LG
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⛔ Do Not Use
LG - Error Code CH67
LG Mini-Split error code CH67: DC link low voltage protection.
Is it safe?
⛔ No — stop using
Stop using — voltage issues can damage electronics or cause fire. Check the circuit breaker and outlet.
Can I fix it?
Technician Recommended
Tools: Multimeter, Non-contact voltage tester
Repair cost
DIY: $0–$50 (if breaker or outlet)
Pro: $100–$400
⏱ 30–90 min
What Does Error Code CH67 Mean?
LG Mini-Split error code CH67: DC link low voltage protection.
Part that typically fails: Power supply / circuit breaker / outlet
Stop using — voltage issues can damage electronics or cause fire. Check the circuit breaker and outlet.
Symptoms You May Notice
- ⚠️ Error code on display
- ⚠️ System not cooling or heating
- ⚠️ Unit shutting down unexpectedly
Troubleshooting Steps
- 1 Check your owner's manual for model-specific guidance on error code reset procedures
- 2 If the error persists after reset and basic checks, contact a qualified technician
🛠️ Tools needed: Multimeter, Non-contact voltage tester
· Time: 30–90 min
⚡ Quick tip: Always try a full power reset first — turn the unit off at the breaker, wait 30 seconds, restore power.
Frequently Asked Questions
What does LG Mini-Split error code CH67 mean? ▼
Error code CH67 on a LG ductless mini-split system indicates: DC link low voltage protection. The unit has detected this condition and has limited or stopped operation to prevent further damage.
How do I fix LG Mini-Split error code CH67? ▼
Start by powering the unit off for 30 seconds and restarting. If error CH67 returns, the underlying cause (dc link low voltage protection) needs to be addressed. Check wiring connections and filters first before replacing components.
Is LG error code CH67 serious? ▼
It depends on the root cause. Some CH67 errors resolve with a reset. Others indicate a failed component that requires professional repair. Don't continue operating with this error — it can lead to further damage.