Test Point Diagram Outdoor Controller Circuit Board - Mitsubishi Electric PUHZ-RP8YHA Technical & Service Manual

13-9. TEST POINT DIAGRAM
Outdoor controller circuit board
PUHZ-RP8YHA
PUHZ-RP10YHA
CNS
(Indoor/outdoor unit
connecting wire)
Communication
power supply
D71 Voltage
developed across:
16-30V DC
+
–
CNAC
2 to 4: Power supply for
outdoor controller
circuit board
(220V-240V AC)
1 to 3: Power supply for
indoor/outdoor unit con-
nection 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: Not used
6-5: 15V DC
7-5: 15V DC
[5: – 1,2,6,7: + ]
21S4
Four-way valve
SV2
Replace valve
CN4
Transmission
to outdoor
power circuit
board (CN4)
LED1, LED2
Operating inspection
indicators
CN332
Power supply for outdoor
FAN controller circuit
board (CN2)
1—2 : 18VDC
[2: – 1: + ]
SW10 CN31
Emergency
Model setup
operation
CNDM
1 to 2: Input of silent mode
1 to 3: Input of external
contact point
48
63H
High pressure switch
CNDC
310V~340V DC
+
}
Connect from
outdoor noise fil-
–
ter circuit board
(CNDC)
63L
Low pressure switch
CN331
Control signal for
outdoor FAN
controller circuit board
(CN6)
TH7
Thermistor<Outdoor>
TH6
Thermistor
<Outdoor 2-phase pipe>
TH3
Thermistor
<Outdoor pipe>
TH4
Thermistor
<Discharge>
LEV-A
Linear expansion
valve
CNVMNT
Connected to outdoor
M-NET board
CNM
A-control service
inspection kit
CNMNT
Connected to outdoor
M-NET board
SW5
Function switch
SW8
Model setup
Replacement operation
SW6
Model setup
SWP
Pump down
SW1
SW4
Forced defrost,
Test operation
detect history
record reset,
refrigerant address