Test Point Diagram Outdoor Controller Circuit Board - Mitsubishi Electric PUHZ-RP250YHA2 Service Manual

10-9. TEST POINT DIAGRAM
Outdoor controller circuit board
PUHZ-RP200YHA2
SW7
Demand control setting
SW6
Model select
SW4
Test operation
SWP
Pump down
SW5
Function switch
SW8
Wiring replace
Pipe 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
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 )
(Voltage between
right pins of PC5C
and PC5D, pin 3
and pin 4)
(Same as
(CNF1 (+)- (-))
V
SP
(TEST POINT )
(Voltage between pins
of C5A, C5B): DC 0V
(when stopped), DC 1–
6.5V
CNF1, CNF2
(when operated)
Connect to the fan motor
- : 280V DC
- : 15V DC
- : 0-6.5V DC
- : 15V DC(When stopped)
7.5V DC(When operated)
(0V-15V pulse)
PUHZ-RP250YHA2
SW1
Forced defrost, detect history record reset,
refrigerant address
CNDC
Connect to the out-
door noise filter circuit
board(CNDC)
57
<CAUTION> TEST POINT
CN51
External signal output
• Compressor operating
signal
• Abnormal signal
CNDM
Input of low-level
sound priority mode
Input of external con-
tact point
CN4
Transmission to out-
door power circuit
board (CN4)
SV2
Bypass valve
21S4
4-way valve
63L
Low pressure switch
(RP250)
CN2
Connect to the outdoor
power circuit board (CN2)
- : Reception from
- : Zero cross signal
, : Not used
- : 16V DC
- : 16V DC
CNAC
to
outdoor controller circuit
board (220V-240V AC)
to
indoor and outdoor unit
connection wire
(220-240V AC)
CNS
S1-S2:220-240V AC
+ -
Communication power supply
D71 Voltage
24V DC
is high voltage.
to :
to :
power circuit board
(0-5V DC)
: Power supply for
: Power supply for