Xuzhou 圣尔达 Refrigeration Electrical Services Ltd heating and air conditioner heating and cooling regulator failure Reason 1: solenoid valve coil Troubleshooting: measuring solenoid valve coil of central air conditioning telephone Xuzhou lease with a multimeter, if the case of the coil circuit or burned central air conditioning, should be replaced with a new solenoid valve specifications Reason 2: Electric heating device Troubleshooting: Check Xuzhou recycle used central air conditioning prices with a multimeter, the replacement of electric heating wire of the same size or temperature protector Reason 3: Temperature controller failure to exclude: use a multimeter to check the thermostat, to make contact after sewage treatment, such as rust is still invalid Xuzhou central air conditioning cleaning, replace the same specification temperature controller Xuzhou 圣尔达 Refrigeration Electrical Services Limited ☆ how to check the appearance of the quality of the air conditioner When the purchase of air conditioning, air conditioning should first check the appearance of quality: 1) air conditioner should be consistent with national standards, dimensions specifications are met; 2) air conditioner black metal should be no significant rust and corrosion; 3) plating surface should be smooth, uniform color ; 4) pieces or spray painted surface should not have obvious bubble; 5) decorative plastic surface should be smooth, uniform color; 6) air conditioner no missing parts and wear parts; 7) a list of the control box, No missing accessories; 8) manual, certificate and repair kits and other information alone may not be missing. Xuzhou central air conditioning cleaning, Sheng Erda refrigeration (certified), central air conditioning is provided by Xuzhou 圣尔达 Refrigeration Electrical Services Limited. Xuzhou Sheng Erda Refrigeration Electrical Services Limited (xzktw.com) Xuzhou, Jiangsu, heat, refrigeration and air conditioning equipment leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customers needs. Sheng Erda leader in refrigeration staff warmly welcome all inquiries negotiations to create a better future Sheng Erda refrigeration.