Airwell YCV Series User manual

Service Manual
IMPORTANT NOTE:
Read this manual carefully before installing or operating your new air conditioning unit. Make sure to
save this manual for future reference.
20.AW.YCV.8-18kW.R410A.SM.EN.05.16.Rev01
Flow Logic (MINI) YCV Series
R410A
English Manual

2
CONTENTS
1. Features............................................................................................................ 1
2. Specification...................................................................................................... 3
3. Refrigerant Circuit ............................................................................................. 9
4. Dimension ....................................................................................................... 12
5. Wiring Diagram ............................................................................................... 14
6. Performance Curves ....................................................................................... 17
7. Operation Range............................................................................................. 19
8. Noise Level ..................................................................................................... 21
9. Outdoor Installation......................................................................................... 22
9.1 Safety ...........................................................................................................22
9.2 Installation instruction ...................................................................................24
10. Electric Installation ........................................................................................ 32
11. Trial Operation............................................................................................... 35
12. PCB Photo .................................................................................................... 37
13. Dip Switch Setting......................................................................................... 39
14. Digital Tube Display ...................................................................................... 41
15. Outdoor Unit Control ..................................................................................... 43
16. Failure Code ................................................................................................. 46
17. Troubleshooting ............................................................................................ 49

1
1. Features
DC Inverter Twin Rotary Compressor
1) Realize high efficiency and compact designed compressor
by joint wrap & earths metal magnet motor.
2) Wide range inverter compressors would satisfy the
customer's innovative requirement and design.
DC Inverter Motor
DC fan motor speed can be adjusted from 0~1000 r/min, it
can improve the unit efficiency, at the same time, the unit can
realize low ambient cooling operation.
High efficiency
Low vibration, low noise
High reliability
Precise Control
PID control adjusts the output of compressor and the open degree of EEV, balances the indoor refrigerant flow,
realizes the linear output, creates a comfortable environment. The temperature could be controlled precisely.
Imprecise common control
PID precise control
Refrigerant �ow speed Refrigerant �ow speed
P : Proportion adjustment
I : Integral adjustment
D :Differential adjustment
(PID control)
Conventional control
Time
Indoor temperature
Cooling
Temp
Setting
temp
Begin
Too cool
Constant
speed system
MR V inverter
system
Notcool
enough
Comfort
Cooling the room
quickly
Temp. di�erence
Cooling running
Timer
180° Vector Control Technology
Using power resistance to detect the rotor position of compressor, results in the consistency of the compressor
working current and current sine waves, improve power efficiency about 17%.
240 300 0
60 120 180
240 300
0
90-degree
120 18060

2
1
Parts Instroduction (AWAU-YCV150/180-H13)
1. Control the compressor running frequency by temp. Sensor, more precise and prompt than conventional
control system;
Protections: Pressure, temp., compressor, fan motor, refrigerant, oil quantity etc. Realize perfect performance;
Malfunction self-diagnose.
2. DC fan motor (AWAU-YCV150/180-H13).
3. DC inverter compressor, high efficiency.
4. Single set valve, easy to installation and save installation time.
2
3
4

3
2. Specication
Model AWAU-YCV080-H11 AWAU-YCV125-H11
Power supply Ph/V/Hz 1/220~230/50 1/220~230/50/60
Cooling
Rated capacity kW 8 12.5
Rated capacity kBtu/h 27.3 42.7
Rated power input kW 2.08 3.3
Max. power input kW 4 7.1
EER 3.85 3.79
Rated current A 10 15.9
Max. current A 19.2 34.1
Heating
Rated capacity kW 9.5 14.0
Rated capacity kBtu/h 32.4 47.8
Rated power input kW 2.1 3.4
Max. power input kW 3.84 6.9
COP 4.52 4.12
Rated current A 10.1 16.3
Max. current A 18.5 33.2
Compressor
Brand MITSUBISHI ELECTRIC MITSUBISHI ELECTRIC
Model TNB220FLHMC MNB42FFAMC-L
Type Rotary Rotary
Compressor quantity 1 INV 1 INV
Capacity W 7130 13780
Power input W 2200 4310
Rated current (RLA) A 9.7 15.8
Speed rps 60 60
Crankcase heater W 25 28
Refrigerant oil brand Itochu.,LTD.,Shanghai Itochu.,LTD.,Shanghai
Refrigerant oil type FV50S FV50S
Refrigerant oil charge ml 670 1400
Outdoor fan motor
Brand BROAD OCEAN BROAD OCEAN/NIDEC
Model Y6S643C831 ZWK511B51006
Voltage 220-230 310
IP class IP44 IP42
Type AC DC
Insulation class B E
Safe class I I
Power input W 192 225*2
Output W 100 180*2
Rated current A 0.88 0.6
Capacitor μF 5 /
Speed rpm 870 850
Outdoor fan
Brand SHUNWEI LANGDI
Model / /
Material Plastic Plastic
Type Axial Axial
Diameter mm 482 450
Height mm 150 150

