Saunier Duval Isofast F 30 E 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

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 turn on: there is no display, no light, it does nothing when power is supplied.

  Cause: The PCB does not send voltage to the internal circuits, so no component receives power.

  Measure with a multimeter that the mains voltage reaches the input terminal block of the PCB and check the fuse.

• 02

  A different fault code appears every time it is restarted, with no physical changes in the installation.

  Cause: An intermittent fault in the control module causes erroneous readings that vary between starts.

  Note the codes that appear after each reset; if the same one does not repeat, suspect the PCB before a sensor.

• 03

  A relay click is heard when requesting heat, but the pump and fan do not turn.

  Cause: The corresponding relay on the PCB does not close the contact that powers those components.

  Connect the pump and the fan directly to check that they are working before replacing the PCB.

• 04

  The modulating control cannot adjust the power, and the boiler always operates at maximum or shuts down.

  Cause: The PCB does not correctly process the modulation signal to the gas valve.

  First, check that the gas valve responds to a manual command before blaming 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

1-2 business days

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)

0310144400S19

Manufacturing index

IND 06

Flammability rating of the connector

UL94V-0 (marking GF201)

Control model

SYMSI7.0

Relays

OMRON G5Q-1 DC24V 5A30VDC 10A250VAC (China), x3

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.