Saunier Duval Isofast Condens F 35 E Display Module Ref. S1072300
RefurbishedSaunier DuvalPCBs (control boards)

Saunier Duval Isofast Condens F 35 E Display Module Ref. S1072300

Stock · 4 units

The control PCB of the Saunier Duval Isofast Condens F 35 E Module Ref. S1072300 manages the ignition, burner modulation, pump, and safety features of the boiler. If it malfunctions, the boiler may fail to start, lock out, or exhibit erratic behavior, with fault codes such as F12, F18, or F13. This module is compatible with models from the Isofast Condens, Isofast, and Isomax ranges, such as the F 30 E and F 35 E, among others. It is recommended to replace it when problems in operation or errors on the display are detected.

VAT included

Compatibility

Saunier Duval boilers compatible with reference S1072300

PCB with reference S1072300. Seven confirmed compatibilities: F 30 E and F 35 E.

Proven compatibility

Boiler modelFamilyVerification
Saunier Duval F 30 EIsofast CondensContrasted
Saunier Duval F 35 EIsofast CondensContrasted
Saunier Duval F 30 E H-MODIsofastContrasted
Saunier Duval F 35 E H-MODIsofastContrasted
Saunier Duval F 35 EAIsofastContrasted
Saunier Duval F 35 EIsomaxContrasted
Saunier Duval Condens F 35 EIsomaxContrasted

Can't see your model or have questions? The printed reference takes precedence. How to check it ·

Guide

How to check if ref. S1072300 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 S1072300. 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.
Diagnosis and fault codes

Symptoms and faults that the PCB S1072300 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 is completely unresponsive: there are no lights or reactions when pressing buttons.

    Cause: The control board is not sending power to the system.

    Check the fuse on the PCB and verify that power is reaching it before considering it broken.

  • 02

    The display shows an error that does not appear in the manual, or it freezes.

    Cause: This usually happens when the PCB has a fault in the processor, not just in a sensor.

    Cut the power to the boiler for a few minutes and turn it back on before ruling out the PCB.

  • 03

    The remote control or thermostat does not affect the boiler intermittently.

    Cause: Communication between the panel and the PCB is lost and regained for no apparent reason.

    Check the connectors of the bus wiring before replacing the PCB; a poor connection can cause the same issue.

  • 04

    The boiler turns on, runs for a while, and then shuts off by itself, repeating this several times.

    Cause: The safety electronics cut off the supply due to a reading that it considers abnormal.

    Note the exact fault code each time it shuts down before replacing the PCB: this helps to determine if the fault is with the board or another component.

Fault codes from Saunier Duval that this spare part resolves.

CodeFaultDiagnosis and solution
F12No signal from the user interfaceYes — it points to this display/interface module or its connection cable with the main PCB.
F18User interface faultYes — it corresponds to this display/control board module.
F13Main PCB faultNo — that code is for the MAIN PCB (a different part), not for this display.

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.

Technical data

Data sheet for the Saunier Duval S1072300 PCB.

Catalogue reference
S1072300
Brand
Saunier Duval
Type of part
PCBs (control boards)
Units in stock
4 units
Status
Refurbished
Warranty
1 year
Shipping
Delivery time shown at checkout
Return
14 days
Documentation

Manuals and technical documentation

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

Frequently Asked Questions

Frequently asked questions about the PCB S1072300

Is this PCB compatible with a Saunier Duval Isofast Condens F 35 E?
Yes, this PCB is compatible with the Isofast Condens F 35 E model, as long as it matches exactly with those listed in the compatibility list.
Which models are compatible with the Saunier Duval Isofast Condens F 35 E display module Ref. S1072300?
The compatible models are: Isofast Condens F 30 E, F 35 E; Isofast F 30 E H-MOD, F 35 E H-MOD, F 35 EA; and Isomax F 35 E, Condens F 35 E. In total, there are 7 models.
How can I know if this PCB is suitable for my boiler?
Check that the model of your boiler matches exactly with one of those listed in the compatibility list of the datasheet.
Is this PCB compatible with the Isofast range?
Yes, the PCB is compatible with the models from the Isofast range listed in the compatibility list, such as the F 30 E H-MOD and the F 35 E H-MOD.
What fault codes are documented for this PCB?
The documented fault codes for this PCB are F12, F18, and F13.
What is the reference for this display module?
The reference for the display module is MODTCLISOFASTCF35E.

Spare parts related to Saunier Duval Isofast

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Saunier Duval Isofast Condens F 35 E Display Module Ref. S1072300