54
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
connection 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
Four-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
<Outdoor pipe>
TH7/6
Thermistor
<Outdoor/
2-phase pipe>
CNDC
Connect to the outdoor
noise filter circuit board
(CNDC)
+
−
V
FG
(TEST POINT
4
)
(Voltage between
right pins of PC5C
and PC5D, pin 3
and pin 4)
(Same as
(CNF1
7
(+)-
4
(-))
V
SP
(TEST POINT
3
)
(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 operating
signal
• Abnormal signal
LEV-A
Linear expansion
valve
SWP
Pump down
SW8
Wiring replace
CNM
Connect to A control
service tool
CNMNT
Connect to
M-NET adapter(CN5)
CNVMNT
Connect to
M-NET adapter(CND)
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
11-9. TEST POINT DIAGRAM
Outdoor controller circuit board
PUHZ-P200YHA PUHZ-P250YHA PUHZ-P200YHA3 PUHZ-P250YHA3
PUHZ-P200YHA3R1 PUHZ-P250YHA3R1 PUHZ-P200YHA3R2 PUHZ-P250YHA3R2
PUHZ-P200YHA3R3 PUHZ-P250YHA3R3
<CAUTION> TEST POINT
1
is high voltage.
OCH424E
