Frigidaire Dehumidifier: compressor running continuously

Professional Repair Guide

What is this symptom?

Is your Frigidaire dehumidifier's compressor running continuously? This issue often arises when the humidity level remains above the setpoint or if the unit is undersized for your space. A faulty humidity sensor may also be to blame. If your dehumidifier struggles to reduce humidity effectively, it's important to investigate these potential causes.

Urgency: Medium

Possible Causes

Environment humidity remains above setpoint or unit undersized for space

How to Identify: High relative humidity (>60% and unit never reaches set target; use hygrometer to validate ambient humidity.

Part: Control/Humidistat & environmental load

Faulty humidity sensor or humidistat

How to Identify: Dehumidifier runs constantly despite low humidity readings; external hygrometer shows lower humidity than unit’s reading; sensor may be dirty or misreading.

Part: Humidity sensor/Humidistat

Low refrigerant or refrigerant leak

How to Identify: No frost on coils, constant compressor running but no water collected; cooling performance poor.

Part: Refrigerant system

Next step

Choose the next step for compressor running continuously

Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.

Check during diagnosis

Most relevant component to inspect

Humidity Sensor

Measures relative humidity so the appliance can regulate drying or moisture removal.

Typical part-only price
$20 - $100
DIY difficulty
Medium
Estimated time
20-60 mins
Where can I find the model number?

Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.

Find a part that fits my model

Verify the complete model and part number on the retailer's compatibility page before ordering.

Other parts options

Check related components first; use model search as a fallback.

Model number required

Model-compatible Dehumidifier parts

Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.

Find a part that fits my model

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Preventive Maintenance

  • Clean or replace air filter: Restricted airflow and excessive run times
    Frequency: monthly
  • Check humidity sensor area for dust: Incorrect humidity readings leading to constant operation
    Frequency: quarterly

Frequently Asked Questions

Why is my Frigidaire Dehumidifier compressor running continuously?
Common causes include high ambient humidity, an undersized unit, or a faulty humidity sensor.
How do I fix Frigidaire Dehumidifier compressor running continuously myself?
Currently, there are no DIY solutions recommended for this issue.
How much does it cost to fix compressor running continuously?
Professional repair costs can vary, but specific costs are not listed.
When should I call a technician for compressor running continuously?
If the issue persists and humidity levels do not improve, it's advisable to seek professional help.

References & Sources

Community Analytical Insights

Guidance from available sources; statistical claims are shown only for samples of at least 10 discussions

Common Issues Reported by Users

  • Faulty humidity sensor causing incorrect readings
  • Clogged air filter restricting airflow
  • Defective thermostat not regulating temperature properly

User Suggested Solutions

  1. Check and clean or replace the air filter. Ensure that the dehumidifier is unplugged before performing this task. Remove the filter, wash it with warm water, and let it dry completely before reinstalling. If the filter is damaged, replace it with a new one.

  2. Inspect the humidity sensor for any dirt or obstructions. If it appears dirty, gently clean it with a soft cloth. If the sensor is faulty, consider replacing it. Refer to the user manual for specific instructions on accessing the sensor.

  3. Test the thermostat by adjusting the settings to see if the compressor cycles off. If it remains on, the thermostat may need to be replaced. Consult the user manual for guidance on replacing the thermostat.

Limited-source guidance; percentages and success-rate claims are not shown
View Sources

Data compiled from real discussions on r/appliancerepair and r/Appliances:

  1. Frigidaire (Electrolux) Dehumidifier FAD704DWD13, compressor...

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