4
Model AWAU-YCV080-H11 AWAU-YCV125-H11
Outdoor coil
Number of rows 2 2
Tube pitch (a)×row pitch (b) mm 21*18.186 21*18.186
Fin spacing mm 1.4 1.40
Fin type (code) Corrugated Corrugated
Fin coating type Optional Hydrophilic aluminum Hydrophilic aluminum
Salt spray test duration Hour 500 500
Tube outside dia. and type Internal thread copper tube Internal thread copper
tube
mm Ф7 Ф7
Coil length×height mm 955×792 970×1197
Number of circuits 6 7
Cabinet coating
Coating type Powder Coating Powder Coating
Salt spray test duration Hour 500 500
Sheet metal material Hot zinc plate Hot zinc plate
Sheet metal thickness mm 0.8 0.8
Control panel enclosure IP class Standard IP24 IP24
Outdoor air flow m3/h 3500 6500
Outdoor sound level (sound pressure level ) dB (A) 54 58
Outdoor sound level (sound power level ) dB (A) 65 69
Outdoor unit
Dimension (W*H*D) mm 960/340/830 960/340/1250
Packing (W*H*D) mm 1095×410×945 1095×410×1400
Net weight kg 70 99
Gross weight kg 76 107
Refrigerant Type R410A R410A
Charged volume kg 2.4 3.8
Throttle type EXV EXV
Design pressure MPa 4.15 4.15
Refrigerant piping
Liquid pipe mm 9.52 9.52
Gas pipe mm 15.88 19.05
Total pipe length m 100 150
Max. pipe length m 50 70
Max. Di󰀨. indoor/outdoor unit m30(Outdoor higher than indoor)
20(Indoor higher than outdoor)
Max. Di󰀨. indoor/indoor unit m 10 10
Connectable indoor unit ratio % 50%~130% 50%~130%
Maximum indoor units Piece 5 8
Connection wiring Power wiring mm26 16
Signal wiring mm2Shield wire:(0.75-2)*2 Shield wire:(0.75-2)*2
Operation range °C Cooling: 10~48
Heating: -15~21
Cooling: -5~48
Heating: -15~21
Nominal condition:
Indoor temperature (cooling): 27 DB(°C)/19 WB(°C), indoor temperature (heating): 20 DB(°C)/14.5 WB(°C).
Outdoor temperature (cooling): 35 DB(°C)/24 WB(°C), outdoor temperature (heating): 7 DB(°C)/6 WB(°C).
The data is measured with 7.5m equivalent pipe and 0m height di󰀨erence.
The noise level will be measured in the third octave band limited values in the semi-anechoic chamber, using a
real time analyser calibrated sound intensity meter. It is a sound pressure noise level.

