49
10.2.3 CU-RZ50VKR CU-RZ60VKR CU-RZ71VKR
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)
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)
CN–STM
(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
1
6
ELECTRO-MAGNETIC COIL
(EXPANSION VALVE)
M
D502
1SS355
1SS355
1SS355
1SS355
D503
D504
D505
G1
G1
G1
G1
ZD502
30V
ZD501
30V
*R505
NONE
*R503
NONE
*D506
NONE
*D507
NONE
*C507
NONE
*C508
NONE
*C504
NONE
PC501
TLP421
(BL.J)
1
2
4
3
PC502
TLP421
(BL.J)
1
2
4
3
LF501
3
4
2
1
24V_1
24V_1
24V_1
D501
1A5
R506
2k
1W
DCH
C506
1000p
3k V
DCH
C505
1000p
3k V
DCH
C503
1000p
3k V
DCH
C501
1000p
3k V
R504
2k
1W
R507
10k
1/10 W
R508
10k
1/10 W
C5
1u
KB
10V
5V
G5
G5
R1
4.99k
1%
G10_1
24V
+
5V
5V
R12
15k
1%
R11
15.8k
1%
*R468
10k
*R467
10k
B1
C10
1u
10V
B1
C9
1u
10V
KY
C88
220u
10V
G5
G5
G5
5V
G5
C400
10u
25V
B3
C401
0.01u
50V
B1
G5
R600
1k
15V
*Q23
E
B
C
*D20
G2
AK
*IC4
13V
*C174
*D76
*D74
*D75
*D73
AK
AK
AK
AK
G2
G2
G2
G2
*IC5
ULN2003ADR
ULN2003ADR
16
15
14
13
12
11
10
1
2
3
4
5
6
7
1
2
3
4
5
6
7
16
15
14
13
12
11
10
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
CN-S
The unit tur n to the Rated Frequency Cooling Operation by short-cir cuiting 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)
2 5Vdc
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
/ 12Vdc
CN-PWR
Measure voltage
1-2 24Vdc
CN-DEMAND
Measure voltage
1-3 24Vdc
5V
G5
R14
10k
1
2
PFC CIRCUIT
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