PCB Hermann Micraplus Condens 25-A / Saunier Duval Semia Condens 25-A Ref. 0020197142
When you turn on the tap or activate the heating, the Hermann Micraplus Condens 25-A / Saunier Duval Semia Condens 25-A PCB (control board) is responsible for controlling the ignition, the modulation of the burner, and the safety features of the boiler. If it fails, you may notice that the boiler does not start, gets locked, or operates erratically, with possible faults such as F.61, F.62, F.63, F.64, or F.65. This board is compatible with models such as Thelia Condens 25-A, Semia Condens 25, and Semia Condens 30, among others. It is recommended to replace it when the mentioned symptoms or fault codes are detected.
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Consult via WhatsAppHermann boilers compatible with reference 0010047388
PCB with reference 0010047388. Three confirmed compatibilities: Thelia Condens 25-A and Semia Condens 25.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Hermann Thelia Condens 25-A | Thelia Condens | Contrasted |
| Hermann Semia Condens 25 | Semia Condens | Contrasted |
| Hermann Semia Condens 30 | Semia Condens | 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 the reference 0010047388 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 0010047388. 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 0010047388 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 turn on when the switch is pressed.
Cause: The PCB distributes power to the other components; if it is damaged, it does not send current to anything.
Check the main fuse of the house and the one on the PCB before replacing it.
- 02
A communication or sensor fault code appears, but the sensor works well with a multimeter.
Cause: The circuit of the PCB can incorrectly interpret a correct signal and display a fault that does not originate from the sensor.
Measure the sensor with a multimeter and compare the value with the manufacturer's resistance table before discarding the sensor and checking the PCB.
- 03
The boiler does not prioritize domestic hot water and heating correctly, or it activates both functions at the same time when it shouldn't.
Cause: The PCB determines which circuit has priority at any given moment; a fault in its control logic can disrupt that distribution.
Check that the three-way valve, if the boiler has one, moves physically when receiving the command, before assuming that the problem is the PCB.
- 04
The boiler responds with a delay or intermittently to the timer.
Cause: The PCB manages the programmed on and off commands; a fault in its electronics can delay or lose those commands.
Compare the operation in manual mode, without programming, to see if the delay disappears and thus determine if the issue is with the PCB or the programmer.
Fault codes Hermann that this part solves
| Code | Fault | Diagnosis and solution |
|---|---|---|
| F.61 | Error: gas valve control | The driver/output of the valve control on the main PCB can fail (defective electronics), causing detection of shorts or anomalous control. Check the power supply and wiring to the valve; if there is an incorrect control signal with wiring and valve OK, the PCB is damaged. |
| F.62 | Error: gas valve disconnection controller | The PCB electronics may not shut off the gas valve in time or may misinterpret the flame signal (defective electronics). Check the valve closure and flame signal; if the issue persists with the correct valve and electrodes, replace the PCB. |
| F.63 | Error: EEPROM | Fault in the EEPROM memory integrated into the main PCB, preventing correct reading/writing. Check for stable voltages and, if the fault persists after a factory reset, replace the PCB. |
| F.64 | Fault: PCB / sensor / analog to digital transformer | Fault in the A/D circuit of the PCB (control board) that interprets NTC/analog inputs. First, rule out shorts in the NTC and wiring; if readings remain erratic with standard resistors, the PCB is faulty. |
| F.65 | Error: electronics temperature too high | The internal sensor/thermistor or the control stage of the PCB detects overheating or a fault (electronics failure). Check ventilation and ambient temperature; if normal and the error persists, the sensor/control stage of the PCB is damaged. |
| F.67 | Incorrect value returned by ASIC (flame signal) | The ASIC circuitry/flame detection on the PCB may return implausible values (electronics fault). Check ionization, electrode, and ground; if ionization µA are correct and it fails, replace the PCB. |
| F.70 | Invalid product code (DSN) | After replacing the main PCB and/or display without reparameterizing the DSN, the boiler detects an invalid combination. Verify and reconfigure the DSN according to the service manual; if it does not accept coding, the PCB is incorrect/defective. |
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 PCB Hermann 0010047388
- Catalogue reference
- 0010047388
- Brand
- Hermann
- 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.
- PCB code
- 0020197142
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Hermann Thelia Condens 25-A Manual (PDF)Document © Hermann, provided as a technical reference.
Frequently asked questions about the PCB 0010047388
Is this PCB PECMC25A compatible with the Hermann Micraplus Condens 25-A?
Does the PECMC25A PCB work for the Saunier Duval Semia Condens 25?
Can I use the PECMC25A PCB in the Saunier Duval Thelia Condens 25-A?
What fault codes are compatible with the PECMC25A PCB?
How many models are compatible with the PCB PECMC25A?
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