How to connect PEGO ECP200 BASE (HVAC) with Reduxi controller
Connect the PEGO ECP200 BASE to the Reduxi Controller via Modbus RTU. You get maximum flexibility and cost and energy reductions of up to 30%.
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Photo of a light grey wall-mounted control panel with a rounded rectangular housing and a glossy reflection beneath it. Upper part: a black panel with the text 'Wide LEDs Digital Display' above a red seven-segment display showing -12.3. Below the display are status icons: power (green), sun (green), snowflake (green), fan (green), defrost (green), AUX (green text) and an alarm bulb (red). To the right are six keys: AUX, mute/silence with an up arrow, power, a grid icon, defrost/snowflake with a down arrow, and a sun icon. The text 'TeleNET' is printed under the display on the left. The 'Pego' logo is embossed on the lower right of the housing. Four screws are visible at the corners.
1 Technical documentation
Documents for the PEGO ECP200 BASE:
- PEGO ECP200 BASE documentation (PDF) – Device documentation, as linked in the original Reduxi guide.
- ECP 200 BASE4 A data sheet (PDF, Italian) – Data sheet of the control panel for cold rooms, from the distributor Arbo.
- ECP200 BASE 4 user and maintenance manual (French) – Manual on ManualsLib.
2 Required equipment
You need the following components:
- PEGO ECP200 BASE
- Reduxi Controller
- Cable for the Modbus RTU (RS485) connection
- Laptop or tablet with internet access to configure the device in Reduxi
3 Connect the PEGO ECP200 BASE to the Reduxi Controller
The PEGO ECP200 BASE has an RS485 interface that supports Modbus RTU. Reduxi reads the device through this Modbus interface, so the physical connection must be in place first.
The picture shows how to connect the Reduxi Controller and the PEGO ECP200 BASE.
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Wiring diagram combining a drawing and a photo. Left: a dashed bus line runs from the left edge. Two small boxes labelled TYPICAL CONNECTION each have terminals A and B. Next to them is a PEGO controller with a red digital display and buttons, with terminals numbered 7 and 8 at the bottom. A red wire and a blue wire run from the line to the Reduxi controller on the right (dark device with the reduxi logo, an Ethernet port and a black plug connector); the red wire and the blue wire connect to the black plug connector. A small black round symbol sits below the line near the left.
4 Log in to the Reduxi web interface
You can open the Reduxi web interface in two ways:
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Screenshot of three Reduxi mobile app screens side by side, with cyan boxes and number badges 2 to 4. Left screen (dashboard, dark theme): menu icon at top left marked with a box and badge 2; 'reduxi' logo; tabs 'Real time data' (active) and 'Statistics'; price 5.79 € and temperature 3.2 °C; energy flow diagram with a house in the centre (-1.25 kW) and icons with values 69.0 W, 1.3 kW, 1.1 kW (red ring), -165.0 W with 97 % (red ring) and 0.0 W values at the bottom; tabs 'Power' and 'Energy'; bottom navigation: Dashboard, Diagnostics, Device control, Settings. Middle screen (side menu): 'reduxi' logo, 'Number of locations: 1233', heading 'Reduxi device management', entries '+ Add Reduxi location' and 'Reduxi devices' (marked with a box and badge 3), then 'My profile' and 'About app'. Right screen (device page): Back; picture of a black Reduxi controller with two Ethernet ports; status 'Connected'; card 'Update available': 'New update is available for your Reduxi device.' with button 'Download and install update'; card 'Connect to configurator': 'Tunnel connection enables remote access to your Reduxi configurator, without need to be connected to the same local network.' with button 'Activate tunnel connection' (marked with a box and badge 4); card 'Unit details' with field 'Unit ID'.
