PCB Boiler Saunier Duval Thema/Themis - Code B/052151H
Saunier Duval Thema/Themis presents the PCB boiler Saunier Duval Thema/Themis - 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, it locks out, or its behavior is erratic. It is compatible with models such as Themis 23, Themis AS23, and Themis C23, among others. A technician must confirm through diagnosis whether it needs to be replaced when you experience these issues to restore the normal operation of your boiler.
- Type of part
- PCBs (control boards)
- Status
- Refurbished
- Catalogue reference
- 05712600
- Warranty
- 1 year
Saunier 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
The part reference, model, and equipment revision must be verified against the manufacturer's documentation.
- 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 that require diagnosis on the PCB 05712600
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.
Do not force, hit, or bridge the component. Request a technical check according to the equipment manual before deciding on its replacement.
- 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
- Uniclima internal SKU
- PLTH8-20
- Brand
- Saunier Duval
- Type of part
- PCBs (control boards)
- Units in stock
- 8 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- Return
- 14 days
Part data and available documentation
Contrast the label codes, PCB, and revision with the installed part; they are not necessarily equivalent references.
- 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
