Test Point Diagram Outdoor Controller Circuit Board - Mitsubishi Electric Mr.Slim PUHZ-SHW80VHA Service Manual

9-9. TEST POINT DIAGRAM
Outdoor controller circuit board
PUHZ-SHW80VHA
PUHZ-SHW112YHA
SW9
SW7
Function switch
Demand control setting
SW6
Model select
SW4
Test operation
SWP
Pump down
SW5
Function switch
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)
LEV-A,B,C
Linear expansion valve
63HS
Pressure sensor
63L
Low pressure switch
TH4
Thermistor
<Discharge>
TH3
Thermistor <Liquid>
TH7/6
Thermistor
<Ambient/
2-phase pipe>
TH32
Thermistor <Suction>
TH33
Thermistor
<Ref. check>
V
FG
(Voltage between
right pins of PC5C
and PC5D, pin 3
and pin 4)
(Same as
7 4
(CNF1 (+)- (-))
V
SP
(Voltage between pins
of C5A, C5B):
DC 0V(when stopped),
CNF1, CNF2
DC 1– 6.5V Connect to the fan motor
1-4: 280 - 380V DC
(when operated)
5-4: 15V DC
6-4: 0-6.5V DC
7-4: 15V DC(When stopped)
7.5V DC(When operated)
(0V-15V pulse)
OCH526
PUHZ-SHW112VHA
PUHZ-SHW140YHA
SW1
Manual defrost, detect
history record reset,
refrigerant address
CNDC
280V - 380 DC (1+, 3-)
(Outdoor power circuit
board for SHW80,112V)
(Noise filter circuit board
for SHW112,140Y)
<CAUTION> TEST POINT1 is high voltage.
CNDM
1 to 2:
Input of low-level sound priority
mode
1 to 3:
Input of external contact point
54
CN51
External signal output
• Compressor operat-
ing signal
• Abnormal signal
CN52C
Connect to the power
circuit board
(SHW80, 112V)
SV2
Bypass valve
SV1
Drain hose heater output
21S4
Four-way valve
CN4
Transmission to out-
door power circuit
board (CN4)
CN2
Connect to the outdoor
power circuit board (CN2)
1-5: Reception from
power circuit board
2-5: Zero cross signal
(0-5V DC)
3-4: Not used
(SHW112,140Y)
18V DC
(SHW80,112V)
6-5: 16V DC
7-5: 16V DC
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)
63H
High pressure
switch
CNS
S1-S2: 230V AC