PCB Boiler Saunier Duval Thema/Themis - Code B/052151H
Saunier Duval Thema/Themis presents the PCB for the Saunier Duval Thema/Themis boiler - Code B/052151H. This control board is responsible for managing the ignition, burner modulation, pump, and safety features of the boiler. When it fails, you will notice that the boiler does not start, gets locked, or behaves erratically. It is compatible with models such as Themis 23, Themis AS23, and Themis C23, among others. It is recommended to replace it when you experience these issues to restore the normal operation of your boiler.
VAT included
Consult via WhatsAppSaunier Duval boilers compatible with reference 05712600
PCB with reference 05712600. Five confirmed compatibilities: Themis 23 and Themis AS23.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval Themis 23 | Themis | Contrasted |
| Saunier Duval Themis AS23 | Themis | Contrasted |
| Saunier Duval Themis 23V | Themis | Contrasted |
| Saunier Duval Themis C23 | Themis | Contrasted |
| Saunier Duval Themis C23V | Themis | Contrasted |
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 the ref. 05712600 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.
- Find the reference printed on the installed part and check whether it matches the catalogue reference 05712600. If it is not visible, do not identify the part from its shape alone.
- Check the full boiler model on its data plate and look for it in the model associations on this page.
- Compare the connections and physical body with the original part before installation.
- If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.
Symptoms and faults that the PCB 05712600 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 ignite, nor does the pilot light.
Cause: The PCB has a protective fuse that activates in case of overvoltages and cuts off the power.
Locate and check the fuse with a multimeter; if it is blown, sometimes you just need to replace it.
- 02
The boiler ignites, runs for a while, and then stops with a variable fault code.
Cause: Over time, contact faults may occur on the PCB, leading to intermittent errors.
Note the fault codes that appear; if they change unrelated to usage, it is likely that the problem is with the PCB.
- 03
The room thermostat has no effect, the boiler does not respond.
Cause: The PCB interprets the signal from the thermostat; if it fails, the command is lost even if the thermostat is functioning properly.
Bridge the thermostat terminals on the PCB; if the boiler starts, the fault is in the thermostat or its wiring.
- 04
The display flickers or turns off momentarily when moving the boiler.
Cause: A loose solder joint on the PCB can cause intermittent contact, more noticeable with vibrations.
With the boiler turned off and unplugged, gently tap the PCB and see if the fault recurs.
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 05712600 PCB.
- Catalogue reference
- 05712600
- Brand
- Saunier Duval
- Type of part
- PCBs (control boards)
- Units in stock
- 8 units
- 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.
- Fuse
- 80 mA T
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Saunier Duval Themis AS23 Manual (PDF)Document © Saunier Duval, provided as a technical reference.
Frequently asked questions about the PCB 05712600
Is this PCB compatible with my Saunier Duval Themis 23V?
What fuse does the PCB of the Saunier Duval Thema C 23 use?
Spare parts related to Saunier Duval Themis
