Saunier Duval Thelia 23 PCB Ref. 050149B
The control PCB Saunier Duval Thelia 23 Ref. 050149B manages the ignition, burner modulation, pump, and safety features of the boiler. When it fails, the boiler may not start, become locked, or behave erratically. This component is compatible with the Thelia 23 boiler, among others. It is advisable to replace it if you experience operational issues or instability in the boiler.
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Consult via WhatsAppSaunier Duval boilers compatible with reference 050149D
PCB with reference 050149D. A proven compatibility: Thelia 23.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Saunier Duval Thelia 23 | Thelia | 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 part number 050149D is the one 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 050149D. If it is not visible, do not identify the part by 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 050149D 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 and there are no active indicators on the panel.
Cause: The 80 mA T fuse on the PCB may have blown, cutting off power to the control electronics.
With the boiler unplugged, check the continuity of the fuse before replacing the PCB.
- 02
The burner or the pump do not start even though the boiler requests heat.
Cause: The main relay ZETTLER AZ696-1A-24DE does not switch and does not transmit the ignition command.
Listen for the click of the relay when the heating demand is activated before declaring the PCB faulty.
- 03
The boiler operates intermittently: sometimes it starts and sometimes it doesn't.
Cause: It may be due to a worn relay contact that does not always close reliably.
Note if the fault always occurs at the same point in the ignition cycle; this helps to distinguish the relay from another cause.
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 050149D PCB.
- Catalogue reference
- 050149D
- Brand
- Saunier Duval
- Type of part
- PCBs (control boards)
- Units in stock
- 2 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.
- PCB code
- 8/050149B
- Manufacturing date
- 95/05/04
- Fuse
- 80 mA T
- Main relay
- ZETTLER AZ696-1A-24DE, 250 V 8 A, coil 24 V DC
- Corrected reference
- 050149B — the catalog mistakenly published 050149D.
Frequently asked questions about the PCB 050149D
Does this PCB work for my Saunier Duval Thelia 23 boiler?
Is the reference of the PCB for the Thelia 23 050149B or 050149D?
What fuse does the PCB of the Saunier Duval Thelia 23 use?
What relay is installed on the control board of the Thelia 23?
How can I identify that my PCB is the one for the Thelia 23 and not another version?
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