Honeywell Module R221A For Hermann Micra 2 30 SE Boiler - Cd. 052.004.901
Electronic module with Honeywell logo printed, type Sw R221A and Honeywell code (Cd.) 052.004.901 marked on the label. It is installed as a spare part in Hermann boilers of the Micra 2, Habitat 2, and Micra Condensing series, although the actual manufacturer of the component is Honeywell and not Hermann.
VAT included
Consult via WhatsAppRenova boilers compatible with reference H052004901
PCB with reference H052004901. Four confirmed compatibilities: Habitat 2 (family confirmed with >=3 sources); codes 23 E / 24 SE only 2 sources and Micra 2 (family confirmed with >=3 sources); codes 23 E / 24 SE / 30 SE only 2 sources.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Renova Habitat 2 (family confirmed from >=3 sources); codes 23 E / 24 SE only 2 sources. | Hermann Habitat 2 | Contrasted |
| Renova Micra 2 (family confirmed by >=3 sources); codes 23 E / 24 SE / 30 SE only 2 sources. | Hermann Micra 2 | Contrasted |
| Renova Atlas (family confirmed by >=3 sources); codes 24 C / 24 F / 30 F only 2 sources. | Tiberis Atlas | Contrasted |
| Renova Oberon (family confirmed by >=3 sources); codes 18 F / 24 C / 24 F / 28 F only 2 sources. | Tiberis Oberon | 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. H052004901 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 H052004901. 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 H052004901 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
When pressing the reset button, the boiler starts for a moment and then quickly locks out again.
Cause: The PCB does not maintain a stable flame or ignition signal, which repeatedly activates the safety lockout.
Note the lock code displayed before resetting, to determine if it indicates flame, fan, or lack of water.
- 02
The screen remains blank or flickers without displaying temperature or fault code.
Cause: The circuit that powers the display is part of the PCB, and if it fails, it does not show information even though the boiler receives power.
Check that the flat cable or display connector is properly inserted before considering that the PCB is faulty.
- 03
The circulation pump does not start even though the boiler requests heating.
Cause: The PCB commands the pump to start, and a fault in its power output prevents the order from being executed.
Check if the pump rotates manually after loosening the front screw before discarding the PCB.
- 04
The boiler turns off by itself a few minutes after starting to operate in heating mode.
Cause: A fault in the control electronics can interrupt the cycle, even if the other components are in good condition.
Check that there is no fault code for temperature or pressure before attributing it to the 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.
Data sheet for the Renova H052004901 PCB.
- Catalogue reference
- H052004901
- Brand
- Renova
- 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.
- Honeywell code (Cd.)
- 052.004.901
- Type/model (Sw)
- R221A
- Low number Sw R221A
- 070641
- Manufacturing date (Date)
- 0307
- The actual manufacturer of this module is Honeywell; the logo is printed on the piece itself, although it is sold as a spare part for Hermann boilers.
Frequently asked questions about the PCB H052004901
Is the Honeywell R221A Cd. 052.004.901 module compatible with the Hermann Habitat 2 28 SE?
Who manufactures the Honeywell R221A module for my Micra 2 30 SE boiler?
What should I look for on the label to confirm that I have the correct module for my boiler?
Is this module also compatible with the Hermann Micra 2 23 E?
How many models are compatible with the Honeywell R221A module?
What is the reference for the Honeywell module for the Hermann Micra 2 30 SE boiler?
Spare parts related to Renova Hermann Habitat 2
