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10-6. TEST POINT DIAGRAM
Outdoor controller circuit board
<CAUTION> TEST POINT1 is high voltage.
CNS
(Indoor/outdoor unit
connecting wire)
63H
High pressure switch
V
(TEST POINT 2)
CC
(voltage between pins of
C821): 15 VDC
CNAC
2–4: Power supply for
outdoor controller
circuit board (230
VAC)
1–3: Power supply
for indoor and
outdoor unit con-
nection wire (230
VAC)
CN2
Connect to the outdoor
power circuit board (CN2)
1–5: Power circuit board →
Transmitting signal to the
controller circuit board
(0–5 VDC)
2–5: Zero cross signal
(0-5VDC)
3–4: Not used.
(SW75V,100/120Y)
18 VDC (SW100/120V)
6–5: 16 VDC
7–5: 16 VDC
[5: – 1,2,6,7: + ]
21S4
4-way valve
CN4
Transmission to out-
door power circuit
board (CN4)
CN52C
(Connect to the outdoor noise
filter circuit board (SW75V)/
the outdoor power circuit
board (SW100/120V))
Only for SW·VHA
OCH755
CNDC
280–380 VDC Connect from outdoor
power circuit board for VHA, connect
from noise filter board for YHA
+
–
SW9
Function switch
CNDM
1–2: Input of low-level sound priority mode
1–3: Input of external contact point
42
V
(TEST POINT 1)
DC
(CNDC)
(voltage between pins of C5E)
: 250–380 VDC
V
(TEST POINT 3)
SP
(voltage between pins of
C5A, C5B): 0 VDC (when
stopped), 1–6.5 VDC
(when operated)
V
(TEST POINT 4)
FG
(voltage between right
pins of PC5C and PC5D,
pin 3 and pin 4)
TH6
Thermistor
<2-phase pipe>
TH7
Thermistor<Ambient>
TH3
Thermistor
<Liquid>
TH4
Thermistor <Discharge>
63L
Low pressure switch
(SW100/120)
63HS
High pressure sensor
TH34
Thermistor
<Comp. surface>
LEV-A,-B
Linear expansion valve
SW4
Test operation
SW5
Function switch,
Model select
SW6
Model select
SW1
Manual defrost, detect
history record reset,
refrigerant address
SWP
SW7
Demand control setting
Pump down
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