Argo X3I ECO PLUS LCLH User manual

SERVICE MANUAL
Please read this manual carefully before installing and using the air conditioner, and
retain for future refe rence.
X3I ECO PLUS LCLH
MONO SPLIT
AIR CONDITIONERS – R32
INDOOR UNITS OUTDOOR UNITS
X3I ECO PLUS 27 HL WF LH X3I ECO PLUS 27 SH LH
X3I ECO PLUS 35 HL WF LH X3I ECO PLUS 35 SH LH
X3I ECO PLUS 52 HL WF LH X3I ECO PLUS 52 SH LH
X3I ECO PLUS 70 HL WF LH X3I ECO PLUS 70 SH LH
V 09/22

Service Manual
Table of Contents
Table of Contents
Part Ⅰ : Technical Information .................................. 1
1. Summary ......................................................................... 1
2. Specifications ............................................................... 2
2.1 Specification Sheet.................................................................................................2
2.2 Capacity Variation Ratio According to Temperature ..................................6
2.3 Cooling and Heating Data Sheet in Rated Frequency................................8
3.
Outline Dimension Diagram ................................... 9
3.1 Indoor Unit ................................................................................................................9
3.2 Outdoor Unit............................................................................................................10
4.
Refrigerant System Diagram ............................... 12
5.
Electrical Part ............................................................. 13
5.1 Wiring Diagram ......................................................................................................13
5.2 PCB Printed Diagram...........................................................................................16
6.
Function and Control ............................................... 21
6.1 Remote Controller Introduction .......................................................................21
6.2 Brief Description of Models and Functions.................................................26
6.3 Ewpe Smart App Operation Manual................................................................35
Part Ⅱ : Installation and Maintenance ............... 36
7.
Notes for Installation and Maintenance .......... 36
8. Installation .................................................................. 41
8.1 Installation Dimension Diagram...................................................................... 41
8.2 Installation Parts-checking ..............................................................................43
8.3 Selection of Installation Location...................................................................43
8.4 Electric Connection Requirement ..................................................................43

Service Manual
Table of Contents
8.5 Installation of Indoor Unit..................................................................................44
8.6 Installation of Outdoor unit...............................................................................46
8.7 Vacuum Pumping and Leak Detection..........................................................47
8.8 Check after Installation and Test operation................................................48
9. Maintenance ............................................................... 49
9.1 Error Code List......................................................................................................49
9.2 Procedure of Troubleshooting ........................................................................54
9.3 Troubleshooting for Normal Malfunction ....................................................68
10. Removal Procedure ............................................... 70
10.1 Removal Procedure of Indoor Unit ..............................................................70
10.2 Removal Procedure of Outdoor Unit...........................................................75
Appendix .......................................................................... 94
Appendix 1: Reference Sheet of Celsius and Fahrenheit.............................94
Appendix 2: Configuration of Connection Pipe ...............................................94
Appendix 3: Pipe Expanding Method...................................................................95
Appendix 4: List of Resistance for Temperature Sensor..............................96

1
Technical Information
Service Manual
1. Summary
Indoor Unit:
Outdoor Unit:
X3I ECO PLUS 27 SH LH X3I ECO PLUS 35 SH LH
X3I ECO PLUS 52 SH LH X3I ECO PLUS 71 SH LH

2
Outdoor
Unit
Outdoor Unit Model X3I ECO PLUS 27 SH LH
Outdoor Unit Product Code
Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO.,LTD
Compressor Model QXF-A082zC170
Compressor Oil ZE-G;ES RB68GX or equivalent
Compressor Type Rotary
Compressor LRA. A 15.00
Compressor RLA A 2.56
Compressor Power Input W 756.6
Compressor Overload Protector /
Throttling Method Capillary
Set Temperature Range ºC 16~30
Cooling Operation Ambient Temperature Range ºC -15~50
Heating Operation Ambient Temperature Range ºC -25~30
Condenser Form Aluminum Fin-copper Tube
Condenser Pipe Diameter mm Φ7
Condenser Rows-n Gap mm 1-1.2
Condenser Coil Length (LXDXW) mm 666X19.05X527
Fan Motor Speed rpm 900
Fan Motor Power Output W 30
Fan Motor RLA A 0.40
Fan Motor Capacitor μF /
Heater Power Input W 25
Outdoor Unit Air Flow Volume m3/h 1950
Fan Type Axial-ow
Fan Diameter mm Φ400
Defrosting Method Automatic Defrosting
Climate Type T1
Isolation I
Moisture Protection IPX4
Permissible Excessive Operating Pressure for
the Discharge Side MPa 4.3
Permissible Excessive Operating Pressure for
the Suction Side MPa 2.5
Sound Pressure Level (H/M/L) dB (A) 50/-/-
Sound Power Level (H/M/L) dB (A) 61/-/-
Dimension(WXHXD) mm 732X555X330
Dimension of Carton Box (LXWXH) mm 791X373X583
Dimension of Package(LXWXH) mm 794X376X615
Net Weight kg 24.5
Gross Weight kg 27
Refrigerant R32
Refrigerant Charge kg 0.53
Connection
Pipe
Connection Pipe Length m 5
Connection Pipe Gas Additional Charge g/m 16
Outer Diameter Liquid Pipe inch 1/4
Outer Diameter Gas Pipe inch 3/8
Max Distance Height m 10
Max Distance Length m 15
Note: The connection pipe applies metric diameter.
The above data is subject to change without notice. Please refer to the nameplate of the unit.
2.1 Specification Sheet
2. Specifications

