What it means
This comes from LG's US page for portable, window and through-the-wall units. LG Africa says some models show their CH61 overheating fault as CH34.
What to check, in order
- Shade the unit
LG suggests an awning over the air conditioner to keep direct sun and weather off it.
- Keep the coils clean
LG says to clean the condenser coils regularly so air can flow through. Unplug it first and take care with the sharp fins.
- Turn it up rather than off
When you go out, LG suggests setting a higher temperature instead of switching the unit off completely.
When to call an engineer
If CH34 keeps coming back after this, LG says the unit needs a repair service.
Quick answers
What does the LG CH34 error code mean?
A safety relay has switched the unit off because of abnormal pressure in its sealed system. LG says this is not a defect but protection against overheating. This comes from LG's US page for portable, window and through-the-wall units. LG Africa says some models show their CH61 overheating fault as CH34.
Can I fix LG CH34 myself?
Easy (about 20 minutes). Start with: shade the unit; keep the coils clean; turn it up rather than off. If CH34 keeps coming back after this, LG says the unit needs a repair service.
Is LG CH34 worth repairing?
Usually free. LG treats it as a protection trip, not a fault. Shade and clean coils usually stop it.
Checked against
- LG USA: Room air conditioner (portable, window, through-the-wall) error codes
- LG Africa: LG Air Conditioner, Guide to Error Codes
Last reviewed October 2026. Manufacturers update their pages, and your manual is the final word. Spotted a mistake? Email contact@appliance-error-codes.com.