PCB CEZA ECSWS300 · C320756 for Biasi Minox 24
Application for the exact variant pending confirmation. Control PCB of the boiler. The lack of ignition, continuous errors, and operational failures have been associated with the C320788 of the Minox 24 E; those symptoms do not alone identify a fault in this unit. Before ordering it, compare its code and version with those of your PCB.
- Type of part
- PCBs (control boards)
- Status
- Refurbished
- internal SKU
- PLC334
- Warranty
- 1 year
VAT included Stock · 4 units
CEZA boilers compatible
PCB. 0 verified compatibilities. There are another 1 models that we are still checking.
Models pending verification
These models are associated with this reference, but we have not finished verifying them yet, so we do not consider them compatibleIf your boiler is one of them, send us a photo of the part you are going to replace and we will verify it before you purchase.
| CEZA Biasi Minox 24 | CEZA | Unconfirmed |
|---|
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 it is the part for your boiler
The part reference, model, and equipment revision must be verified against the manufacturer's documentation.
- Look for the code C320756 and the designation ECSWS300 on your PCB of the CEZA circuit. Our brand also Ver.4 and the date code 05/02.
- Compare version and code: there are ECSWS300 PCBs with another code (for example C320788, version 7) and sell a Biasi ECS/WS300 v4. The version alone is not enough: compare the code C320756.
- Look at the upper connector: in ours, it has 6 numbered positions 1-6. A subcomponent is marked 22 K248M and there is a capacitor of 47 µF · 25 V.
- Do not rely solely on the name of the boiler (Minox 24, 24 A, 24 E, Minox 3): compare the markings on the PCB.
- if they match, call us at 911 17 77 77 with the model of your boiler.
Symptoms that require diagnosis on the PCB
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
06E, 07E or 08E appears: anomaly in an NTC sensor.
Cause: Heating, domestic or outdoor NTC sensor faulty or with defective wiring.
Have a technician check the sensor and its connection.
Fault codes CEZA that require diagnosis
| Code | Fault | Technical checks |
|---|---|---|
| 01E | Lockout due to burner ignition fault. | Press the reset button once. If it locks again, have a technician check it: it is usually the ignition or flame detection electrode, and then the gas valve. |
| 06E | NTC sensor anomaly in heating. | Have a technician check the heating sensor and its connection. |
| 07E | Anomaly of the NTC sensor for domestic hot water. | Have a technician check the domestic hot water sensor and its connection. |
| 08E | Anomaly of the external NTC sensor. | Have a technician check the external sensor and its wiring. |
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.
Technical sheet: CEZA
- Uniclima internal SKU
- PLC334
- Brand
- CEZA
- Type of part
- PCBs (control boards)
- Units in stock
- 4 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.
- Inventory — PCB version
- Ver.4
- Inventory — Date/serial code visible
- 05/02
- Inventory — Subcomponent condenser
- 47 μF, 25 V
- Inventory — Marked subcomponents
- 22 K248M
- Inventory — Upper connector
- 6 numbered positions 1-6
- Inventory — Application indicated in inventory
- MINOX 24
- Identification — Marked code
- C320756
- Inventory data — PCB version
- Ver.4
- Inventory data — Date/serial code visible
- 05/02
- Inventory data — Subcomponent condenser
- 47 μF, 25 V
- Inventory data — Marked subcomponents
- 22 K248M
- Inventory data — Upper connector
- 6 numbered positions 1-6
- Inventory data — Application indicated in inventory
- MINOX 24
- Registered reference
- ECSWS300
- Additional markings
- Model/printing of PCB: ECSWS300; version Ver.4. Date/serial code visible: 05/02. Label on PCB/CI: C320756. Capacitor: 47 μF / 25 V. Other subcomponent marking: 22 K248M. Upper connector: 6 numbered positions 1-6.
- Pending applications to verify
- MINOX 24 — noted compatibility; pending confirmation by variant.
Before purchasing
- Do not confuse: C320788 — PCB sold for the Minox 24 E and another one labeled ECSWS300 version 7 — Another code and another version: ours is 4, C320756.
