Hermann MicraCom Condens 24-AS/1 and 28-AS/1 PCB Ref. 0020197142
MicraCom presents the PCB Hermann MicraCom Condens 24-AS/1 and 28-AS/1, with reference 0020197142. This control board is responsible for managing the ignition, burner modulation, pump, and safety features of the boiler. When it fails, the boiler may not start, become locked, or behave erratically. It is compatible with the Condens 24-AS/1 and 28-AS/1 models, among others. A technician must confirm through diagnosis whether it needs to be replaced if these malfunction symptoms are detected.
Compatible Hermann boilers
PCB. Two confirmed compatibilities: Condens 24-AS/1 and Condens 28-AS/1.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Hermann Condens 24-AS/1 | MicraCom | Contrasted |
| Hermann Condens 28-AS/1 | MicraCom | 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 it 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 —. If it is not visible, do not identify the part by 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
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 is completely dead, with no LED lights on.
Cause: The PCB does not distribute power to its circuits, usually due to a blown fuse or a fault in the input stage.
Measure the fuse on the PCB with a multimeter for continuity before replacing the entire board.
- 02
The display shows a fault code that appears and disappears intermittently.
Cause: Internal fault of the PCB that the electronics translate into a code, not always stable.
Note the code and repeat the reset once; if it reappears the same way, it is more likely to be the PCB.
- 03
The boiler turns on and shuts off by itself a few minutes after starting.
Cause: Components of the PCB that fail when heated cause repeated safety shutdowns.
Check if the cut occurs always when cold or only with the boiler hot before changing the PCB.
- 04
The pump or the gas valve does not start even though there is a demand for heating.
Cause: A relay on the PCB does not switch and does not send current to the component.
With a tester, check if the relay provides continuity when the demand is activated before replacing the complete PCB.
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.
Hermann PCB data sheet
- Uniclima internal SKU
- PLMA061
- Brand
- Hermann
- Type of part
- PCBs (control boards)
- Units in stock
- 0 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.
- Code printed on the label
- 0020197142
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Hermann Condens 28-AS/1 Manual (PDF)Document © Hermann, provided as a technical reference.
Frequently asked questions about the PCB (control board)
Is the reference 0020197142 the one that corresponds to the PCB of my Hermann MicraCom Condens 24-AS/1?
Is this PCB compatible with the Hermann MicraCom Condens 28-AS/1?
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