H01
Zojirushi
High Temperature Lockout (Unit Too Hot to Restart)
Display shows H01 and the unit will not start a new cooking cycle.
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Possible Causes
Attempting to restart immediately after cooking, Internal components above safe temperature, Blocked ventilation, Faulty temperature sensing causing false high reading
How to Fix / Troubleshooting
Safety first: Do not attempt to cool the unit rapidly with water or fans; allow natural cooling.
- Allow cooling time: Open the lid and remove the inner pan. Leave the unit unplugged for 30–60 minutes to cool.
- Improve airflow: Ensure the cooker is not enclosed in a cabinet and has space around it.
- Avoid back-to-back cycles: For heavy use, allow a short cool-down period between high-heat or pressure cycles.
- Test again: After cooling, plug in and start a short cycle. If H01 appears even when the unit is cool to the touch, a sensor or board fault is likely.
When to call a technician: False high-temperature lockouts require testing of thermistors and control logic.
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Repair Difficulty
Easy
2/5
Required Part
Bottom Thermistor, Main Control PCB
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