5
Model AWAU-YCV150-H11
Power supply Ph/V/Hz 1/220~230/50/60
Cooling
Rated capacity kW 15
Rated capacity kBtu/h 51.2
Rated power input kW 3.98
Max. power input kW 7.1
EER 3.77
Rated current A 19.1
Max. current A 34.1
Heating
Rated capacity kW 17.0
Rated capacity kBtu/h 58.0
Rated power input kW 3.9
Max. power input kW 6.9
COP 4.35
Rated current A 18.8
Max. current A 33.2
Compressor
Brand MITSUBISHI ELECTRIC
Model MNB42FFAMC-L
Type Rotary
Compressor quantity 1 INV
Capacity W 13780
Power input W 4310
Rated current (RLA) A 15.8
Speed rps 60
Crankcase heater W 28
Refrigerant oil brand Itochu.,LTD.,Shanghai
Refrigerant oil type FV50S
Refrigerant oil charge ml 1400
Outdoor fan motor
Brand BROAD OCEAN/NIDEC
Model ZWK511B51006
Voltage 310
IP class IP42
Type DC
Insulation class E
Safe class I
Power input W 225*2
Output W 180*2
Rated current A 0.6
Capacitor μF /
Speed rpm 850
Outdoor fan
Brand LANGDI
Model /
Material Plastic
Type Axial
Diameter mm 450
Height mm 150

6
Model AWAU-YCV150-H11
Outdoor coil
Number of rows 2
Tube pitch (a)×row pitch (b) mm 21*18.186
Fin spacing mm 1.40
Fin type (code) Corrugated
Fin coating type Optional Hydrophilic aluminum
Salt spray test duration Hour 500
Tube outside dia. and type Internal thread copper tube
mm Ф7
Coil length×height mm 970×1197
Number of circuits 7
Cabinet coating
Coating type Powder Coating
Salt spray test duration Hour 500
Sheet metal material Hot zinc plate
Sheet metal thickness mm 0.8
Control panel enclosure IP class Standard IP24
Outdoor air flow m3/h 6500
Outdoor sound level (sound pressure level ) dB (A) 58
Outdoor sound level (sound power level ) dB (A) 69
Outdoor unit
Dimension (W*H*D) mm 960/340/1250
Packing (W*H*D) mm 1095×410×1400
Net weight kg 99
Gross weight kg 107
Refrigerant Type R410A
Charged volume kg 3.8
Throttle type EXV
Design pressure MPa 4.15
Refrigerant piping
Liquid pipe mm 9.52
Gas pipe mm 19.05
Total pipe length m 150
Max. pipe length m 70
Max. Di󰀨. indoor/outdoor unit m
Max. Di󰀨. indoor/indoor unit m 10
Connectable indoor unit ratio % 50%~130%
Maximum indoor units Piece 8
Connection wiring Power wiring mm216
Signal wiring mm2Shield wire:(0.75-2)*2
Operation range °C Cooling: -5~48
Heating: -15~21
Nominal condition:
Indoor temperature (cooling): 27 DB(°C)/19 WB(°C), indoor temperature (heating): 20 DB(°C)/14.5 WB(°C).
Outdoor temperature (cooling): 35 DB(°C)/24 WB(°C), outdoor temperature (heating): 7 DB(°C)/6 WB(°C).
The data is measured with 7.5m equivalent pipe and 0m height di󰀨erence.
The noise level will be measured in the third octave band limited values in the semi-anechoic chamber, using a
real time analyser calibrated sound intensity meter. It is a sound pressure noise level.

7
Model AWAU-YCV150-H13 AWAU-YCV180-H13
Power supply Ph/V/Hz 3/380~400/50/60 3/380~400/50/60
Cooling
Rated capacity kW 15 18
Rated capacity kBtu/h 51.2 61.4
Rated power input kW 3.98 5.19
Max. power input kW 7.1 7.3
EER 3.77 3.47
Rated current A 6.3 8.2
Max. current A 11.2 11.6
Heating
Rated capacity kW 17.0 20.0
Rated capacity kBtu/h 58.0 68.2
Rated power input kW 3.9 5.1
Max. power input kW 6.9 7.1
COP 4.35 3.90
Rated current A 6.2 8.1
Max. current A 10.9 11.2
Compressor
Brand MITSUBISHI ELECTRIC MITSUBISHI ELECTRIC
Model MNB42FFDMC-L MNB42FFDMC-L
Type Rotary Rotary
Compressor quantity 1 INV 1 INV
Capacity W 13780 13780
Power input W 4060 4060
Rated current (RLA) A 12.3 12.3
Speed rps 60 60
Crankcase heater W 28 28
Refrigerant oil brand Itochu.,LTD.,Shanghai Itochu.,LTD.,Shanghai
Refrigerant oil type FV50S FV50S
Refrigerant oil charge ml 1400 1400
Outdoor fan motor
Brand BROAD OCEAN/NIDEC BROAD OCEAN/NIDEC
Model ZWK511B51006 ZWK511B51006
Voltage 310 310
IP class IP44 IP44
Type DC DC
Insulation class E E
Safe class I I
Power input W 225*2 225*2
Output W 180*2 180*2
Rated current A 0.6 0.6
Capacitor μF / /
Speed rpm 850 850
Outdoor fan
Brand LANGDI LANGDI
Model / /
Material Plastic Plastic
Type Axial Axial
Diameter mm 450 450
Height mm 150 150

