Alpha Innotec Heating & Cooling Split
Monitors and controls Alpha Innotec split heat pumps via Modbus TCP.
This template connects Alpha Innotec Heating & Cooling Split heat pumps to ModbusCloud via Modbus TCP. It reads key temperatures (supply, return, outdoor, brine, hot water, room) and alarm status, and allows control of heating, cooling, hot water mode, holiday mode, and alarm reset.
- Protocol
- Modbus TCP
- Connection
- Ethernet, Modbus TCP
- Registers
- 13, read and write
- Brand
- Alpha Innotec
- Key readings
- Hot water temperature (BT7) · Room temperature (BT50) · Supply temperature (BT2) · Return temperature (BT3) · Outdoor temperature (BT1) · Brine in/out temperature (BT10/BT11)
- Available commands
- Allow Heating · Allow Cooling · Hot Water Mode · Holiday / Reset Alarm
- Last updated
Registers (13)
8 read, 5 write
| Name | Unit | Access | Address (Hidden until you enter your email) | Function (hidden) | Type (hidden) |
|---|---|---|---|---|---|
| HOT water temperature(BT7) | °C | Read | |||
| Room tempreture(BT50) | °C | Read | |||
| Alarm | Read | ||||
| Supply tempreture(BT2) | kW | Read | |||
| Return temperature (BT3) | °C | Read | |||
| Outdoor tempreture (BT1) | °C | Read | |||
| Brine in temperature (BT10) | °C | Read | |||
| Brine out temperature(BT11) | °C | Read | |||
| Allow Heating | Write | ||||
| Allow Cooling | Write | ||||
| HOT Water Mode | Write | ||||
| Holiday | Write | ||||
| Reset Alarm | Write |
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Use cases
- Monitor supply, return, and outdoor temperatures on a live dashboard to verify heat pump performance.
- Create an alert when the hot water temperature drops below a minimum threshold for early fault detection.
- Remotely switch between heating and cooling mode during seasonal changeover without a site visit.
- Activate holiday mode for a customer remotely to reduce energy consumption while the property is unoccupied.
- Reset heat pump alarms from the cloud to restore operation quickly and reduce downtime.
- Track brine inlet and outlet temperatures to detect issues with the ground loop or source circuit.
Installation
Install the Alpha Innotec Modbus Split module on the heat pump according to the manufacturer's instructions.
Connect the Modbus Split module to your ModbusCloud Gateway using a standard Ethernet cable for Modbus TCP communication.
Configure the Modbus TCP IP address and port on the Modbus Split module, and ensure the gateway and module are on the same network segment.
Import the Alpha Innotec Heating & Cooling Split template in the ModbusCloud platform and assign it to the correct gateway.
Verify that temperature readings (BT1, BT2, BT3, BT7, BT10, BT11, BT50) appear correctly on the dashboard after import.
Test a control command such as Allow Heating or Hot Water Mode to confirm write access is functioning.
Things to watch for
Do I need additional hardware to enable Modbus TCP on the Alpha Innotec heat pump?
Yes, a dedicated Modbus Split module from Alpha Innotec is required. The heat pump does not support Modbus TCP natively without this module.
Why are some register values returning zero or not updating?
Alpha Innotec has made changes to its product series, so register maps may differ between firmware versions. Verify the register documentation for your specific model and firmware. The template may be revised in the future to address these differences.
What IP address and port should I configure for Modbus TCP?
The IP address is set on the Modbus Split module. The default Modbus TCP port is 502. Ensure the module and your ModbusCloud gateway are on the same subnet and that no firewall blocks port 502.
Can I use this template for Alpha Innotec monoblock models?
This template is designed for the Heating & Cooling Split series. Monoblock units may use different registers or a different communication module. Check the Alpha Innotec documentation before applying this template to other models.
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