38
10.2.2 CU-Z42TKR CU-Z50TKR CU-Z60TKR CU-Z71TKR
t°
t°
t°
TO INDOOR UNIT
SINGLE PHASE POWER SUPPLY
REACTOR
BLK
BLK
WHT
WHT
YLW/GRN
GROUNDING TERMINAL
RED
COMMUNICATION
CIRCUIT
NOISE FILTER
CIRCUIT
DATA
(RED)
AC-BLK
(BLK)
AC-WHT
(WHT)
FG1
(GRN)
FG2
(GRN)
PFC CIRCUIT
RECTIFICATION
CIRCUIT
RECTIFICATION
CIRCUIT
SWITCHING POWER
SUPPLY CIRCUIT
FUSE 103
(25A 250V)
FUSE 104
T3.15A L250V
FUSE 101
T3.15A L250V
FUSE 2
20A
FUSE 3
20A
GRN
GRN
123
TERMINAL
BOARD
LN
CN–TH1
(WHT)
CN–TANK
(WHT)
RED
RED
BLU
BLU
BLK
PNK
WHT
YLW
YLW
U (RED)
V (BLU)
W (YLW)
U
V
W
1
4
1
3
P
N
Q1
OUTDOOR AIR TEMP. SENSOR (THERMISTOR)
PIPING TEMP. SENSOR (THERMISTOR)
COMPRESSOR TEMP. SENSOR (THERMISTOR)
CN–HOT
(WHT)
1
3
ELECTRO-MAGNETIC COIL
(4-WAY VALVE)
COMPRESSOR
MS
3~
ELECTRONIC CONTROLLER (MAIN)
1
1
3
5
3
W
10
14
16
IC25
V
U
CN-MTR2
(WHT)
CN-MTR1
(RED)
RAT2
(GRY)
GRY
RAT1
(GRY)
GRY
ELECTRONIC CONTROLLER
CN-OPT
(WHT)
1
BLK
GRN
(GRN)
AC_GND
NOISE FILTER
CIRCUIT
CN-V1
(WHT)
CN-PWR
(WHT)
CN-DEMAND
(WHT)
CN-DEMAND
(WHT)
2
2
1
1
1
1
3
3
RED
BLK
WHT
WHT
WHT
YLW
ORG
RED
BRW
DRM
C
3
2
1
TERMINAL
BOARD
SOUND PROOF BOARD
TO DRED
4
7
MS
3~
FAN MOTOR
D20
1A5
G2
15V
e
c
Sensor (Thermistor)
Characteristics
70
60
50
40
30
20
10
0
-10 0 10
Temperature (
o
C)
Resistance (kΩ)
20 30 40 50
1
2
1
2
Outdoor Air Sensor
Outdoor Heat Exchanger
Sensor
Compressor Temp. Sensor
(Thermistor) Characteristics
70
60
50
40
30
20
10
0
20 40 60
Temperature (
o
C)
Resistance (kΩ)
80 100 120 140
5V
R14
10k
G2
1
2
CN-S
The unit turn to the Rated Frequency Cooling Operation by short-circuiting CN-S after applying power between the terminal 1 and 2.
Operation of the compressor and the outdoor fan motor can be checked by applying power after short-circuiting CN-S.
DC FM
CN-MTR1
1 Feedback output (0 - 5Vdc pulse)
25Vdc
3GND
CN-MTR2 (Measure winding resistance / voltage)
1W
3U
5V
~80 ohm / 15Vdc
~80 ohm / 15Vdc
~80 ohm / 15Vdc
CN-TH1 (Measure resistance)
1-2 Outdoor air intake sensor (15KΩ ±5% at 25°C)
3-4 Pipe temp sensor (4.96KΩ ±5% at 25°C)
CN-TANK (Measure resistance)
1-3 Comp temp sensor (50KΩ ±5% at 25°C)
CN-HOT
Measure resistance of v-coil CN-HOT
1-3 23Ω at 20°C
Measure voltage on PCB
during 4-way valve ON 1.8Vdc - 15Vdc
OFF -
CN-STM (Measure resistance / voltage)
1-6 46Ω / 13Vdc
CN-PWR
Measure voltage
1-2 24Vdc
CN-DEMAND
Measure voltage
1-3 24Vdc
G1
ZD501
R506
2k
R505
NONE
G1
ZD502
R504
2k
R503
NONE
R507
10k
D502
D503
D504
D505
G1
D506
NONE
C507
NONE
PC501
1
2
4
3
24V_1
PC502
24V_1
R508
10k
D507
NONE
C508
NONE
1
2
4
3
13V
C174
G2
G2
D76
D75
D73
D74
AK
AK
AK
AK
5V
G5
C5
1u
KB
10V
R1
4.99k
1%
24V
G10_1
5V
G5
G5
R11
15.8k
1%
B1
C9
1u
10V
KY
C88
220u
10V
R12
15k
1%
B1
C10
1u
10V
5V
R468
10k
R467
10k
5V
C400
10u
25V
B3
G5
G5
C401
0.01u
50V
B1
R600
1k
G5
CN-STM
(WHT)
1
6
ELECTRO-MAGNETIC COIL
(EXPANSION VALVE)
M
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