25
Figure 24. Typical Unit Wiring Diagram
CT1
CN4
CN3
RES
CN1
CN2
CN20
POWER SUPPLY
CH1
BLUE
CN26
CN6
CN5
P_1
L_1
L_2
N_1
VIN_N
BLACK
CN6
CN18
BLUE
BROWN
BLUE
CAP1
CAP2
CN24
XT2
BLUE
BLUE
RED
REC
L_OUT
N_OUT
L_IN
N_IN
CN11
Y/G
CN1
BOTTOM-FAN
TOP-FAN
CN3
RED
BLACK
RED
BLACK
CH9
CN17
CN19
BROWN
CH2
RED
BLACK
Forfactory use only
YELLOW
RED
208/230V 60Hz 1Ph
WHITE
Compressor
CT1
COMP
CAP1
CAP2
L_1
HEAT1
EEV
TOP-FAN
H-PR
L-PR
REC
Outdoor fan motor(DC)
Electronic expansion
Valve
RES
STF1
SV4-SV6
Resistor
XT1
、
XT2 Block terminal
Comp. Discharge
Temperature sensor
Code
Part Name
Magnetic ring
BOTTOM-FAN
H-YL
High pressure sensor
L_2
L0
L1
L2
L5
L9
L8
L4
L7
Low compressor speed
Compressor MCE error
E2
E4
E5
E6
EA
P2
P8
Fan output and feedback speed mismatch
P1
P3
P4
P5
Low-pressure switch trip
Hi-pressure switch trip
High compressor discharge temperature
2 times of E6 in 10 minutes
High condenser temperature
DC Fan error
E9
Eb
H0
PE
High indoor coil temperature
E7
E.9.
Communication error between compressor module
and main board
Communication error between indoor unit and
outdoor unit
F1
H4
3 times of L0 or L1 in 60 minutes
Compressor speed difference >15Hz between adjacent
2 second
mode(T3>75°F)
Compressor module error
Compressor power out of phase
Error Code For Outdoor Unit
SW3 Function Definition:
SW4 Function Definition:
(Factory use only)
ENC1 function definition:
ENC1
ENC2 function definition
ENC2
Outdoor unit network
address dial-up
Only 0-7 used
123
SW3
ON
Outdoor Ambient
Cooling Priority
Master Indoor Unit
Heating Only
Cooling Only
SW4-1
:
OFF-Manually addressing
SW4-2
:
ON-Clear indoor units
addresses
SW4-1
:
ON-Automatically addressing
PP
Compressor discharge temperature over-low protection
A0
Emergency Stop
SW4-3
:
OFF-Reserved
(Factory default)
TRANS
THANS OUT
TRANS IN
CN51
TR
TR
H-PR
L-PR
CN12
CN14
H-YL
CN8
T5
T3
T4
CN9
XS7 XP7
XS5 XP5
XS6 XP6
XS8 XP8
EEV.
CN22
Y/G
L1
L2
XT1
SV5
CN31
BLACK
SV4
CN21
BLACK
HEAT1
CN15
GRAY
STF1
CN13
BLUE
SV6
CN7
BLACK
HEAT3
CN10
RED
BLACK
BLUE
RED
COMP
Y/G
U
V
W
U V W
RED
BLACK
CH3
CH4
CH5
CH6
A1
A2
A3
Z
Z
1
2
3
4
5
T3 or T4 temperature sensor error
Compressor discharge temperature sensor error
EEPROM error
EEPROM not match main chip
Power voltage out of range
DC fan error more than 5 minutes in heating
Input current overload
YELLOW
Rectifier
Pfc inductor
Outdoor ambient
Temperature sensor
High pressure switch
Low pressure switch
Transformer
Condenser temperature
Sensor
Voltage dependent resistor
T5
T4
T3
123
SW4
ON
123
SW3
ON
123
SW4
ON
123
SW3
ON
123
SW4
ON
123
SW3
ON
123
SW4
ON
123
SW3
ON
123
SW3
ON
123
SW4
ON
123
SW3
ON
ON
3
2
1
ON
3
2
1
FORCE_COOL
CHECK
SW1
SW2
ENC1
ENC2
DIS1
SW4
SW3
4-way valve
Solenoid valve
Capacitor
SW4-2
:
OFF-Cannot clear indoor
units addresses
(Factory default)
(Factory default)
(Factory default)
Heating Priority
System Demand
Crankcase heater
MAIN BOARD
WIRING DIAGRAM(OUTDOOR UNIT)
COMPRESSOR MODULE
Ac curren sensor
CH1-CH9
HEAT3
The wiring diagram shown is for reference only,
actual product may vary.
CH8
CH7
YELLOW
YELLOW
YELLOW
H8
High pressure sensor error
DC bus voltage less than 200V for 5S
DC bus low voltage
DC bus high voltage
Compressor speed difference >15Hz between the
actual and the setting speed
P
N
CN10
CN8
CN9
K1 K2
O A
X Y
P Q
H1 H2
Signal wire terminal block
CN11
COMM. board
CN6
CN7
Reserved
To Pulse
Meter
Indoor Unit
Information
Circuit To
LVM, BAC-
net,or LON
system
System Commu-
nication Circuit
To Indoor Units
Reserved
L_1
L_2
N=1
N=1
N=1
Code
Part Name
BROWN
BLUE
Typical wiring diagram. Refer to wiring diagram on the unit for actual wiring.