Mitsubishi MSZ-FS06NA 6,000 BTU Compact Wall-Mount Indoor Unit EA Error Fix: Indoor Unit Address / Connector Error

Error code EA on the Mitsubishi MSZ-FS06NA 6,000 BTU Compact Wall-Mount Indoor Unit means: Indoor Unit Address / Connector Error. The indoor unit has an incorrect address setting or a connector fault on the PCB. In multi-zone systems (paired with MXZ outdoor units), each indoor unit must have a unique address set via DIP switches on the indoor PCB. If two indoor units share the same address, both display EA. In single-zone systems, this usually indicates a connector issue on the PCB. Check DIP switch settings against the installation manual.

The most successful fix is "Inspect and Repair Indoor PCB Connectors or Replace PCB" (medium difficulty, ~60 minutes). Estimated DIY cost: $0-$10. HomeMD has 2 community-ranked fixes for this error.

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Yes — the top-ranked community fix ("Inspect and Repair Indoor PCB Connectors or Replace PCB") is rated medium difficulty and takes about 60 minutes. Tools needed: Phillips screwdriver, Electrical contact cleaner, Small brush, Multimeter.

DIY cost: $0-$10. Professional repair typically costs $180-$300. Many homeowners save money by trying the top-ranked community fix first.

The Mitsubishi MSZ-FS06NA 6,000 BTU Compact Wall-Mount Indoor Unit has 8 other known error codes, including: E1 (Remote Controller PCB Error), E2 (Remote Controller Signal Receiving Error), E3 (Remote Controller Communication Error), E4 (Indoor Unit PCB Processor Error), E5 (Indoor/Outdoor Communication Error (Legacy)), and 3 more.

Error code EA also appears on 8 other Mitsubishi models: MLZ-KP09NA 9,000 BTU One-Way Ceiling Cassette Indoor Unit, MSZ-EF15NA 15,000 BTU Designer Series (Kirigamine Zen) Wall-Mount Indoor Unit, MSZ-FH12NA 12,000 BTU Hyper-Heat H2i Wall-Mount Indoor Unit, MSZ-GL09NA 9,000 BTU Wall-Mount Ductless Mini-Split Indoor Unit, MSZ-GL12NA 12,000 BTU Wall-Mount Ductless Mini-Split Indoor Unit, SEZ-KD12NA 12,000 BTU Ceiling-Concealed Ducted Indoor Unit, and 2 more. The fix may vary by model, so check each model's specific page for tailored repair steps.