3
The above data is subject to change without notice. Please refer to the nameplate of the unit.
Outdoor
Unit
Outdoor Unit Model X3I ECO PLUS 35 SH LH
Outdoor Unit Product Code
Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO.,LTD
Compressor Model FTz-AN108ACBD
Compressor Oil FW68DA or equivalent
Compressor Type Rotary
Compressor LRA. A /
Compressor RLA A 4.40
Compressor Power Input W /
Compressor Overload Protector /
Throttling Method Electron expansion valve
Set Temperature Range ºC 16~30
Cooling Operation Ambient Temperature Range ºC -15~50
Heating Operation Ambient Temperature Range ºC -25~30
Condenser Form Aluminum Fin-copper Tube
Condenser Pipe Diameter mm Φ7.94
Condenser Rows-n Gap mm 1-1.2
Condenser Coil Length (LXDXW) mm 666X19.05X527
Fan Motor Speed rpm 900
Fan Motor Power Output W 30
Fan Motor RLA A 0.40
Fan Motor Capacitor μF /
Heater Power Input W 25
Outdoor Unit Air Flow Volume m3/h 1950
Fan Type Axial-ow
Fan Diameter mm Φ400
Defrosting Method Automatic Defrosting
Climate Type T1
Isolation I
Moisture Protection IPX4
Permissible Excessive Operating Pressure for
the Discharge Side MPa 4.3
Permissible Excessive Operating Pressure for
the Suction Side MPa 2.5
Sound Pressure Level (H/M/L) dB (A) 52/-/-
Sound Power Level (H/M/L) dB (A) 63/-/-
Dimension(WXHXD) mm 732X555X330
Dimension of Carton Box (LXWXH) mm 791X373X583
Dimension of Package(LXWXH) mm 794X376X598
Net Weight kg 24.5
Gross Weight kg 27
Refrigerant R32
Refrigerant Charge kg 0.57
Connection
Pipe
Connection Pipe Length m 5
Connection Pipe Gas Additional Charge g/m 16
Outer Diameter Liquid Pipe inch 1/4
Outer Diameter Gas Pipe inch 3/8
Max Distance Height m 10
Max Distance Length m 15
Note: The connection pipe applies metric diameter.

4
The above data is subject to change without notice. Please refer to the nameplate of the unit.
Outdoor
Unit
Outdoor Unit Model X3I ECO PLUS 52 SH LH
Outdoor Unit Product Code
Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO.,LTD
Compressor Model QXF-A120zH170A
Compressor Oil FW68DA or equivalent
Compressor Type Rotary
Compressor LRA. A 18.00
Compressor RLA A 5.00
Compressor Power Input W 1096
Compressor Overload Protector HPC115/95U1/KSD115ºC
Throttling Method Electron expansion valve
Set Temperature Range ºC 16~30
Cooling Operation Ambient Temperature Range ºC -15~50
Heating Operation Ambient Temperature Range ºC -25~30
Condenser Form Aluminum Fin-copper Tube
Condenser Pipe Diameter mm Φ7
Condenser Rows-n Gap mm 2-1.4
Condenser Coil Length (LXDXW) mm 895X38.1X528
Fan Motor Speed rpm 880
Fan Motor Power Output W 30
Fan Motor RLA A 0.40
Fan Motor Capacitor μF /
Heater Power Input W /
Outdoor Unit Air Flow Volume m3/h 2200
Fan Type Axial-ow
Fan Diameter mm Φ420
Defrosting Method Automatic Defrosting
Climate Type T1
Isolation I
Moisture Protection IPX4
Permissible Excessive Operating Pressure for
the Discharge Side MPa 4.3
Permissible Excessive Operating Pressure for
the Suction Side MPa 2.5
Sound Pressure Level (H/M/L) dB (A) 56/-/-
Sound Power Level (H/M/L) dB (A) 65/-/-
Dimension(WXHXD) mm 802X555X350
Dimension of Carton Box (LXWXH) mm 869X395X594
Dimension of Package(LXWXH) mm 872X398X620
Net Weight kg 30.5
Gross Weight kg 33
Refrigerant R32
Refrigerant Charge kg 0.82
Connection
Pipe
Connection Pipe Length m 5
Connection Pipe Gas Additional Charge g/m 16
Outer Diameter Liquid Pipe inch 1/4
Outer Diameter Gas Pipe inch 1/2
Max Distance Height m 10
Max Distance Length m 25
Note: The connection pipe applies metric diameter.

