Do not turn on or off the air conditioner too quickly or frequently

When using an air conditioner, sometimes the remote control's shutdown button is pressed incorrectly, or the cooling or heating button is pressed incorrectly. After restarting or switching modes, the compressor will have to wait for a period of time before starting. Why is that? In fact, it is a 3-minute delay in starting the compressor function designed by air conditioning manufacturers in electronic control (which may vary among different products and manufacturers).

The important reason is that regardless of the reasons why the compressor stops running, there will be a high and low pressure difference in the air conditioning refrigeration system, which is directly applied to the suction and exhaust ports of the compressor. If the compressor is started at this time, it will be in a state of starting with heavy pressure. The starting current of the compressor motor is generally more than three times that of normal operation. If it is started under heavy pressure, the motor current will be higher and there is a possibility of burning out the compressor.

After the compressor stops running, the refrigeration system can balance the heavy pressure on the suction and exhaust ports by itself, which usually takes about 3 minutes. Therefore, when designing air conditioners, manufacturers will implement a 3-minute delay start protection to prevent the compressor from starting under heavy pressure and causing burnout.