← Dehumidifier Problems

Freezing up

Most Likely Causes

Dehumidifier Fan Motor

Most common causeappliancepartspros

Manually rotate the fan blade to verify it spins smoothly. Confirm the blade does not contact the fan housing when revolving. If the blade turns freely, use a multimeter to check if the fan motor receives power. Should the motor obtain electricity but the dehumidifier fan remains inactive, the fan motor is potentially faulty. When the fan motor is nonfunctional, swap in a new one.

Repair Steps

  1. 1.Safety Precautions:
  2. 2.Locate the Fan Motor:
  3. 3.Gather Necessary Tools and Replacement Parts:
  4. 4.Access the Fan Motor:
  5. 5.Disconnect Wiring:
  6. 6.Remove the Old Motor:
  7. 7.Prepare the New Fan Motor:
  8. 8.Install the New Motor:
  9. 9.Attach Wiring or Connectors:
  10. 10.Reassemble the Cover or Panel:
  11. 11.Plug In and Test:
  12. 12.Final Check:

Dehumidifier Blower Wheel

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Manually rotate the blower wheel to check if it spins freely. If the wheel does not turn smoothly or contacts the fan housing while revolving, replace the blower wheel. Also, if the wheel wobbles during rotation, this signifies it is not secure on the motor shaft. In that case, tighten or substitute the loose blower wheel. Finally, if the blower wheel is physically harmed, swap it out for a new one.

Repair Steps

  1. 1.Safety Precautions:
  2. 2.Locate the Blower Wheel:
  3. 3.Gather Necessary Tools and Replacement Parts:
  4. 4.Access the Blower Wheel:
  5. 5.Disconnect the Old Blower Wheel:
  6. 6.Remove the Old Blower Wheel:
  7. 7.Prepare the New Blower Wheel:
  8. 8.Install the New Blower Wheel:
  9. 9.Reattach the Fan Motor:
  10. 10.Reassemble the Cover or Panel:
  11. 11.Plug In and Test:
  12. 12.Final Check:

Dehumidifier Fan Blade

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Manually rotate the fan blade to verify it spins smoothly. Confirm the blade does not contact the fan housing while revolving. If the fan blade does not turn freely or rubs against the housing, this signifies a defective blade needing replacement. Also, wiggle the fan motor shaft to check if it moves at all. Any slight shaft movement denotes the fan blade is not secure. In that case, tighten the set screw. If this does not resolve the issue, replace the loose fan blade for a new one.

Repair Steps

  1. 1.Safety First:
  2. 2.Access the Fan Compartment:
  3. 3.Identify the Fan Blade:
  4. 4.Detach the Old Fan Blade:
  5. 5.Clean the Area and Prepare for Installation:
  6. 6.Install the New Fan Blade:
  7. 7.Reassemble the Fan Compartment:
  8. 8.Plug in the Dehumidifier and Test:
  9. 9.Monitor the Dehumidifier's Performance:
  10. 10.Final Check and Clean-Up:

Dehumidifier Air Filter

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When the air filter accumulates excessive dirt, it obstructs airflow across the evaporator coils. Restricted airflow causes the evaporator coils to become excessively cold. As humid air flows over the cold evaporator coils, it condenses and freezes on the coils. Over time, frost entirely covers the evaporator coil assembly. If observing a dirty air filter, clean or replace it to restore proper airflow and prevent freezing of the evaporator coils.

Repair Steps

  1. 1.Safety Precautions:
  2. 2.Locate the Air Filter Compartment:
  3. 3.Access the Air Filter Compartment:
  4. 4.Remove the Old Air Filter:
  5. 5.Clean the Filter Compartment:
  6. 6.Install the New Air Filter:
  7. 7.Close the Air Filter Compartment:
  8. 8.Power On and Test the Dehumidifier:
  9. 9.Monitor the Air Quality:
  10. 10.Regular Maintenance and Replacement Schedule:

Air Flow Problem

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The majority of standard dehumidifier models need the room temperature to stay above 65 degrees Fahrenheit. When the room temperature falls below 65 degrees, frost accumulates on the dehumidifier coils. If the temperature in your home frequently drops under 65 degrees, you will need to acquire a dehumidifier model particularly designed for operation at lower temperatures to prevent freezing of the coils.