55
11-9. TEST POINT DIAGRAM
Outdoor controller circuit board
PUHZ-P100VHA2.UK
PUHZ-P125VHA2.UK
PUHZ-P140VHA2.UK
PUHZ-P125VHA2
1
.UK
PUHZ-P140VHA2
1
.UK
Communication power supply
D71 Voltage
24V DC
CNS
S1-S2:A220-240V AC
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
(220-240V AC)
CNF1, CNF2
Connect to the fan motor
1
-
4
: 280V DC
5
-
4
: 15V DC
6
-
4
: 0-6.5V DC
7
-
4
: 15V DC(When stopped)
7.5V DC(When operated)(0V-15V pulse)
21S4
Four-way valve
63H
High pressure
switch
SV2
Bypass valve
(P125, P140 only)
CN4
Transmission to out-
door power circuit
board (CN4)
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>
TH7/6
Thermistor
<Outdoor/
2-phase pipe>
CNDC
280V DC
(
1
+,
3
-)
(Indoor power board)
+ -
V
FG
(Voltage between
right pins of PC5C
and PC5D, pin 3
and pin 4)
(Same as
(CNF1
7
(+)-
4
(-))
V
SP
(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
CN51
External signal output
• Compressor operating signal
• Abnormal signal
LEV-A
Linear expansion
valve
SWP
pump down
SW8
Pipe replace
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
1
-
5
: Reception from
power circuit board
2
-
5
: Zero cross signal
(0-5V DC)
3
,
4
: Not used
6
-
5
: 16V DC
7
-
5
: 16V DC
SV1/CH
Crankcase heater
(P125, P140 only)
OCH415A-2.qxp 08.2.21 8:15 AM Page 55
