-
60
-
'14 • SRK-T-170
(9) Check
i
ng the
i
ndoor electr
i
cal eq
ui
pment
(a) Indoor PCB check proced
u
re
Is there voltage between terminal
blocks
①
and
②
? (AC 220/230/240
V)
Indoor electrical components
are normal.
Is the voltage between terminal
blocks
②
and
③
oscillating between
DC 0 and 20V?
Inspect power source
for outdoor unit.
Replace fuse.
Replace indoor PCB.
Is the fuse burnt out? (3.15 A)
YES
YES
YES
NO
NO
NO
(b) Indoor
u
n
i
t fan motor check proced
u
re
1) Indoor PCB o
u
tp
u
t check
① ④
⑤
2) Fan motor re
sis
tance check
⑥
⑤
④
③
②
①
⑥
⑤
④
③
②
①
FM
I
DC15V
Indoor PCB
DC 308~336V
DC several V
(4~6 V)
CNU
(–)
GND
Blue
Yellow
White
Black
Red
M
ea
su
r
i
ng po
i
nt
Re
sis
tance when normal
① − ③
−
④ − ③
−
M
ea
su
r
i
ng
po
i
nt
Re
sis
tance when
normal
① − ③
④ − ③
⑤ − ③
k
