Test Point Diagram Outdoor Controller Circuit Board - Mitsubishi Electric PUHZ-P200YHA Service Manual

11-9. TEST POINT DIAGRAM
Outdoor controller circuit board
PUHZ-P200YHA
SW7
Demand control setting
SW6
Model select
SW4
Test operation
SWP
Pump down
SW5
Function switch
SW8
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
Linear expansion
valve
TH4
Thermistor
<Discharge>
TH3
Thermistor
<Outdoor pipe>
TH7/6
Thermistor
<Outdoor/
2-phase pipe>
63H
High pressure
switch
V
FG
(TEST POINT 4)
(Voltage between
right pins of PC5C
and PC5D, pin 3
and pin 4)
(Same as
7 4
(CNF1 (+)- (-))
V
SP
(TEST POINT 3)
(Voltage between pins
of C5A, C5B): DC 0V
(when stopped), DC 1–
6.5V
CNF1, CNF2
(when operated)
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)
PUHZ-P250YHA
SW1
Forced defrost, detect history record reset,
refrigerant address
CNDC
Connect to the outdoor
noise filter circuit board
(CNDC)
53
<CAUTION> TEST POINT1 is high voltage.
PUHZ-P200YHA3
+ −
Communication power supply
D71 Voltage
24V DC
PUHZ-P250YHA3
CN51
External signal output
• Compressor operating
signal
• Abnormal signal
CNDM
1 to 2:
Input of low-level
sound priority mode
1 to 3:
Input of external con-
tact point
CN4
Transmission to out-
door power circuit
board (CN4)
21S4
Four-way valve
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
6-5: 16V DC
7-5: 16V DC
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)
CNS
S1-S2:220-240V AC