Mitsubishi Electric Mini-Split Code EE
Hard lockout
Combination error between the indoor and outdoor units. The indoor unit and outdoor unit that are wired together are not an approved pairing.
Manual wording: “EE - Combination error between indoor and outdoor units”
Documented for: A-Control indoor and outdoor units
Likely causes, most common first
- Indoor unit model and outdoor unit model are not a permitted combination
- Wrong indoor unit connected during a replacement
When to call a technician
The equipment pairing has to be corrected against Mitsubishi's compatibility table. Call a technician or the installer.
A Mitsubishi Electric mini-split throwing this code repeatedly has a reason — clearing the code without fixing the cause just hides it.
Sources
- Service Manual No. OCH750 Revised Edition-E - PUZ-HA Outdoor Units (May 2024) (Mitsubishi Electric, PUZ-HA24NHA1, PUZ-HA30NKA, PUZ-HA36NKA, PUZ-HA42NKA1 heat-pump outdoor units) · checked 2026-08-25
- Indoor Unit Service Manual No. OCH761 Revised Edition-A - PKA-A LA Series (May 2021) (Mitsubishi Electric, PKA-A12LA, PKA-A18LA, PKA-A12LA.TH, PKA-A18LA.TH wall-mounted indoor units) · checked 2026-08-25