Carrier · Energy Recovery Ventilators
This indicates low refrigerant pressure in Circuit A. Several factors can contribute to this condition.
Click steps to track your progress.
Check and clean or replace filters.
Verify the evaporator fan is rotating correctly and the belt is tensioned.
Inspect the filter drier for blockage.
Check the relevant transducer for proper operation.
Ensure the economizer is not stuck open in low ambient temperatures.
Consult a qualified technician for refrigerant service.