... frequency conversion Dongguan VKOOL Hot Research Technology, V018 mini WOOD portable car refrigerator,car freezer,Car Fridge, car cooler, car cooler & ... fault of instructions for 500 ms for a cycle, accounting for more than 50% of the empty for pulse signal for a fault ... when boot, compressor operation, each 2 second with detection for whether for shutdown voltage. If it is shutdown voltage, the orange ...