As one of the necessary household appliances in many families, the air conditioner has many components, and almost every part is indispensable. For example, whether the external unit of the air conditioner can operate normally determines the actual use of Experience and effect, so for ordinary friends or professional maintenance personnel, it is necessary for us to master the operation knowledge of the external unit of the air conditioner and the maintenance and treatment of relatively common faults, etc. What I bring to you today is the external unit of the air conditioner related information.
1. Reasons and solutions for the external unit of the air conditioner not turning
(1) The reason why the external unit of the air conditioner does not turn
1. Sudden power failure: If the home suddenly loses power and the outdoor unit of the air conditioner does not turn on, then we need to check whether the incoming electricity from the indoor unit and the outdoor unit is normal, because the indoor unit and the outdoor unit are connected by AC contactors.
2. Condenser failure: Generally, the failure of the air conditioner is mostly due to the damage of the condenser. The outdoor condenser also has its own self-protection system. When it is not cleaned regularly, it will activate its own protection system. So in order to cause unnecessary trouble, we try to clean it regularly as much as possible.
3. Leakage of freon: There is a limit to the amount of freon. Too much or too little will cause the air conditioner to work abnormally. At this time, the self-protection system of the air conditioner will automatically switch on and off for high-voltage protection to protect itself.
4. The computer board is faulty. The operation of the outdoor unit is controlled by the computer board, so when the outdoor unit is not running, there may be a failure of the computer board; the compressor and the outdoor unit are burnt out. It will also cause the external unit to not work. Ask professional maintenance personnel to come to check and repair.
(2) The solution to the problem that the external unit of the air conditioner does not turn
The evaporator and condenser of the air conditioner are dirty and blocked, which will significantly reduce the cooling effect, and even cause no cooling. Some users often think that this phenomenon is due to lack of fluorine, so they send it to the repair department for repair. Users should pay attention to the regular cleaning and maintenance of the air conditioner. maintenance work.
Remove the transformer, measure the resistance of the primary coil, and the secondary resistance is normal. Obviously, the primary coil of the transformer has been damaged. After replacing the transformer with a new one, connect the power supply, the power indicator light is on, and the machine works normally.
2. Air conditioner fan wiring
Installation Precautions:
1. On-hook swing wind connection method: Usually, the red line on the swing wind motor socket is 12V power supply. When plugged into this board, the 12V line should be close to one side of the pin (make the other side empty). When the power is on, the swing leaves should have the action of closing the air outlet. If the action is in the opposite direction when the power is on, just turn the plug on the other side and plug it in. If the swing leaf continues to rotate after being closed in place, a screw can be screwed on the plastic case at the lower part of the swing leaf to stop the positioning.
2. If the internal fan is an electronic speed control type, you can add capacitors C1 and C2 according to Figure 2 to adjust the medium and low wind.
3. If there are only two windshields for the internal fan, you can connect the high and middle control lines together to connect the high windshield according to Figure 3.
4. The emergency start button on the control panel has a delay function for anti-interference, and it takes one second to work after being pressed.
5. The remote control receiver should be far away from the control board itself and try to avoid strong light to avoid interference.
The air conditioner external unit is very important for air conditioner products. There are many common faults about it. For example, the air conditioner external unit does not rotate, which is a problem that interferes with the normal use of users. There are many reasons for this situation, and we need to consider the actual situation in order to master the most appropriate operation steps. The above introduction also includes the wiring steps of the external unit of the air conditioner. The information in this section is the professional knowledge suitable for professional maintenance personnel.
Fault introduction and wiring method of air conditioner external fan
