Air Conditioner error codes and troubleshooting guides
Browse 7,667 published fixes across 15 brands and 233 model hubs. Start with a brand or model, then open the exact code guide.
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LG Wave 4i error code CH66 means communication line/piping connection issue. This guide explains the likely causes, the safest first checks, and when support o...
LG Wave 4i error code CH66 means communication line/piping connection issue. This guide explains the likely causes, the safest first checks, and when support o...
LG Pure 8S error code CH67 means outdoor fan issue. This guide explains the likely causes, the safest first checks, and when support or service is the better n...
LG Pure 8S error code CH67 means outdoor fan issue. This guide explains the likely causes, the safest first checks, and when support or service is the better n...
LG Wave 4i error code E0 means indoor-outdoor communication error. This guide explains the likely causes, the safest first checks, and when support or service...
LG Wave 4i error code E0 means indoor-outdoor communication error. This guide explains the likely causes, the safest first checks, and when support or service...
LG Wave 9S error code CH61 means outdoor overheat in cooling or indoor overheat in heating. This guide explains the likely causes, the safest first checks, and...
LG Wave 9S error code EF means outdoor fan issue. This guide explains the likely causes, the safest first checks, and when support or service is the better nex...
LG Ultra 8Pro error code CH10 means indoor fan issue. This guide explains the likely causes, the safest first checks, and when support or service is the better...
LG Wave 9S code CH91 means test-run protection display. This guide explains the likely causes, the safest first checks, and when support or service is the bett...
LG Wave 9S code CH90 means test-run protection display. This guide explains the likely causes, the safest first checks, and when support or service is the bett...
LG Wave 9S error code CH04 means condensate not draining / tank full. This guide explains the likely causes, the safest first checks, and when support or servi...