Mini-split error code lookup

Type the code shown on the unit or remote (or the blink count). Every result shows what it means, what to check and a guide to fix it.

Codes depend on the control board, so each chart names the furnace series it came from. Always confirm against the unit's manual.

Charts by brand

Fix guides

• Communication errors between indoor and outdoor units
• Flare connections (most common leak point)
• Pulling a deep vacuum after a repair