- Do not confuse: BI1855100 — Kit "regulation board 1169" in the spare parts list of Biasi — It is another kit, not the integrated CEZA board.
- Do not confuse: ECS/WS300 v4 — Refurbished Biasi ECS/WS300 v4 PCB — Another brand: shares designation and version, but the technical sheet does not mention C320756 or Minox.
- Do not confuse: 11.23.1-0.077.521-2 — Number of a used "Biasi Ideal Ecsws300" — Another brand and another number: does not mention C320756 or Minox.
- Do not confuse: 0051BP2783 — Cointra water heater PCB with ECSWS300 electronics version — It is for the water heater, not for the Biasi Minox 24 boiler.
- without additional external confirmation, refer to C320756 or ECSWS300 with the Minox. BI1885101 is a CEZA m90 kit without a model on the Biasi list; it is provided for Biasi M90 and one for the Minox 24-28 A/E. It has not been possible to link to our codes.
- Not confirmed: C320756 or ECSWS300 with the Minox. Biasi list BI1885101 (CEZA m90 kit) without model; they provide it for Biasi M90 and one for Minox 24-28 A/E. They assign ECSWS300 to Biasi and to a Cointra; send.
- Pending registered applications to confirm by model, variant, or programming: Biasi Minox 24.
Frequently asked questions about the PCB (control board)
Where is the code for this PCB and what do C320756, ECSWS300, and Ver.4 mean?
In ours, the label on the PCB shows C320756 and the circuit carries ECSWS300, the designation CEZA. It also has Ver.4 (version), 05/02 (visible date or series code), and a subcomponent marked 22 K248M. Without additional confirmation, explain that numbering: use it to compare with your PCB, not to deduce.
Is it compatible with my Biasi Minox 24?
The compatibility of this variant is pending confirmation. Registered: for the Biasi Minox 24. Without additional external confirmation consulted, not even the official manual of the Minox 24A/28A mentions C320756 or ECSWS300 with that boiler: compare the code of your PCB with C320756 before ordering it.
Is it compatible with a Minox 24 A, 24 E, Minox 3 24E or 28?
The compatibility of this variant is pending confirmation. To be confirmed: We cannot guarantee it: it has only registered the Minox 24. For the Minox 3 24E/28E and the Minox 24-28 A/E "since 09/2006," a CEZA ST7 type PCB with reference BI1885101 has been recorded, but it does not mention C320756 or ECSWS300. Please send us a photo of your PCB label and the boiler's specification plate from Contact.
Is the ECSWS300 the same as the BI1885101 or the C320788?
We have not been able to verify it. Biasi lists BI1885101 as an integrated card kit "CEZA m90" without a model; it is provided for Biasi M90B.24A/28A, M94.24CM/28CM, Garda M90F, and Riva Compact M90E, and one for Minox 24-28 A/E. None mention C320756. C320788 is provided for the Minox 24 E and another for an ECSWS300 version 7: ours is version 4.
Are there several versions of the ECSWS300 and how can I avoid making a mistake?
Yes. Ours is version 4 with C320756. It labels version 7 an ECSWS300 with another code, C320788; another sells a Biasi ECS/WS300 v4 and another a Cointra water heater PCB with ECSWS300. A third one warns that under the same reference there are different versions: it compares relays and connectors. In ours, the upper connector has 6 positions numbered 1-6.
Do you need to configure anything when installing the PCB?
According to the official manual of the Biasi Minox 24A/28A, access to the PCB is obtained by removing the front panel of the casing. When replacing the control board, it is essential to configure it for the exact type of boiler. That manual does not provide any code for the board. Please refer to the equivalent section of your model's manual.
Who should install this PCB?
It is recommended that you have it replaced by a qualified technician: it is the control PCB of the boiler and, according to the manual for the Minox 24A/28A, when replacing the board, it must be configured for the exact type of boiler. If you are not sure it is yours, call us at 911 17 77 77.
PCB CEZA ECSWS300 · C320756 for Biasi Minox 24