Display shows “ERR1” and the coffee maker will not brew.
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.
Possible Causes
How to Fix / Troubleshooting
Safety first: Unplug the coffee maker and let it cool completely before opening the base or accessing internal parts.
Basic reset:
- Unplug for 10 minutes to clear any temporary error.
- Plug back in and attempt to start a brew. If ERR1 reappears immediately, proceed to inspection.
Inspect thermistor connection (for experienced DIYers):
- Remove the bottom cover (usually several Phillips screws).
- Locate the heater plate and attached temperature sensor (thermistor), typically a small bead or disc sensor clipped to the heater or plate.
- Check that the thermistor wires are intact and firmly connected to the main control board harness.
- Look for signs of heat damage or melted insulation.
If the thermistor is physically damaged or the wiring is burnt, the heater/thermistor assembly should be replaced as a unit. If wiring looks good but ERR1 persists, the control board may be faulty and professional service is recommended.
Repair Difficulty
Required Part
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