Mitsubishi Electric PUZ-SM100VKA2 Service Manual page 57

9-8. TEST POINT DIAGRAM
Outdoor controller circuit board
PUZ-SM100VKA2.TH
PUZ-SM125VKA2.TH
PUZ-SM140VKA2.TH
SW1
Manual defrost,
detect history
SW7
record reset,
Demand control setting
refrigerant address
SW6
Model select
SW4
Test operation
SWP
Pump down
SW5
Function switch
SW8
Pipe replace
Wiring replace
CNM
Connect to A control
service tool
CNMNT
Connect to
M-NET adapter (CN5)
CNVMNT
Connect to
M-NET adapter (CND)
LEV-B
Linear expansion valve
LEV-A
Linear expansion valve
63H
High pressure switch
TH4
Thermistor
<Discharge>
TH3
Thermistor
<Liquid>
TH7/6
Thermistor
<Ambient/2-phase pipe>
TH33
Thermistor
<Comp. surface>
V
FG
(Voltage between right
pins of PC5C and
PC5D, pin 3 and pin 4)
(Same as (CNF1 (+)- (-))
V
SP
(Voltage between pins of C5A, C5B):
0 V DC (when stopped),
1– 6.5 V DC (when operated)
CNF1
Connect to the fan motor
- : 250-380 V DC
- : 15 V DC
- : 0-6.5 V DC
- : 15 V DC (When stopped)
7.5 V DC (When operated)
(0 V-15 V pulse)
OCH774A
PUZ-SM100YKA2.TH
PUZ-SM125YKA2.TH
PUZ-SM140YKA2.TH
CNDM
to : Input of low-level sound priority mode
to : Input of external contact point
CNDC
250-380 V DC
( +, -)
(Outdoor power circuit
board for SM·VKA2)
(Noise filter circuit board
for SM·YKA2)
57
CN51
External signal output
• Compressor operating signal
• Abnormal signal
CN4
Transmission to out-
door power circuit
board (CN4)
CN2
Connect to the outdoor
power circuit board (CN2)
- : Reception from
power circuit board
- : Zero cross signal
(0-5 V DC)
, : 18 V DC
- : 16 V DC
- : 16 V DC
CNAC
to : Power supply
for outdoor controller
circuit board (230 V AC)
to : Power supply for
indoor and outdoor unit
connection wire
(230 V AC)
CNS
S1-S2: 230 V AC
+ -
Communication power supply
ZD71 Voltage
(D72 and D75A)
28 V DC