What does error code EE mean on a Mitsubishi Electric mini-split?

Indoor/outdoor combination error. The indoor and outdoor units aren't a compatible combination.

Can I fix Mitsubishi Electric code EE myself?

Start with these safe checks: Note the code. This is an installation issue for the installer.

When should I call a technician for code EE?

This is an installation issue for the installer. Don't open the sealed refrigerant system, cut or braze lines, or add refrigerant. That needs an EPA-certified technician. Turn power off at the breaker or disconnect before opening any panel, and leave capacitors, compressors and control boards to a pro: they can hold a dangerous charge even with the power off.

Mitsubishi Electric mini-split error code

Mitsubishi Electric mini-split code EE / 7 blinks: Indoor/outdoor combination error

Mitsubishi Electric Mr. Slim indoor units

What EE means

The indoor and outdoor units aren't a compatible combination.

Also shown as: 7 blinks, depending on the model.

Likely causes

Mismatched equipment or settings

Safe first checks

Note the code.

When to stop

This is an installation issue for the installer.

Checked against: Mitsubishi Electric, Mr. Slim indoor/outdoor unit malfunction-diagnosis check codes (2024-11-18). Codes can differ by model and year, so confirm with your owner's manual.