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COMP.
CN409
For
programmed
U603
IPM
CN407
For EEPROM
programmed
D412
Q403 IGBT
Fast recovery
diode
DN401
rectifier
10.4. Current flow
Power supply
Indoor unit PCB
Indoor unit
Air Conditioner Service Manual
CN7
CN2
CN1
（LEV）
(OHT)
(OPTOAT)
P10-1(U)
P9
P10-2(V)
(DCFAN)
P10-3(W)
P14(L)
P13(L)
Electric reactor
live
Neutral
wire
Communication
Ground
CN13
CN3
CN12
（ORQ）
(OVT)
C N
CN11
(HEAT)
(OUTFAN)
P5-1、P8
CN401
(VAL)
(485-COM)
PC monitor
Outdoor unit
PCB
outdoor unit
P3
(S)
P2
(ACN)
H
L
P1
(ACL)
CN410
P00
P01
U
V
compressor
W
33
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