How to solve this protection of air switch?

1. When this protection happens, the first time is to cut off all the power supplies of household appliances. After cutting off the power supply, on the one hand, it protects the household appliances, on the other hand, it can effectively eliminate the problems at the load end.

2. If the undervoltage protector still has a protection signal after all the power supplies of household appliances are cut off, you need to use a multimeter to measure the voltage. The measured voltage is normal, but the protector is still flashing, which is the problem of this undervoltage protector. Replace the new undervoltage protector and it can be used normally.

3. If the terminal voltage of the load is cut off and there is no flashing signal on the protector, it means that the load terminal is faulty, and this inspection is troublesome. To use the point-to-point method, an empty switch corresponds to an electrical appliance, one by one to check.

4. The last situation is that the above-mentioned situation of high or low household voltage should be repaired in time to eliminate the problem that the voltage of the whole building or the whole line deviates from the normal value. Because the flashing light in this undervoltage protector is a protection light, but it is not marked with undervoltage or high voltage, this flashing signal can only show that the household voltage value is not within a reasonable range. If you want to determine whether it is high voltage or low voltage, you can only use a multimeter to measure the household line voltage. If it is found to deviate from the normal value, it means that the air switch protector is not damaged, but it is just a problem that the voltage is applied to the household. If it is the problem of terminal voltage entering the household, you should contact a professional property electrician or call the power supply company for maintenance. It is not allowed to power on forcibly, so as not to damage household appliances.