Guide

From a Hisense A/C with an AEH-W41H1 Wi-Fi module to a climate device in Home Assistant with no cloud. The pages are in the order you need them: choose the hardware, build and flash, everyday use, then troubleshooting and recovery. The developer pages and the page about the retired Matter firmware come last.

Start with the User Guide.

---

Table of contents

• User Guide
• Hardware and Wiring
• ESP32 Replacement Board
• The Stock Module
• Build Environment
• Build, Flash and Test
• ESPHome Firmware
• Everyday Control
• Entities and Diagnostics
• Climate Groups
• Troubleshooting and FAQ
• Wi-Fi Setup Mode and the Status LED
• Recovery and Reflash
• Repo Map and Build Pipeline
• Testing and QA
• Protocol Overview
• Matter Firmware (Retired)
• Converting a Stock Module from Matter to ESPHome (Moved)