Test Point Diagram; Outdoor Controller Board - Mitsubishi PUMY-P60NKMU Technical & Service Manual

8-9. TEST POINT DIAGRAM

Outdoor controller board

PUMY-P60NKMU
PUMY-P60NKMU-BS
SW2
SW8
Model select
Pump down
SW6
Function switch
SW5
Function switch
SW1
Display selection
(Self diagnosis)
SWU2, SWU1
Address setting
CN3N
Auto change over
63H
High pressure switch
CN3D
Input of demand control
TH2 Thermistor
<HIC pipe>
TH4 Thermistor
<Compressor>
TH3 Thermistor
<Outdoor pipe>
TH7/TH6 Thermistor
<Outdoor/Saturation tempera-
ture of suction pressure>
63LS
Low pressure sensor
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(-))
OCH502C
SW3 SW7
Test run Forced defrost
CNF1, 2
Connect to fan motors
1–4 : DC310V
5–4 : DC15V
6–4 : DC0–6.5V
7–4 : DC15V (when stopped)
DC0–15V pulse
(when operated)
89
<CAUTION> TEST POINT
CN51
SW4
External signal
Model select
output
V (TEST POINT1)
DC
(Voltage between pins of C510)
: DC310V
(Same as CNF1,2 1(+)–4(-))
is high voltage.
CN102
Connect to the M-P.B
(Transmission power 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 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
208/230VAC
SV1
Bypass valve
21S4
Four-way valve
V (TEST POINT2)
CC
(Voltage between pins of
C82A) : DC15V
(Same as CNF1,2 5(+)–4(-))
CNDC
DC280-380V (1(+)–3(-))