18
Figure 24. Wiring Diagram - VMDB007-048-P3 Wiring Diagram
EXV
FM
ALARM
PUMP
CN18
CN3
CN24
CN2
EARTH
Y/G
CN15
CN9
CN17
Y/G
L1 L2
CN51
CN50
CN1
HHE interface
( Current range:
0-1A)
(Voltage range:
0-24V AC/DC)
FAN CTON HTON AUXH
T2A
T2B
T2
T1
XS5
XP5
Display Board
RED
BLUE
N=5
YELLOW
GRAY
WHITE
BLUE
ON/OFF
SWITCH
Occupancy
sensor
Main Board
CS
POWER IN
XT1
XT2
CN21
CN26
CN4
CN5
CN54
CN52
CN8
T2A
T2B
T2
EXV
Warning lamp
Electronic expansion valve
ALARM
Indoor fan motor
Room temperature sensor
T1
FM
Code
Title
XS1-7
XP1-7
XT1-2
Connectors
Terminals
Pump motor
Water level switch
Swing motors
PUMP
GM1-2
CS
Error Code
Error Content
E1
E0
E2
E3
E4
Mode conflict
Communication error between
indoor and main outdoor unit
E5
FE
D8
A0
Eb
U4
Ed
EE
F8
No address
Outdoor unit fault
Water level alarm
Emergency stop
Remote OFF
E6
DC fan motor error
E7
EEPROM failure error
“ +5V GND +12V ”
ONLY USED
FOR TESTING
CN30
RED
BLACK
HA
HB
12V
COM
Q
P
Magnet
Ring
To wired
controller
comm. bus
To outdoor/
indoor/MS
units
comm
.
bus
To wired
controller
power
MS error
CN14
GM1
GM2
XP6
XP4
XP3
XP2
XP1
BLUE
BLACK
WHITE
RED
XS4
XS3
XS2
XS1
XS6
XP7
XS7
CN12
NOTE:
1. Refer to manual for communication
wiring
2. Please use the 2-conductor shielded
twisted cable for communication
NOTE:
Component in dash line is
optional or field wiring
Inlet of evaporator sensor
Outlet of evaporator sensor
Middle of evaporator sensor
T1(Room temperature sensor) malfunction
T2(Middle of evaporator sensor) malfunction
T2A(Inlet of evaporator sensor) malfunction
T2B(Outlet of evaporator sensor) malfunction
MS self-inspection error
EXV malfunction
Typical wiring diagram. Refer to wiring diagram on the unit for actual wiring.
Summary of Contents for VRF VMDB Series
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