E2
Hitachi
Overheat Protection / Thermal Cutout Tripped
Hitachi oven displays E2 and stops heating mid-cycle
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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
Open thermal fuse on oven body, Failed high-limit thermostat, Blocked cooling airflow, Faulty cooling fan motor
How to Fix / Troubleshooting
Safety first: Turn off power and allow the oven to cool fully before inspection.
- Check ventilation: Ensure cabinet cut-outs and vents meet Hitachi installation clearances. Remove any obstructions.
- Inspect cooling fan: With the oven running (if possible), verify that the top or rear cooling fan operates. If not, the fan motor or its supply may be faulty.
- Test thermal fuse: Access the rear or top of the oven to locate the thermal fuse or high-limit thermostat mounted on the oven body. With power off, test for continuity. An open fuse indicates it has blown.
- Replace blown fuse: Replace the thermal fuse with the exact temperature rating specified by Hitachi. Investigate and correct the cause of overheating (fan, vents) before restoring power.
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Repair Difficulty
Hard
4/5
Required Part
Thermal Fuse / High-Limit Thermostat
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