54
700
600
500
400
300
200
100
0
Resistance (k
Ω
)
Temperature (°F)
Discharge temperature thermistor (RT62)
32 50 68
86 104 122 140 158 176 194 212 230 248
-4
14
32
50
68
86
104
100
90
80
70
60
50
40
30
20
10
0
Resistance (k
Ω
)
Temperature (°F)
Defrost thermistor (RT61)
Ambient temperature thermistor (RT65)
Outdoor heat exchanger temperature
thermistor (RT68)
11-7. TEST POINT DIAGRAM AND VOLTAGE
1. Outdoor electronic control P.C. board
MXZ-2B20NA
LED 1
LED 2
Bus-bar
voltage
CN801
294 V DC
~
370 V DC
Input
(
(
(
LEV Room
A
(
12 V DC
pulse wave
(
LEV Room
B
(
12 V DC
pulse wave
CN932
20-90 V
AC
GND
5 V
5 V DC pulse wave
(
To
fan
motor
Defrost thermistor (R
T61)
Discharge temperature thermistor (R
T62)
Outdoor heat exchanger temperature thermistor (R
T68)
(
(
(+)
(–)
(+)
Rush current relay
(–)
(–)R.V
. coil
(
12 V DC
15 V
15 V
CN931
(+)
(–)
(
CN661
CN701 Signal transmission (T
o power board)
5 V DC pulse wave
(+)
(–)
(
GND
CN702 Signal reception (From power board) 5 V DC pulse wave
GND (power board)
CN781
LEV E
(
(+)
(–)
(
(+)
(–)
(
CN791
CN792
(
(
(
F801
FUSE
T3.15AL250V
LED 3
(
Ambient temperature thermistor (R
T65)
CN663
Serial signal Room B
12~24 V DC
Serial signal
Room A
12~24 V DC
CN602
CN601
208/230 V AC
Input
SW1
CN795 12 V DC pulse wave
DM06Y765
Содержание SEZ-KD NA.TH Series
Страница 12: ...12 WIRING DIAGRAM 6 MXZ 2B20NA MXZ 2B20NA 1 ...
Страница 13: ...13 MXZ 3B24NA MXZ 3B30NA MXZ 4B36NA ...
Страница 14: ...14 MXZ 3B24NA 1 MXZ 3B30NA 1 MXZ 4B36NA 1 ...