Whirlpool Dehumidifier: not operating properly

Professional Repair Guide

What is this symptom?

Is your Whirlpool dehumidifier not operating properly? Common issues include failure to turn on, premature shutdowns, or running without collecting water. This guide will help you identify and resolve these frustrating problems effectively.

Urgency: Medium

Important Tips for Whirlpool Models

Many Whirlpool dehumidifiers include a bucket float safety switch that when misaligned or faulty will shut the unit off.
Continuous drain models with pump have a pump indicator; a flashing pump light often signals drainage system issues.

Possible Causes

Faulty bucket float switch

How to Identify: Unit doesnâ€™t start or stops running even though the water bucket isnâ€™t full; multimeter shows no continuity on switch.

Part: Bucket float switch

Humidistat failure

How to Identify: The humidistat fails to close contacts when humidity is high; multimeter continuity test fails; unit doesnâ€™t start based on humidity setting.

Part: Humidistat

Dirty or clogged air filter causing restricted airflow

How to Identify: Airflow is noticeably reduced, unit appears to struggle, evaporator coils may frost over; cleaning filter improves operation.

Part: Air filter

Temperature too low causing automatic shutoff / frozen coils

How to Identify: Unit stops operating or runs ineffectively in cold environments, frost on coils; follows patterns of coldâ€‘weather shutdown.

Part: Evaporator coils/temperature sensor

Faulty humidity sensor

How to Identify: Humidity sensor contacts fail; unit does not start despite high humidity; continuity test fails.

Part: Humidity sensor

Control board failure

How to Identify: Other components test good but unit still wonâ€™t run; control board shows signs of damage or fails to respond.

Part: Control board

Compressor failure (unit no cooling)

How to Identify: No cooling or water collection despite running fan; compressor continuity test fails; unusual noises.

Part: Compressor

Pump or drainage system issues

How to Identify: Continuous drain models show pump light errors, water leakage, blocked or kinked hose affecting operation.

Part: Pump/drainage hose

DIY Solutions

Test and Replace Bucket Float Switch

Moderate 30-60 minutes

Tools Needed: multimeter, screwdrivers

Unplug the dehumidifier and remove the water bucket
Locate and access the float switch
Use a multimeter to test continuity of the float switch
If no continuity, remove and replace with a compatible part
Reassemble and test operation

⚠️ Safety First: Unplug unit before opening

Clean or Replace Air Filter

Easy 10-15 minutes

Tools Needed: vacuum or soft brush, mild detergent (optional)

Turn off and unplug the unit
Remove the air filter from its housing
Vacuum or wash the filter with mild detergent
Allow filter to dry completely
Reinstall filter and power on the unit

Check Room Temperature and Move Unit

Easy 5 minutes

Check ambient temperature where unit is placed
Move unit to a warmer room if operating below recommended range
Allow unit to run and observe operation

Inspect and Unblock Drain Hose (for pump/continuous models)

Moderate 15-30 minutes

Tools Needed: flexible rod/zip tie

Unplug unit and detach drainage hose
Check for kinks or obstructions
Use rod to gently clear blockages
Reattach hose and test drainage

Professional Repairs

Replace Humidistat or Humidity Sensor

Estimated Cost: $40 - $120

Control Board Replacement

Estimated Cost: $100 - $250

Compressor Replacement or Unit Replacement

Estimated Cost: $200 - $500+

Pump Motor Repair (Continuous Drain Models)

Estimated Cost: $80 - $200

When to Call a Professional

Multimeter tests indicate control board or compressor failure

Internal electrical components show damage or burning smell

Persistent operation failure after DIY tests and replacements

Pump issues beyond simple hose blockage

Preventive Maintenance

Clean air filter: Airflow restriction and poor performance
Frequency: biweekly or monthly
Ensure proper room temperature: Coldâ€‘related shutdown or frozen coils
Frequency: As needed
Inspect drainage and hoses: Pump blockage and drainage issues
Frequency: monthly (for continuous drain models)

Frequently Asked Questions

Why is my Whirlpool Dehumidifier not operating properly?

Common causes include a faulty bucket float switch, humidistat failure, or a dirty air filter restricting airflow.

How do I fix Whirlpool Dehumidifier not operating properly myself?

You can test and replace the bucket float switch, clean the air filter, or check the room temperature for optimal operation.

How much does it cost to fix not operating properly?

Professional repair costs range from $40 for a humidistat replacement to over $500 for compressor issues.

When should I call a technician for not operating properly?

If DIY fixes do not resolve the issue or if the control board or compressor may need replacement, it's time to call a technician.

References & Sources

Whirlpool Dehumidifier Common Problems Community

Community Analytical Insights

Analysis based on real user discussions from appliance repair communities

Can I Fix This Myself?

75%

DIY Success Rate Difficulty: Either

Common Issues Reported by Users

Dirty or clogged air filter
Faulty humidity sensor
Low refrigerant levels

User Suggested Solutions

Clean or replace the air filter. Unplug the dehumidifier, remove the filter, and clean it with warm soapy water. Allow it to dry completely before reinstalling or replace it if damaged.
Test and replace the humidity sensor if necessary. Use a multimeter to check the sensor's resistance and replace it if it's out of specifications.
Check refrigerant levels. If low, contact a professional to recharge the refrigerant as this requires specialized tools and knowledge.