Dimplex Heat Pump

Use cases

• Adjust heat curve HC1 from a ModbusCloud automation during a cold snap without sending a technician to the installation.
• Track compressor runtime across the year to plan service intervals before wear becomes a problem.
• Monitor status and error codes centrally across multiple Dimplex installs for remote troubleshooting.
• Shift warm water heating into the cheapest tariff window using a scheduled write to the hot water setpoint.
• Compare heat quantity across three circuits to verify hydronic balancing after commissioning.

Installation

1. 1Wire the Dimplex controller Modbus terminals to the ModbusCloud gateway RS485 channel. Check the Dimplex installation manual for the specific terminal numbers for your model.
2. 2Set Modbus address 1, 9600 baud, no parity, 1 stop bit in the Dimplex service menu (technician PIN required).
3. 3In ModbusCloud, add a Modbus RTU device matching those settings and import the Dimplex Heat Pump template.
4. 4Verify outdoor temperature reads a plausible value before trusting other registers.

Things to watch for

Registers (23)

23 read / 3 write

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