Saunier Duval Isofast F30E H-MOD 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 circulation pump or the gas valve do not activate even though the boiler appears to be on.

  Cause: One of the relays on the PCB did not switch, and that specific load remains without power.

  With the boiler off, check that the pump spins freely when pushed by hand before ruling out the PCB.

• 02

  The boiler works intermittently: sometimes it starts up fine and other times it stops halfway.

  Cause: A relay that makes poor contact or sticks causes the power-on command to arrive intermittently.

  Note when the fault occurs (start-up, heating, shutdown) to narrow down which relay and which load are involved.

• 03

  The PCB receives power, but the boiler does not respond to any command.

  Cause: If none of the three relays switched, the PCB is not controlling any of the connected loads.

  Check that the fuses in the installation and on the PCB itself are not blown before replacing it.

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

PLCISF30MOD

Brand

Saunier Duval

Type of part

PCBs (control boards)

Units in stock

0 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.

Reference printed on the PCB

S1047000

Production/batch code

0310144400S19

Relays

3x OMRON G5Q-1, 24 V DC, 5 A / 250 V AC

Workshop/Repair Label

SD10024C, WO:513893, NR:0056

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.