High pressure cutout switch: Most AC compressors have a high pressure cutout switch that is designed to protect the compressor from damage if the pressure in the refrigerant lines gets too high. In very hot weather, the pressure in the refrigerant lines can increase, causing the high pressure cutout switch to trip and shut off the compressor.
Low pressure cutout switch: AC compressors also have a low pressure cutout switch that is designed to protect the compressor from damage if the pressure in the refrigerant lines gets too low. In very hot weather, the pressure in the refrigerant lines can decrease, causing the low pressure cutout switch to trip and shut off the compressor.
Refrigerant leak: A refrigerant leak can also cause the AC compressor to shut down. When there is a refrigerant leak, the pressure in the refrigerant lines can drop, causing the low pressure cutout switch to trip and shut off the compressor.
Faulty compressor: In some cases, a faulty compressor can also cause the AC compressor to shut down in very hot weather. If the compressor is not able to circulate the refrigerant properly, the pressure in the refrigerant lines can increase, causing the high pressure cutout switch to trip and shut off the compressor.
If your AC compressor is shutting down in very hot weather, it is important to have it checked by a qualified technician to determine the cause of the problem.
