Toshiba
General Capacity Loss / System Inefficiency
Unit runs but room does not reach set temperature; performance is poor in both cooling and heating.
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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.
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Possible Causes
Dirty indoor and outdoor coils, Low refrigerant charge, Failing compressor, Incorrect Toshiba capacity selection for room
How to Fix / Troubleshooting
Safety first: Turn off power before cleaning coils. Refrigerant checks require a licensed technician.
- Step 1 – Clean indoor filters and coil: Remove dust and debris to restore airflow.
- Step 2 – Clean outdoor coil: Wash the outdoor coil fins gently with water to remove dirt.
- Step 3 – Check for airflow obstructions: Ensure both indoor and outdoor units have clear space around them.
- Step 4 – Technician evaluation: If performance remains poor, a technician should check refrigerant charge, compressor operation, and system sizing relative to room load.
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Repair Difficulty
Medium
3/5
Required Part
Indoor and Outdoor Coils / Compressor
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