1. The power indicator light keeps flashing rapidly. The machine is not working: Fault: The water temperature probe is detected as open circuit. Repair: Open the rear cover, open the electrical control box cover above the compressor, find a three core connector, check for any detachment or poor contact, and plug it in again. 2. Three indicator lights cycle flashing, the machine is not working: Fault: The machine's ice making and deicing are not normal. Repair: A. Cut off the power supply and restart. First, check whether the fan and water pump are working properly. If there are any abnormalities, troubleshoot them first, and then check whether the compressor has started working. If there is no work, check the parts near the compressor. If it has started, determine the refrigeration system fault and follow the corresponding repair methods. B. If there is no malfunction in the refrigeration system and the ice can be made normally, but the ice is still being made without deicing, the machine will be shut down for protection after 90 minutes due to abnormal operation. It is necessary to use a multimeter to measure the composition of the water temperature probe (when the temperature of the underwater box is close to 0 degrees, unplug the three core wires inside the control box and measure the resistance of the two wires on both sides). If the resistance is above 27K, it is judged that the controller is faulty and should be replaced accordingly. If the resistance value is below 27K, either of the two wires needs to be disconnected, and the resistance should be adjusted to between 27K and 28K by bridging the resistance. 3. Ice Full Light Flashes Quickly: Fault: Indicates that the deicing time has exceeded the specified time, and the machine automatically protects. Maintenance: A. Generally, in this case, restart the machine. If it repeatedly occurs, check whether the skating board swings up and down flexibly. B. If the two way solenoid valve is damaged, this phenomenon can also occur. The machine can cool, but when the ice reaches the set thickness and enters the de icing state, the water pump stops working and the ice making does not fall off. During inspection, the ice is forcibly de icing (hold down the selection button for 3 seconds). If there is no obvious airflow sound inside the ice maker, it can be considered that the two way solenoid valve is damaged. Check whether the power supply to the solenoid valve is normal. The coil can be replaced for testing, and the valve body itself cannot be opened very little. 4. There is no water in the water tank, indicating a lack of water. The ice cubes are loose and contain impurities. Fault: This fault is due to impurities left in the water tank after multiple ice making, or the water is rich in minerals, which causes scaling on the surface of the water level probe and affects the sensitivity of the probe detection. Repair: Drain residual water and clean the inside of the water tank, and clean the surface of the probe. 5. There is water in the water tank, indicating a shortage of water. Repair: It is necessary to check whether the connectors of the two and three cores in the control box are reliably connected. Reinserting can generally solve the problem