Saunier Duval Themaplus F 23 E PCB (control board)

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

  The boiler does not ignite, and upon opening it, the fuse is blown.

  Cause: The fuse blows if there is a problem with the power supply to the PCB.

  Before changing the PCB, check which fuse your version uses and if the new one blows when powered on.

• 02

  The electronic control stops responding to the panel controls: it doesn't change temperature or mode.

  Cause: The electronic control is not processing user commands, which may indicate that it is failing.

  Try turning off and on from the main switch; if the panel still does not respond, the electronic control is faulty.

• 03

  The boiler ignites the pilot but does not switch to the main flame.

  Cause: The PCB does not allow the pilot to switch to the main flame if there is a fault in the relay circuit.

  Check that the pilot stays lit for several minutes; if it is steady and does not transition to the main flame, point to the electronic control.

• 04

  It smells like burning or there is a dark mark next to the transformer on the PCB.

  Cause: The transformer can overheat if the electronic control fails.

  With the boiler unplugged, check for discoloration or smell around the transformer before replacing it.

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

PLCTHPL23

Brand

Saunier Duval

Type of part

PCBs (control boards)

Units in stock

1 unit

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.

Component manufacturer

Saunier Duval

Transformer (modelo)

23535-A

Primary transformer

24V 50/60Hz (6-10)

Secondary transformer

48V 0.05VA (ta 70/B)

Mains voltage

230 V

Fuse without pilot (SANS VEILLEUSE)

200 mA T

Fuse with pilot light (AVEC VEILLEUSE)

80 mA T

IC1 (regulator)

REG. SAV 1496b1s HEX 6EE6

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.