12-24
Nowadays, the air energy heat pump is becoming more and more popular, which has been snapped up by consumers. Accompanied by this is the shortage of air energy professionals. Today, Gao Ermei has organized the following professional knowledge of air energy heat pump for everyone, and the air energy practitioners should pay close attention to collecting it! What is air energy heat pump? The air energy heat pump is the fourth generation water heater (the first generation is a gas water heater, the second generation is an electric water heater, and the third generation is a solar water heater). By consuming a small part of electricity to run the compressor, the air energy heat pump drives the refrigerant to circulate in the copper pipe, and continuously transports the heat source in the outdoor air to the water tank to heat the cold water heater. Unlike electric water heaters, air energy heat pumps can produce more than four times as much hot water as electric water heaters for every kilowatt hour of electricity consumed. Advantages of air energy heat pump: 1) Energy saving - energy consumption is equivalent to 1/4 of electric water heater and 1/3 of gas water heater; 2) Safety - the water and electricity of the air energy heat pump are separated, and no toxic gas is produced; 3) Comfort - The air energy heat pump has large water volume, constant water temperature, automatic operation all day long, and is not affected by the weather. Many ultra-low temperature air energy heat pumps can normally produce hot water in a low temperature environment of - 25 ℃. What size of water tank does the average family choose? According to the bathing habits of normal families, one person generally uses 50L water, and three people in a family use at least 150L water tanks. However, the air energy heat pump has the function of a central water heater, which can supply the kitchen, shower, bathtub, wash basin, etc. 8201bd7ac1483065a124510b40644b57.jpg Does air energy heat pump take a long time to heat? In fact, under the same input power, the heating speed of air energy heat pump is more than 3 times faster than that of electric water heater. Generally, the heating capacity of domestic electric water heater is 1.5~3KW, while that of air energy host is 1.5~7.2KW. In addition, the air energy heat pump can be set for regular heating, so that it can automatically produce hot water during the day and can be turned on and used at night. Is it troublesome to use air energy heat pump? can\\\'t. After the air energy heat pump is set up once, it will automatically run, and there is no need to press the key again. Users can set the timing to start, so that it can automatically run heating hot water at a specific time; It can also be set to start at a constant temperature. When the temperature of the water tank is lower than a certain set temperature, the host will start to ensure that there is always hot water in the water tank.
12-30
In recent years, air energy water heater heating projects have been widely used in northern China. However, since heat pump heating has not been promoted in the north for a long time, engineers also lack sufficient technology and experience in such projects, so that when problems occur, many people will be helpless. In view of these problems, this paper briefly introduces several common faults and solutions of air energy water heaters 1. Cause analysis of current fault A. First, test the actual current value of compressor idling for confirmation. B. The current transformer and thermal relay are adjusted too small or have quality problems. C. Too low or too high voltage causes excessive compressor current. 2. Exhaust probe failure cause A. Too little refrigerant in the system will cause too high exhaust temperature. B. Excessive refrigerant in the system will also cause excessive exhaust temperature. C. The exhaust failure is caused by the quality problem of the exhaust probe itself. D. The micro blockage of the heat pump throttling device causes high exhaust pressure and high exhaust temperature. 3. High voltage fault cause A. If the heat pump has been repaired, check whether there is too much refrigerant, which cannot be displayed when the temperature is low in winter. In summer, it will cause high pressure and high pressure protection. B. The head and flow of the circulating water pump are too small and are not equipped according to the company\\\'s requirements. C. Whether the low water level probe of the water level probe is properly installed, and the probe should be higher than the circulating water inlet. D. There is scale in the condenser (casing, high efficiency tank and plate heat exchanger for short), which causes poor heat exchange and high pressure in the system, generally due to the use of groundwater. E. The poor detection of the tap water cut-off water pressure switch will also cause a high pressure alarm. 4. Unit does not operate A. In case of power failure, disconnect the power switch and check the power supply. B. The unit power wiring is loose, find out the cause and repair. C. The fuse of unit control power supply is blown and replaced with a new one. 5. The water pump is running but the water does not circulate or the water pump is noisy A. In case of water shortage in the water system, check the system water make-up device and replenish water to the system. B. If there is air in the system, remove the air from the water system. C. If the water system valves are not fully opened, fully open the water system valves. D. The water filter is dirty and blocked. Clean the water filter. 微信图片_20211216150705.jpg 6. Low heating capacity of the unit A. If the refrigerant is insufficient, the system shall be leak checked and filled with refrigerant. B. The thermal insulation of the water system is poor, and the thermal insulation of the water system is strengthened. C. If the drying filter is blocked, replace it. D. The air heat exchanger has poor heat dissipation. Clean the air heat exchanger. E. If the water flow is insufficient, clean the water filter. 