Midea MDV-120W/DGN1, Technical & Service Manual

Page: 18 / 84

MCAC-VTSM-2016 02
-
R410A All DC Inverter Mini VRF
5. Wiring diagrams
15
Specifications & Performances
U
V
W
CAP1
R2
HEA
T1
STF1
SV5
BLUE
Y/G
Y/G
CN65 CN64 CN67 CN66 CN68
SV6
CN17
IC201
CN205
CN19
CN41
CN1
1
CN6 CN8 CN9
CN10
CN22
CN201
A2
A1
ORANGE
5
4
1
2 3
D1
R1
CAP2
FAN-DOWN
Y/G
FAN-UP
Y/G
BLUE
BROWN
GND_2
CN30 CN31 CN32
L1
’
L2
’
L3
’
CN19(CN18)
CN18(CN19)
GND_1
POWER
&
FIL
TER
BOARD
MAIN
BOARD
U
V
W
CN2
CN1
P
N(N_1)
CN5
IPM
MODULE
BLUE
WHITE(BROWN)
RED
RED(BROWN)
RED
Y/G
BLACK
ZR1
RED
RED
RED
BLACK
BLACK
RED
BLACK
BLUE
BLUE
BLACK
BLACK
RED
BLUE
ORANGE
RED
L
IC201
CN250
BLACK
RED
BLUE(BROWN)
BLUE
RED
Specific
fault
code
for
P6
L0 L1 L2 L5
L9 L8
Display
Malfunction
or
Protection
L4
L7
DC
generatrix
low
voltage
protection
Module
protection
DC
generatrix
high
voltage
protection
Phase
sequence
protection
Zero
speed
protection
MCE
malfunction
Speed
dif
ference
>15Hz
protection
between
the
front
and
the
back
clock
Speed
dif
ference
>15Hz
protection
between
the
real
and
the
setting
speed
T4
T5
H-PRO
CN39
N
EEV
.
CN39
POWER
SUPPL
Y
BLACK
XT1
CT1
4
COMPRESSOR
CT1
COMP
.
CAP1,CAP2
CAP
ACIT
OR
PTC1,PTC2
L
HEA
T1
EEV
.
F
AN-UP
,F
AN-DOWN
KM1
H-PRO L-PRO
HIGH
PRESSURE
SWITCH
LOW
PRESSURE
SWITCH
AC
CONT
ACT
OR
THERMAL
RESIST
OR
INDUCT
OR
RECTIFIER
D1
OUTDOOR
F
AN
MOT
OR
CRANKCASE
HEA
TER
ELECTRIC
EXP
ANSIVE
V
AL
VE
R1,R2
STF1
T3 T5
T4
SV5,SV6
PIPE
SENSOR
TEMPERA
TURE
OUTDOOR
SENSOR
TEMPERA
TURE
RESIST
ANCE
XT1 XT2
5-W
A
Y
TERMINAL
6-W
A
Y
TERMINAL
COMPRESSOR
DISCHARGE
TEMPERA
TURE
SENSOR
4
-W
AY
VA
LV
E
AC
CURRENT
SENSOR
CODE
P
AR
T
NAME
IC201
DC
SENS
CURRENT
OR
ZR1
V
oltage
Dependent
Resistor
Malfunction
Code
For
Outdoor
Unit
E2 E4 E5 E6
EA P2 P8
T
yphoon
protection
P1 P3 P4 P5
Low-pressure
protection
Hi-pressure
protection
Compress
or
discharge
protection
temperature
2
times
of
E6
protection
in
10
minutes
Display
Communication
malfunction
between
indoor/outdoor
units
T3
&T4
temperature
sensor
malfunction
Power
voltage
protection
Input
current
protection
Condenser
high
temperature
protection
Malfunction
or
Protection
EEPROM
malfunction
Fan
Protection
A
fan
in
the
A
region
run
for
more
than
5
minutes
in
Heat
mode
E9
Eb H4
Communication
malfunction
betweem
IR341/main
board
PE
Indoor
evaporator
hi-temp
protection
E7
Compressor
discharge
temperature
sensor
malfunction
E.9. F1
The
bus
voltage
is
less
than
200V
for
5S
Compressor
signal
error
BLUE(RED)
RED
RED(BLUE)
RED
PTC1
PTC2
RED
QUER
Y
INSTRUCTIONS
(SW2)
The
capacity
requirements
of
the
revised
external
unit
Operating
fan
speed
grade
Operating
mode
T4
environmert
temperature
T5
discharge
temperature
Normal
display
The
total
capacity
requirements
of
the
interior
unit
T3
piping
temperature
Opening
degree
of
PMV
DC
generatrix
voltage
0
13
14 15
The
quantities
of
the
operating
interior
units
T
otal
quantities
of
the
interior
units
19
The
last
fault
or
protection
code
T2/T2B
average
temperature
16
Model
18
Display
"--"
17
12
Display
content
The
surface
temperature
Of
the
cooling
fin
Display
content
NO
.
Actual
current
value
Priority
mode
V
ersion
of
the
program
Display
content
NO
.
NO
.
SW1
SW2
*Note:
1
Force
cooling
function
SW1
button
on
PCB
is
force
cooling
button.
Press
once
to
enter
into
force
cooling
function;
Press
twice
force
cooling
function
will
be
exit.
2
SW1
Check
function
SW2
button
on
PCB
is
check
button.
LED
will
display
the
parameters
sequently
.
SW2
SW1
SW2
PL
Radiator
temperature
protection
(Reserved)
T3
SOLENOILD
V
AL
VE
1
2
ON
1
2
ON
1
2
ON
1
2
ON
SW6
140
TYPE
Factory Setting Factory Setting
120
160
180
According
to
related
model
According
to
related
model
For
Setting
POWER
For
Setting
POWER
SW7_1 TYPE
Factory Setting Factory Setting
Obtain
net
address
automatically
Obtain
net
address
manually
1
2
ON
1
2
ON
Undefined
SW7_2 TYPE
Factory Setting Factory Setting
1
2
ON
1
2
ON
Clear
indoor
unit
net
address
1
2
3
ON
TYPE
Factory Setting Factory Setting
SW8
Undefined
1
2
3
ON
1
2
ON
1
2
ON
SW6
SW7
SW8
BLUE
ORANGE
BLUE
L-PRO
CN36CN36
L1
CN37
L2
CN38
L3
CN36CN36 CN37 CN38
BLUE
RED
CN36
NO
S T R
KM2
COM
BLUE
WHITE
RED
TO
INDOOR
COMM.
BUS
TO
CCM.
COMM.
BUS
XT2
Y/G
KM2
3-PHASE
SEQUENCE
VOL
T
AGE
PROTECTION
RELA
Y
H0
3
times
of
L0
or
L1
protection
in
60
minutes