Saunier Duval Themis 223 PCB Ref. 05267100
RefurbishedSaunier DuvalPCBs (control boards)

Saunier Duval Themis 223 PCB Ref. 05267100

Stock · 5 units

If your boiler does not start, locks out, or exhibits erratic behavior, you may need the Saunier Duval Themis 223 PCB (control board) Ref. 05267100. This part controls the ignition, burner modulation, pump, and safety features of your boiler. When it fails, you will notice that the boiler does not operate as it should. It is compatible with the models Themis 123, 123 V, 218, 219 V, 223, 223 V, 223 NOX, 214/23, 214/23 CE, among others. It is recommended to replace it when these symptoms occur or if a replacement is needed due to wear.

VAT included

Compatibility

Saunier Duval boilers compatible with reference 05267100

PCB with reference 05267100. 14 verified compatibilities: 123 and 123 V.

Proven compatibility

Boiler modelFamilyVerification
Saunier Duval 123ThemisContrasted
Saunier Duval 123 VThemisContrasted
Saunier Duval 218ThemisContrasted
Saunier Duval 219 VThemisContrasted
Saunier Duval 223ThemisContrasted
Saunier Duval 223 VThemisContrasted
Saunier Duval 223 NOxThemisContrasted
Saunier Duval 214/23ThemisContrasted
Saunier Duval 214/23 CEThemisContrasted
Saunier Duval 123 CSDContrasted
Saunier Duval 135SDContrasted
Saunier Duval 223 CSDContrasted
Saunier Duval 228SDContrasted
Saunier Duval 235SDContrasted

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

Guide

How to check if ref. 05267100 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 05267100. 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 05267100 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 are no lights or sound.

    Cause: If the transformer on the PCB fails, the boiler does not receive internal power.

    Measure if there is power at the input of the PCB before replacing it.

  • 02

    The thermostat requests heat but the boiler does not respond.

    Cause: The PCB receives the signal from the thermostat and activates the burner; if it fails, the request is not executed.

    Check that the thermostat closes the contact correctly (you can make a bridge if possible) before blaming the PCB.

  • 03

    The electronic control works intermittently: sometimes it does and sometimes it doesn't.

    Cause: Over time, it is common for solder joints or components to degrade and cause intermittent faults.

    Visually inspect the PCB for cracked solder joints or deformed components before replacing it entirely.

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 05267100 PCB.

Catalogue reference
05267100
Brand
Saunier Duval
Type of part
PCBs (control boards)
Units in stock
5 units
Status
Refurbished
Warranty
1 year
Shipping
Delivery time shown at checkout
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.

Primary voltage (transformer)
220V
Secondary voltage (transformer)
24V
Power (transformer)
10VA
Frequency (transformer)
50Hz
Current (transformer)
135mA T
Before purchasing
  • The code 8/411028 identifies the transformer mounted on the PCB, not the complete PCB: the reference for the complete PCB is 05267100. They are a set and a subcomponent, not equivalent to each other.
Frequently Asked Questions

Frequently asked questions about the PCB 05267100

Does the code 8/411028 identify the entire PCB of the Themis 223?
No. That code corresponds only to the transformer mounted on the PCB; the reference for the complete PCB is 05267100.
Does this PCB 05267100 fit a Saunier Duval SD 135?
Yes, it is compatible with SD 123, 135, 223, 228, and 235, as well as Themis 123 and 223.
What voltage does the transformer 8/411028 on this PCB operate at?
At 220V on the primary and 24V on the secondary, with 10VA at 50Hz.
What fault does replacing the PCB 05267100 in a Themis 223 resolve?
It is replaced when the boiler does not ignite or does not respond to the electronic control.
Can I request this part using only the code 8/411028 instead of 05267100?
Better use the reference 05267100, which is for the complete PCB; 8/411028 only identifies the transformer that is mounted.

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Saunier Duval Themis 223 PCB Ref. 05267100