If the refrigeration system shows that:A .Suction and discharge pressure of the compressor is low.B .Large vapor bubbles in the liquid sight glass.C .Low gauge readings in the condenser.D .Ammeter reading for the compressor motor is lower than normal.Then the cause may be .
A、 undercharging of refrigerant
B、 overcharging of refrigerant
C、 lower heat load
D、 air in the system
发布时间：2025-07-20 22:39:38
