life: no lights or display, the boiler seems to be unplugged.

  Cause: The PCB is not receiving power to supply its control circuits.

  Check the main fuse and measure with a multimeter that there are stable 230V at the input of the PCB.

• 02

  An error code appears that repeats when trying to reset.

  Cause: The PCB detects a persistent fault in a sensor or a safety device and locks the equipment.

  Note the code and first discard the component indicated (pressure switch, sensor, flame) before replacing the PCB.

• 03

  The boiler turns on by itself without anyone requesting heat, or it does not respond when heat is requested.

  Cause: Fault in the part of the PCB that manages the heating demand signal.

  Check that the room thermostat and its wiring are functioning properly by testing in direct bridge mode if possible.

• 04

  The lights or the display flicker without reason or remain fixed in a strange pattern.

  Cause: Fault in the power supply to the control electronics of the PCB.

  Check that the mains voltage to the boiler is stable and there are no micro-cuts before blaming the PCB.

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.

Data sheet for the Saunier Duval 05741000 PCB.

Catalogue reference

05741000

Uniclima internal SKU

CTECTF23E

Brand

Saunier Duval

Type of part

PCBs (control boards)

Units in stock

5 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.

Supply voltage

230 V

CE code

CE PIN 0063AT1128

Main PCB code

109042/F

Auxiliary PCB code

356081200

Transformer

T28-0438, TUV Class E EN61558, primary 24V~ 50/60Hz (1-5), secondary 48V~ 0.05VA (8-10)

Logic chip 1

HCTA07FD 0112998

Logic chip 2

AM3748IMBT-154SP 9301QD

Manuals and technical documentation

Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.

• Saunier Duval F 23 E Manual (PDF) Document © Saunier Duval, provided as a technical reference.