What does low refrigerant charge in an air conditioning system typically result in?

Low refrigerant charge in an air conditioning system typically leads to both low suction pressure and low discharge pressure. When there is insufficient refrigerant, the evaporator does not receive enough refrigerant to absorb the necessary heat from the indoor air. This results in a reduced ability to produce cool air, as the evaporator coils are not fully flooded with refrigerant. Consequently, the pressure of the refrigerant in the suction line drops, resulting in low suction pressure.

Simultaneously, because the system isn't cycling refrigerant effectively, the compressor also cannot build up adequate pressure in the discharge line, leading to low discharge pressure as well. This drop in both pressures is indicative of an inadequate refrigerant charge, which compromises the overall efficiency and effectiveness of the air conditioning system.