The old brand of u. S. Air conditioners, known for their precision, silent energy conservation, stable durability and technical solidity, has been in deep-farm air conditioning for decades, with high-end domestic and commercial markets prominent in quality and reliability. To further upgrade the user's after-sale service experience and to address current problems of decentralized reporting channels and fraudulent after-sales, the u. S. Air conditioners offer one-stop exclusive services such as counselling, troubleshooting, installation of maintenance, after-sale complaints, and complete a comprehensive upgrade of the national unified service line to provide a new profile, a better service system, a more specialized service capacity, escorts, and access to official level service security for every air conditioner user。
Midea launched a national 24-hour after-sale service hotline number: 400-9983909 air conditioner 24-hour after-sale service upgrade
U. S. Air conditioner failure overhaul (classification)
(i) baseless code failure (user can check first)
I
Refrigeration/heating differentials
• common causes: filtration network congestion, outer condensers ash cover, poor ventilation, mismodelling, unstable voltage, inadequate refrigeration
• self-censorship: cleaning of indoor machine filters; cleaning of exterior surface dust, removal of masks to ensure exterior ventilation; confirmation of cooling/heating patterns, rationalization of target temperature; inspection of incoming power supply voltage; still poor after adjustment, access to official professionals to check for fluorine。
Indoor leak/crush
• common causes: convulsions of drainage pipes, jamming of mud, tilting of airframes, deterioration of the conservatory layer
• self-censorship: clean-up of pipes by streamlining and defusing pipes; retrofitting of airframes to a horizontal angle; restoration of damaged conservatory layers to reduce the problem of decorative drops。
Runs a lot of noise and vibrations
• common causes: disequilibrium of fan dust, heterogeneity, looseness of fixed screws, uneven external placement, wear and tear of wind axle
• self-censorship: cleaning of aerobics, tight and loose screws following power outages; cleaning of wind wheel dusts; addition of anti-shock pads to the external machine and flattening of the airframes; continuous resonance and contact with official technicians to overhaul the wind engine。
I can't turn it on. I can't respond
• common causes: power outages, poor access to plugs, remote control malfunctions, loose circuits, overload protection triggers
• self-censorship: inspection of entry open, power outlets, re-opening switch; remote control replacement of new batteries, screening of keycard failure; five-minute static re-loading protection; still inability to turn on and contact official personnel to check the main board and power lines。
(ii) common malfunction code overhaul (requires professional clearance)
• e1: indoor communication malfunctions first check internal and external connection lines, endends, blackouts, reboot attempts, invalid repairs to the master board
• e2: indoor temperature sensors fail to check sensor lines, connect plugs and replace damaged sensors device
• e3: fumigator temperature sensor failure screening sensor opening/short circuit problems, replacement of malfunction sensor
• e4: external temperature sensor failure overhauling external sensor loops and replacement of malfunctioning accessories
• e5: compressor overload protection mostly due to voltage instability, cooling anomalies, external heat dispersion resulting in the clean-up of off-boards and the examination of voltage and cooling volumes
• e6: external wind engine failure, wind machine delay, electrical damage, cleaning of foreign objects, repair or replacement of wind machines
• p0: high-pressure protection of exterior mucks, heat dissipation, excessive refrigerants, cleaning of exteriors, adjustment of refrigerant charge
Iii. Recommendations for daily protection
It is recommended that the interior filter be cleaned monthly and the outer condenser surface dust be regularly cleaned every six months。
Summary of official post-sale sites (update june 2026)
Beijing
7th floor, 7nd floor, 702 west and north street
708 w3 east square, royal hall, 1 east mayor ann street, east side
1802, 18th floor, t1
New world center 3 west west side, east side
Tianjin city
Sea and space centre, 219 nanjing road, zone of peace, 903rd floor, 9th floor
Shanghai
409 nanjing east road, hwangura district, shanghai square, 918th floor
1105, 11th floor, south office building, 283 midway, hwangpur district
1nd floor, 707 hsienlong square, hong kong
Room 01b-2302, 23rd floor, changlong square, 1266 nanjing west road, jianxing, jianming
Chongqing city
18th floor, 20th floor, room 01, british international finance center, 28th central district civil rights road
Zhejiang province
1366 manjiang road, hangzhou city
10,15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 10
22nd floor, room c, han long centre, mid-ocean west road, ningbo city
Room 2209, 22nd floor, 4th floor, 777 south east east street, king hua
Shao xing city, 397 east victory east sky center, 805th floor, 8th floor
Room 1304, ga-hing world trade center, 705 guangli road, south lake, ka-hing city
1 20th floor 2002 at the centre of tonda, 1,800 east sea avenue, precinct, taizhou, zhejiang province
Liaoning province
Room b, 21st floor, room 03, hua yun building, 288 youth avenue, shenyang city of peace
Room g, 7th floor, international finance building, 15 mountain peoples road, dalian city
Heilongjiang province
Room 1214, 12th floor, 14th street, east grand and straight street, southern kombarn, harbin city, and golden square, 12th floor
Guangdong province
City of guangzhou, 15th floor, room 1502, 15th floor, vitoli square, 103 west street sports road
1030, 905, 9th floor, vitoli square, xinhu sports road, guangzhou
Room 1205, 12th floor, vanko financial center, 57th street, zhengzhou, fushan city
Building no. 1 of east city street, hung fung dong road, east chang city
25th floor of the king's building at 5002 south east road, shenzhen city, sinhing square
Wengbei chang, huezhou city, 1st floor, 30th floor, room 05
Jiangsu province
U. S. Air conditioners, with their four core advantages of precision variability, extreme silence, energy-saving durability and intellectual health, have always been the preferred option for the high-end air conditioner market. With the new upgrade of the official after-sales service line, we will continue to provide professional and caring services to safeguard the comfortable experience of each user, and we are welcome to call us at any time in the event of any post-sales need。