5
The above data is subject to change without notice. Please refer to the nameplate of the unit.
Outdoor
Unit
Outdoor Unit Model X3I ECO PLUS 71 SH LH
Outdoor Unit Product Code
Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO.,LTD
Compressor Model QXFS-M180zX170
Compressor Oil FW68DA or equivalent
Compressor Type Twin Rotary
Compressor LRA. A 35.00
Compressor RLA A 3.50
Compressor Power Input W 1610
Compressor Overload Protector KSD115ºC HPC 115/95U1
Throttling Method Electron expansion valve
Set Temperature Range ºC 16~30
Cooling Operation Ambient Temperature Range ºC -15~50
Heating Operation Ambient Temperature Range ºC -25~30
Condenser Form Aluminum Fin-copper Tube
Condenser Pipe Diameter mm Φ7
Condenser Rows-n Gap mm 2-1.4
Condenser Coil Length (LXDXW) mm 839X38.1X616
Fan Motor Speed rpm 800
Fan Motor Power Output W 60
Fan Motor RLA A 0.65
Fan Motor Capacitor μF /
Heater Power Input W /
Outdoor Unit Air Flow Volume m3/h 3600
Fan Type Axial-ow
Fan Diameter mm Φ520
Defrosting Method Automatic Defrosting
Climate Type T1
Isolation I
Moisture Protection IPX4
Permissible Excessive Operating Pressure for
the Discharge Side MPa 4.3
Permissible Excessive Operating Pressure for
the Suction Side MPa 2.5
Sound Pressure Level (H/M/L) dB (A) 59/-/-
Sound Power Level (H/M/L) dB (A) 70/-/-
Dimension(WXHXD) mm 958X660X402
Dimension of Carton Box (LXWXH) mm 1029X453X715
Dimension of Package(LXWXH) mm 1032X456X737
Net Weight kg 41.5
Gross Weight kg 46
Refrigerant R32
Refrigerant Charge kg 1.5
Connection
Pipe
Connection Pipe Length m 5
Connection Pipe Gas Additional Charge g/m 40
Outer Diameter Liquid Pipe inch 1/4
Outer Diameter Gas Pipe inch 5/8
Max Distance Height m 10
Max Distance Length m 25
Note: The connection pipe applies metric diameter.

6
2.2 Capacity Variation Ratio According to Temperature
Capacity ratio(%) Capacity ratio(%)
Capacity ratio(%
)
Capacity ratio(%)
Heating
0
20
40
60
80
100
120
-15-10 -5 0510 15 20 25
30
Pipe length:5m
Conditions
Indoor:DB20°C
Indoor air flow:Super High
18K
9/12K
Cooling
20
40
60
80
100
120
0
-15-10 -5 0510 15 20 25 30 35 40 45 50
18K
Condition
Indoor:DB27°C WB19°C
Indoor air flow:
High
Pipe length:5m
24K 24K
9/12K
0
20
40
60
80
100
120
-25-20 -15-10 -5 0510 15 20 25 30
HeatingCooling
Pipe length:5m
Conditions
Indoor:DB20°C
Indoor air flow:Super High
18K
9/12K
24K
20
40
60
80
100
120
0
18K
Condition
Indoor:DB27°C WB19°C
Indoor air flow:
High
Pipe length:5m
24K
9/12K
-15-10 -5 0510 15 20 25 30 35 40 45 50
Heating operation ambient temperature range is -15ºC~30ºC
Heating operation ambient temperature range is -25ºC~30ºC

