Toshiba Partial Evaporator Frost Pattern

Frost forming only on the top or only on one side of the evaporator coil.

Safety Warning

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 undercharge, Capillary tube restriction, Evaporator internal blockage, Weak compressor

How to Fix / Troubleshooting

Safety: Do not attempt to open the sealed system. Refrigerant handling requires certification.

Steps (diagnostic):

1. Confirm airflow: Ensure the evaporator fan is running and the air ducts are not blocked.
2. Observe frost: After 20–30 minutes of operation, inspect the evaporator. Frost only near the inlet or in a small area suggests a sealed system issue.
3. Professional service: Contact a Toshiba-authorized refrigeration technician to check for leaks, restrictions, and compressor performance.

Repair Difficulty

Professional Required 5/5