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Screenshot made of two parts side by side. Left part: Reduxi mobile app screen on a dark background. Top: Back button; picture of a black Reduxi controller with two Ethernet ports and a terminal block; status 'Connected' with a Wi-Fi icon. Card 'Update available': 'New update is available for your Reduxi device.' with button 'Download and install update'. Card 'Connect to configurator' with a key icon: 'Tunnel connection enables remote access to your Reduxi configurator, without need to be connected to the same local network.' and button 'Open configurator', marked with a cyan box and number badge 5. Below: card 'Unit details' with a field 'Unit ID' (value not visible). Right part: Reduxi Configurator opened in a browser, marked with a cyan frame and number badge 6. Header: back arrow, 'Tunnel connection', reload icon. Left sidebar with icons (lightning, chip, lightning bolt, bar chart, gear). Page 'Home' with a green link icon. Green notice: 'New patch available. Click here to apply.' with a close X. Time 09:12:56. Energy flow diagram with a house in the centre (1.700 kW) and icons for grid (0.000 kW), solar (1.700 kW), battery (green, 0.000 kW and 0.800 kW), a device at left (0.900 kW), electric vehicle and a charger or device at bottom. Label 'Energy manager' at the bottom.
http://reduxi.local. You can find the controller's IP address in your router's device list or in the Reduxi app under Reduxi devices.admin · Password: admin (factory default)Text description of this image
Screenshot of the Reduxi Configurator login page in a Chrome browser window. The address bar shows 'Not secure' and 'reduxi.local'; the address bar is marked with a cyan box and an enlarged copy of it (cyan box, text 'Not secure reduxi.local') is shown at the left, connected by a cyan line. Page background: light grey line drawing of a house with solar panels (green), a wall box, an inverter, a car and a charger. Top left: 'reduxi configurator' logo. Login box in the centre with title 'Login', a language selector (English flag, 'English'), a username field and a password field, and a dark 'Login' button.
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Screenshot of the Reduxi Configurator web interface after login, light theme. Top left: 'reduxi configurator' logo. Header bar: 'Home' at left, green 'Connected' status at top right. Left sidebar: expanded section 'Devices' with a list of entries, then collapsed sections 'Manager' and 'Configuration' and 'Settings'. Main area: energy flow diagram. House in the centre with ring, value 24.20 kW. Grid icon at top left, 24.20 kW (red dot on its line). Solar icon at top right, value '-'. Left icon (battery or device), 6.700 kW (green dot on its line). Right icons (battery storage and a device), values '-'. EV charger icon at bottom left, 31.00 kW. A further device icon at bottom right. Label 'Energy manager' below the house.
5 Add the PEGO ECP200 BASE to Reduxi
After you connect the Reduxi Controller and the PEGO ECP200 BASE, register the device in Reduxi.
5.1 Basic settings
Log in locally to the Reduxi Configurator (see Point 4) and click the Add device button.
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Screenshot of the left sidebar of the Reduxi Configurator. Top: reduxi logo with the text CONFIGURATOR. Collapsed sections: Devices (plus icon) and Strategies (plus icon). Below, two buttons side by side: Add device (plus icon, marked with a blue highlight box) and Add strategy (plus icon). Below them two entries: Settings and Profile. The area to the right of the sidebar is empty white.
In the first step, select the basic settings:
- Device type:
HVAC - Type:
PEGO ECP200 BASE - Name: a name of your choice
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Screenshot of the Reduxi Configurator, step 1 of 3 of the add-device wizard, page title 'Basic settings'. Progress steps: 1 Basic settings (active, black circle), 2 Communication channel, 3 Advanced settings. Fields: Device type *: HVAC; Type *: PEGO ECP200 BASE; Category *: HVAC (with a clear x icon); Name *: PEGO ECP200 BASE. Buttons: Back (outlined), Next (dark).
5.2 Communication settings
The second step sets up the communication channel for Modbus RTU. It creates the link between the Reduxi Controller and the PEGO ECP200 BASE. The screenshot shows the settings.
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Screenshot of the Reduxi Configurator wizard with three steps: 1 Basic settings (black), 2 Communication channel (black, current), 3 Advanced settings (grey). Heading: Communication channel and device configuration. Connection *: Local serial port. Port *: Port 1. Baud rate *: 9600 bits/s. Data bits *: 8. Stop bits *: 1. Parity *: None. Modbus unit ID *: 1. Buttons: Back, Test communication, Next (dark).
