Unit displays F03; may be associated with low-pressure protection on outdoor unit.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Refrigerant leak, Blocked indoor coil airflow, Blocked expansion device, Faulty low-pressure switch

Safety first: Turn off power. Do not attempt to add refrigerant without proper certification.

Step 1 – Check indoor airflow: Clean filters and indoor coil to ensure proper airflow.
Step 2 – Inspect for oil stains: Look for oily spots on refrigerant piping and joints indicating leaks.
Step 3 – Technician diagnosis: A licensed technician should connect gauges, locate leaks, repair them, evacuate, and recharge the system to Toshiba specifications.

Professional Required 5/5

Low-Pressure Switch / Refrigerant Circuit

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