7. Compressor does not run A. Power failure, find out the cause and solve the power failure. B. The compressor contactor is damaged, replace the contactor. C. If the wiring is loose, find out the loose point and repair it. D. Overheating protection of compressor, find out the thermal cause and remove the fault before starting. E. If the outlet water temperature is too high, reset the outlet water temperature. F. If the water flow is insufficient, clean the water filter to remove the air in the system. 8. The compressor runs noisily A. The liquid agent enters the compressor, and check whether the expansion valve is invalid. B. If the internal parts of the compressor are damaged, replace the compressor. 9. Fan does not run A. The fan set screw is loose, and tighten the set screw. B. The fan motor is burnt out, replace the fan. C. If the contactor is damaged, replace it. 微信图片_20211216150654.jpg 10. The compressor runs, but the unit does not heat A. If all refrigerants leak, the system shall be leak checked and filled with refrigerant. B. The compressor is faulty. Replace the compressor. 11. Water flow protection There are generally two possibilities for water flow protection. The water system is not circulating and the water switch itself is damaged. Generally, the water flow fault is often caused by water problems. Specific troubleshooting methods: 12. Exhaust pressure is too high A. If there is too much refrigerant, discharge the excess refrigerant. B. There is non condensable gas in the fluorine circuit system, and the non condensable gas is discharged. C. If the water flow is insufficient, check the water system and increase the water flow. 13. Low suction pressure A. If the drying filter is blocked, replace it. B. If the solenoid valve is not opened, repair or replace the solenoid valve. C. If the pressure drop through the heat exchanger is too large, check whether the opening of the thermal expansion valve is proper D. The heat pump system has no refrigerant or leaks. 13. Remote controller failure/black screen A. Black screen of wire controller: first confirm whether the unit is powered, and then try to replace it with a new wire controller. The refrigeration encyclopedia official account prompts that if it is still not lit, focus on checking whether the unit\\\'s main board has output. If there is no output, it may be that the main board transformer is damaged or the main board fuse is burned out. Replace one. Of course, this situation needs more observation later to eliminate the load short circuit and avoid secondary damage to accessories. B. The wire controller reports a communication fault: report a communication fault and check whether the wiring is connected falsely. If not, it is usually a voltage problem. Focus on measuring whether the voltage is abnormal. C. Insensitivity of the remote controller: if the remote controller is not sensitive just after use, it may be that the internal wiring may resist the keys. If the remote controller is not sensitive after a period of normal use, it may need to be replaced. 14. Air switch tripping A. The air switch can not be closed: replace an air switch and ensure that the line is not falsely connected. If it is not possible, the compressor may be grounded or the main board may have a short circuit. After accurate judgment, the compressor or the main board needs to be replaced. B. Occasional tripping of the air switch: it is often caused by the false connection of the air switch line, and it is only necessary to check whether the line is firmly connected. Of course, if the air is opened in a place with high humidity, it may be affected with damp and cause tripping.
05-17
How to improve the efficiency of air energy heat pump and extend its service life? You must have such a question. Now let\\\'s follow up with our small staff of Nakstar to understand that the operation performance and service life of the irregular and effective maintenance unit will be greatly improved! 1. When the temperature is lower than 2 ℃, if the unit is stopped or power is cut off, the water in the unit pipeline must be drained in time, the power supply must be cut off, and protective measures must be taken. During re operation, the system shall be comprehensively checked and confirmed before startup. 2. The water filter installed in the unit shall be cleaned regularly according to the local water quality (preferably once a quarter) to ensure that the water quality in the system is clean and the water circulation is smooth, so as to avoid affecting the efficiency of hot water production or accidental damage due to dirty water or filter blockage and reduced water circulation. 3. Check whether the wiring of the electrical system of the unit is firm and whether the electrical components are abnormal. If any, please handle it in time. 4. Regularly check whether the water make-up, liquid level controller and exhaust device of the water system work normally, so as to avoid excessive overflow and reduction of water circulation, which will affect the heat generation of the unit and the reliability of unit operation. 5. Please keep dry operation and good ventilation around the unit. Clean the air side heat exchanger regularly (preferably once a quarter) to maintain good heat exchange effect. Do not stack sundries around the unit to avoid blocking the air inlet and outlet. Keep the unit clean and dry with good ventilation. 6. Frequently check the working condition of each component of the unit, check whether there is oil stain at the unit pipe joints and air charging valves, and ensure that there is no leakage in the refrigeration of the unit. Pay attention to check whether the water pump and waterway valve work normally, and whether there is leakage in the water pipeline and water pipe joints. 7. The scale of the water tank shall be removed after being used for a period of time (depending on the local water quality).
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Guangdong GEME Refrigeration Equipment Co., Ltd. Yue ICP Bei No. 19056255
