Carrier · Energy Recovery Ventilators
Circuit B is experiencing low refrigerant pressure. This can be caused by issues with refrigerant charge, airflow, or components.
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Clean or replace filters.
Ensure the evaporator fan is rotating correctly and the belt is properly tensioned.
Inspect the filter drier for any blockages.
Check the relevant transducer for correct operation.
Verify the economizer is functioning properly in varying ambient temperatures.
Contact a qualified technician for refrigerant handling.