Home central air-conditioning service life how? Long service life. Home central air conditioning is very mature and stable product quality Xi'an central air-conditioning manufacturing, life is much longer than the traditional split air-conditioning, the whole machine life of up to 15 years. The sale of equipment to implement the national standard machine warranty from one to three years, three to five years compressor warranty and lifetime maintenance. Central air-conditioning system is usually divided into two chilled water and cooling water systems, chilled water system is divided into cooling mode and heating mode Xi'an central air conditioning installation, these two modes are controlled by the inverter Xi'an central air conditioning, given below find out more: [1] closed loop cooling mode control system chilled water pumps in the program to ensure that the case of the terminal equipment supplied chilled water flow, to determine the minimum operating frequency of a frozen pump drive to work, set it to lower frequency and locked, frequency chilled water pump frequency adjustment is installed on the chilled water system backwater competent chilled water temperature sensor detects the return water temperature, and then through the temperature controller set temperature to increase or decrease the frequency inverter control. [2] heating mode chilled water pump system, closed-loop control of the mode control scheme is in the central air conditioning heat pump operation (ie heating) when chilled water pump system. As with the cooling mode control scheme, to ensure end-device flow of chilled water supply situation Xi'an central air-conditioning manufacturers, to determine a minimum operating frequency pump inverter refrigeration work, set it to lower frequency and locked, frequency chilled water pump frequency adjustment is installed on the chilled water system backwater competent chilled water temperature sensor detects the return water temperature, and then through the temperature controller set temperature to control the frequency inverter decrease. Central air-conditioning company _ Xi'an Xi'an Hao Electrical and Mechanical Services (certification) _ Xi'an Xi'an Hao central air conditioning is provided by the Electrical and Mechanical Technology Limited. Xi'an Hao Electrical and Mechanical Technology Co., Ltd. (www.029hfkt.com/)(www.029hfkt.com) is Xi'an, central air conditioning leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum to meet customer needs. Xi'an Hao Electrical and Mechanical Services leadership with the staff warmly welcome all inquiries negotiations to create the Electrical and Mechanical Xi'an Hao better future.