TCL
Air Conditioner Service Manual
18K 24K
1
0
.4. Current flow
CN7
(
LEV
)
CN2
(OHT)
CN1
(OPTOAT)
CN3
(OVT)
CN401
(485-COM)
CN409
For
programmed
CN407
For EEPROM
programmed
C N
H
L
CN410
(OUTFAN)
P2
(ACN)
P3
(S)
P1
(ACL)
P00
P01
P5-1
、
P8
(VAL)
Electric reactor
PC monitor
P10-1(U)
P10-2(V)
COMP.
(
Re
d
)
(
Wh
ite
)
(
Bl
u
e
)
T
o
i
ndo
o
r uni
t
E
x
pa
ns
io
n v
a
lv
e
Suc
ti
o
n T
e
m
p
se
ns
o
r
O
u
t d
o
or
c
o
il
T
em
p
s
e
ns
or
O
u
td
oo
r am
b
ie
n
t T
e
m
p
se
n
so
r
C
O
M
P
. t
o
p
T
e
m
p
pr
o
te
ct
io
n
E
x
ha
us
t T
e
m
p.
s
en
so
r
CN12
(
ORQ
)
P13(L)
P14(L)
P10-3(W)
P9
(DCFAN)
CN11
(HEAT)
DRM
1
DR
M
-C
OM
DRM
2
DRM
3
CN13
U603
IPM
Q403 IGBT
DN401
rectifier
D412
Fast recovery
diode
Indoor unit
outdoor unit
Power
supply
compressor
Indoor
unit
PCB
Outdoor
unit
PCB
Li
ve
Neutr
al
G
ro
und
live
Neutral
Communication
wire
Ground
U
V
W
32