LG Mini Split Error Code CH22: How to Fix It

Q: What causes LG mini split error code CH22?

CH22 is caused by the current transformer detecting abnormally high compressor current, usually due to a faulty CT sensor, loose electrical connections, or actual compressor problems that cause it to draw excessive power.

Q: Can I reset CH22 error code on my LG mini split?

You can try resetting by turning off the unit for 5 minutes and restarting, but CH22 typically returns immediately if the underlying electrical issue isn't resolved. The error indicates a safety concern that needs proper diagnosis.

Q: Is it safe to run my LG mini split with CH22 error?

No, you should not continue running the unit with CH22 error. This code indicates potentially dangerous electrical conditions that could damage the compressor or create fire hazards. Turn off the system until the problem is resolved.

Q: How much does it cost to fix CH22 error on LG mini split?

Repair costs vary widely depending on the cause. A simple CT sensor replacement may cost $100-200, while compressor issues can cost $800-2000. Professional diagnosis typically costs $100-150 to determine the exact problem.

Q: Can a dirty condenser cause CH22 error?

While a severely dirty condenser can cause the compressor to work harder and draw more current, CH22 specifically indicates a current sensor problem rather than just high current from poor heat exchange. Clean the condenser, but also check the electrical components.

Abstract

LG mini split error code CH22 indicates a critical problem with the compressor's current sensor (CT sensor) detecting abnormally high input current. This error typically points to electrical issues with the compressor, wiring problems, or a faulty current transformer that monitors the compressor's electrical consumption.