7
Heating operation ambient temperature range is -15ºC~24ºC
Capacity ratio(%)
Cooling Heating
Capacity ratio(
%)
Outdoor temp.(°C)
Outdoor temp.(°C)
0
20
40
60
80
100
120
140
010152025-15-10 -5 5303543
0
20
40
60
80
100
120
140
0 2 7 15 18-22 -15 -10-7 21 24
Conditions
Indoor:DB20°C
Indoor air flow:Super High
Pipe length:5m
Condition
Pipe length:5m
Indoor:DB27°C WB19°C
Indoor air flow:
High
Capacity ratio(%)
Cooling Heating
Capacity ratio(
%)
Outdoor temp.(°C)
Outdoor temp.(°C)
0
20
40
60
80
100
120
140
0 2 7 15 18-22 -15 -10-7 21 24
Conditions
Indoor:DB20°C
Indoor air flow:Super High
Pipe length:5m
12K
12K
0%
20%
40%
60%
80%
100%
120%
-15-8.3-50 51013.919.423.930354043
Condition
Pipe length:5m
Indoor:DB27°C WB19°C
Indoor air flow:
09/18/24K
09/18/24K

8
2.3 Cooling and Heating Data Sheet in Rated Frequency
Instruction:
T1: Inlet and outlet pipe temperature of evaporator
T2: Inlet and outlet pipe temperature of condenser
P: Pressure at the side of big valve
Connection pipe length: 5 m.
Cooling:
Heating:
Rated cooling condition(°C) (DB/WB) Model
Pressure of gas pipe
connecting indoor and
outdoor unit
Inlet and outlet pipe temperature of
heat exchanger Fan speed of
indoor unit
Fan speed of
outdoor unit
Indoor Outdoor P (MPa) T1 (°C) T2 (°C)
27/19 35/24 09K 0.8 to 1.1 12 to 15 65 to 38 Super High High
27/19 35/24 12K 0.9 to 1.1 12 to 14 75 to 37 Super High High
27/19 35/24 18K/24K 0.9 to 1.1 12 to 14 75 to 37 Super High High
High
Rated cooling condition(°C) (DB/WB) Model
Pressure of gas pipe
connecting indoor and
outdoor unit
Inlet and outlet pipe temperature of
heat exchanger Fan speed of
indoor unit
Fan speed of
outdoor unit
Indoor Outdoor P (MPa) T1 (°C) T2 (°C)
20/- 7/6 09K 2.8 to 3.2 35 to 63 2 to 5 Super High High
High
20/- 7/6 12K 2.2 to 2.4 70 to 35 2 to 4 Super High High
20/- 7/6 18K/24K 2.2 to 2.4 70 to 35 2 to 4 Super High High

9
3. Outline Dimension Diagram
3.1 Indoor Unit
Model W H D W1 W2 W3
9K-12K 845 289 209 123 542 180
18K 970 300 224 104 685 181
24K 1078 325 246 206 685 187
Unit:mm
W
9K - 12K
D
H
W1 W2 W3 W1 W2 W3
W1 W2 W3
18K
140
190
38
Φ55 Φ55
38
24K
79
154
43
Φ70 Φ70
43
130 83
Ø55
Ø55
43 43

10
3.2 Outdoor Unit
X3I ECO PLUS 27 SH LH X3I ECO PLUS 35 SH LH X3I ECO PLUS 52 SH LH
Unit:mm
285 675
732
455
310
555
330

11
X3I ECO PLUS 71 SH LH
Unit:mm
958
660
402
340 889
371
570

12
4. Refrigerant System Diagram
X3I ECO PLUS 35 SH LH X3I ECO PLUS 52 SH LH X3I ECO PLUS 71 SH LH
X3I ECO PLUS 27 SH LH
Connection pipe specication:
Liquid pipe:1/4"
Gas pipe:3/8" (09/12K)
Gas pipe:1/2" (18K)
Gas pipe:5/8" (24K)
Indoor unit
COOLING
4-Way valve
HEATING
Outdoor unit
Discharge
Suction
Heat
exchanger
(evaporator)
Heat
exchanger
(condenser)
Valve
Valve
side
Liquid pipe
Gas pipe
side
Strainer Electric
expand
valve
Compressor
Accumlator
Strainer
Indoor unit
COOLING
4-Way valve
HEATING
Discharge
Outdoor unit
Suction
Heat
exchanger
(evaporator) Heat
exchanger
(condenser)
Valve
Valve
side
Liquid pipe
Gas pipe
side
Strainer Strainer
Capillary
Accumlator
Compressor

13
5. Electrical Part
5.1 Wiring Diagram
●Instruction
Symbol Symbol Color Symbol Symbol Color Symbol Name
WH White GN Green CAP Jumper cap
YE Yellow BN Brown COMP Compressor
RD Red BU Blue Grounding wire
YEGN Yellow/Green BK Black / /
VT Violet OG Orange / /
Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model.

