Panasonic CS-Z20TKR Service Manual page 38

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