1, the remaining amount in the meter is sufficient, can not insert the card recharge;
2, the purchase of power card failure, you can apply for card replacement;
3, the meter failure, can not read the card correctly;
4, the energy meter number does not correspond to the power card;
5. The number of power purchases in the card is inconsistent with the number of power purchases stored in the table;
6, the key in the table has not been changed to the official key, is still a public key;
7, the card and the electricity meter contact does not correspond.
It indicates that the purchased electricity is still stored on the card. If you use this amount of electricity, please plug this card into the card energy meter to read it, and store the purchased electricity in the energy meter.