Beretta Mynute Green 28 CSI PCB Ref. 20008307
Beretta Mynute Green 28 CSI Control Board Ref. 20008307 from Comelit. This control PCB manages the ignition, burner modulation, pump, and safety features of the boiler. When it fails, the boiler does not start, locks out, or exhibits erratic operation, potentially displaying fault codes AL52 or AL55. It is compatible with models from the Mynute Green range, such as the Mynute Green 25 CSI, Mynute Green 30 CSI, and others. It should be replaced when these malfunction symptoms are detected.
VAT included
Consult via WhatsAppBeretta boilers compatible with reference 20008307
PCB with reference 20008307. Eight confirmed compatibilities: Mynute Green 25 CSI and Mynute Green 28 CSI.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Beretta Mynute Green 25 CSI | Mynute Green | Contrasted |
| Beretta Mynute Green 28 CSI | Mynute Green | Contrasted |
| Beretta Mynute Green 30 CSI | Mynute Green | Contrasted |
| Beretta Mynute Green Box 25 CSI | Mynute Green | Contrasted |
| Beretta Mynute Rain Green 25 CSI | Mynute Rain Green / Rain Green | Contrasted |
| Beretta Mynute Rain Green 30 CSI | Mynute Rain Green / Rain Green | Contrasted |
| Beretta Rain Green 25 CSI | Mynute Rain Green / Rain Green | Contrasted |
| Beretta Rain Green 30 CSI | Mynute Rain Green / Rain Green | 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. 20008307 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 20008307. 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 20008307 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 respond when turning on the main switch.
Cause: The transformer on the PCB is not supplying power to the control section.
Measure the output of the transformer with a multimeter before considering the PCB as faulty.
- 02
The boiler starts but shuts down unexpectedly after a while.
Cause: An internal fault of the PCB manifests when the electrical panel heats up.
Check if the cut occurs consistently after the same operating time and if it resets when the control board cools down.
- 03
The indicators on the boiler are on, but it does not heat or produce hot water.
Cause: The PCB receives power but does not send the ignition command.
Check the connections of the thermostat or mode selector before replacing the PCB.
- 04
The domestic hot water and heating work intermittently.
Cause: A solder joint or damaged component on the PCB occasionally loses contact.
With the boiler running, gently tap the electrical panel to see if you can trigger the fault before replacing the PCB.
Fault codes for Beretta that this part resolves.
| Code | Fault | Diagnosis and solution |
|---|---|---|
| AL52 | Generic electronic anomaly | Control PCB fault: in Beretta, codes 50–59 correspond to "PCB", and in Mynute Green AL52 it appears as a generic electronic anomaly. Check voltages and outputs on the PCB and its fuse F1 (3.15 A) and rule out wiring/sensors; if it persists, the PCB is damaged and must be replaced. |
| AL55 | Anomaly due to missing boiler mode configuration (corresponding jumper absent) | The configuration jumper on the PCB (JP4/JP7 depending on version) is missing or incorrectly positioned, typical after PCB replacement or handling. Verify without power by opening the inspection cover of electrical parts and check/place the correct jumper according to the manual. |
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 20008307
- Catalogue reference
- 20008307
- Brand
- Beretta
- Type of part
- PCBs (control boards)
- Units in stock
- 1 unit
- 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.
- Transformer manufacturer (printed on the component)
- COMELIT
- Silkscreened code on the PCB (next to the high voltage symbol)
- LMU84
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Beretta Mynute Green 30 CSI Manual (PDF)Document © Beretta, provided as a technical reference.
Frequently asked questions about the PCB 20008307
Is this PCB Ref. 20008307 suitable for the Beretta Mynute Green Solar 21 RSI?
Is this PCB suitable for the Beretta Mynute Green 36 CSI?
Does the reference 20008307 appear printed on the PCB?
Is it also suitable for the Beretta Mynute Rain Green 30 CSI?
