aeroVent
Monitors and controls aeroVent recuperator ventilation units via Modbus RTU.
This template connects to aeroVent Reversus and Flat series recuperators via Modbus RTU. It reads temperatures, humidity, CO2 levels, fan speeds, and fault indicators. It also allows control of fan speed, operating mode, party mode, fireplace mode, and schedule settings.
- Protocol
- Modbus RTU
- Connection
- RS485, 115200 baud
- Registers
- 59, read and write
- Brand
- aeroVent
- Key readings
- Supply and exhaust temperatures · CO2 level · Humidity · Supply and exhaust fan speed (%) · Bypass status · Fault and operating status
- Available commands
- Fan speed gear selection · Party and fireplace mode · User and ECO fan speeds · Season and schedule settings
- Compatible models
- Reversus 200 · Reversus 300 · Reversus 450 · Reversus 600 · Reversus 650 · Reversus 750 · FLAT 150 · FLAT 200 · FLAT 350 · FLAT 550
- Last updated
Registers (59)
58 read, 22 write
| Name | Unit | Access | Address (Hidden until you enter your email) | Function (hidden) | Type (hidden) |
|---|---|---|---|---|---|
| Nawiew | % | Read | |||
| Wywiew | % | Read | |||
| Jaki bieg pracy | Read and write | ||||
| Temperatura nawiewu | °C | Read | |||
| Temperatura czerpni | °C | Read | |||
| Temperatura wyrzutni | °C | Read | |||
| Czujnik CO2 | ppm | Read | |||
| Rok | Read | ||||
| Czy awaria | Read | ||||
| Czy pracuje | Read | ||||
| MODB_progSeries | Read | ||||
| Temperatura wyciągu | °C | Read | |||
| Wilgotność | % | Read | |||
| Miesiąc | Read | ||||
| Dzień | Read | ||||
| Temperatura panelu | °C | Read | |||
| Czy Bypass | Read | ||||
| Bypass out | % | Read | |||
| Czy SAP | Read | ||||
| Czy IN1 | Read | ||||
| Czy IN2 | Read | ||||
| Czy ECO | Read | ||||
| Czy preheater | Read | ||||
| Czy postheater | Read | ||||
| Czy GWC | Read | ||||
| Godzina | Read | ||||
| Minuta | Read | ||||
| Czy CleanMode | Read | ||||
| Czy tryb ręczny | Read | ||||
| LeadTempSensor | Read | ||||
| Czy Lato-zima | Read and write | ||||
| Histereza lato-zima | °C | Read and write | |||
| Czy tryb party | Read and write | ||||
| Czy wietrzenie | Read and write | ||||
| Czy harmonogram | Read and write | ||||
| Czy tryb postoju | Read and write | ||||
| Temperatura załączenia zima | °C | Read and write | |||
| Czy kominek | Read and write | ||||
| S/N1-2 | Read | ||||
| S/N3-4 | Read | ||||
| S/N5-6 | Read | ||||
| S/N7-8 | Read | ||||
| S/N9-10 | Read | ||||
| User1SupFanSpeed | % | Read and write | |||
| User2SupFanSpeed | % | Read and write | |||
| User3SupFanSpeed | % | Read and write | |||
| ECOSupFanSpeed | % | Read and write | |||
| User1ExhSpeed | % | Read and write | |||
| User2ExhSpeed | % | Read and write | |||
| User3ExhSpeed | % | Read and write | |||
| ECOExhFanSpeed | % | Read and write | |||
| Czas postoju tryb ECO | Read and write | ||||
| Czas wietrzenia trybu ECO | Read and write | ||||
| Czas do przeglądu ogólnego | — | Read and write | |||
| Czas trwania trybu party | min | Read and write | |||
| Pozwolenie pracy GWC | Read | ||||
| Górny próg załączenia GWC - zima | °C | Read | |||
| Dolny próg załączenia GWC - lato | °C | Read | |||
| Clean mode manual | Write |
Loading registers…
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If a device is not in the library yet, we build the template for free as soon as we have the register data.
Use cases
- Monitor supply and exhaust temperatures and CO2 levels on a live dashboard for each ventilation zone.
- Create an alert when a fault indicator is triggered so you can respond before the customer notices a problem.
- Adjust fan speed gear and activate party mode remotely when the building occupant requests higher ventilation.
- Track humidity trends over time to verify that the recuperator maintains healthy indoor air quality.
- Switch between seasonal settings from the cloud dashboard to adapt ventilation strategy for summer and winter.
- Log bypass status and fan speeds to document system performance during commissioning or maintenance visits.
Installation
Wire the Modbus RTU connection (A and B data lines plus GND) from the ModbusCloud gateway to the COM3 port on the aeroVent recuperator.
Configure the gateway serial port to match the aeroVent default parameters: 115200 baud, 1 stop bit, no parity.
Set a unique Modbus slave address on the aeroVent unit if multiple devices share the same RTU bus.
Import the aeroVent template from the ModbusCloud template library and assign it to the correct gateway and slave address.
Verify communication by checking that live sensor readings such as supply temperature and fan speed appear on the ModbusCloud dashboard.
Confirm the board revision year of your aeroVent unit, as main boards from 2025 and newer may use a different register map than 2024 and older boards.
Things to watch for
Why am I not getting any response from the aeroVent unit?
Modbus RTU is only available on COM3 of the aeroVent recuperator. Make sure you have connected A, B, and GND to COM3 specifically, not to another port on the board.
The baud rate of 115200 seems unusually high for Modbus RTU. Is this correct?
Yes, 115200 baud with 1 stop bit and no parity is the factory default for aeroVent recuperators. Ensure your Modbus gateway supports this baud rate on its serial interface.
The register names appear in Polish. How do I know which register does what?
The aeroVent firmware uses Polish register naming. The ModbusCloud template already maps these registers to English labels, so you do not need to translate them manually.
I have a unit with a 2025 main board and some registers do not match. What should I do?
Main boards manufactured from 2025 onward may have a different register layout compared to 2024 and older boards. Check the aeroVent documentation for your board revision and verify that the template version matches your hardware.
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