Installing the Outdoor Unit
Remove electrical connection access plate (either right hand side or front) from the outdoor unit.
Replace access plate (either right hand side or front) on the outdoor unit.
Incorrect 
unit failure.
has been fitted, 
Remove electrical connection access plate (either right hand side or front) from the outdoor unit.
Replace access plate (either right hand side or front) on the outdoor unit.
Incorrect unit failure.
has been fitted,