Service Manual

67
OCH636B
Outdoor controller circuit board
PUZ-A24NHA7 PUZ-A30NHA7 PUZ-A36NKA7 PUZ-A42NKA7
PUZ-A24NHA7-BS PUZ-A30NHA7-BS PUZ-A36NKA7-BS PUZ-A42NKA7-BS
PUY-A24NHA7 PUY-A30NHA7 PUY-A36NKA7 PUY-A42NKA7
PUY-A24NHA7-BS PUY-A30NHA7-BS PUY-A36NKA7-BS PUY-A42NKA7-BS
SW4
Test operation
SW6
Model select
SW5
Function switch
Model select
SW1
Manual defrost, detect
history record reset,
refrigerant address
CN3S
Water heater
TH4
Thermistor
<Discharge>
TH3
Thermistor
<Liquid>
TH7/6
Thermistor
<Outdoor/Outdoor
2-phase pipe>
VFG
(Voltage between
right pins of PC5D,
pin 3 and pin 4)
(Same as
(CNF1
7(+)–4(−))
LEV-A,B
Linear expansion
valve
SWP
Pump down
CNM
Connect to A control
service tool
Communication power supply
DC Voltage
24 V DC
CNF1, CNF2 (CNF2: A36, 42 only)
Connect to the fan motor
1-4: 250–380 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)
+ –
CNS
S1-S2: 230 V AC
CNAC
2 to 4: Power supply for
outdoor controller circuit
board (230 V AC)
1 to 3: Power supply for
indoor and outdoor unit
connection wire
(230 V AC)
21S4
4-way valve
CN51
Water heater Comp protect
CNDM
1 to 2: Input of low-level
sound priority
mode
1 to 3: Input of external
contact point
SW7
Demand control setting
Model select
SV3
Solenoid valve
(+: D72 Cathode, –: CNS-A 2pin)
TH33
Thermistor
<Comp. surface>
63HS
High pressure
switch
CN4
Transmission to out-
door power circuit
board (CN4)
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: Not used
6–5: 15 V DC
7–5: 15 V DC
CNDC
250–380 V DC
(1+, 3
−)
Outdoor power
circuit board
TH32
Thermistor
<Suction>