Mitsubishi Heavy air conditioner error E5
Meaning
Interconnecting cable
General meaning for the brand's models, unless a model's own manual says otherwise.
Meaning
Electrical noise
General meaning for the brand's models, unless a model's own manual says otherwise.
Meaning
Outdoor unit power
General meaning for the brand's models, unless a model's own manual says otherwise.
Meaning
Outdoor circuit board
General meaning for the brand's models, unless a model's own manual says otherwise.
Meaning
Outdoor/Indoor communication error
General meaning for the brand's models, unless a model's own manual says otherwise.
Meaning
Outdoor unit control PCB failure
General meaning for the brand's models, unless a model's own manual says otherwise.
Meaning
Outdoor power unit failure (where indoor/outdoor power supplies are separated); indoor/outdoor communication error; A and B wiring reversed after power on
General meaning for the brand's models, unless a model's own manual says otherwise.
Meaning
Outdoor unit microcomputer failure
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 Twice
- Indoor Circuit Board Green LED: Keeps Flashing
- Outdoor Circuit Board Red LED: Flashes Twice
Causes and how to check
- 3 possible causes
- the cited manual page, and follow-up questions
No account needed to look up codes.
Model series: SRK
Guides
- Communication error between indoor and outdoor unit: what to check, in which order
Communication (transmission) error codes usually come from the connecting wire, the supply or a board. The checks from easy to hard.