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
- Unplug the dehumidifier from power.
- Wait at least 3–5 minutes to allow internal capacitors to discharge.
- Ensure water bucket is properly seated and empty.
- Plug unit back in and power on to see if CH01 clears.
Technician Only Inspect and repair internal sensor circuitry
- Disconnect power to the unit.
- Remove access panels to locate humidity and temperature sensors and their wiring harness.
- Check for loose, corroded, or damaged connectors and repair or replace as needed.
- If sensors are faulty, replace with genuine LG parts.
- 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)
- 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.
Next step
Choose the next step for CH01
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
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.
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.
Temperature Sensor
Monitors the internal temperature to ensure correct operation and prevent overheating.
Wiring Harness
Connects controls, sensors, motors, and other electrical components inside the appliance.
HVAC Control Board
Controls fan, compressor, sensor, and communication functions in the HVAC unit.
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.
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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
- LG Dehumidifier - Error Code List (official)
Data last verified: 2026-07-26
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