Main PCB for Themaclassic F AS 24 E and Compatible Models

Main PCB for Themaclassic F AS 24 E and Compatible Models

Stock · 1 unit

The main PCB controls the ignition, burner modulation, pump, and safety features of the Baxi Roca Themaclassic F AS 24 E boiler and compatible models. If it malfunctions, the boiler may fail to start, lock out, or operate erratically, displaying fault codes such as F13, F11, F12, or F18. This part is compatible with several models from the ThemaClassic, Themafast, Thematek, Isotwin, Isofast, and Thema ranges. It is recommended to replace it when these symptoms or errors are detected.

VAT included

Compatibility

Saunier Duval boilers compatible with reference S10470

PCB with reference S10470. 33 verified compatibilities: F 25 E and F 24 E.

Proven compatibility

Boiler modelFamilyVerification
Saunier Duval F 25 EThemaClassicContrasted
Saunier Duval F 24 EThemaClassicContrasted
Saunier Duval C 24 EThemaClassicContrasted
Saunier Duval C 25 EThemaClassicContrasted
Saunier Duval C AS 24 EThemaClassicContrasted
Saunier Duval C AS 25 EThemaClassicContrasted
Saunier Duval F AS 24 EThemaClassicContrasted
Saunier Duval F AS 25 EThemaClassicContrasted
Saunier Duval F AS 30 EThemaClassicContrasted
Saunier Duval C 24 EThemafastContrasted
Saunier Duval C 25 EThemafastContrasted
Saunier Duval C 28 EThemafastContrasted
Saunier Duval C 30 EThemafastContrasted
Saunier Duval F 24 EThemafastContrasted
Saunier Duval F 25 EThemafastContrasted
Saunier Duval F 25 E H-MODThemafastContrasted
Saunier Duval F 30 EThemafastContrasted
Saunier Duval F 30 E H-MODThemafastContrasted
Saunier Duval C 24 EThematekContrasted
Saunier Duval C 24 EO BTThematekContrasted
Saunier Duval F 24 EThematekContrasted
Saunier Duval S C 24 EThematekContrasted
Saunier Duval S F 24 EThematekContrasted
Saunier Duval C 24 EAIsotwinContrasted
Saunier Duval C 28 EAIsotwinContrasted
Saunier Duval C 24 E ad04IsotwinContrasted
Saunier Duval C 24 E de04IsotwinContrasted
Saunier Duval F 24 EIsotwinContrasted
Saunier Duval F 24 EAIsotwinContrasted
Saunier Duval F 28 EAIsotwinContrasted
Saunier Duval F 30 E H-MODIsofastContrasted
Saunier Duval F 35 E H-MODIsofastContrasted
Saunier Duval F 25 E STLThemaContrasted

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

Guide

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.
Diagnosis and fault codes

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 boiler does not light up any indicator, it is completely off even though there is power at the outlet.

    Cause: The main PCB manages all the power supply and control of the boiler, so its failure leaves everything unresponsive.

    Before replacing it, check the fuse of the PCB and the main circuit breaker; they are the most common cause of this symptom and cost nothing to check.

  • 02

    The control works but the boiler does not execute the command: it neither ignites the burner nor moves the pump.

    Cause: The microcontroller on the main PCB receives the request but does not activate the startup sequence.

    Perform a full reset by cutting the power for one minute and check that the PCB connectors are not loose or corroded.

  • 03

    A new, unusual fault code appears, or it changes every time an attempt is made to reset the boiler.

    Cause: The damaged control electronics cause incorrect readings from the sensors, generating fault codes that do not reflect the actual problem.

    Write down the exact code and check it in the manual before deciding: it may point to a sensor and not to the PCB.

  • 04

    The boiler shuts off on its own after being on for a while, without following a clear pattern of use or time.

    Cause: An intermittent fault in the PCB, such as a cold solder joint, causes cuts that do not always correspond with the same warning.

    Note if the shutdown always occurs when a specific component starts (pump, fan): if so, check that component first.

Fault codes from Saunier Duval that this spare part resolves.

CodeFaultDiagnosis and solution
F13Main PCB faultYes — it is the direct code of the PCB. Check 230 V, fuse, connectors, and grounding; if it persists, replace the PCB.
F11No signal is reaching the main circuitPossible — first rule out wiring and connectors to the PCB; if they are fine, it is usually the PCB.
F12No signal from the user interfaceNormally not — it's usually the display or its cable, not this main PCB.
F18User interface faultNormally not — it corresponds to the panel/display, not to this PCB.

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 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.

voltage
24V AC
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 S10470

Is the main PCB MODFAS24E compatible with the ThemaClassic F 25 E boiler?
Yes, the ThemaClassic F 25 E is included in the list of boilers compatible with the main PCB MODFAS24E.
Can I use the MODFAS24E PCB in an Isotwin F 24 E boiler?
Yes, the Isotwin F 24 E is listed among the models compatible with the main PCB MODFAS24E.
Does the MODFAS24E PCB work for the Thema C 24 E boiler?
Yes, the Thema C 24 E is one of the models compatible with the main PCB MODFAS24E.
How many models are compatible with the main PCB MODFAS24E?
The main PCB MODFAS24E is compatible with a total of 33 models.
What fault codes are compatible with the MODFAS24E PCB?
The documented fault codes for the main PCB MODFAS24E are F13, F11, F12, and F18.

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Main PCB for Themaclassic F AS 24 E and Compatible Models