How to Determine if the Drier Bottle is Faulty?
2 Answers
Methods to determine if the drier bottle is faulty are as follows: Check the sight glass on top of the drier bottle for any moisture condensation. If faulty, the air blown by the AC will not be very cool. Situations requiring drier bottle replacement are as follows: 1. Significant temperature difference: When the drier bottle is clogged, the temperature differs between the upper and lower parts. If there's a notable temperature difference when touching the connecting pipes at both ends of the receiver, replacement is necessary. 2. Contamination blockage: If there's contamination or ice blockage in the system, replacement is required. 3. AC shutdown due to malfunction: If the AC has been shut down due to malfunction or the system has been disassembled for an extended period, replacement is necessary. 4. Leakage in the receiver body: If there's leakage in the receiver body, replacement is mandatory. 5. Malfunctioning pressure control switch: If the pressure control switch of the receiver fails, replacement is required (the pressure switch can also be replaced separately).
To determine if the car's air conditioning dryer is faulty, I can share from my years of driving experience. Once on a hot day, I noticed the cooling effect weakened after turning on the AC—strong airflow but not cold, even emitting odd smells, and no noticeable cooling after driving for a while. This made me suspect the dryer was failing, as its main role is to absorb moisture and impurities from the refrigerant. The simplest way to check it is to start the AC and listen to the compressor's sound; abnormal noise or increased vibration may indicate a clogged or cracked dryer. Next, inspect the dryer itself—oil stains, cracks, or rust on the surface are clear signs of damage. Don’t forget to monitor the AC system pressure regularly; it should stay within a specific range—abnormally high or low pressure also points to dryer issues. For daily maintenance, I recommend replacing the dryer every two years to prevent moisture buildup from corroding system components and avoid bigger repair headaches. Remember, catching these small issues early keeps your AC running efficiently.
