PCB Manaut Micon 24E / Minox
If your boiler does not start, locks out, or exhibits erratic behavior, a technical diagnosis must confirm whether you need the Biasi PCB Micon 24E / Minox. This part is responsible for controlling the ignition, burner modulation, pump, and safety features of the boiler. It is installed in the Micon 24E boiler, among others. The need for replacement of this PCB must be confirmed through diagnosis when faults in operation are detected that prevent the proper start of the boiler.
- Type of part
- PCBs (control boards)
- Status
- Refurbished
- Catalogue reference
- C320788
- Warranty
- 1 year
Biasi boilers compatible with reference C320788
PCB with reference C320788. A proven compatibility: Micon 24 E.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Biasi Micon 24 E | Micon | 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. C320788 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 C320788. 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 C320788
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 to anything: no indicators, no display, it doesn't start for either heating or domestic hot water.
Cause: The PCB is dead and does not distribute power to the rest of the circuit.
Before changing the PCB, measure with a multimeter that 230V is reaching the input and check the fuse on the board itself.
- 02
The burner tries to ignite, you can hear the spark, but the boiler locks out immediately and needs to be reset.
Cause: The microprocessor on the PCB does not receive or interpret the flame signal correctly and shuts down for safety.
Write down the exact fault code displayed on the screen before ruling out the PCB; it might point to the flame sensor, not the electronics.
- 03
The wall control or thermostat is not able to start the boiler, even though it has batteries and appears to be on.
Cause: The PCB has stopped communicating with the thermostat.
Do not bridge contacts or power components directly to test them. Request a technician to check the cause according to the model manual and its revision, without bypassing the protections. The symptom or fault code does not confirm on its own that this part is faulty.
- 04
The boiler runs for a while and then stops on its own, without a fixed pattern, and sometimes starts up again by itself.
Cause: A power component of the PCB (relay or triac) degrades with heat and fails intermittently.
Check that fans and pumps rotate freely and do not strain the PCB due to friction before considering it faulty.
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 PCB C320788
- Catalogue reference
- C320788
- Uniclima internal SKU
- PLMON24E
- Brand
- Manaut
- Type of part
- PCBs (control boards)
- Units in stock
- 5 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.
- Integrated circuit code
- C321001
- Transformer code
- TS06 / 929
- Without external sources confirming manufacturer, reference, or equivalences.
Frequently asked questions about the PCB C320788
Does this PCB work for a Micon 24 E?
How many models are compatible with this PCB?
What fault codes does this PCB have?
Can I use this PCB in other boilers from the Minox range?
Where can I find the reference for this PCB?
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