Official Kenmore dehumidifier parts

Most common Kenmore 50 pint dehumidifier parts that need replacing

1. Air filter. The air filter is behind the grill in the Kenmore KM50 dehumidifier case. The air filter traps dust and debris in the air that would contaminate the evaporator fins and condenser coils.
2. Electronic control board. The dehumidifier electronic control board controls the major electro-mechanical components in the dehumidifier. The electronic control board monitors input from the humidistat and activates the compressor to dehumidify the space when humidity exceeds the level the user sets. Input from the thermistor (temperature sensor) on the evaporator is also used to detect frost on the evaporator. The electronic control board shuts off the compressor when excessive frost builds up on the evaporator. With the compressor shut off, the frost melts and the condensate water drips into the collection bucket. Once the fins are clear of frost, the electronic control board restarts the compressor if the space needs dehumidification.
3. Humidistat. The dehumidifier humidistat is a sensor that detects the water vapor or percent of humidity in the room. The humidistat provides input to the dehumidifier’s electronic control board through a wire harness connection.
4. Thermistor. The thermistor is a temperature sensor that’s connected to the dehumidifier’s electronic control board through a wire harness.

How to replace the evaporator thermistor in your Kenmore dehumidifier

1. Unplug the dehumidifier power cord from the wall outlet to disconnect electrical power.
2. Pull the water collection bucket out of the front of the dehumidifier case. Pull the air filter out of the front grille. Remove the 2 screws at the bottom of the front grille that secure it to the frame. Lift the front grille carefully up and off of the front of the frame and set the front grille down in front of the dehumidifier.
3. Disconnect the thermistor wire harness from the electronic control board. Pull the evaporator thermistor out of the copper sleeve on the side of the evaporator coil.
4. Install the new thermistor on the evaporator and connect its wire harness to the electronic control board.
5. Reassemble the dehumidifier and plug in the power cord to restore electrical power.