The door can be opened or closed during operation.

Checking method of fault code：

Press and hold the K1 key while quickly clicking the "Holiday" button 5 times (within 5 seconds), you can enter or exit the fault code query mode. In the fault code viewing mode, if there is no key operation for 120 seconds, it will automatically exit; when there is no fault, it will automatically exit after 5 seconds.

Enter the T mode：

Press and hold the K1 button and quickly click the “ECO” button 5 times (within 5 seconds), to enter the test mode; press the "Wi-Fi" button to switch to the next test mode. In the last test mode, press the "Wi-Fi" button again to exit the test mode and return to the working state before entering the test mode.