E30
Toshiba
Refrigerant Pressure Sensor Error
Unit shows E30; may be associated with abnormal refrigerant pressure readings on inverter models.
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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
Failed pressure transducer, Loose pressure sensor connector, Damaged sensor wiring, Faulty outdoor PCB analog input
How to Fix / Troubleshooting
Safety first: Power off the unit and do not loosen any refrigerant connections. Only licensed technicians may open the refrigerant circuit.
- Step 1 – Locate pressure sensor: On inverter models, find the pressure transducer mounted on a service line near the outdoor coil.
- Step 2 – Inspect connector: Ensure the multi-pin connector is fully seated and free of corrosion.
- Step 3 – Check wiring: Look for damage to the sensor harness.
- Step 4 – Replace sensor (technician): If wiring is intact and E30 persists, a technician should replace the pressure sensor and verify system pressures and charge.
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Repair Difficulty
Professional Required
5/5
Required Part
Refrigerant Pressure Sensor
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