LG · Ductless air conditioner
CH34
Power reset onlyalert
LG CH34 is a model-dependent overheating-protection display in the same group as CH61.
Market, product family, and model applicability
US · en-US · LG air conditioners whose model displays CH34 for the cited overheating-protection condition
product family applicable: The official source applies at the product-family level. Exact controls can still vary by model.
Check the official model/manual lookup (opens in a new tab)What you can do now
Use only the supported exterior airflow or filter check, then power cycle.
- Clear only exterior airflow obstructions or clean the accessible filter for the active mode.
- Disconnect power for five minutes and restore it.
Stop and get service when
Persistent CH34 requires LG inspection.
- Request LG service if CH34 persists.
Do not do
Do not move installed equipment or work on electrical, fan, compressor, piping, or refrigerant components.
Limit work to accessible filters and exterior ventilation.
If the message returns
If CH34 persists, request LG service.
Source and scope
Official manufacturer source- Market and locale
- US · en-US
- Product family
- cooling and heat-pump air conditioners
- Official source last checked
- July 26, 2026
- Review status
- Automated evidence review completed · Owner-delegated approval
LG
[LG Air Conditioner] Guide to Error Codes · Official error-code index
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