A faulty condenser fan motor typically results in what symptom within an air conditioning system?

A faulty condenser fan motor often leads to reduced airflow over the condenser coils. This diminished airflow prevents the refrigerant within the condenser from adequately dissipating heat, which consequently affects the pressures in the system. When the condenser cannot cool the refrigerant effectively, the pressures are unable to reach their normal operating levels.

In this scenario, low suction pressure occurs because the refrigerant does not effectively condense in the evaporator, leading to less refrigerant being drawn into the compressor. This results in insufficient refrigeration effect, which translates to lower pressures on the suction side. Meanwhile, low discharge pressure also arises because the pressure in the condenser, which would normally be higher due to heat being released, remains too low as the heat exchange process is compromised.

Thus, the combination of these factors underscores why a malfunctioning condenser fan motor results in both low suction and low discharge pressures, accurately reflecting the implications of inadequate heat transfer in the system.