8
Model AWAU-YCV150-H13 AWAU-YCV180-H13
Outdoor coil
Number of rows 2 2
Tube pitch (a)×row pitch (b) mm 21*18.186 21*18.186
Fin spacing mm 1.40 1.40
Fin type (code) Corrugated Corrugated
Fin coating type Optional Hydrophilic aluminum Hydrophilic aluminum
Salt spray test duration Hour 500 500
Tube outside dia. and type Internal thread copper tube Internal thread copper tube
mm Ф7 Ф7
Coil length×height mm 970×1197 970×1197
Number of circuits 7 7
Cabinet coating
Coating type Powder Coating Powder Coating
Salt spray test duration Hour 500 500
Sheet metal material Hot zinc plate Hot zinc plate
Sheet metal thickness mm 0.8 0.8
Control panel enclosure IP class Standard IP24 IP24
Outdoor air flow m3/h 6500 6500
Outdoor sound level (sound pressure level ) dB (A) 58 59
Outdoor sound level (sound power level ) dB (A) 69 70
Outdoor unit
Dimension (W*H*D) mm 960/340/1250 960/340/1250
Packing (W*H*D) mm 1095×410×1400 1095×410×1400
Net weight kg 99 99
Gross weight kg 107 107
Refrigerant Type R410A R410A
Charged volume kg 3.8 3.8
Throttle type EXV EXV
Design pressure MPa 4.15 4.15
Refrigerant piping
Liquid pipe mm 9.52 9.52
Gas pipe mm 19.05 19.05
Total pipe length m 150 150
Max. pipe length m 70 70
Max. Di󰀨. indoor/outdoor unit m30(Outdoor higher than indoor)
20(Indoor higher than outdoor)
Max. Di󰀨. indoor/indoor unit m 10 10
Connectable indoor unit ratio % 50%~130% 50%~130%
Maximum indoor units Piece 8 9
Connection wiring Power wiring mm24 4
Signal wiring mm2Shield wire:(0.75-2)*2 Shield wire:(0.75-2)*2
Operation range °C Cooling: -5~48
Heating: -15~21
Cooling: -5~48
Heating: -15~21
Nominal condition:
Indoor temperature (cooling): 27 DB(°C)/19 WB(°C), indoor temperature (heating): 20 DB(°C)/14.5 WB(°C).
Outdoor temperature (cooling): 35 DB(°C)/24 WB(°C), outdoor temperature (heating): 7 DB(°C)/6 WB(°C).
The data is measured with 7.5m equivalent pipe and 0m height di󰀨erence.
The noise level will be measured in the third octave band limited values in the semi-anechoic chamber, using a
real time analyser calibrated sound intensity meter. It is a sound pressure noise level.

