31
8-7. TEST POINT DIAGRAM
Communication power supply
D71 Voltage
24V DC
CNS
S1-S2: 220-240V AC
CNAC
2
to
4
:
Power supply for outdoor
controller circuit board
(220V-240V AC)
1
to
3
:
Power supply for indoor
and outdoor unit connec-
tion wire
(220-240V AC)
CNF1, CNF2
Connect to the fan motor
1
-
4
: 250-330V DC
5
-
4
: 15V DC
6
-
4
: 0-6.5V DC
7
-
4
: 15V DC(When stopped)
7.5V DC(When operated)
(0V-15V pulse)
21S4
4-way valve
63H
High pressure
switch
CN4
Transmission to out-
door power circuit
board (CN4)
SW4
Test operation
SW6
Model select
SW5
Function switch
SW1
Forced defrost, detect history record reset,
refrigerant address
CNDM
1
to
2
:
Input of low-level
sound priority mode
1
to
3
:
Input of external con-
tact point
TH4
Thermistor
<Discharge>
TH3
Thermistor
<Liquid pipe>
TH7/6
Thermistor
<Outdoor/
2-phase pipe>
CNDC
280V DC (
1
+,
3
-)
(Noise filter circuit board)
+ -
V
FG
(Voltage between
right pins of PC5C
and PC5D, pin 3
and pin 4)
(Same as
(CNF1
7
(+)-
4
(-))
V
SP
(Voltage between pins
of C5A, C5B):
DC 0V(when stopped),
DC 1– 6.5V
(when operated)
SW7
Demand control setting
CN51
External signal output
• Compressor operat-
ing signal
• Abnormal signal
LEV-A,B,C
Linear expansion
valve
SWP
Pump down
SW8
Pipe replace
Wiring replace
CNM
Connect to A control
service tool
CN2
Connect to the outdoor
power circuit board (CN2)
1
-
5
: Reception from
power circuit board
2
-
5
: Zero cross signal
(0-5V
DC)
3
-
4
: Not used
6
-
5
: 16V DC
7
-
5
: 16V DC
Outdoor controller circuit board
PUHZ-HRP200YKA
TH32
Thermistor
<Suction pipe>
63L
Low pressure
switch
Pressure sensor
(63HS)
SW9
Function switch
SV1
Drain hose heater
output
