LG
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⚠️ Use With Caution
LG - Error Code CH45
LG Mini-Split error code CH45: AC input overcurrent protection.
Is it safe?
⚠️ Use with caution
Stop using until the cause is identified. Check your owner's manual for model-specific guidance.
Can I fix it?
Technician Recommended
Tools: Multimeter, Screwdriver set
Repair cost
DIY: Varies
Pro: $100–$500
⏱ 30–120 min
What Does Error Code CH45 Mean?
LG Mini-Split error code CH45: AC input overcurrent protection.
Part that typically fails: See description above
Stop using until the cause is identified. Check your owner's manual for model-specific guidance.
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, Screwdriver set
· Time: 30–120 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 CH45 mean? ▼
Error code CH45 on a LG ductless mini-split system indicates: AC input overcurrent 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 CH45? ▼
Start by powering the unit off for 30 seconds and restarting. If error CH45 returns, the underlying cause (ac input overcurrent protection) needs to be addressed. Check wiring connections and filters first before replacing components.
Is LG error code CH45 serious? ▼
It depends on the root cause. Some CH45 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.