55
10-9. TEST POINT DIAGRAM
Outdoor controller circuit board
PUHZ-P100VHA.UK PUHZ-P125VHA.UK
PUHZ-P140VHA.UK
Communication
power supply
ZD71 Voltage
developed across:
16-30V DC
–
+
CNS
(Indoor/outdoor unit
connecting wire)
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
(220V-240V 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
: 18V DC
6
-
5
: 16V DC
7
-
5
: 16V DC
[
5
: –
1
,
2
,
6
,
7
: + ]
21S4
Four-way
valve
63H
High pressure switch
SV2
Bypass valve
(P100 only)
CN4
Transmission
to outdoor
power circuit
board (CN4)
SW10
Model select
SW4
Test operation
SW6
Model select
SW5
Function switch
SW1
Forced defrost,
detect history
record reset,
refrigerant address
CNDM
1
to
2
: Input of silent mode
1
to
3
: Input of external
contact point
TH4
Thermistor
<Discharge>
TH3
Thermistor
<Outdoor pipe>
TH7
Thermistor<Outdoor>
TH6
Thermistor
<Outdoor 2-phase pipe>
CNDC
280V-380V DC
Connect from out-
door power circuit
board
–
+
}
V
CC
(TEST POINT
2
)
(voltage between pins of C6B): DC 15V
V
DC
(TEST POINT
1
)
(voltage between pins of C5E)
: 280V-380V DC
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)
<CAUTION> TEST POINT
1
is high voltage.
SW7
Demand control setting
SW9
CN51
External signal output
• Compressor operating signal
• Abnormal signal
LEV-A
Linear expansion valve
SWP
pump down
OC359A-2.qxp 06.7.12 3:07 PM Page 55