Black+Decker Inaccurate Temperature Sensing / Calibration Drift

Display shows incorrect room temperature compared to an accurate thermometer; cooling performance seems mismatched to setpoint.

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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

Room thermistor out of calibration, Thermistor located in dead air spot or near heat source, Control board interpreting sensor incorrectly, Heat from electronics affecting sensor

How to Fix / Troubleshooting

Safety: Unplug the unit before moving or replacing sensors.

  • Compare readings: Place a reliable thermometer near the unit's air intake and compare to the displayed temperature.
  • Relocate sensor slightly: If the room thermistor is directly above the control board or near warm components, gently reposition it closer to the air intake path, away from heat sources.
  • Insulate from board heat: Ensure the sensor wires are not bundled tightly against warm PCB components.
  • Replace thermistor: If readings remain significantly off, replace the room temperature thermistor with a Black+Decker-compatible part.
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Repair Difficulty

Medium 3/5

Required Part

Room Temperature Thermistor
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