Kaisai Modbus AWHP

Monitor and control your Kaisai Air-to-Water Heat Pump directly from Homey — no cloud, no delays. This app communicates locally over Modbus TCP through an RS485-to-TCP gateway, giving you fast, reliable access to your heat pump's data and controls. What you can do: - Switch heating/cooling on or off and set operation mode (Heat, Cool, Auto) - Adjust water target temperature and DHW (hot water) target temperature - Monitor live temperatures: water outlet, water inlet, outdoor, room, DHW tank, and backup heater - Track energy usage: electrical power consumption, thermal output, and real-time COP - Monitor water flow rate - View system status: compressor, water pump, defrost cycle, and outdoor unit activity - Control DHW heating and silent mode - Get notified on errors with automatic alarm detection and error codes - Build automations with flow triggers, conditions, and actions for all key parameters Requirements: - Kaisai Air-to-Water Heat Pump (AWHP) with Modbus RTU support - RS485-to-TCP serial gateway (like Elfin EW-11 or compatible) connected to the heat pump's H1/H2 Modbus port - Homey Pro with local network access to the gateway Support & feedback: - Community forum: https://community.homey.app/t/153121 - GitHub: https://github.com/kaohlive/com.kaoh.kaisaimodbus