## Introduction to Xiaomi Home Assistant
The Xiaomi Home Assistant is a smart home system that integrates various devices, including air conditioners, to provide a seamless and automated living experience. However, like any other technology, it is not immune to issues. This article focuses on a specific problem related to the air conditioner companion control panel, where the mode selection is lost, and only the 'off' option is available.
## Understanding the Issue
The problem presents itself when the air conditioner companion control panel in the Xiaomi Home Assistant system loses its mode selection options. Instead of being able to choose from various modes such as automatic, heating, cooling, fan, and dehumidification, the user is left with only the 'off' option. This issue not only affects the local control panel but also reflects in the HomeKit integration, causing discrepancies in the expected functionality.
## Reproducing the Issue
To understand and potentially resolve the issue, it's crucial to follow the steps that lead to the problem:
1. **Fresh Installation or Update of the Integration**: The issue arises after either installing or updating the Xiaomi Home Assistant integration.
2. **Adding an Account with Air Conditioner Companion Device**: The account added to the system must have access to an air conditioner companion device for the issue to occur.
3. **Viewing the Air Conditioner Companion Entity**: Upon clicking to view the air conditioner companion entity, the mode selection is found to be missing, with only the 'off' option available.
## Expected Behavior
Normally, the air conditioner companion control panel in the Xiaomi Home Assistant should display all available modes, including:
- Automatic
- Heating
- Cooling
- Fan
- Dehumidification
This variety in mode selection allows users to tailor their air conditioner's operation to their specific needs and environmental conditions.
## Troubleshooting Steps
Given the nature of the issue, troubleshooting involves checking the system logs for any errors related to the air conditioner companion device or the HomeKit integration. The logs can provide valuable insights into what might be causing the mode selection to disappear.
## System Information
- **Reproduce Time**: The issue was first noticed on 2025-06-26 20:30:12.
- **Home Assistant Logs**: Logs have been sent to [email protected] for further analysis.
- **Log Timezone**: The logs are based on the Asia/Shanghai timezone.
- **Home Assistant Core Version**: The system is running on version 2025.6.3.
- **Home Assistant Operation System Version**: Also version 2025.6.3.
- **Xiaomi Home Integration Version**: The integration is at version v0.3.3.
## Conclusion
The mode loss issue in the air conditioner companion control panel of the Xiaomi Home Assistant system is a significant problem that affects the usability and functionality of the smart home system. By following the troubleshooting steps and analyzing the system logs, users and developers can work together to identify the root cause and implement a fix. This not only resolves the current issue but also contributes to the overall improvement and reliability of the Xiaomi Home Assistant and its integrations.