There may be many reasons why the external unit of the cabinet air conditioner does not work, including power supply problems, voltage problems, circuit board failures, compressor problems, and so on. The following will analyze these possible causes in detail:<\/p>\n\n\n\n

1. Check whether the power supply circuit of the indoor and outdoor units is normal, and whether the power cord and the connection line of the internal and external units are aging or in poor contact.<\/p>\n\n\n\n

Second, the power supply problem<\/p>\n\n\n\n

1. If the voltage is too low, the air conditioner may not start normally. The starting voltage of fixed frequency air conditioners usually needs to reach 180 volts, while frequency conversion air conditioners need 220 volts.<\/p>\n\n\n\n

2, in the peak period of electricity consumption, the voltage may drop briefly, causing the external machine to start difficult or stop working, you can wait until the voltage returns to normal and try again.<\/p>\n\n\n\n

3, three-phase air conditioning, phase sequence error, will cause the external machine does not work. Three, circuit board failure<\/p>\n\n\n\n

1, the air conditioning circuit board is one of the core components, once the failure, will directly affect the operation of the external machine.<\/p>\n\n\n\n

2, disassemble the indoor unit, find the circuit board, check whether the circuit is disconnected, whether the contacts are stuck together, or whether the coil is burned out.<\/p>\n\n\n\n

Four, the compressor problem<\/p>\n\n\n\n

1, the compressor is the core part of the air conditioning unit, if the compressor or its starting capacitor is damaged, it will cause the external unit to not work.<\/p>\n\n\n\n

2, hear the compressor \"buzzing\" sound but can not start, may be the start capacitor failure, need to replace the same type of capacitor.<\/p>\n\n\n\n

Five, refrigerant leakage:<\/p>\n\n\n\n

1, the amount of refrigerant (freon) is a certain limit, too much or too little will affect the normal work of the air conditioner, may lead to high pressure protection switch trip, the external machine stop working.<\/p>\n\n\n\n

2, check the refrigeration system whether there is leakage phenomenon, and add refrigerant. Six, condenser dirty blockage:<\/p>\n\n\n\n

1. The outdoor condenser is dirty and blocked, which will affect the heat exchange and trigger the self-protection system, causing the external machine to stop working. Regular cleaning of outdoor condenser is a necessary maintenance step.<\/p>\n\n\n\n

Seven,\u00a0poor\u00a0installation:<\/p>\n\n\n\n

If the air conditioner is improperly installed, such as the bending of the connection pipe or the high temperature\u00a0caused\u00a0by\u00a0the\u00a0sunrise\u00a0of\u00a0the\u00a0outdoor\u00a0unit,\u00a0it\u00a0will\u00a0affect\u00a0the\u00a0normal\u00a0operation\u00a0of\u00a0the\u00a0external unit.<\/p>\n\n\n\n

In summary, there are many reasons why the external unit of the cabinet air conditioner does not work, including power supply problems, insufficient voltage, circuit board failure, compressor damage, refrigerant leakage, condenser pollution and improper installation. By carefully checking and eliminating these possible causes one by one, it is generally possible to find and solve the problem.<\/p>\n\n\n\n

If your own inspection is fruitless, it is recommended to contact a professional maintenance personnel to solve the problem.<\/p>\n\n\n\n

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