48
Installation and Maintenance
Service Manual
Step 
Procedure 
Points 
4. Opening and closing of service cover  
Ƶ
Remove a service 
cover mounting screw. 
Open service cover 
upward. 
not provided in particular. 
5. Removal of front grille assembly 
screws 
Ƶ
Screw stoppers inside the 
the existing models are not 
provided. 
Ƶ
At the upper part there are 2 
hooks in the left and the 
right. 
Remove the 5 screws, 
in the right and the left, 
with the front grille. 
a
Ƶ
Disengage the hooks by 
pressing knobs with a 
screwdriver. 
Disengage the 3 hooks 
on the upper part. 
In case that the hooks 
are not pressed from 
above, remove the front 
panel and then remove 
the grille while pushing 
the hook through a 
clearance between the 
front grille and the heat 
exchanger. 
b
The front grille can be 
removed in a manner to 
pull out the upper part 
forward and lift up the 
lower part. 
c
Hooks 
Left 
Center 
Right