What CH Means
A general CH error code indicates a refrigerant leak, per LG's dehumidifier Help Library article, which states there are no troubleshooting steps available for this code. Note this is a separate LG document from the air-conditioner CH-code list elsewhere in this file - the dehumidifier and air-conditioner platforms use their own independent CH numbering, so a dehumidifier CH is not the same fault as any air-conditioner CH code even where the digits happen to look similar.
Common Causes of CH
- Refrigerant leak somewhere in the dehumidifier's sealed system
🔧 One Safe Check You Can Try
There's no owner-level fix documented for this code - the unit will require repair service.
⚠ Why You Shouldn't Go Further Than That
- Refrigerant system repairs legally require EPA-certified handling and aren't a DIY part on any refrigerant-based appliance, dehumidifiers included.
- LG's own documentation goes straight to "the unit will require repair service" for this code, without an interim troubleshooting step, because there's no safe way to verify or address a refrigerant leak without the right equipment.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.