5.3 Test communication
The Test communication button is below the communication fields. It checks whether the Modbus RTU connection between the devices works. If the test succeeds, click Done: only Done creates the device.
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Screenshot of the lower part of a Reduxi Configurator form. Modbus unit ID *: 1. Buttons: Back, Test communication (framed by a blue rectangle), Next (dark button).
The test returns one of two results:
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Screenshot of a dialog titled Test communication (close X at top right). Green text: Successful readout from device. Active power: 5810 W; Error number: 0; Error: false; H.C. 1 temp.: 48.3 °C; Import active energy: 12512100 Wh; Outdoor temp.: -3.7 °C; Return temp.: 45.5 °C; Sanitary water temp.: 44.9 °C; Supply temp.: 48.3 °C. Button: Close (dark).
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Screenshot of a dialog titled Test communication with a close x at the top right. Message in red text: Unable to communicate with device. Dark button at the bottom right: Close.
5.4 Advanced settings
Use the advanced settings only if the site has special requirements. By default, you do not change anything here.
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Screenshot of the Reduxi Configurator wizard, step 3 Advanced settings. Step indicator: 1 Basic settings, 2 Communication channel, 3 Advanced settings (all black). Heading: Advanced settings. Each question has a toggle, all set to No: Do you want to set data saving interval? No (Default: 1 min); Do you want to set reading delay? No (Default: 1000 ms); Do you want to set writing delay? No (Default: 1000 ms); Do you want to set power generation limits and capabilities? No; Do you want to set power consumption limits and capabilities? No; Do you want to limit communication with the device to read-only? No (Default: No); Do you want to invert direction for energy import and export? No (Default: No). Dropdowns: L1 is connected to main feed: L1; L2 is connected to main feed: L2. Button: Back.
6 Check the readings
6.1 Last measurements
Check the readings of the device under Device (PEGO ECP200 BASE) – Last measurement in the Reduxi Configurator.
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Screenshot of the Reduxi Configurator last measurements view with several cards. Card State name setpoint: a button row Off, Eco, On (highlighted in turquoise), Boost, Setpoint; timestamp 17. 02. 2025 16:06:17. Card Configuration, rows (all with timestamp 17. 02. 2025 16:06:17): enumeration.TEMPERATURE_DELTA_CMD 3.0 °C; enumeration.TEMPERATURE_LOWER_LIMIT_CMD 3.0 °C; enumeration.TEMPERATURE_SETPOINT_CMD 4.0 °C; enumeration.TEMPERATURE_UPPER_LIMIT_CMD 10.0 °C. Card Measurements: Communication error: ON, 17. 02. 2025 16:06:17. Card Other: Control type: MANUAL; State name setpoint: ON_AUTO (right edge slightly cut off); both with timestamp 17. 02. 2025 16:06:17.
6.2 Monitor in the Reduxi cloud
Once the device is added in the Configurator, you can monitor it in the Reduxi cloud application.
✓ Summary
Preparation (Points 1–2): Get the PEGO ECP200 BASE documentation. Prepare the Reduxi Controller, the Modbus RTU cable and a laptop or tablet.
PEGO ECP200 BASE (Point 3): Connect the device to the Reduxi Controller via Modbus RTU (RS485).
Add to Reduxi (Points 4–5): Log in to the Reduxi web interface. Add the device as HVAC type PEGO ECP200 BASE, enter the communication settings, run Test communication and click Done.
Go live (Point 6): Check the readings under Last measurement. Monitor the device in the Reduxi cloud.
→ Common issues
| Issue | Solution |
|---|---|
| Test communication fails | Check the physical Modbus RTU connection (see Point 3) and the communication settings (see Point 5, Point 5.2). |
| Open configurator does not open or stays empty | The tunnel is not active yet. Wait about 30 seconds and check that the controller is online. |
Login with admin is rejected |
The password was changed during installation. Ask the installer. The Reduxi account password does not work here. |
reduxi.local does not load |
Your device is not in the same network as the controller. Use the IP address or the tunnel connection. |
| Communication test fails, device shows offline | Check reachability, IP address / port / unit ID, and that the protocol is enabled on the device. |