Identify the fault according to the symptoms: 1. Sympto […]
Identify the fault according to the symptoms:
1. Symptom: The compressor works but does not make ice. Cause: Leakage of refrigerant or damage of solenoid valve is not tightly closed.
Maintenance: Repair the leak after leak detection and add refrigerant or replace the solenoid valve.
2. Symptoms: The compressor has been working for cooling, and the water pump has been working for pumping water. The ice cubes are becoming thicker, but they cannot always enter the dehydration process to drop the ice.
Reason: The failure of the water temperature probe prevents the intelligent control system from working effectively to sense the water temperature, misjudge the program error, or the controller malfunction.
Maintenance: Use a multimeter to measure the resistance of the water temperature probe (when the water temperature in the water tank is close to 0°C, unplug the three-core wire in the control box and test the resistance of the two wires on both sides), if the resistance is lower than 27K Above, the controller is judged to be bad and should be replaced. If the resistance is lower than 27K, you need to disconnect any one of the two wires, and adjust the resistance to 27K to 28K by way of series resistance between.
3. Symptoms: The Ice Maker Machines enters the de-icing procedure (the water pump stops working, the compressor stops cooling) but the ice cubes do not fall off.
Cause: Defrost solenoid valve is damaged.
Repair: Replace solenoid valve or outer coil.
4. Symptom: The water shortage light is on but the machine does not automatically enter the water.
Cause: There is no water in the pipeline, or the inlet solenoid valve is faulty and the valve does not open.
Maintenance: Check the water intake of the pipeline. If there is no water, open the water channel and restart the machine. Replace the inlet solenoid valve if it is faulty.
5. Symptom: The compressor works but the water pump does not work all the time (no running water).
Cause: The pump is damaged or the pump is fouled or clogged.
Maintenance: Clean the pump or replace the pump.
Identify the fault according to the blinking of the indicator:
1. The power indicator keeps flashing fast and the machine does not work:
Fault: The water temperature probe is broken.
Maintenance: Open the rear cover, open the cover of the electrical control box above the compressor, find a three-core connector, check if there is any disengagement or poor contact, and reconnect it.
2.3 indicator lights flashing cyclically, the machine does not work:
Malfunction: The machine's ice making and de-icing are abnormal.
Maintenance: A. Turn off the power and restart the machine. First check whether the fans and pumps are working properly. If there are any abnormalities, remove them first, and then check whether the compressor has started. If there is no work, check the parts near the compressor. To determine the failure of the refrigeration system, follow the corresponding maintenance method.
B. If the refrigeration system is fault-free, the ice can be made normally, but the ice making has not been de-iced. After 90 minutes, the machine works abnormally and is shut down for protection. The group that needs a multimeter to measure the water temperature probe (when the underwater tank temperature is close to 0 degrees, unplug the three-core wire in the control box and measure the resistance of the two wires on both sides), if the resistance is above 27K, then If it is judged that the controller is bad, it should be replaced accordingly. If the resistance value is lower than 27K, you need to disconnect any one of the two wires, and adjust the resistance to 27K to 28K by way of jumper resistance.
3. The ice full light flashes quickly:
Fault: It means that the de-icing time exceeds the specified time, the machine is automatically protected,
Maintenance: A. Generally, restart the machine in this situation. If it occurs repeatedly, check whether the skating plate swings up and down flexibly.
B. If the two-way solenoid valve is damaged, this phenomenon will also occur. The machine can be cooled, but the ice pump reaches the set thickness and enters the de-icing state. The water pump stops working and the ice-making does not fall off. Forced de-icing during inspection, (long press and hold Select key for 3 seconds), if there is no obvious airflow sound in the ice maker, it can be considered that the two-way solenoid valve is bad, and it can be checked whether the power supply of the solenoid valve is normal. The coil test machine can be replaced, and the valve body itself cannot be opened very little.
4. There is no water in the water tank, no water shortage is displayed, and the ice cubes are loose and have impurities.
Fault: The fault is caused by impurities in the water of the water tank after multiple ice-making, or the water is rich in minerals, which makes the surface of the water level sensor scale and affects the sensitivity of the probe detection.
Maintenance: Drain the residual water to clean the inside of the water tank and clean the surface of the probe.
5. There is water in the water tank, indicating lack of water.
Maintenance: Check whether the two-core and three-core connectors in the control box are connected reliably. Re-plugging can generally solve the problem.
6. The water flowing in the water spray pipe is not smooth, and some ice cubes are not played.
Malfunction: the water spray pipe is blocked;
Maintenance: Under the control of running water, use tweezers or other sharp objects to clean the attached debris on the water outlet of the water spray pipe. Until the flow of water in each hole is smooth.
7. Ice making is normal but dehydration is difficult or not dehydration;
Fault: Two-way solenoid valve does not work or stuck;
Maintenance: After starting the ice maker, after the ice cubes are produced on the ice maker, press and hold the select key for 3 seconds to enter the forced de-icing state. Touch the solenoid valve by hand. If there is no vibration, it means that the power supply of the solenoid valve is abnormal. Check the control. Board and connecting line. If there is vibration, it can be de-iced several times repeatedly to solve the stuck problem of some solenoid valves. If the problem still exists, it means that the solenoid valve is damaged and the solenoid valve needs to be replaced.