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8.2.2 CU-E18SD3UA
t˚
t˚
t˚
NOISE FILTER
CIRCUIT
ELECTRONIC CONTROLLER
(NOISE FILTER)
FG1 (GREEN)
CN-WHT
(WHITE)
AC-WHT
(WHITE)
AC-BLK
(BLACK)
FUSE2
(T3.15A L250V)
L2-1
(GRAY)
GRY
GRY
TO INDOOR UNIT
CN-BLK
(BLACK)
BLK
WHT
CN-COM
(YELLOW)
CN-COM
(YELLOW)
WHT
WHT
WHT
WHT
1
4
1
2
REACTOR
1
BLK
BLK
Q10
N
1
4
3
3
1
1
1
6
M
4
1
7
CN-FM
(WHITE)
CN-TH1
(WHITE)
CN-TANK
(WHITE)
CN-EV
(WHITE)
R
Y
-HOT
ELECTRO-MAGNETIC COIL
(EXPANSION VALVE)
COMP. TEMP.
SENSOR
(THERMISTOR)
PIPING TEMP.
SENSOR
(THERMISTOR)
OUTDOOR AIR
TEMP. SENSOR
(THERMISTOR)
ELECTRO-MAGNETIC
COIL (4-WAY VALVE)
CN-HOT
(BLUE)
RECTIFICATION
CIRCUIT
RECTIFICATION
CIRCUIT
SWITCHING POWER
SUPPLY CIRCUIT
U
U
(RED)
RED
RED
BLK
BLU
YLW
WHT
3
COMPRESSOR
FAN MOTOR
M
MS
3
~
3
1 1
BLU
YLW
RED
BLU
YLW
(BLUE)
(YELLOW)
V
V
W
W
P
ELECTRONIC CONTROLLER (MAIN)
L2-0
(BLACK)
PFC
CIRCUIT
FUSE1
(T3.15A L250V)
1
2
1
L1 L2
2
3
RED
TERMINAL
BOARD
TERMINAL
BOARD
SINGLE PHASE POWER SUPPLY
BLK
WHT
4
COM3
(RED)
FUSE3
(25A, 250V)
COMMUNICATION
CIRCUIT
BLK
WHT
ACN1
(WHITE)
GRN
GRN
YLW/GRN
YLW/GRN
ACL1
(BLACK)
YELLOW (YEL)
RED
(RED)
BLUE
(BLU)
(TRADEMARK)
COMP. TERMINAL
THE PARENTHESIZED LETTERS IS
INDICATED ON THE TERMINAL COVER
REMARKS
BLU: BLUE
BRW: BROWN
ORG: ORANGE
BLK: BLACK
YLW: YELLOW
WHT: WHITE
GRY: GRAY
RED: RED
GRN: GREEN
YLW/GRN: YELLOW/GREEN
Resistance of Compressor Windings
MODEL CU-E18SD3UA
CONNECTION 5KD240XAF21
U-V 0.720
Ω
U-W 0.726
Ω
V-W 0.708
Ω
Note: Resistance at 68°F of ambient temperature.