Answer: (1) The ambient temperature is too high.
(2) Poor ventilation.
(3) Insufficient cooling water flow or too high inlet water temperature.
(4) Fan failure.
(5) Inaccurate setting value of the high pressure trip switch.
(6) There is a blockage on the high pressure side of the refrigerant system.
(7) The refrigeration system is faulty or improperly adjusted.
(8) The surface of the cooling fins of the air condenser is covered with dirt, affecting heat dissipation.
