E7
Hitachi
Clock / Timer Circuit Failure
Hitachi oven shows E7 and the clock/timer cannot be set
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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 clock IC on control board, Damaged touch keys for timer, Corrupted firmware
How to Fix / Troubleshooting
Safety first: Disconnect power before removing the control panel.
- Power reset: Turn off power for 5–10 minutes, then restore and attempt to set the clock again.
- Check touch response: Verify that other keys respond normally. If only timer keys fail, the keypad area may be damaged.
- Inspect control PCB: Look for burnt or cracked components near the clock/timer section.
- Replace control PCB or touch panel: Depending on design, the clock may be integrated into the main PCB or the touch interface. Replace the faulty module with the correct Hitachi part.
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Repair Difficulty
Medium
3/5
Required Part
Main Control PCB
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