9
Te
Td
Inverter
compressor
d
s
c
e
4wv
Gas pipe
stop valve Condensor
HP Tc
Ts PMV
SV1
Liquidpipe
stopvalve
LP
Ta
Gas-liquid
separator
3. Refrigerant Circuit
AWAU-YCV080-H11

10
AWAU-YCV125-H11
AWAU-YCV150-H11
AWAU-YCV150/180-H13
Td
d
s
c
e
4wv
Ts PMV
SV2
SV1
Gas pipe
stop valve
Liquidpipe
stopvalve
HP LP
Inverter
compressor
Gas-liquid
separator
Condensor
Ta
Tc Te

11
Part name Model Sign Function Date
Compressor
AWAU-YCV080-H11
Capacity control, meet indoor load
request by adjusting the frequency
Motor resistance
(at 20°C): 0.88Ω
AWAU-YCV125-H11
AWAU-YCV150-H11
Motor resistance
(at 20°C): 0.29Ω
AWAU-YCV150-H13
AWAU-YCV180-H13
Motor resistance
(at 20°C): 0.53Ω
Pressure switch ALL
HP High pressure protection 4.15Mpa, OFF
LP Low pressure protection 0.05Mpa, OFF
Electronic expansion
valve ALL PMV In heating, refrigerant flow control ￠
2.4
Solenoid valve ALL
SV1 Keep balance of high/low pressure
when compressor starts up or stops
AC220V
SV2 Refrigerant jet protection when
discharging temp. is too high
4-way valve ALL 4WV Change over between cooling and
heating
AC220V, electried in heat;
not electried in cooling or
defrosting
Temp. sensor ALL
Te Check frost condition of outdoor
heat exchanger
R (25°C)=10K B
(25/50°C)=3700K
Ts Detect the suction temp. of
compressor
Tc
Check the temp. of main pipe of
condenser gas pipe control PMV in
heating
Ta
Detect ambient temp. set primary
setting for fan speed target
pressure and PMV open angle
Td Detect the discharging temp. of
compressor
R (80°C)=50K B
(25/80°C)=4450K
Heater
AWAU-YCV080-H11
HEATER Used to heat oil in compressor
25W, 220V
AWAU-YCV125-H11
AWAU-YCV150-H11
AWAU-YCV150-H13
AWAU-YCV180-H13
28W, 220V

12
4. Dimension
AWAU-YCV080-H11
960
830
580
184 184
340
380
67
21
Drain hole

13
AWAU-YCV125-H11
AWAU-YCV150-H11
AWAU-YCV150-H13
AWAU-YCV180-H13
960
1250
23
340
380
580
184 184 67
Drain hole
Fixinghole4-φ15

14
5. Wiring Diagram
AWAU-YCV080-H11
L N
PQ
Control
Board
Display
Board
P
ACL
ACL
ACN
HEATER
SV1
SV2
4WV
CA
ACFAN1
LED1-4
SW1-4
HPS
P
LPS TD TE (1) TC TS TA
ACN
BM1BM2
CN1
CN19
PTC
CN2 CN3 CN4CN5 CN6 CN7
LED4
LED3
LED1
LED2
PC
Symbol Signification
Live Wire
Neutral Wire
Compressor heater
Unloading valve
Injection valve
4 way valve
Motor capacitor
AC fan motor
Lights
Button
BM1,2
DIP switch
CN29 CN28
CN21
CN32 CN31
CN30
SW01
LD1 LD2 LD3
SW02
CN24
CN10
CN9
CN8
EEV
CN30
6.3A 250VAC
FUSE1
CN18
CN17
CN16
CN25
CN15
CN12
SW1SW3
SW4 SW2
HEATER
4WV
SV1
SV2
NO
12345678
NO
12345678
CA
M
【WARING】
【Symbol Signification】
【NOTES】
·Please check the power firstly before test , and make
sure the crankcase heater powering on for 12 hours
at least to protecting compressor.
·Forbid connecting the power wire to the “P” and “Q”,
otherwise the control board will be damaged.
HPS
TD
TE(1)
TS
TA
EEV
LD1-3
SW01,02
High pressure switch
LPS
Low pressure switch
Discharge temp. sensor
Defrost temp sensor
Suction temp. sensor
TC
Coil temp. sensor
Ambient temp. sensor
Electronic expansion valve
Digital display tubes
PC
Monitor
Tfin
IPM temperature sensor
BL
R
BL
CN20
CN11
～
CN14
ACFAN1
M
CN13
U
P
V
W
N
AC-N
AC-L
LI
LO
CN11
REACTOR
DC-
DC+
COMP
R
B
W
Tfin
CN19
CN1
P1 P2
E
P7
RL1 4
3
P4 P3 Noise Filter
R
B
W W
R
R
BL
BL
Please power off firstly for about 10
minutes before checking control box,
and make sure the voltage between
P and N below 20V.
[1] [2] [3] [4] [5] [6] [7] [8]
-0 0 0 0 0 0
0 0 0
YCV080 0 0 0 0 0
BM1
BM2
BM Cap. O:OFF
1:ON
-:FIELD
SET
【BM Indication】
1
R
·The switch BM1-1 is used for locking the indoor units
number, the initial situation is “ OFF”. After power on,
the display board will display 【U**】, “**” indicates
the number of indoor units that the outdoor unit can
communicate with. If it can match the actual number
of indoor units, please change “OFF” to “ON”, or else
fix the communication problem firstly.
Symbol Signification
B:Black
Y:Yellow
W:White
BL:Blue
Wire Colour:
ACFAN2
Def. Display Indication
U**
220
6.0P
7.0P
380
Indoor units
quantity
3.0P
**:NUM of the connected indoor units
Capability:YCV080
Capability:YCV125/150
Capability:YCV180
Outdoor
unit
capability
Power
type
Single phase power type
Three phase power type
Rotary switch

