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1.The coil of the unit has malfunctioned and the defrosting is inaccurate. What should I do?
Answer：
(1) Check if the probe circuit is damaged. If there is a problem, replace the coil temperature probe;
(2) Check if the connector of the probe on the motherboard side is secure. If there is a problem with the connector, it is necessary to contact a professional electrician to handle the connector;
（If you have any questions, please contact the after-sales service hotline: +86-400-100-1661）
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2.What should I do if the value detected by the motherboard exceeds the limit?
Answer：
(1) Check if the probe circuit is damaged. If there is a problem, replace the coil temperature probe;
(2) Check if the connector of the probe on the motherboard side is secure. If there is a problem with the connector, it is necessary to contact a professional electrician to handle the connector;（If you have any questions, please contact the after-sales service hotline: +86-400-100-1661）
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3.Why can't the unit motherboard detect the temperature of the coil?
Answer：
(1) Check if the probe circuit is damaged. If there is a problem, replace the coil temperature probe;
(2) Check if the connector of the probe on the motherboard side is secure. If there is a problem with the connector, it is necessary to contact a professional electrician to handle the connector;
（If you have any questions, please contact the after-sales service hotline: +86-400-100-1661）
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4.How to handle the low pressure of the unit?
Answer：
(1) Check if the unit is lacking in fluorine. When the unit encounters a low-pressure fault, the first consideration is to consider whether the unit is lacking in fluorine or leaking fluorine. Generally, if electronic components are damaged and copper pipe welding is not done properly, it is easy to cause fluorine leakage, and the unit will have a low pressure warning.
(2) Check if the fins of the surface cooler are blocked. If the fins are dirty or the surface of the evaporator is severely blocked, it is easy to cause low-pressure faults, especially in the north to be careful of the attachment of willow catkins;
(3) Check if the fan is operating normally. If the fan is not operating properly, it can easily cause frost, especially in winter, which can lead to low-voltage switch failure.（If you have any questions, please contact the after-sales service hotline: +86-400-100-1661）
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5.Why did the low-voltage switch of the unit automatically disconnect?
Answer：
(1) Check if the unit is lacking in fluorine. When the unit encounters a low-pressure fault, the first consideration is to consider whether the unit is lacking in fluorine or leaking fluorine. Generally, if electronic components are damaged and copper pipe welding is not done properly, it is easy to cause fluorine leakage, and the unit will have a low pressure warning.
(2) Check if the fins of the surface cooler are blocked. If the fins are dirty or the surface of the evaporator is severely blocked, it is easy to cause low-pressure faults, especially in the north to be careful of the attachment of willow catkins;
(3) Check if the fan is operating normally. If the fan is not operating properly, it can easily cause frost, especially in winter, which can lead to low-voltage switch failure.
（If you have any questions, please contact the after-sales service hotline: +86-400-100-1661）
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6.The pressure gauge of the unit shows that the pressure is too high. What should I do?
Answer：
(1) Focus on checking whether the fan is working properly. If the fan does not rotate, it may be due to damage to the fan capacitor or relay. Simply adjust the multimeter to the resistance or on/off position for measurement to determine;
(2) If the high-voltage switch is immediately found to be disconnected after restarting, it means that the high-voltage switch itself is broken. Replace it with a new high-voltage switch;
(3) If the unit has been in use for many years and the fins are covered with dust, it may also cause high pressure protection. Simply clean with water to troubleshoot.
(4) Check the flow rate of the water pump, regularly clean the scale in the water system, and promptly clean the debris in the water circuit.（If you have any questions, please contact the after-sales service hotline: +86-400-100-1661）
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7.The pressure gauge of the unit shows that the pressure is too high. What should I do?
Answer：
(1) Focus on checking whether the fan is working properly. If the fan does not rotate, it may be due to damage to the fan capacitor or relay. Simply adjust the multimeter to the resistance or on/off position for measurement to determine;
(2) If the high-voltage switch is immediately found to be disconnected after restarting, it means that the high-voltage switch itself is broken. Replace it with a new high-voltage switch;
(3) If the unit has been in use for many years and the fins are covered with dust, it may also cause high pressure protection. Simply clean with water to troubleshoot.
(4) Check the flow rate of the water pump, regularly clean the scale in the water system, and promptly clean the debris in the water circuit.
（If you have any questions, please contact the after-sales service hotline: +86-400-100-1661）
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8.Why did the pressure gauge exceed the yellow line?
Answer：
(1) Focus on checking whether the fan is working properly. If the fan does not rotate, it may be due to damage to the fan capacitor or relay. Simply adjust the multimeter to the resistance or on/off position for measurement to determine;
(2) If the high-voltage switch is immediately found to be disconnected after restarting, it means that the high-voltage switch itself is broken. Replace it with a new high-voltage switch;
(3) If the unit has been in use for many years and the fins are covered with dust, it may also cause high pressure protection. Simply clean with water to troubleshoot.
(4) Check the flow rate of the water pump, regularly clean the scale in the water system, and promptly clean the debris in the water circuit.
（If you have any questions, please contact the after-sales service hotline: +86-400-100-1661）
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9.What should I do if the data of the device motherboard is not displayed on the display board?
Answer：
(1) In general, the installation of the controller is carried out through a long extension cable and moved to an easily visible area inside the house. At this time, it is possible to check if the extension cable of the controller is damaged;
(2) Can you check if the connector of the display signal line is firmly connected and if there is any loose or virtual connection;
(3) You can check the display board for any issues. Generally speaking, a display board has two signal lines and two power lines. If the distance between the lines is too long, the controller may not have enough power and the display board may experience flickering. Therefore, a transformer can be added at the controller position to ensure power supply, and the display will be normal.
（If you have any questions, please contact the after-sales service hotline: +86-400-100-1661）
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10.Why does the display board not receive motherboard data?
Answer：
(1) In general, the installation of the controller is carried out through a long extension cable and moved to an easily visible area inside the house. At this time, it is possible to check if the extension cable of the controller is damaged;
(2) Can you check if the connector of the display signal line is firmly connected and if there is any loose or virtual connection;
(3) You can check the display board for any issues. Generally speaking, a display board has two signal lines and two power lines. If the distance between the lines is too long, the controller may not have enough power and the display board may experience flickering. Therefore, a transformer can be added at the controller position to ensure power supply, and the display will be normal.
（If you have any questions, please contact the after-sales service hotline: +86-400-100-1661）
