H05
Panasonic
Bottom Temperature Sensor Short / Overheat Detection
H05 error appears during preheat or cooking and the unit stops.
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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
Shorted NTC sensor, Melted sensor insulation, Moisture ingress into sensor connector, Shorted traces on main PCB sensor input
How to Fix / Troubleshooting
Safety first: Unplug the cooker and allow it to cool completely.
- Visual inspection: Remove the bottom cover and inspect the bottom NTC sensor and its wiring. Look for melted insulation, signs of moisture, or corrosion at the connector.
- Dry and clean: If there is moisture, dry the area thoroughly with a lint-free cloth and allow several hours of air drying before reassembly. Do not use the cooker if moisture is still present.
- Check for shorts: With a multimeter, check resistance across the sensor leads. A near-zero reading indicates a shorted sensor. Replace the bottom NTC sensor if shorted.
- PCB inspection: If the sensor tests normal, inspect the main PCB around the sensor input for carbon tracking or solder bridges. PCB-level repair should be done by a qualified technician; otherwise replace the main control PCB.
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Repair Difficulty
Hard
4/5
Required Part
Bottom NTC temperature sensor
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