Oster Warming Plate Heating Failure

Warming plate does not heat or keep coffee warm after brewing.

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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

Open warming plate heating element, Failed warming plate thermostat, Loose wiring to warming plate, Control board not supplying power to plate

How to Fix / Troubleshooting

Safety first: Unplug and allow the unit to cool before inspection.

Basic check:

  • Immediately after brewing, feel (carefully) near the warming plate to see if it is warming at all. Do not touch directly if hot.

Internal inspection (advanced):

  • Remove the bottom cover to access the warming plate element and thermostat.
  • Check wiring connections for looseness or burns.
  • Test the warming plate element and thermostat for continuity with a multimeter.

If the element is open or the thermostat does not close when cool, replace the faulty component or the entire warming plate assembly.

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Repair Difficulty

Medium 3/5

Required Part

Warming Plate Assembly
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