15
AWAU-YCV125-H11
AWAU-YCV150-H11
ACL-IN ACN-IN PE
ACL-OUT PE
ACN-OUT
L N
PQ
Control
Board
Display
Board
Noise Filter
P
ACL
HPS
P
LPS TD TE (1) TC TS TA
ACN
BM1BM2
CN1CN2 CN3 CN4CN5 CN6 CN7
LED4
LED3
LED1
LED2
PC
CN29 CN28
CN21
CN32 CN31
CN30
SW01
LD1 LD2 LD3
SW02
CN24
CN10
CN9
CN8
EEV
CN30
6.3A 250VAC
FUSE1
CN18
CN17
CN16
CN25
CN15
CN12
SW1SW3
SW4
DCFAN1
SW2
HEATER
4WV
SV1
SV2
NO
12345678
NO
12345678
M
R BL
R
BL
CN20
CN11
CN14
CN13
DCFAN2
DCP
U
V
W
DCN
DCL2 CN1
Tfin
CN11
COMP
R
R BL
R
B
B
W
W
W
ACN
ACL
DCL1
DC-
DC+
Reactor
M
M
ACL
ACN
HEATER
SV1
SV2
4WV
CA
DCFAN1
DCFAN2
LED1-4
SW1-4
Symbol
Signification
BM1,2
【WARING】
【NOTES】
·Please check the power firstly before test , and make
sure the crankcase heater powering on for 12 hours
at least to protecting compressor.
·Forbid connecting the power wire to the “P” and “Q”,
otherwise the control board will be damaged.
Def. Display Indication
U**
220
6.0P
7.0P
380
Indoor units
quantity
3.0P
**:NUM of the connected indoor units
Capability:YCV080
Capability:YCV125/150
Please power off firstly for about 10
minutes before checking control box,
and make sure the voltage between
P and N below 20V.
·The switch BM1-1 is used for locking the indoor units
number, the initial situation is “ OFF”. After power on,
the display board will display 【U**】, “**” indicates
the number of indoor units that the outdoor unit can
communicate with. If it can match the actual number
of indoor units, please change “OFF” to “ON”, or else
fix the communication problem firstly.
[1] [2] [3] [4] [5] [6] [7] [8]
-0 1 0 0 0 0
1 0 1
YCV125/150
01 1 0
YCV180
0 0 0 0
BM1
BM2
BM Capability.
【BM Indication】
1
B:Black
Y:Yellow
W:White
BL:Blue
Wire Colour:
O:OFF
1:ON
-:FIELD
SET
Capability:YCV180
Outdoor
unit
capability
Power
type
Single phase power type
Three phase power type
Live Wire
Neutral Wire
Compressor heater
Unloading valve
Injection valve
4 way valve
Motor capacitor
Upper fan motor
Lower fan motor
Lights
Button
DIP switch
【Symbol Signification】
HPS
TD
TE(1)
TS
TA
EEV
LD1-3
SW01,02
High pressure switch
LPS
Low pressure switch
Discharge temp. sensor
Defrost temp sensor
Suction temp. sensor
TC
Coil temp. sensor
Ambient temp. sensor
Electronic expansion valve
Digital display tubes
PC
Monitor
Tfin
IPM temperature sensor
Symbol Signification
Rotary switch

