Why is there no response when pressing the car AC button?

1 Answers
NaomiRose
07/30/25 10:03am
If there is no response when pressing the car AC button, it may be due to compressor damage or compressor clutch failure. Below is a detailed explanation of the possible causes: Car compressor damage: Damage to the car air conditioning compressor can result in the AC not working or poor cooling performance. Obvious symptoms include the compressor not rotating, unusual noises during rotation, abnormal pressure readings, high low pressure, low high pressure, or no changes in both high and low pressure. Car compressor clutch failure: Abnormal noises from the electromagnetic clutch may occur due to belt slippage, clutch slippage, improper installation of the electromagnetic coil retaining ring, leading to clutch damage. Alternatively, the electromagnetic clutch may fail to engage, possibly due to excessive air gap, poor circuit contact, or short/open circuits in the electromagnetic coil.
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