Heat Controller MSS-009B/A - Indoor Unit Disassembly (18 k, 24 k Models); Removing the Grille; Removing the Control Box

(2)
18k,
24k
Models(Cooling Only,
Cooling &
Heating)
I
Hazardous voltage
can
cause ELECTRIC
SHOCK
or DEATH.
Turn
off
circuit breaker before you start
checking or servicing.
1. To remove
the
Grille
from the Chassis
"
Set the
up-and-down
air
discharge
lower to open
position
(horizontally) by
finger pressure.
" Remove the
securing
screws
at the bottom
of
grille.
"
To remove
the Grille,
pull the
lower left and right
side
of the grille toward you
(Slightly
tilted) and
lift it
straight
upward.
2. To remove the
Control
Box
" Remove the
thermisters. One
from
thermistor
holder on
evaporator, the
other from pipe
holder.
" Remove step
motor connector
from main P. C.
B.
" If necessary,
disconnect DC power supply
cord
from pillar
terminal, and remove
the
clip screw.
(Be
careful not to lose the clip
when
reassem-
bling)
Screw (3places)
-46-
0
0
Grille
Chassis