Answer: (1) The power supply voltage is too low and the compressor is overloaded.
(2) The air volume is too large.
(3) The overcurrent relay or thermal element is improperly set.
(4) The condenser is blocked and the condensing temperature is high.
(5) The load is too small or the idling time is too long, which will cause the refrigerant low pressure to be too low and cause low pressure tripping.
(6) The ambient temperature is too high.
(7) Lack of refrigerant.
