Mr. Coffee Open Heater Circuit with Live Control Board

Display and clock work, but heating element does not heat and no brewing occurs.

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

Blown thermal fuse on heater, Open heating element, Loose heater wiring connector, Failed heater relay on control PCB

Safety first: Unplug the unit before any inspection. Heater circuit work involves dangerous voltages.

Rule out simple issues:
- Ensure reservoir has water and lid/carafe are properly positioned.
Listen for activity:
- When starting a brew, listen for pump or boiling sounds; silence suggests heater circuit failure.

Diagnosing requires opening the base and testing continuity of the heater and thermal fuse. This should be performed by a technician.

Professional Required 5/5

Thermal Fuse on Heater

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