Lg Dehumidifier Error CH03

⚡ Quick Answer: The LG dehumidifier CH03 error code indicates a malfunction in the humidity sensor or main control board, leading to erratic display readings and pote... ✅ DIY Fixable

What Does Error CH03 Mean?

The LG dehumidifier CH03 error code indicates a malfunction in the humidity sensor or main control board, leading to erratic display readings and potential failure of the unit to operate effectively. This electronic abnormality can disrupt the dehumidification process, requiring diagnosis and repair to restore functionality.

Common Symptoms:

  • Error code CH03 displayed on dehumidifier panel
  • Unit may stop operating or cease dehumidification function

Possible Causes

  • Electronic abnormality within dehumidifier system (e.g., sensor or main control issue) (high)

How to Fix Error CH03

DIY Fix Basic checks and reset

  1. Unplug the dehumidifier from power
  2. Wait at least 3–5 minutes
  3. Plug the unit back in and power on to see if error clears

Technician Only Inspect and diagnose electronic components

  1. Check humidistat sensor and related wiring harness for loose connections or damage
  2. Inspect main control board for signs of failure or error indicators
  3. Use diagnostic tools (multimeter) to test sensor outputs and board voltages

Parts needed: humidistat sensor, control board signs, wiring harness

🛑 When to Call a Pro:
  • If repeated resets do not clear CH03
  • If inspection reveals damaged sensors or control board components

Technical Specifications

wattage 300W
component Humidity Sensor
resistance 5-15 ohms
part_number LG 4681A2001A
voltage_rating 120V AC

Common Questions

What does CH03 error mean on lg dehumidifier?

CH03 indicates a malfunction in the humidity sensor or control board, affecting performance.

Can I fix lg dehumidifier CH03 error myself?

Yes, try unplugging the unit for 3–5 minutes, then power it back on.

How much does it cost to fix CH03 error?

Repair costs range from $50 to $250+, depending on parts and service.

When should I call a technician for CH03?

Call if resets don't clear the error or if damaged components are found.

Sources & References

Data last verified: 2026-01-10

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