Control Module SYMSI7.0 Vaillant Group Saunier Duval Isofast C 35 EA Ref. S10470

Saunier Duval boilers compatible with reference S10470

PCB with reference S10470. 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. S10470 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 S10470. 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 S10470 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 control module screen is off or not displaying anything, even though the boiler is powered.

  Cause: The control module does not power the display, preventing it from turning on.

  Make sure that the connector between the control module and the boiler is properly fitted and without bent pins before replacing it.

• 02

  The buttons on the panel do not respond or respond with a delay.

  Cause: The electronics that control the buttons of the module are not functioning properly.

  Clean the connector contact and reset the boiler; if the problem persists with different buttons, the fault is in the module.

• 03

  The boiler does not modulate the power: it always provides maximum or minimum, with no intermediate settings.

  Cause: The control module does not properly manage the modulation signal of the burner.

  Measure if the problem occurs the same in heating as in domestic hot water; if it only happens in one function, first check the sensor for that function.

• 04

  An internal communication fault code appears that does not clear upon reset.

  Cause: The module detects a problem in its internal communication and locks itself for safety.

  Note the exact code: in these systems, there is a distinction between internal communication failure and failure of a specific external component.

• 05

  The boiler starts up well but disconnects a few seconds after starting.

  Cause: One of the relays in the module does not keep the contact closed for the necessary time.

  Check if the cut occurs at the same time after ignition; a repetitive pattern suggests a problem with a relay rather than a gas fault.

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 S10470 PCB.

Catalogue reference

S10470

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.

PCB model

SYMSI7.0

PCB code

0310144400S20

Service label

902123 / S1047000 / 443953 / 859118T8 / KWD IND06 S0097

Mounted relays

3x Omron

UL certification

GF201, classification 94V-0

Reference GF (P/N)

2036288E

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.