ERR 1
Cuisinart
Temperature Sensor Out of Range (Open Circuit)
Display shows “ERR 1” and brewing is disabled.
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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
Disconnected or broken thermistor lead, Failed thermistor on heater plate or boiler, Burned connector at control board, Internal wiring damage from overheating
How to Fix / Troubleshooting
Safety first: Unplug the coffee maker and allow it to cool completely. Internal testing involves live-voltage areas; if you are not experienced, do not proceed beyond visual checks.
- Visual inspection: Look for obvious signs of overheating or melting around the base and hot plate area. If you see damage, discontinue use.
- Reset attempt: After cooling, plug the unit back in and see if the error clears. If it reappears immediately, the sensor circuit is likely open.
- Advanced (for technicians): Access the internal wiring to the thermistor on the heater plate or boiler and test continuity with a multimeter. Replace the thermistor if open or out of spec.
- Consumer guidance: For most users, this error indicates a failed internal sensor. Do not bypass or short the sensor. Contact Cuisinart or a professional repair service for sensor or board replacement.
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Repair Difficulty
Professional Required
5/5
Required Part
Thermistor Assembly
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