Inverter is widely used in all walks of life, in various applications, the inverter will inevitably appear in water, in fact, the maintenance of water inlet frequency is very simple.           No power! Open the inverter panel, the inverter will be dry, and then hair dryer dry cold, PC display board, push plate, power device, fan, with 95% or more components will be alcohol scrub again, with a hair dryer to dry cold. After an hour, scrub it with alcohol and dry it with an electric hair dryer. Alcohol evaporates and takes away most of the moisture. Turn on the hot air (low temperature) and blow it again.           Then focus on the following elements: drying potentiometer, switch power transformers, display (keys), relay, contactor, reactor, fan (especially 220V), electrolytic capacitor, power module. Low temperature drying, must repeatedly, switching power supply transformer, contactor, power module is the key. Sometimes the modules seem dry, but there is still water inside. One day after the check, there is no damp place, and will focus on the elements of drying again. After drying, the first power must be delivered at one time, and the frequency converter is reflected. If there is no abnormal sending electricity. As long as the inverter is not connected to the water, the inverter is not bad.