Abnormal name: direction change of active energy (except bidirectional measurement)
Exception type: event class exception
Solution: It is recommended to check whether the wiring is correct first. For example, if the incoming line and the outgoing line are reversed, "err-56" will be prompted, and the LCD will flash a solid arrow to the left.
Extended data
Other common mistakes of smart meters
1, Err-0 1: control loop error-when the remaining amount is 0 yuan, the relay of the electric meter is disconnected, triggering the control switch to cut off power. When the switch or ammeter is abnormal, the ammeter can continue to use electricity. After reducing 1kWh, the LCD will display "err-01"; At this point, "ERR-0 1" disappears after power failure. Continue walking 1kWh, and the liquid crystal display of the electric meter shows "ERR-0 1". When users purchase electricity, they will automatically deduct the overdraft electricity fee, and "ERR-0 1" will disappear.
2.ERR-02: ESAM Err-02: ESAM, a safety chip, is faulty, so it is necessary to replace ESAM or electric energy meter for maintenance.
3.Err-03: Internal card initialization error.
4.Err-04: Clock battery voltage is low-battery voltage is low, and the LCD on the battery has the symbol "". If the meter time is lost after power failure, the meter needs to be replaced at this time.