Hitachi RAS-E10H2 - INDOOR UNIT ELECTRIC PARTS DISASSEMBLY

FIXTURE SCREW
FIXTURE SCREW
ON
OFF
Remo
ving the indicating
P.
W.
B.
1.
Remo
ve
the
connector
from
the
CN2
on
the control
P.
W.
B.
2.
Remo
ve
the
upper
hook
from
the
Indicating
When
installing
the
pa
rt
s,
u
se
caution
not
to
pinch
an
y
cod
e
between the pa
rt
and cabinet.
Remo
ving electrical pa
rt
s
1.
Remo
ve
the electr
ical par
ts co
ve
r.
2.
Remo
ve
the
connectors
from
the
CN1
(heat
e
xchange
ther
mistor), CN4 (stepping motor) and CN10 (f
an motor).
3.
Remo
ve
two loc
k scre
ws
.
4.
Remo
ve
the electr
ical par
ts in the direction of arro
w.
Remo
ving cont
ro
l
P.
W
.B.
W.B.W
1.
Remo
ve
the
connectors
from
the
CN2
and
CN3.
2.
Remo
ve
the
P.
W.
B.
from
the
P.
W.
B.
suppor
t.
MODEL RAS-E10H2
STRUCTURE OF AN INDOOR UNIT ELECTRIC PARTS
ELEC. COVER
P.W.B. SUPPORTER
P.W.B. SUPPORTER
P.W.B. SUPPORTER
P.W.B. SUPPORTER
CN2
CN3
CN8
INDICATING P.W.B.
HOOK
INDICATING P.W.B.
HOLDER
P.W.B.
lock
resin,
pull
the
P.W.B.,
forward
a little and remove it.
ICP2
ICP1
12V
Power circuit
12V line
5V line
ZD121
20V
Zener Diode
0V
5V
Power circuit
M
35V line
ICP1
OK
Q111
S
D
G
IC11
1
0V
OK
Lock
Press her
e
Unlock
Forbidden area (Gate (G) to 0 V)
35 V line
S: Source
D: Drai
n
G: Gat
e
Forbidden
area
Indoor unit fan motor
- 72
-