45
10-7. TEST POINT DIAGRAM
Outdoor controller circuit board
PUHZ-SW75VHA(-BS).UK
PUHZ-SW100VHA(-BS).UK
PUHZ-SW100YHA(-BS).UK
PUHZ-SW120VHA(-BS).UK
PUHZ-SW120YHA(-BS).UK
–
+
}
<CAUTION> TEST POINT
1
is high voltage.
SW4
Test operation
SW6
Model select
SW5
Function switch,
Model select
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 contact point
TH4
Thermistor <Discharge>
TH3
Thermistor
<Outdoor pipe>
TH6
Thermistor
<2-phase pipe>
TH7
Thermistor<Ambient>
V
DC
(TEST POINT
1
)
(voltage between pins of C5E)
: DC250V-380V
V
FG
(TEST POINT
4
)
(voltage between right
pins of PC5C and PC5D,
pin 3 and pin 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
SW9
Function switch
CN51
External signal output
• Compressor operating signal
• Abnormal signal
LEV-A,-B
Linear expansion valve
SWP
Pump down
CN52C
(Connect to the outdoor noise
filter circuit board (SW75V)/
the outdoor power circuit
board (SW100/120V))
Only for SW·VHA
CNS
(Indoor/outdoor unit
connecting wire)
CNAC
2
to
4
: Power supply
for outdoor controller
circuit board (230V AC)
1
to
3
: Power supply
for indoor and outdoor
unit connection wire
(230V AC)
CN2
Connect to the outdoor
power circuit board (CN2)
1
-
5
: Power circuit board
→
Transmitting signal to
the controller circuit board
(0-5V DC)
2
-
5
: Zero cross signal
(0-5V DC)
3
-
4
: Not used ...
(SW75V,100/120Y)
18V DC...(SW100/120V)
6
-
5
: 16V DC
7
-
5
: 16V DC
[
5
: –
1
,
2
,
6
,
7
: + ]
21S4
Four-way valve
63H
High pressure
switch
CN4
Transmission to out-
door power circuit
board (CN4)
CNDC
DC280V-380V Connect
from outdoor power circuit
board for VHA, connect
from noise filter board for
YHA
(CNDC)
V
CC
(TEST POINT
2
)
(voltage between pins of
C6B): DC 15V
63L
Low pressure switch
(SW100/120)
63HS
High pressure sensor
TH34
Thermistor
<Comp. surface>
OCH533A
