Saunier Duval Themafast F25 E H-MOD SUNG WEI 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

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 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 that require diagnosis on the PCB S1047000

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 respond to any commands, neither from the panel itself nor from the thermostat.

  Cause: The PCB manages the operation of the device; if it fails, it does not process commands.

  Check that the thermostat or external control is receiving power before ruling out the PCB.

• 02

  The fan starts but the flame never ignites.

  Cause: The PCB controls the spark and the gas opening after validating the pre-ventilation; if it fails, there is no flame.

  Check that the air pressure switch and the gas valve are functioning separately before replacing the PCB.

• 03

  The screen displays a fixed fault code that does not disappear even after resetting.

  Cause: A fault in the PCB blocks the security code on the display.

  Check the exact code and compare it with the fault list of your model before purchasing the PCB.

• 04

  The boiler works for a while and then locks out, and it only resets manually to repeat the process.

  Cause: A damaged component in the electronics can cause recurring safety lockouts.

  Check the condition of the cables and connectors that reach the PCB, especially those closest to the burner.

Fault codes Saunier Duval that require diagnosis

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

Uniclima internal SKU

RPE SDT-F25E H-MOD

Brand

Saunier Duval

Type of part

PCBs (control boards)

Units in stock

22 pcs

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.

Manufacturing code (screen printing)

0310144400L12

PCB/model number

SYMSI7.0

Top right corner code (low confidence reading)

125872-15 CA0-0543, followed by 'F1'

Brand printed next to the triangle

SUNG WEI 06V0-A

Connectors/terminals

ZIG, V3V, H5, OU/REMP, H9, P2/P1, H4, uA, EXT, TA, 230V ALIM, 230V

Fuse (approximate reading)

T6,3A 250V~

Manuals and technical documentation

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

• Saunier Duval F 35 E H-MOD Manual (PDF) Document © Saunier Duval, provided as a technical reference.