Lg Dehumidifier: not powering on

Professional Repair Guide

What is this symptom?

If your LG dehumidifier isn't powering on, you're not alone. Many users experience a complete lack of response when pressing the power button, despite the unit being plugged into a functioning outlet. This issue can stem from various causes, including power supply problems, a defective water bucket safety switch, or issues with the control board.

Urgency: Medium

Possible Causes

Power supply or outlet issue

How to Identify: Unit receives no power at all — no lights, no display, and testing the outlet with another appliance fails or breaker/GFCI is tripped.

Part: Power cord and outlet

Water bucket safety switch engaged or defective

How to Identify: Unit won’t start even if plugged in; bucket not seated correctly or float mechanism stuck in the “full” position, preventing power on.

Part: Bucket float switch

Control board or electronic component failure

How to Identify: Outlet and power cord are confirmed good; bucket and safety switches are correct; still no response; possibly other symptoms like display dead.

Part: Main control board or power electronics

Faulty humidistat or humidity sensor

How to Identify: Unit fails to turn on because sensor doesn’t detect humidity level threshold; may correlate with extremely dry conditions but can be internal fault.

Part: Humidistat/humidity sensor

Preventive Maintenance

  • Clean and inspect water bucket float and sensor regularly: Bucket switch misreads and prevents operation
    Frequency: monthly
  • Inspect power cord for damage: Power supply failures leading to no‑power symptom
    Frequency: monthly

Frequently Asked Questions

Why is my LG Dehumidifier not powering on?
Common causes include power supply issues, a defective water bucket safety switch, or control board failures.
How do I fix LG Dehumidifier not powering on myself?
Currently, no DIY solutions are available for this specific issue.
How much does it cost to fix not powering on?
Professional repair costs can vary but typically range from $100 to $300, depending on the issue.
When should I call a technician for not powering on?
If the unit remains unresponsive after checking the power source, it's time to consult a technician.

Community Analytical Insights

Analysis based on real user discussions from appliance repair communities

Can I Fix This Myself?

60%
DIY Success Rate Difficulty: Either

Common Issues Reported by Users

  • Faulty mainboard causing no power or display
  • Defective power cord or plug
  • Tripped circuit breaker or blown fuse

User Suggested Solutions

  1. Check the power cord and plug for any visible damage. If damaged, replace the cord. Ensure the outlet is functioning by testing it with another device.

  2. Inspect the circuit breaker or fuse box. Reset the breaker or replace any blown fuses. If the issue persists, it may indicate a deeper electrical problem.

  3. If the mainboard is suspected, visually inspect for burnt components or damaged traces. If found, replace the mainboard. If not, consider professional diagnosis.

Analysis based on 1 community discussions
View Sources

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

  1. Anyone remember what a single beep means (code) on an LG deh...

Community Discussions

mainboard makes a single chirp, no power no display

Replaced capacitor but issue persists; considering replacing mainboard.

DIY View on Reddit →

Source: Reddit r/appliancerepair

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