70
10-9. TEST POINT DIAGRAM
Outdoor controller circuit board
PUZ-A18/24/30/36/42NHA6 PUZ-A18/24/30/36/42NHA6-BS
PUY-A12/18/24/30/36/42NHA6 PUY-A12/18/24/30/36/42NHA6-BS
<CAUTION> TEST POINT
1
is high voltage.
Communication power supply
D71 Voltage
24 V DC
CNS
S1–S2: A 208/230 V AC
CNAC
2
–
4
:
Power supply for out-
door controller circuit
board (208–230 V AC)
1
–
3
:
Power supply for indoor
and outdoor unit con-
nection wire
(208/230 V AC)
CNF1, CNF2
Connect to the fan motor
1
–
4
: 280 V DC
5
–
4
: 15 V DC
6
–
4
: 0–6.5 V DC
7
–
4
: 15 V DC (When stopped)
7.5 V DC (When operated)
(0–15 V pulse) (CNF2 is only for A42)
21S4
4-way valve
(PUZ only)
63H
High pressure switch
SV2
Bypass valve
(A24/30/36 only)
CN4
Transmission to out-
door power circuit
board (CN4)
SW4
Test operation
SW6
Model select
SW5
Function switch
SW1
Manual defrost, detect history record reset, refrigerant address
CNDM
1
–
2
:
Input of low-level
sound priority mode
1
–
3
:
Input of external con-
tact point
TH3
Thermistor
<Liquid>
TH7/6
Thermistor
<Ambient/2-phase pipe>
CNDC
280 V DC (
1
+,
3
−)
(Outdoor power circuit
board)
+ −
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):
0 V DC (when stopped),
1
–
6.5 V DC
(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
–
5 V DC)
3
–
4
: 18 V DC
6
–
5
: 16 V DC
7
–
5
: 16 V DC
CN52C
(Connect to the noise
filter circuit board
(CN52C))
63L
Low pressure switch
TH32
Thermistor <Comp. surface>
TH33
Thermistor <Suction>
OCH577A