LG Mini Split Error Code CH10: How to Fix It

Medium 45-90 minutes High Severity Verified June 2026
Error Code
CH10
Brand
LG
Product Type
mini_split
Severity
High
DIY Difficulty
Medium
Estimated Fix Time
45-90 minutes
The CH10 error code on your LG mini split indicates the indoor BLDC fan motor is locked or experiencing mechanical resistance. This error prevents proper air circulation and can damage the motor if not addressed promptly.
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Tools You'll Need

How to Fix Error Code CH10

  1. Power Off and Safety Check

    Always disconnect power before servicing electrical equipment to prevent shock or electrocution.
  2. Remove Indoor Unit Cover

  3. Inspect Fan Blades for Obstructions

  4. Test Fan Movement by Hand

    Be gentle when rotating the fan to avoid damaging the blades or motor shaft.
  5. Clean Fan and Housing

  6. Check Motor Connections

    Do not attempt to repair damaged wiring yourself - contact a qualified technician for electrical repairs.
  7. Test Motor Resistance

    Ensure power is completely disconnected before taking electrical measurements.
  8. Reassemble and Test

Parts You May Need

Indoor fan motor (BLDC type)
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Motor mounting screws
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Wire connectors
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Indoor fan motor (BLDC type)
Check Price on Amazon
Motor mounting screws
Check Price on Amazon
Wire connectors
Check Price on Amazon
Indoor fan motor (BLDC type)
Check Price on Amazon
Motor mounting screws
Check Price on Amazon
Wire connectors
Check Price on Amazon
Indoor fan motor (BLDC type)
Check Price on Amazon
Motor mounting screws
Check Price on Amazon
Wire connectors
Check Price on Amazon
Indoor fan motor (BLDC type)
Check Price on Amazon
Motor mounting screws
Check Price on Amazon
Wire connectors
Check Price on Amazon
Indoor fan motor (BLDC type)
Check Price on Amazon
Motor mounting screws
Check Price on Amazon
Wire connectors
Check Price on Amazon
Indoor fan motor (BLDC type)
Check Price on Amazon
Motor mounting screws
Check Price on Amazon
Wire connectors
Check Price on Amazon
Indoor fan motor (BLDC type)
Check Price on Amazon
Motor mounting screws
Check Price on Amazon
Wire connectors
Check Price on Amazon
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When to Call a Professional

Call a professional HVAC technician if the motor windings test faulty, if you're uncomfortable working with electrical components, if the motor requires replacement, or if the error persists after cleaning. Motor replacement requires refrigerant handling and specialized tools.

Frequently Asked Questions

What causes LG mini split error code CH10?
Error CH10 is caused by the indoor fan motor being locked or unable to rotate freely. Common causes include dust buildup, foreign objects in the fan, worn motor bearings, or a failed BLDC motor.
Can I reset the CH10 error code myself?
The CH10 error cannot be simply reset - the underlying cause must be fixed first. After addressing the motor or obstruction issue, the error should clear automatically when the unit operates normally.
Is it safe to run my LG mini split with a CH10 error?
No, do not continue running the unit with a CH10 error. This can cause permanent damage to the fan motor and reduce system efficiency. Address the issue immediately to prevent costly repairs.
How much does it cost to fix a CH10 error on an LG mini split?
Cleaning and basic maintenance typically costs $100-200 if done professionally. Motor replacement can cost $300-600 including labor, depending on the unit model and local service rates.
How often should I clean my LG mini split to prevent CH10 errors?
Clean your indoor unit every 2-3 months during heavy use periods. Regular maintenance including filter cleaning and professional annual service helps prevent motor issues and extends system life.