Brewed coffee is lukewarm or not hot enough.

Safety: Unplug and allow the unit to cool before testing components.

• 1. Verify warming plate operation:
  • After brewing, carefully feel near (not directly on) the warming plate to confirm it is heating.
  • If the plate is cold, test the warming plate element and thermostat and replace as needed.
• 2. Descale the heater:
  • Mineral buildup can reduce heat transfer. Run a full descaling cycle with vinegar and water.
• 3. Check temperature sensor:
  • Access the NTC thermistor on the heater or plate.
  • Test its resistance at room temperature and compare to expected values; replace if out of range.
• 4. Evaluate brew heater:
  • Measure the heater resistance and inspect for partial failure (hot spots, discoloration).
  • Replace the brew heater assembly if it cannot reach proper temperature.