Mitsubishi air conditioning national after-sales only designated service hotline (7x24 hours): 400-8121880.
Haier has been in Beijing, Shanghai, Jinan, Urumqi, Xi'an, Zhengzhou, Lanzhou, Yinchuan, Nanjing, Chengdu, Xining, Chongqing, Wuhan, Hangzhou, Hefei, and other major cities to set up a national service network and for the country's users to launch a 24-hour service that can be dialed at 400-812-1880.
Haier air conditioning should be regularly cleaned, the benefits are:
1, increase the safety of air conditioning operation, through the door to clean and air conditioning operation of a professional comprehensive testing and debugging, can be timely and effective in the discovery and elimination of wall-hung boilers in the operation of the problem to ensure that the wall-hung boilers can be safe operation.
2, can extend the service life of the air conditioning. Through the internal cleaning and descaling can effectively reduce the water pump, heat exchanger and other major components of the load, so that the air conditioning run more smoothly, extending its service life. If every one to two years on the air conditioning cleaning maintenance, can extend the service life of the equipment 3-5 years.
Haier China official website - how to report repair
Baidu Encyclopedia - Haier
There is also an official website for online consultation as well as an official WeChat public number to provide customers with information and services such as consulting, products, appointments and activities. I hope the Baidu answer can help you