Mitsubishi PUMY-P100YHM Technical & Service Manual page 61

9-9. TEST POINT DIAGRAM
Outdoor multi controller board
PUMY-P100YHM
PUMY-P125YHM
PUMY-P140YHM
SW2
Pump down
SW8
Demand/ Silent selection
SW1
Display selection
(Self diagnosis)
SWU2, SWU1
Address setting
63L
Low pressure switch
CN3N
Autochange over
(external signal input)
63H
High pressure switch
CN3D
Input of demand control
TH4 Thermistor
<Discharge>
TH3 Thermistor
<Outdoor pipe>
TH7/ 6 Thermistor
<Outdoor/ Saturation tem-
perature of suction pressure>
63HS
High pressure sensor
V (TEST POINT4)
FG
(Voltage between left pins of
PC511 and PC512, pin1 and
pin2) :
(Same as CNF1,2 7(+)–4(-))
V
SP
(Voltage between pins of
C515 and C516) :
DC0V (when stopped)
DC1–6.5V (when operated)
(Same as CNF1,2 6(+)–4(-))
PUMY-P100YHM
1
PUMY-P125YHM
1
PUMY-P140YHM
1
SW3 SW7
Test run Forced defrost
CNF1, 2
Connect to fan motors
1–4 : DC310V-340V
5–4 : DC15V
6–4 : DC0–6.5V
7–4 : DC15V (when stopped)
DC0–15V pulse
(when operated)
PUMY-P100YHMA
PUMY-P125YHMA
PUMY-P140YHMA
SW4
Model select
V (TEST POINT1)
DC
(Voltage between pins of
C510) : DC310V-DC340V
(Same as CNF1,2 1(+)–4(-))
61
PUMY-P100YHMA-BS
PUMY-P125YHMA-BS
PUMY-P140YHMA-BS
CN51 CN102
External signal Connect to the M-P.B
output (Transmission power board)
CN40,CN41
Centralized control power
supply/ For storing
jumper connector selection
CN52
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 multi controller board
(0-5V DC)
2-5: Zero cross signal
(0-5V DC)
3-4: Not used
6-5: 16V DC
7-5: 16V DC
CNAC
Power supply for multi
controller board
220-240VAC
SV1
Bypass valve
21S4
Four-way valve
V (TEST POINT2)
CC
(Voltage between pins of
C82A) : DC15V
(Same as CNF1,2 5(+)–4(-))
52C
52C relay signal
CNDC
DC310V–340V
(1(+)–3(-))