16
AWAU-YCV150-H13
AWAU-YCV180-H13
L1 L2 L3 N E
L1 L2 L3 N E
R S T N
PQ
Control
Board
Display
Board
Noise Filter
P
ACL
HPS
P
LPS TD TE (1) TC TS TA
ACN
BM1BM2
CN1CN2 CN3 CN4CN5 CN6 CN7
LED4
LED3
LED1
LED2
PC
CN29 CN28
CN21
CN32 CN31
CN30
SW01
LD1 LD2 LD3
SW02
CN24
CN10
CN9
CN8
EEV
CN30
6.3A 250VAC
FUSE1
CN18
CN17
CN16
CN25
CN15
CN12
SW1SW3
SW4
DCFAN1
SW2
HEATER
4WV
SV1
SV2
NO
12345678
NO
12345678
M
【BM Indication】
R W B BL
R
BL
CN20
CN11
CN14
CN13
DCFAN2
RDC-
P
L
S
T
U
V
W
Reactor
DC-
DC+
COMP
R
B W
CN1
CON6
CON5
CT
R
W
B
W
W
R
B
M
M
【WARING】
【NOTES】
·Please check the power firstly before test , and make
sure the crankcase heater powering on for 12 hours
at least to protecting compressor.
·Forbid connecting the power wire to the “P” and “Q”,
otherwise the control board will be damaged.
Please power off firstly for about 10
minutes before checking control box,
and make sure the voltage between
P and N below 20V.
·The switch BM1-1 is used for locking the indoor units
number, the initial situation is “ OFF”. After power on,
the display board will display 【U**】, “**” indicates
the number of indoor units that the outdoor unit can
communicate with. If it can match the actual number
of indoor units, please change “OFF” to “ON”, or else
fix the communication problem firstly.
B:Black
Y:Yellow
W:White
BL:Blue
Wire Colour:
[1] [2] [3] [4] [5] [6] [7] [8]
-0 1 0 0 0 0
1 0 1
01 1 0 1 0 0 0
BM1
BM2
BM Capability.
1
O:OFF
1:ON
-:FIELD
SET
Def. Display Indication
U**
220
6.0P
7.0P
380
Indoor units
quantity
3.0P
**:NUM of the connected indoor units
Capability:YCV080
Capability:YCV125/150
Capability:YCV180
Outdoor
unit
capability
Power
type
Single phase power type
Three phase power type
ACL
ACN
HEATER
SV1
SV2
4WV
CA
DCFAN1
DCFAN2
LED1-4
SW1-4
Symbol
Signification
BM1,2
Live Wire
Neutral Wire
Compressor heater
Unloading valve
Injection valve
4 way valve
Motor capacitor
Upper fan motor
Lower fan motor
Lights
Button
DIP switch
【Symbol Signification】
HPS
TD
TE(1)
TS
TA
EEV
LD1-3
SW01,02
High pressure switch
LPS
Low pressure switch
Discharge temp. sensor
Defrost temp sensor
Suction temp. sensor
TC
Coil temp. sensor
Ambient temp. sensor
Electronic expansion valve
Digital display tubes
PC
Monitor
Tfin
IPM temperature sensor
Symbol Signification
Rotary switch
YCV125/150
YCV180

17
6. Performance Curves
(1) Calculation method of refrigerating capacity---Refrigerating capacity to be known
=Refrigerating capacity×(A×B×C×D×E) W
unit

18
(2) Calculation method of heating capacity---Heating capacity to be known
= Heating capacity×(A×B×C×D×E×F) W
Outdoor modied capacity with a single indoor running = outdoor modied capacity *
(3) Calculation method of refrigerating capacity---Only one indoor unit running
(Outdoor modied capacity: heating or cooling capacity after modify item 1 and 2)