Test Point Diagram Outdoor Controller Circuit Board - Mitsubishi Electric PUHZ-SW40VHA Service Manual

10-9. TEST POINT DIAGRAM
Outdoor controller circuit board
PUHZ-SW40VHA
PUHZ-SW50VHA
SW1
Forced defrost,
SW7
detect history record Demand control setting
reset, refrigerant
address
SW6
Model select
SW4
Test operation
SWP
Pump down
SW5
Function switch
Model select
SW8
Pipe replace
Wiring replace
CNM
Connect to A control
service tool
LEV-A,B
Linear expansion
valve
TH34
Thermistor
<Comp. surface>
63HS
High pressure
sensor
TH4
Thermistor
<Discharge>
TH3
Thermistor
<Liquid pipe>
TH7/6
Thermistor
<Ambient/
2-phase pipe>
63H
High pressure
switch
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), DC 1–
6.5V
CNF1
(when operated)
Connect to the fan motor
1-4: 250-330V DC
5-4: 15V DC
6-4: 0-6.5V DC
7-4: 15V DC(When stopped)
OCH525
PUHZ-SW40VHA-BS
PUHZ-SW50VHA-BS
CNDM
1 to 2: Input of low-level sound priority mode
1 to 3: Input of external contact point
7.5V DC(When operated)
(0V-15V pulse)
CNDC
250-330V DC
(1+, 3-)
(Outdoor power circuit
board for RP35-140V)
(Noise filter circuit board
for RP100-250Y)
39
<CAUTION> TEST POINT1 is high voltage.
CN51
External signal output
• Compressor operating signal
• Abnormal signal
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
2-5: Zero cross signal
3,4: Not used
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)
CNS
S1-S2: 230V AC
power circuit board
(0-5V DC)