Mitsubishi Electric PUZ-ZM60VHA2, Service Manual

Page: 68 / 140

CNS
S1–S2: 230 V AC
CNAC
2
to
4
: Power supply for
outdoor control-
ler circuit board
(230 V AC)
1
to
3
: Power supply for
indoor and outdoor
unit connection
wire (230 V AC)
CN4
Transmission to out-
door power circuit
board (CN4)
CN51
External signal output
• Compressor operating signal
• Abnormal signal
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
: 16 V DC
7
–
5
: 16 V DC
SW1
Manual 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
SW7
Demand control setting
63H
High pressure switch
SW4
Test operation
SW6
Model select
SW5
Function switch
TH4
Thermistor <Discharge>
TH3
Thermistor
<Liquid>
TH7/6
Thermistor
<Ambient/
2-phase pipe>
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):
0 V DC (when stopped),
1– 6.5 V DC (when operated)
LEV-A,B
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)
TH33
Thermistor
<Comp. Surface>
Communication power supply
ZD71 Voltage
28 V DC
CNF1, CNF2
Connect to the fan motor
1
–
4
: 250–330 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)
CNDC
250–330 V DC
(
1
+,
3
−)
(Outdoor power circuit board
for ZM100–140V)
(Noise filter circuit board
for ZM100–140Y)
+ −
21S4
4-way valve
68
OCH771
<CAUTION> TEST POINT
1
is high voltage.
10-8. TEST POINT DIAGRAM
Outdoor controller circuit board