Mitsubishi · Mini-split
E0 Power source reversed / remote controller issue
What this code means
On some models this flags reversed power supply polarity; on others it's a remote controller communication issue.
Most likely causes
- Power supply wired with reversed polarity
- Remote controller signal fault
What to try first
Not a DIY electrical fix — needs a licensed technician to check the power wiring.
Safety note: if this code returns after one clean reset, stop resetting it — repeated lockouts usually mean a real fault that needs a licensed technician. Never bypass a safety switch.
FAQ
What does Mitsubishi error code E0 mean?
Power source reversed / remote controller issue. On some models this flags reversed power supply polarity; on others it's a remote controller communication issue.
Can I fix Mitsubishi code E0 myself?
Usually not. Not a DIY electrical fix — needs a licensed technician to check the power wiring. If the code returns after one reset, it needs a licensed technician.
What causes Mitsubishi code E0?
The most common causes are: power supply wired with reversed polarity; remote controller signal fault.
Other Mitsubishi mini-split codes
All Mitsubishi mini-split error codes →
Other mini-split brands: Daikin · LG · Fujitsu · Gree · Carrier · Generic · Panasonic
This information may contain errors or not apply to your exact model — always double-check it against your appliance's own manual before acting. If there's any chance of a gas, fire, electrical, carbon monoxide, or other safety hazard, stop and call a licensed professional or the appropriate agency (e.g. your gas utility) instead of relying on this page alone.