E4
Mitsubishi Heavy
Mitsubishi Heavy air conditioner error E4
Meaning
Incorrect address
General meaning for the brand's models, unless a model's own manual says otherwise.
How the unit shows it
- Receiver Unit Red LED: Keeps Flashing
- Indoor Circuit Board Red LED: Flashes Once
- Indoor Circuit Board Green LED: Keeps Flashing
- Outdoor Circuit Board Red LED: Stays Off
Causes and how to check
- 1 possible causes
- the cited manual page, and follow-up questions
No account needed to look up codes.