Reasons for Intermittent Air Conditioning Cooling
2 Answers
Reasons for intermittent air conditioning cooling: 1. In most cases, it is due to poor heat dissipation causing the air conditioning system to intermittently stop working. Clean and inspect the heat dissipation fins. 2. It could be a temperature sensor issue. There is a temperature sensor inside the air conditioning evaporator box. When the sensor detects that the evaporator box temperature is too low, it terminates the air conditioning compressor operation. Therefore, check if the temperature sensor is damaged. 3. Commonly known as ice blockage, which means there is water in your air conditioning system. When the air conditioning cools for a while, the water freezes and blocks the pipeline, causing the cooling to stop. After stopping for a while, the temperature rises, the ice melts, and cooling resumes, creating this cycle of intermittent cooling. In this case, replace the air conditioning dryer.
I have encountered this issue where the air conditioning sometimes blows cold and sometimes doesn't cool properly. It's usually due to insufficient refrigerant or a leak point. Unstable refrigerant flow can cause intermittent cooling performance. The compressor clutch may also be problematic - if the clutch engages and disengages irregularly, the AC will alternate between cooling and not cooling. Additionally, a faulty thermostat or sensor in the AC system can misjudge the cabin temperature, causing the system to cycle on and off frequently. Blockages in the condenser or evaporator can also restrict airflow and affect cooling efficiency. On the electrical side, aging relays or switch contacts can cause current instability. I recommend first checking the refrigerant pressure and pipe seals - if there are signs of leakage, repairs should be made promptly. If the compressor makes abnormal noises, there's likely a clutch issue, in which case a professional technician should use diagnostic equipment to test the entire system to avoid breakdowns while driving. Regular maintenance including cleaning the AC filter and checking fan belt tension can help prevent such problems.
