Novelan Heating & Cooling
Controls Novelan heat pumps for heating and cooling via Modbus TCP.
This template connects Novelan heat pumps to ModbusCloud via Modbus TCP. It reads temperatures, operating hours, and system states while allowing control of heating, cooling, and warm water operation modes and target temperatures.
- Protocol
- Modbus TCP
- Connection
- Ethernet, Modbus TCP
- Registers
- 15, read and write
- Brand
- Novelan
- Key readings
- Outdoor temperature · Flow and return temperatures · Buffer temperatures (top/bottom) · Warm water tank temperature · Heatpump operating hours · Heatpump system state
- Available commands
- Heating operation mode · Cooling operation mode · Warm water operation mode · Warm water tank target temperature
- Compatible models
- Helox · LAD · LADV · LAV · LA · LAP · SICV · SIC · SI · SIP · Polaris · LICV · LIV · LI/HV · LI · WSV
- Last updated
Registers (15)
14 read, 6 write
| Name | Unit | Access | Address (Hidden until you enter your email) | Function (hidden) | Type (hidden) |
|---|---|---|---|---|---|
| Actual Heatpump Flow temperature [TVL] | °C | Read and write | |||
| Actual Heatpump Return temperature [TRL] | °C | Read | |||
| Acutal Buffer temperature sensor bottom [TRLext] | °C | Read and write | |||
| Actual Warm Water tank temperature [TBW] | °C | Read | |||
| Actual Buffer temperature sensor top [TB2] | °C | Read | |||
| Actual Heatpump Source temperature [TWE] | °C | Read | |||
| State Heatpump Operating Hours | h | Read | |||
| State Heatpump System | Read | ||||
| Actual Outdoor temperature [TA] | °C | Read | |||
| State Warm Water tank Target temperature | °C | Read and write | |||
| State Buffer temperature Target temperature | °C | Read | |||
| State Heating Operation mode | Read and write | ||||
| State Cooling Operation mode | Read and write | ||||
| Actual Flow temperature HC2 [TB1] | °C | Read | |||
| Warm water operation mode | Write |
Loading registers…
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Use cases
- Monitor outdoor, flow, return, and buffer temperatures of a Novelan heat pump on a live cloud dashboard.
- Set heating, cooling, and warm water operation modes remotely without visiting the installation site.
- Create an alert when warm water tank temperature drops below the configured target for more than 15 minutes.
- Track heat pump operating hours over time to plan preventive maintenance intervals.
- Adjust warm water target temperature remotely based on seasonal demand or occupancy schedules.
- Detect abnormal system states and notify the end customer or service team automatically.
Installation
Purchase the Modbus TCP license USB stick from your Novelan partner and install it in the heat pump controller.
Download and run the Novelan GLT software to activate the Modbus TCP server on the WPR-C controller.
Connect the ModbusCloud Gateway to the same local network as the Novelan heat pump.
Note the IP address and Modbus TCP port configured on the heat pump controller.
Import the Novelan Heating and Cooling template in the ModbusCloud platform and enter the IP address and port of the heat pump.
Verify that temperature readings and system state appear correctly on the ModbusCloud dashboard before leaving the site.
Things to watch for
Why can I not connect to the Novelan heat pump over Modbus TCP?
The Modbus TCP server is not enabled by default. You need to purchase a USB stick with a license from a Novelan partner and use the Novelan GLT software to activate the server on the WPR-C controller.
Can I use Modbus RTU instead of Modbus TCP?
No. The Modbus RTU interface on Novelan heat pumps is reserved for internal service purposes. This template uses Modbus TCP only.
My Novelan model does not show cooling controls. Is the template wrong?
Some Novelan models support heating only and do not offer a cooling mode. The cooling registers will not respond on those units. This is expected behavior.
What network configuration is required for the gateway?
The ModbusCloud gateway and the Novelan heat pump must be on the same local network or have a routed connection. Ensure no firewall is blocking the configured Modbus TCP port between the two devices.
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