Lg Dehumidifier Error CH01

⚡ Quick Answer: The LG dehumidifier error code CH01 indicates a malfunction in the humidity sensor, which may lead to erratic readings or prevent the unit from operat... ✅ DIY Fixable

What Does Error CH01 Mean?

The LG dehumidifier error code CH01 indicates a malfunction in the humidity sensor, which may lead to erratic readings or prevent the unit from operating correctly. This issue can stem from a faulty humidity or temperature sensor, a bad connection, or a control board issue affecting sensor readings.

Common Symptoms:

  • Error code CH01 displayed on panel
  • Unit fails to operate or stops shortly after attempting to run
  • Possible false full bucket indication alongside CH01
  • No normal dehumidification despite power

Possible Causes

  • Humidity or temperature sensor malfunction or bad connection (high)
  • Faulty control board connection affecting sensor readings (medium)

How to Fix Error CH01

DIY Fix Basic reset and initial checks

  1. Unplug the dehumidifier from power.
  2. Wait at least 3–5 minutes to allow internal capacitors to discharge.
  3. Ensure water bucket is properly seated and empty.
  4. Plug unit back in and power on to see if CH01 clears.

Technician Only Inspect and repair internal sensor circuitry

  1. Disconnect power to the unit.
  2. Remove access panels to locate humidity and temperature sensors and their wiring harness.
  3. Check for loose, corroded, or damaged connectors and repair or replace as needed.
  4. If sensors are faulty, replace with genuine LG parts.
  5. Verify control board connections and test for proper communication between sensors and board.

Parts needed: Humidity sensor, Temperature sensor, Sensor wiring harness, Control board (if determined faulty)

🛑 When to Call a Pro:
  • If CH01 persists after reset and basic checks, call professional service.
  • If there are signs of electrical damage such as burning smell, smoke, or unusual noises.

Technical Specifications

wattage 300W
component Humidity Sensor
resistance 10-20 ohms
part_number LG 4681A20001D
voltage_rating 120V AC

Common Questions

What does CH01 error mean on lg dehumidifier?

CH01 indicates a humidity sensor malfunction, causing erratic readings or operational failure.

Can I fix lg dehumidifier CH01 error myself?

Yes, try unplugging the unit for 3-5 minutes and ensure the water bucket is properly seated and empty.

How much does it cost to fix CH01 error?

Repair costs typically range from $75 to $250, depending on the specific part that needs replacement.

When should I call a technician for CH01?

Call a professional if CH01 persists after basic troubleshooting or if you notice signs of electrical damage.

Sources & References

Data last verified: 2026-01-10

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