Main PCB Biasi Rinnova Cond Plus M260V Ref. BI2445100
The Main PCB Biasi Rinnova Cond Plus M260V, with reference BI2445100, is the component that controls the ignition, the modulation of the burner, the pump, and the safety features of the boiler. When it fails, the boiler may not start, become locked, or operate erratically, displaying faults such as Er20, Er21, Er22, or Er99. This board is compatible with models from the RinNova Cond Plus range, such as the 25, 30, and 35, as well as with the Myto Condens Plus 24 and the M260V 2025SM, among others. A technician must confirm through diagnosis whether it needs to be replaced when it shows the mentioned symptoms or faults in its operation.
- Type of part
- PCBs (control boards)
- Status
- Refurbished
- Catalogue reference
- BI2445100
- Warranty
- 1 year
Biasi boilers compatible with the reference BI2445100
PCB with reference BI2445100. Five confirmed compatibilities: RinNova Cond Plus 25 and RinNova Cond Plus 30.
Verified compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Biasi RinNova Cond Plus 25 | RinNova Cond Plus | Verified |
| Biasi RinNova Cond Plus 30 | RinNova Cond Plus | Verified |
| Biasi RinNova Cond Plus 35 | RinNova Cond Plus | Verified |
| Biasi Myto Condens Plus 24 | Myto Condens Plus (Biasi) | Verified |
| Biasi M260V 2025SM | Platform M260V | Verified |
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. BI2445100 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 BI2445100. 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 BI2445100
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, there is no power or pilot light.
Cause: The PCB is not distributing power to the other components or it has lost power.
Measure if 230V is reaching the input of the PCB and check that the internal fuse is not blown.
- 02
An error code appears and it does not reset when turning it off and on.
Cause: The microprocessor detects an internal fault and locks the ignition for safety.
Note the code displayed and compare it with the manual before considering the PCB as faulty: it may indicate a specific sensor.
- 03
The thermostat requests heat but the boiler does not respond even though it seems to be receiving power.
Cause: The PCB does not process the demand signal because the input or the ignition relay is faulty.
Do not force, hit, or bridge the component. Request a technical check according to the equipment manual before deciding on its replacement.
- 04
The flame ignites but the pump does not start or the heating circuit does not heat.
Cause: The output relay on the PCB that controls that component is not working.
Measure with a multimeter if current is reaching the pump connector when it should activate before replacing the PCB.
Biasi fault codes that require diagnosis
| Code | Fault | Technical checks |
|---|---|---|
| Er20 | EVG lockout (hardware fault). | Fault in the EVG circuit on the main PCB (driver/relay/triac that controls the gas valve). Check by measuring the EVG output on the PCB during demand and ruling out wiring and gas valve. |
| Er21 | EVG lockout (hardware fault). | Fault in the EVG channel on the PCB (e.g., relay/power stage for valve control). Check activation/continuity of the EVG relay on the board and ensure the valve receives a signal with the correct wiring. |
| Er22 | EVG lockout (hardware fault). | Internal defect in the EVG electronics of the PCB causing anomalous detection and lockout. Verify EVG control signals on the PCB and rule out ionization/valving and wiring issues. |
| Er99 | Card not configured. | Main PCB unparameterized after replacement or loss of configuration. Verify by entering programming mode and configuring the model (parameter P01/Pr01) according to the manual; after coding, the error should disappear. |
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 Biasi BI2445100 PCB.
- Catalogue reference
- BI2445100
- Uniclima internal SKU
- PECBRN295X
- Brand
- Biasi
- 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
Frequently asked questions about the PCB BI2445100
Does this PCB fit a Biasi Myto Condens Plus 35?
Does this PCB Ref. BI2445100 also work for a Biasi Mia Condens Plus 25?
How can I check that this PCB is for my Biasi M260V.2025SM and not for the M260V.3035SM?
