Mitsubishi Electric PUMY-P112VKM3 Technical & Service Manual page 116

8-9. TEST POINT DIAGRAM
Outdoor multi controller circuit board
PUMY-P112VKM3(-BS)
PUMY-P112YKM3(-BS)
PUMY-P112YKME3(-BS)
SW2
SW8
Model selection Pump down
SW6
Function selection
SW5
Function selection
SW9
Function selection
SW1
Display selection
(Self diagnosis)
SWU2, SWU1
Address setting
CNLVB
Electronic expansion
valve
CNLVA
Electronic expansion
valve
CN3N
Auto change over
63H
High pressure switch
CN3D
Input of silent mode or
demand control
TH2 Thermistor
<HIC pipe>
TH4 Thermistor
<Compressor>
TH3 Thermistor
<Outdoor liquid pipe>
TH7/TH6 Thermistor
<Ambient/Suction pipe>
63HS
High pressure sensor
63LS
Low pressure sensor
V (TEST POINT4)
FG
(Voltage between pin3 and
pin4 of PC511 or PC512) :
(Correspond to CNF1,2
7(+)–4(−))
V CNF1, 2
SP
(Voltage between pins of Connect to fan motors
C515 and C516) : 1–4 : 310–340 V DC (Y)
0 V DC (when stopped)
1–6.5 V DC (when operated) 5–4 : 15 V DC
(Same as CNF1,2 6(+)–4(−)) 6–4 : 0–6.5 V DC
7–4 : 15 V DC (when stopped)
OCH632A
PUMY-P125VKM3(-BS)
PUMY-P125YKM3(-BS)
PUMY-P125YKME3(-BS)
SW3 SW7
Test run Manual defrost
V (TEST POINT1)
DC
(Voltage between pins of C510)
: 310–350 V DC (V)
(Same as CNF1,2 1(+)–4(−))
0–15 V DC pulse
(when operated)
<CAUTION> TEST POINT 1 is high voltage.
CN51
SW4
External signal
Model selection
output
CNDC
310–340 V DC (Y)
: 310–340 V DC (Y) 310–350 V DC (V)
: 310–350 V DC (V)
(1(+)–3(−))
116
PUMY-P140VKM3(-BS)
PUMY-P140YKM3(-BS)
PUMY-P140YKME3(-BS)
CN102
Connect to the M-NET
power circuit board
CN40,CN41
Centralized control power
supply/For storing
jumper connector selection
CNS2
Transmission wire of
centralized control
CNS1
Indoor/outdoor unit
connecting wire
CN2
Connect to the outdoor
power circuit board
1–5:
Power circuit board →
Transmitting signal to the outdoor
multi controller circuit board
(0–5 V DC)
2–5: Zero cross signal
(0–5 V DC)
3–4: Not used
6–5: 16 V DC
7–5: 16 V DC
CNAC
Power supply for outdoor
multi controller circuit board
230 V AC
SV1
Bypass valve
21S4
4-way valve
V (TEST POINT2)
CC
(Voltage between pins of
C82A) : 15 V DC
(Same as CNF1,2 5(+)–4(−))