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Error code
E0
Mode conflict
E1
Communication error between indoor and main outdoor unit
E2
T0 (Inlet air temperature sensor) malfunction
E3
T2 (Middle of evaporator sensor) malfunction
E4
T2B (Outlet of evaporator sensor) malfunction
E5
T2A (Inlet of evaporator sensor) malfunction
E6
DC fan motor error
E7
EEPROM failure
EC
TA (Outlet air temperature sensor) malfunction
To outdoor/
indoor/MS
units
comm. bus
NOTE:
Component in dash line is optional or field wiring
Typical wiring diagram. Refer to wiring diagram on the unit for actual wiring.
CN4
Setting Blower Operation
Blower cycling can be configured to determine indoor
operation.
•
Default operation is indoor unit blower OFF when the
indoor unit is in thermo OFF.
•
Settings can be adjusted in the -3P controller and
cannot be configured at the indoor unit PCB.
Error Content
Error code
U4
MS self-inspection error
F8
MS error
EEV malfunction
Eb
Ed
Outdoor unit fault
EE
High water alarm
FE
No address
Emergency stop
A0
Remote off
D8
To wired
controller
XT2
comm. bus
WHITE
To wired
BLUE
controller
RED
power
BLACK
YELLOW
GRAY
Vco2
CO2
sensor
COM
CN14
XS5
XP5
Display Board
RED
T2B
XS4
XP4
WHITE
GND
T1/T0
XS3
XP3
Vco2
B
A L
C
K
T2
XS2
XP2
L B
E U
T2A
XS1
XP1
L B
ACK
TA
EEV
CN2{L_IN}
CN4{N_IN}
L1 L2
XT1
POWER IN
Figure 24. Identify T0 Sensor on Wiring Diagram
White plug
Black wire
White wire
Figure 25. Typical Wiring Connections
Error Content
Code
FM
Indoor fan motor
T0
Inlet air temperature sensor
T2A
Inlet of evaporator sensor
T2B
Outlet of evaporator sensor
T2
Middle of evaporator sensor
TA
Outlet air temperature sensor
XP1-5 Connectors
ON/OFF
SWITCH
CN50
DC motor
CS
drive board
FAN CTON HTON 4
5
6
HHE interface
( Current range: 0-1A)
( Voltage range: 0-24V AC/DC)
" +5V GND +12V "
ONLY USED
FOR TESTING
CN12
CN11
CN5
CN52
CN54
Main Board
CN30
EARTH
CN3 CN18
CN20
N=4
ALARM
PUMP
18 AWG stranded shielded cable
Solder or connect with V0SNSR00P
•
Consult the specific controller manual for detailed
blower setting information.
NOTE - Ensure the blower is set to the ON position when
using an electrical duct heater.
20
Title
Title
Code
XS1-5
Connectors
XT1-2
Terminals
PUMP
Pump motor
CS
Water level switch
Warning lamp
ALARM
EEV
Electronic expansion valve
SVD Solenoid valve
NOTE:
1. Refer to manual for
communication wiring
2. Please use the 2-conductor
shielded twisted cable for
communication
CN13
FAN
FM
N=3
CN24
SVD
Black wire
Thermistor
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