Your Smart AC Control V3+ shows an E03 error when it is connected to Wi-Fi but the router hasn’t transmitted an IP address to the device.
For the Smart AC Control to get an IP address, you’ll need to set up and enable your router’s Dynamic Host Configuration Protocol (DHCP). If you’re having trouble or need more help with this, please consult your router’s user manual.
Once you have activated the DHCP on your router, please restart the Smart AC Control V3+ by disconnecting the device from the power supply, waiting a few seconds and plugging it back in.
If the device still shows an E03 error, please check if you are using a MAC Filter on your router and deactivate it.
Tip: You can always control your AC directly on the Smart AC Control V3+ even when the internet connection is temporarily unavailable.You can also use your old AC remote for this.