Willis WST12MC16S Service Manual page 64

9. Remove the indoor unit.
1
Remove the indoor unit
from the installation
plate.
2
Release the hook of the
piping fixture on the
back of the unit.
80
Liquid piping
Gas piping
Auxiliary piping
When the pipings are
disconnected, protect the
both openings from entering
moisture.
(R8019)
Piping fixture
Removal Procedure