If the solar panel wires are not connected correctly, it may be due to the following reasons:
1. Poor circuit connection: Check whether the circuit connector is connected correctly and ensure that the positive and negative poles of the solar panel are connected correctly. The positive pole of the transformer is connected and the negative pole is connected to the negative pole.
2. Circuit is disconnected or damaged: Check if the circuit is disconnected or damaged. For example, the circuit is broken or damaged, causing the power to disconnect.
3. Component failure: Check if the solar panels and inverter are working properly. Use a multimeter or test instrument to check whether the current and voltage are normal.
4. Panel position problems: If the solar panel is not positioned correctly, for example if it is shaded or poorly oriented, this can cause problems aith the upper connections of the line. Check if the solar panels are getting enough sunlight.
If you have already connected solar panels and there were no problems, you can first check the possible causes above. If the problem still cannot be resolved, it is recommended to contact a professional solar technician for inspection and maintenance.