14
● Outdoor Unit
X3I ECO PLUS 27 SH LH X3I ECO PLUS 35 SH LH
INDOOR UNIT
OPTIONAL OPTIONAL OPTIONAL
VT VT
4WAY
VALVE
4-WAY
4YV
T-SEN
EXHAUST
TEMP.
OUTROOM
TEMP.
OUTTUBE
RT3
RT2
TEMP.
SENSOR SENSOR SENSOR
COMP
COMP.
RD
YE
BU
YE RD
U
VW
BU
E
AP: Main Board
15K
20K 50K
RT1
MAGNETIC
RING
L1 L1 L1
CN2
BU
BK
BN
N(1)
2
L2
L2
BU
BK
BN
MAGNETIC RING
TERMINAL
XT
BLOCK
POWER
L
N
YEGN
BU
BN(BK)
YEGN
ELECTRICAL
BOX
PE
L2
WARNING
Please don't touch any
terminal when the machine is
running ,stopping or has been
powered off for less than 30
minutes to prevent the risk
of electric shock !
N
COMU(COM-IN)
AC_L(AC-L)
HEAT-B
EH1
Bottom
Band
Heater
EKV
FA
ELECTRONIC
EXPANSION
VALVE
OFAN
PE
YEGN
FAN
M
MOTOR
PE
L(3)
to the iron shell motor.
NOTE:Motor ground only applies
YEGN

15
X3I ECO PLUS 52 SH LH X3I ECO PLUS 71 SH LH
INDOOR UNIT
OPTIONAL
OPTIONAL OPTIONAL
OPTIONAL
T-SENSOR
EXHAUST
TEMP.
OUTROOM
TEMP.
OUTTUBE
RT3
RT2
TEMP.
SENSOR SENSOR SENSOR
15K
20K 50K
(T-SEN) HEAT-B FA
AP1: PRINTED CIRCUIT BOARD
RT1
BU
BK
BN
N(1)
2
L2
L2
BU
BK
BN
MAGNETIC RING
TERMINAL
XT
BLOCK
POWER
L
N
YEGN
BU
BN(BK)
YEGN
L2
FAN
M
OVC-COMP 4WAY OFAN
MOTOR
L(3)
PE
N
PE
PE
COM-INNER
AC-L
E
(COM-IN)
powered off for less than 30
minutes to prevent the risk
of electric shock !
Please don't touch any
terminal when the machine is
running ,stopping or has been
WARNING
VT VT
VALVE
4-WAY
4YV
COMP
COMP.
YE RD
U
BU
VW
MAGNETIC
RING
L1 L1 L1
CN2
EH1
BOTTOM
BAND
HEATER
EKV
ELECTRONIC
VALVE
EXPANSION
WH WH
YEGN
OVERLOAD
PROTECTOR
SAT

16
No. Name No. Name
1 Interface of health function neutral wire 10 Terminal of temperature sensor
2 Neutral wire terminal 11 WIFI terminal
3 Motor terminal 12 Wired controller terminal
4 Interface of health function live wire 13 Interface of display board
5 Auto button 14 Jumper cap
6 Up&down swing terminal 15 Communication terminal for indoor unit
and outdoor unit
7 Interface of Motor feedback 16 Terminal of live wire used for supplying
power for outdoor unit
8 Interface of gate-control 17 Live wire terminal
9 Left&right swing terminal 18 Fuse
5.2 PCB Printed Diagram
Indoor Unit
09/12/18K
12 34 567
8
9
10
11
12
13
1415
16
17
18

17
123415
5
6
7
8
9
10
11
12
13
14
No. Name No. Name
1 Neutral wire 9 Display interface
2 Interface of health function live wire 10 WIFI interface
3 DC fan interface 11 Grounding wire
4 Up&down swing interface 12 Terminal with outdoor unit
communication wire
5 Left&right swing interface 13 Live wire interface
6 Interface of wired controller 14 Interface of health function neutral wire
7 Interface of gate control 15 Interface of ultraviolet clean
8 Interface of temperature sensor
24K