PCB Beretta Sylber Style Basic 25 S Ref. 20177589
The control PCB governs the ignition, burner modulation, pump, and safety features of the boiler. If it fails, you will notice that the boiler does not start, locks out, or behaves erratically, potentially displaying the fault codes COM, E056, or FWER. This part is compatible with several models, including those from the Style range such as the Basic 25 S, among others. The confirmed manufacturer reference is 20177589. It is recommended to replace it when experiencing operational issues or communication errors.
VAT included
Consult via WhatsAppBeretta boilers compatible with reference 20177589
PCB with reference 20177589. Five confirmed compatibilities: Green 25 CSI and Green 25 CSI.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Beretta Green 25 CSI | Junior | Contrasted |
| Beretta Green 25 CSI | Quadra | Contrasted |
| Beretta Basic 20 SR | Style | Contrasted |
| Beretta Basic 25 S | Style | Contrasted |
| Beretta Basic 29 S | Style | 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 ref. 20177589 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 20177589. 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 20177589 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 locks up when starting, and the reset does not solve anything.
Cause: The microprocessor detects an internal fault and repeatedly cuts the cycle for safety.
Count the diagnostic indicator flashes before replacing the PCB; they usually indicate the cause of the lockout.
- 02
The display or indicators do not turn on at all.
Cause: The power supply stage of the PCB may fail, which is the first component that provides power to the rest of the circuit.
Measure with a multimeter if mains power is reaching the input of the PCB before replacing it.
- 03
The room thermostat cannot get the boiler to start even though it is calling for heat.
Cause: The PCB is not processing the demand because its signal input has failed.
Manually bridge the thermostat input on the PCB to see if it starts without it.
- 04
The boiler turns on and off by itself every few minutes, repeatedly.
Cause: An intermittent fault in the PCB causes the control to cut off the supply even though the rest of the components are working fine.
Check if the shutdown coincides with the use of domestic hot water or heating, to rule out another component.
Fault codes for Beretta that this part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| COM | Loss of communication with the appliance PCB (more than 30 s). | Fault in the main PCB or its interface prevents communication with display/keyboard or BUS; check voltages on the PCB (5/12/24 V), wiring, and communication connectors; if it persists, reprogram or replace the PCB. |
| E056 | Lack of communication with the microprocessor board. | Fault in the control board (microcontroller/PCB) or its internal bus; check power supply and connectors on the PCB, and if communication is not restored, reprogram or replace the board. |
| FWER | Incompatible firmware version. | After replacing the PCB, the firmware of the PCB is not compatible with that of the interface/system; verify versions and load the correct firmware or install a PCB with the appropriate revision. |
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 Beretta PCB 20177589
- Catalogue reference
- 20177589
- Brand
- Beretta
- Type of part
- PCBs (control boards)
- Units in stock
- 1 unit
- 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.
- manufacturer of the mounted relays
- Panasonic (relay component brand, not necessarily the complete PCB manufacturer)
Frequently asked questions about the PCB 20177589
Do the Panasonic relays seen on the PCB indicate that it is a Panasonic PCB?
Is this PCB suitable for the Beretta Quadra Green 25 CSI?
When should this PCB for the Style Basic 20 SR be replaced?
Is the same PCB used for the Junior Green 25 CSI and the Quadra Green 25 CSI?
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