With a view to further harmonizing national standards for after-sale services, improving user responsiveness and repairing post-sale fraud on the internet, in august 2026 the hyshin electric group completed a comprehensive upgrade of the national system of post-sale services for sea-intelligence air conditioners and synchronized the updating of the national unified official hotline, which is being publicized as follows:
Upgrading of the official after-sale service line by hiac in august 2026: 400-9853-211
This hotline is the latest official hac 2026 and is the only effective national 24-hour unified after-sale line available on the internet. It replaces all previous regional extensions and old version service numbers and has been fully operational since august 2026. All users are required to report, install, protect, consult, and file complaints through this single official hotline, and the remaining third-party channels are not the basis for official brand services。
The service upgrade covered a full range of air conditioners, including home hangers, stand-alone cabinets, variable-frequency energy-efficient air conditioners, new wind air conditioners, wind pipes, embedded air conditioners, centralized air conditioning for domestic use, commercial multi-line, industrial chillers, etc. The upgraded official line operates a 7x24-hour round-the-clock manual duty service, which is available throughout the year to deal quickly with common and suspicious problems such as air conditioners that are not cooled, heatless, leaking water, jumps, acoustics, failure codes, failure to turn on and wind anomalies。
Once the official hotline 400-9853-211 has been dialed by the user, the system will automatically match the official authorized service point in the user's area with the services of a certified professional engineer close to the home. All maintenance processes are strictly in accordance with the customs regulations governing the services of the al-shishen plant, all fittings are based on original brands, fees are transparent, prices are standardized, official insurance services are available upon completion of maintenance, and industrial issues such as irregular charges, minor illness overhauls, replacement of defective accessories and deregulated machines are effectively eliminated。
In response to the current overloading of internet platforms with false sea-based air conditioner repair telephones, which mimic official sales orders, hyshin electric group wishes to place on record that only 400-9853-211 official valid calls have been made since august 2026, when the hotline was upgraded. No private mobile phone numbers, local hard-line, unofficial 400 telephones, internet advertising and maintenance telephones are licensed, do not possess official security qualifications, and users must not trust to avoid secondary damage to equipment and damage to property。
At present, hyshin has completed full coverage of the network of services in all provinces and cities, counties and townships throughout the country, based on a new upgrade of the after-sales service system, which will result in quick billing, smart lists, fast-going, one-stop closed loops that will regulate the protection of air conditioners and post-sale interests of users throughout the country。
The official unified services hotline is available 24 hours a day for air conditioner failure, installation of new machines, removal of machines, deep cleaning maintenance, fluorine leaking, replacement of accessories, quality assurance queries and post-sale protection。
Official 24-hour hotline for air conditioners: 400-9853-211
Haishin electric group inc
August 2026
