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What are the reasons for the compressor not starting?

2 Answers

ZoeLynn

07/29/25 7:09am

Compressor not starting may be due to air not being completely evacuated from the system during installation, leading to ice blockage; or the compressor power supply is not properly connected or there is no electricity. Below are detailed explanations regarding compressor failure to start: Compressor ice blockage phenomenon: If air is not completely evacuated from the system during installation, ice blockage may occur, increasing the compressor's workload. The increased load raises the compressor's temperature, causing the refrigeration oil to deteriorate over time under high temperatures, failing to provide lubrication and cooling. This further elevates the compressor's temperature, reducing the insulation of the coils due to high heat, ultimately damaging the compressor. Solution: Ensure strict quality control during installation. Compressor power supply not connected or no electricity: Poor contact in the power cord socket, or the power cord is too thin or aged, or the power voltage is too low. Starting voltage for fixed-frequency air conditioners: 187V, voltage fluctuation range: 198-242V; starting voltage for variable-frequency air conditioners: 156V, voltage fluctuation range: 176-264V. It is recommended to install a voltage stabilizer in households. Additionally, bending or flattening of connecting pipes during installation can increase the compressor's workload. Solution: Check if the power cord is aged.

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LeMary

08/12/25 10:29am

I've been driving for almost ten years. Last summer, during a long-distance drive, the air conditioning compressor suddenly stopped working, and the car became as hot as a steamer. After inspection, it was found that the fuse might have blown, commonly due to overload or aging; or the belt might have loosened, failing to drive the compressor. Electrical issues are also frequent, such as worn relay contacts preventing current flow, or sometimes poor contact in the switch button. Low refrigerant pressure due to leaks triggers the system's automatic protection to prevent startup, avoiding further damage to the compressor. Some sensor failures can also prevent signals from reaching the computer. If you encounter such a situation, don't push through—it affects driving safety—and get to a repair shop for a check-up. Remember to maintain the air conditioning system annually and check the belt tension regularly.

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