Why does the air conditioning in a new energy vehicle suddenly stop cooling?

1 Answers
VonEzra
07/30/25 7:38am
The air conditioning in a new energy vehicle may stop cooling due to insufficient or low refrigerant levels, or minor refrigerant leaks. Additionally, excessive refrigerant can also cause the air conditioning to stop cooling. Solutions for insufficient or low refrigerant: You can observe from the sight glass on top of the dryer tank. When the air conditioning is operating normally, if continuous and slow bubbles appear in the sight glass, it indicates insufficient refrigerant. If obvious bubble flipping occurs, it means the refrigerant is severely insufficient. If the refrigerant is insufficient or too low, the solution is to add refrigerant. However, note that if adding from the low-pressure side, the refrigerant bottle must not be inverted; if adding from the high-pressure side, the engine must not be started. Solutions for excessive refrigerant: Observe from the sight glass on top of the dryer tank. If no bubbles are visible in the sight glass when the vehicle's air conditioning is running, and no bubbles appear after the compressor stops, it definitely indicates excessive refrigerant. If the pressurized cooling oil volume is too high, during normal operation of the air conditioning system, somewhat turbid bubbles can be seen in the sight glass. Of course, if the refrigerant is indeed excessive, you can slowly release some from the maintenance port on the low-pressure side of the air conditioning system.
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