Mitsubishi Electric PUMY-P200YKM2 Technical & Service Manual page 104

8-9. TEST POINT DIAGRAM
Outdoor multi controller circuit board
PUMY-P200YKM2
PUMY-P200YKM2R1
SW2
SW8
Pump down
Model selection
SW6
Function selection
SW5
Function selection
SW9
Function selection
SW1
Display selection
(Self-diagnosis)
SWU2, SWU1
Address setting
CNLVB
Linear expansion
Valve
CNLVA
Linear 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
SP
(Voltage between pins of
C515 and C516) :
0 V DC (when stopped)
1–6.5 V DC (when operated)
(Same as CNF1,2 6(+)–4(−))
OCH675D
PUMY-P200YKM2-BS
PUMY-P200YKM2R1-BS
SW3 SW7
Test run Manual defrost
CNF1, 2
V
DC
(Voltage between pins of C510)
Connect to fan motors
1–4: 310–340 V DC
(Same as CNF1,2 1(+)–4(−))
5–4: 15 V DC
6–4: 0–6.5 V DC
7–4: 15 V DC (when stopped)
0–15 V DC pulse
(when operated)
<CAUTION> TEST POINT 1 is high voltage.
SW4
Model selection
(TEST POINT1)
CNDC
310–340 V DC
: 310–340 V DC
(1(+)–3(−))
104
CN51
External signal
output
CN102
Connect to the M-NET P.B
(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
CN4
Connect to the outdoor
power circuit board(CN4)
CN2
Connect to the outdoor
power circuit board
1–5: Power circuit board →
Transmitting signal to the out-
door multi controller circuit board
(0–5V 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
220–240 V AC
SS
Base heater
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(−))