Honeywell PCB Ref. 0020038693 - Hermann Micra 2/Habitat 2 and Saunier Duval
If your boiler does not start, gets blocked, or shows erratic behavior, you may need the Honeywell PCB Ref. 0020038693. This part controls the ignition, burner modulation, pump, and safety features of the boiler. Users notice operational issues when this board fails. It is compatible with models such as Hermann Micra 2 and Habitat 2, as well as some boilers from Saunier Duval. It is recommended to replace it when the mentioned symptoms are detected.
VAT included
Consult via WhatsAppHermann boilers compatible with reference 0020038693
PCB with reference 0020038693. Six confirmed compatibilities: Habitat 2 23 E and Habitat 2 24 SE.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Hermann Habitat 2 23 E | Hermann Habitat 2 | Contrasted |
| Hermann Habitat 2 24 SE | Hermann Habitat 2 | Contrasted |
| Hermann Habitat 2 28 SE | Hermann Habitat 2 | Contrasted |
| Hermann Micra 2 23 E | Hermann Micra 2 | Contrasted |
| Hermann Micra 2 24 SE | Hermann Micra 2 | Contrasted |
| Hermann Micra 2 30 SE | Hermann Micra 2 | 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 0020038693 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 0020038693. 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 0020038693 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 ignite and there are no symbols or lights on the display.
Cause: Without the control board, there is no electrical management of the equipment, so neither the display nor the other components receive commands or power.
Check the main switch, the fuse of the PCB, and the mains voltage before replacing it.
- 02
A specific fault code appears and the boiler does not reset even after multiple attempts.
Cause: The microprocessor detects the same anomaly with each attempt and blocks the ignition for safety.
Check the code in the manual: if it indicates an external component (sensor, pressure switch, gas valve), verify it before replacing the PCB.
- 03
The remote control or the programmer clock cannot communicate with the boiler.
Cause: The PCB includes the communication circuit (bus) with the control; if it fails, the dialogue is lost even if the control is functioning properly.
Test the boiler in manual mode, without the remote control connected, to see if it starts on its own.
- 04
The boiler loses the flame and goes out during combustion repeatedly.
Cause: The PCB processes the flame ionization signal; if it misinterprets it, it cuts off the gas supply even if the flame is present.
Check the ionization electrode and its wiring first, as they are the most common cause of this symptom.
Fault codes Hermann that this part solves
| Code | Fault | Diagnosis and solution |
|---|---|---|
| F.29 | The boiler loses the flame during operation. | A flame loss has been detected. This may be caused by an interruption in the gas supply or issues with the recirculation of combustion gases. If the boiler loses the flame during operation, check the PCB and the gas supply. |
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 0020038693
- Catalogue reference
- 0020038693
- 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.
- Manufacturer
- Honeywell
- Flammability classification of the material
- 94V-0
- Reference
- 0020038693
Frequently asked questions about the PCB 0020038693
What models of Hermann Micra 2 are compatible with this PCB 0020038693?
Does the reference match exactly between the Hermann Habitat 2 23 E and the Saunier Duval Habitat 2 23 E?
Spare parts related to Hermann Hermann Habitat 2
