Why is the BYD Qin air conditioning not cooling?

[HazelLee]

Here are the reasons why the BYD Qin air conditioning is not cooling: Refrigerant leakage in the air conditioning system: Refrigerant leakage leads to insufficient refrigerant, causing the air conditioning to not cool. The solution is to add refrigerant along with fluorescent dye. After the vehicle has been used for a period, inspect the air conditioning system with a specialized UV lamp. If there are any leaks, they will glow under the light. The leaking parts or components should then be repaired or replaced. Low engine speed: When the car is idling, the engine speed is low, which causes the compressor speed to also decrease. Combined with insufficient refrigerant, the instantaneous pressure boost cannot reach the standard state, resulting in low high pressure and the air conditioning not cooling. Observe through the sight glass on the top of the dryer. During normal operation of the air conditioning, if continuous bubbles appear in the sight glass, it indicates insufficient refrigerant. If the bubbles appear to be flipping, it means the refrigerant is severely insufficient and needs to be added. Damaged expansion valve: A damaged expansion valve prevents the formation of high pressure in the system before the valve. The high-pressure refrigerant cannot reach the required 150 Kpa pressure, causing the evaporator behind the expansion valve to fail to cool down, resulting in the air conditioning not being cold. Internal wear of the air conditioning compressor: Severe internal wear of the air conditioning compressor causes the pressure between the compressor and the expansion valve to fail to reach 150 Kpa to 200 Kpa, preventing the refrigerant in the system from circulating normally and leading to the air conditioning not being cold. If severe internal wear of the air conditioning compressor is found, replacing the compressor will resolve the issue.

[LeilaDella]

Last time I drove a BYD Qin, the air conditioning cooling effect was poor, making the car uncomfortably hot. I first tried lowering the temperature and increasing the fan speed for testing. When there was no change, I suspected a refrigerant leak, as leaking Freon can cause the cold air to dissipate. The compressor's operation is also crucial - I listened for a humming sound when turning it on; no sound might indicate a burnt-out compressor motor. Clogged air intake due to dirty filters is a common issue, so I tried pulling them out to clean them. I was also concerned about electrical faults, such as incorrect signals from the temperature sensor, so I went to the 4S shop to scan with an OBD scanner for accurate diagnosis. Regular maintenance should include cleaning dust from the pipelines to prevent minor issues from becoming major repairs. Driving without AC in hot weather is unbearable, so prioritizing safety means addressing problems early.

[Susan]

My BYD Qin hasn't been purchased for long, but the air conditioner not cooling has been bothering me for quite some time. I tried adjusting the temperature control from 18 to the LO setting to see if it was a setup issue, sometimes the eco mode limits cooling. Need to check if the condenser fan is spinning, just pop the hood and take a quick look. If there's not enough refrigerant, adding a can of coolant might help, but don't overdo it. Changing a dirty filter is super cost-effective, buy one online and replace it yourself in just minutes. BYD's system is highly intelligent, sudden cooling failure could be a sensor false alarm, going directly to a specialized repair shop to diagnose the code saves time. Regular checks help avoid overlooking minor issues, preventing awkward situations during trips.

[DeEverett]

Common causes of air conditioning not cooling: refrigerant leakage, compressor damage, clogged filter, circuit short, or temperature control switch failure. First, test it yourself: set the temperature to the lowest and the fan speed to the maximum to see if there is cold air coming out. Open the hood to check if the fan is working and if the compressor is making normal sounds. A clogged filter is easy to fix—just remove, clean, or replace it. Refrigerant leakage requires professional refilling. BYD models have complex designs, so it's best to visit an authorized service center for tool-assisted diagnostics and repairs. Address the issue promptly to prevent high-temperature damage and ensure driving comfort.

[MaximusDella]

During a drive, the air conditioning in my BYD Qin suddenly failed, and the cold air stopped abruptly. I immediately pulled over, opened the windows to cool down and prevent heatstroke. To troubleshoot: check the temperature settings, inspect the cleanliness of the filter. Refrigerant leaks are common, causing the compressor to run idle. Or the fan may not be spinning, leading to poor heat dissipation, which can easily cause overheating in hot weather. Abnormalities in the battery system could also affect the air conditioning power supply. It is recommended to schedule a comprehensive inspection at a BYD service center to check wires and fuses, as electrical faults can escalate easily. Regular maintenance and cleaning of air conditioning components can extend their lifespan and ensure safe driving.

[VanJeremiah]

We often use the BYD Qin to pick up family members, and everyone complains when the air conditioning doesn't cool. I checked the temperature control settings and switched from automatic to manual to test. Dirty filters are the main culprit; it only takes ten minutes to remove and clean them yourself. If that doesn't work, it might be due to insufficient refrigerant—check the pressure before refilling. Compressor issues require professional diagnosis; don’t tamper with the electrical circuits. Money-saving tip: Look for DIY videos online to handle minor issues yourself, but head straight to the 4S shop if it doesn’t work. Safety first—driving in heat without AC can lead to fatigue, so get it fixed promptly.