What to do if your home central air conditioner breaks down
As the high temperature in summer continues, the frequency of use of household central air conditioners has increased significantly, but the subsequent failure problems have also plagued many families. This article will combine the hot topics and hot content on the Internet in the past 10 days to provide you with a detailed solution to help you quickly respond to central air conditioning failures.
1. Analysis of common faults and causes

| Fault phenomenon | Possible reasons | solution |
|---|---|---|
| Air conditioner not cooling | Insufficient refrigerant, clogged filter, compressor failure | Check the refrigerant pressure, clean the filter, and contact professional maintenance |
| Air conditioner is noisy | Fan bearing wear, loose screws, pipe vibration | Tighten screws, replace bearings, check pipe fixation |
| Air conditioner leaking | The drain pipe is clogged, the condensate pan is damaged, and the installation is tilted. | Unblock drain pipes, replace water pans, and adjust installation angles |
| Air conditioner starts and stops frequently | Voltage instability, thermostat failure, poor heat dissipation | Check the power supply, replace the thermostat, and clean the heat sink |
2. Self-checking steps
1.Check power supply: Make sure the air conditioner power plug is plugged in tightly, the circuit breaker has not tripped and the voltage is stable.
2.Clean filter: Take out the filter, rinse it with clean water, dry it and put it back again, which can solve 50% of the air supply problem.
3.Observe the outdoor unit: Check whether the outdoor fan is rotating and whether the heat sink is blocked by debris.
4.Reset system: Disconnect the power supply and then restart it after 5 minutes, which may solve the temporary system error.
3. Precautions for professional maintenance
| Services | average market price | Service content |
|---|---|---|
| Door-to-door testing fee | 50-100 yuan | Trouble diagnosis and quotation |
| Fluoride service | 200-400 yuan | Replenish refrigerant and detect leaks |
| Compressor repair | 800-1500 yuan | Repair or replace compressor |
| Circuit repair | 300-600 yuan | Check circuits and replace components |
4. Preventive maintenance suggestions
1.Regular maintenance: Professional maintenance once a year before use can extend the life of the air conditioner by 30%.
2.Correct use: Set the temperature not lower than 26℃ to avoid frequent power on and off.
3.Cleaning and disinfection: Clean the internal unit once a quarter to prevent bacterial growth.
4.winter protection: Put on the dust cover when not in use in winter to prevent dust from entering.
5. Comparison of brand after-sales services
| brand | Warranty period | Service hotline | response time |
|---|---|---|---|
| Gree | 6 years | 400-836-5315 | Within 24 hours |
| Beautiful | 6 years | 400-889-9315 | Within 48 hours |
| Daikin | 3 years | 400-820-1081 | Within 24 hours |
| Haier | 10 years | 400-699-9999 | Within 48 hours |
6. Emergency handling
When the air conditioner emits smoke, a burning smell, or leaks electricity, you should immediately:
1. Turn off the main power switch
2. Open doors and windows for ventilation
3. Contact 119 or professional maintenance
4. Do not use water to put out fires yourself
Through the above systematic solutions, we hope to help you effectively deal with various malfunctions of home central air conditioners. Remember, regular maintenance and proper use are the best ways to avoid air conditioner failure.
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