Mitsubishi Electric PUZ-SWM60VAA Service Manual page 44

9-6. TEST POINT DIAGRAM
Outdoor controller circuit board
SW7
SW9
Demand control setting
Function switch
SW1
Manual defrost, detect
history record reset,
refrigerant address
SW6
Model select
SW5
Function switch
SW8
Pipe replace
Wiring replace
CNM
Connect to A control
service tool
LEV-A,B,C
Linear expansion valve
LEV-C is PUZ-SHWM
only
63HS
Pressure sensor
TH4
Thermistor
<Discharge>
TH3
Thermistor
<Liquid>
TH7/6
Thermistor
<Ambient/
2-phase pipe>
TH32
Thermistor
<Suction>
TH33
Thermistor
<Comp. Surface>
V
FG
(Voltage between
right pins of PC5D,
pin 3 and pin 4)
(Same as
(CNF1 (+)– (−))
CNF1
V
Connect to the fan motor
SP
– : 280–380VDC
(Voltage between pins
– : 15 VDC
of C5B):
– : 0–6.5 VDC
0 VDC(when stopped),
– : 15 VDC (When stopped)
1–6.5 VDC
7.5 VDC (When operated)
(when operated)
(0–15 V pulse)
OCH809A
SWP
Pump down
SW4
Test operation
CNDC
280–380 VDC ( +,
(Outdoor power circuit board for S(H)WM60-140V)
(Noise filter circuit board for S(H)WM80-140Y)
<CAUTION> TEST POINT
CNDM
– :
Input of low-level sound priority mode
– :
Input of external contact point
−)
44
is high voltage.
CN51
External signal output
• Compressor operat-
ing signal
• Abnormal signal
21S4
4-way valve
SV1/SS
Drain hose heater output
CN4
Transmission to out-
door power circuit
board (CN4)
CN2
Connect to the outdoor power cir-
cuit board (CN2)
– : Reception from
power circuit board
– : Zero cross signal
(0–5 VDC)
– : Not used
(S(H)WM80-140Y)
15 VDC
(S(H)WM60-140V)
– : 15 VDC
– : 15 VDC
CNAC
– :
Power supply for outdoor
noise filter circuit board
(230 VAC)
– :
Power supply for indoor
and outdoor unit connection
wire (230 VAC)
63H
High pressure
switch
CNS
S1-S2: 230 VAC