Saunier Duval Themafast C 28 E Control PCB Ref. S1047000

Saunier Duval boilers compatible with reference S1047000

PCB with reference S1047000. 33 verified compatibilities: F 25 E and F 24 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. S1047000 is the part for your boiler

What determines it is not the boiler model, but the reference printed on the part you already have installed.

1. Find the reference printed on the installed part and check whether it matches the catalogue reference S1047000. 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 and faults that the PCB S1047000 resolves.

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 there are no lights or indications on the control panel.

  Cause: If the fuse of the PCB blows, all the electronics lose power.

  With a multimeter, check if the fuse on the PCB is blown before replacing it; if it is, also check what may have caused it to trip.

• 02

  The PCB does not respond to the room thermostat or to the buttons on the control panel itself.

  Cause: A fault in the communication of the PCB prevents it from receiving any commands sent.

  Check that the connectors of the remote control and the wiring to the PCB are properly fitted before replacing it.

• 03

  A fault code from the control board appears on the display and does not disappear after resetting.

  Cause: The PCB locks itself when it detects an internal fault that it cannot resolve on its own.

  Note the exact code: in these series it is usually described in the manual and may indicate a peripheral, not the PCB itself.

• 04

  The boiler turns off by itself repeatedly without the user doing anything.

  Cause: An intermittent fault in the control board can cause safety shutdowns without any real external cause.

  Keep a record of when the outages occur (with heating, with domestic hot water, during startup) to rule out other components before replacing the PCB.

Fault codes from Saunier Duval that this spare part resolves.

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 S1047000 PCB.

Catalogue reference

S1047000

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

Data read on the part and in the manufacturer's documentation

What we have not been able to verify does not appear here.

Reference (adhesive label)

S1047000

PCB code (silkscreen)

0310144400S20

Manufacturing index

IND 06

Fuse

T630mA / 250V

Silkscreened name on PCB

SYMSI7.0

Plastic regulation (UL)

GF201 94V-0

Manuals and technical documentation

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

• Saunier Duval S C 24 E Manual (PDF)Document © Saunier Duval, provided as a technical reference.