U7
Daikin
Daikin air conditioner error U7
Meaning
Communication error (outdoor control PCB and IPM PCB)
General meaning for the brand's models, unless a model's own manual says otherwise.
Meaning
Communication failure between outdoor units
General meaning for the brand's models, unless a model's own manual says otherwise.
Meaning
Communication failure, between outdoor PCB's
General meaning for the brand's models, unless a model's own manual says otherwise.
Meaning
Malfunction of transmission between outdoor units or outdoor storage unit
General meaning for the brand's models, unless a model's own manual says otherwise.
Causes and how to check
- 3 possible causes
- the cited manual page, and follow-up questions
No account needed to look up codes.
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.