DLCERA · Specifications subject to change without notice. DLCERA SERVICE MANUAL Outdoor Unit...
Transcript of DLCERA · Specifications subject to change without notice. DLCERA SERVICE MANUAL Outdoor Unit...
Specifications subject to change without notice.
DLCERASERVICE MANUAL
Outdoor Unit Single Zone Ductless System − Sizes 09 to 24
TABLE OF CONTENTSPAGE
SAFETY CONSIDERATIONS 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .INTRODUCTION 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MODEL/SERIAL NUMBER NOMENCLATURES 2. . . . . . . . . . . . .SPECIFICATIONS 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DIMENSIONS 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .CLEARANCES 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ELECTRICAL DATA 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .WIRING 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .CONNECTION DIAGRAMS 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . .WIRING DIAGRAM 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .REFRIGERATION CYCLE DIAGRAMS 14. . . . . . . . . . . . . . . . . . . .REFRIGERANT LINES 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SYSTEM EVACUATION AND CHARGING 16. . . . . . . . . . . . . . . . .ELECTRONIC FUNCTIONS 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . .TROUBLESHOOTING 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .OUTDOOR UNIT DIAGNOSTIC GUIDES 22. . . . . . . . . . . . . . . . . .PCB DIAGRAMS 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DIAGNOSIS AND SOLUTION 25. . . . . . . . . . . . . . . . . . . . . . . . . . .DISASSEMBLY INSTRUCTIONS 46. . . . . . . . . . . . . . . . . . . . . . . . .APPENDIX 69. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SAFETY CONSIDERATIONSInstalling, starting up, and servicing air−conditioning equipment can behazardous due to system pressures, electrical components, andequipment location (roofs, elevated structures, etc.).Only trained, qualified installers and service mechanics should install,start−up, and service this equipment.
Untrained personnel can perform basic maintenance functions such ascleaning coils. All other operations should be performed by trainedservice personnel.When working on the equipment, observe precautions in the literatureand on tags, stickers, and labels attached to the equipment.Follow all safety codes. Wear safety glasses and work gloves. Keepquenching cloth and fire extinguisher nearby when brazing. Use care inhandling, rigging, and setting bulky equipment.Read this manual thoroughly and follow all warnings or cautions includedin literature and attached to the unit. Consult local building codes andNational Electrical Code (NEC) for special requirements. Recognize safety
information. This is the safety−alert symbol ! ! . When you see this symbolon the unit and in instructions or manuals, be alert to the potential forpersonal injury. Understand these signal words: DANGER, WARNING,and CAUTION.
These words are used with the safety−alert symbol. DANGERidentifies the most serious hazards which will result in severe personalinjury or death. WARNING signifies hazards which could result inpersonal injury or death. CAUTION is used to identify unsafe practiceswhich may result in minor personal injury or product and propertydamage. NOTE is used to highlight suggestions which will result inenhanced installation, reliability, or operation.
! WARNINGELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personalinjury or death.
Before installing, modifying, or servicing system, mainelectrical disconnect switch must be in the OFFposition. There may be more than 1 disconnect switch.Lock out and tag switch with a suitable warning label.
EXPLOSION HAZARD
Failure to follow this warning couldresult in death, serious personal injury,and/or property damage.
Never use air or gases containingoxygen for leak testing or operatingrefrigerant compressors. Pressurizedmixtures of air or gases containingoxygen can lead to an explosion.
! WARNING
CAUTION!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipmentdamage or improper operation.
Do not bury more than 36 in. (914 mm) of refrigerant pipein the ground. If any section of pipe is buried, there must bea 6 in. (152 mm) vertical rise to the valve connections onthe outdoor units. If more than the recommended length isburied, refrigerant may migrate to the cooler buried sectionduring extended periods of system shutdown. This causesrefrigerant slugging and could possibly damage thecompressor at start−up.
INTRODUCTIONThis Service Manual provides the necessary information to service, repair,and maintain the outdoor units. Section 2 of this manual has an appendixwith data required to perform troubleshooting. Use the Table of Contentsto locate a desired topic.
2 32808001101Specifications subject to change without notice.
MODEL/SERIAL NUMBER NOMENCLATURES
Table 1—Unit Sizes
Cooling Only
SYSTEM TONS BTUh VOLTAGE - PHASE OUTDOOR MODEL
1.00 12,000 115-1 DLCERAA12AAJ
1.00 12,000 208/230-1 DLCERAA12AAK
1.50 18,000 208/230-1 DLCERAA18AAK
2.00 24,000 208/230-1 DLCERAA24AAK
Heating Pump
1.00 12,000 115-1 DLCERAH12AAJ
0.75 9,000 208/230-1 DLCERAH09AAK
1.00 12,000 208/230-1 DLCERAH12AAK
1.50 18,000 208/230-1 DLCERAH18AAK
2.00 24,000 208/230-1 DLCERAH24AAK
AR 09
A = MAJOR SERIES
UNIT TYPER = OUTDOOR UNIT
MAXIMUM NUMBER OF FAN COIL UNITS THATCAN BE CONNECTED TO THE OUTDOOR UNIT
A = 1:1
OUTDOOR UNIT
DLC E KH
DLC = CONDENSING UNIT
E = MODEL
VOLTAGEJ =115-1-60K = 208/230-1-60
NOMINAL CAPACITY09 - 3/4 TON12 - 1 TON18 - 1.5 TONS 24 - 2 TONS
A A
SYSTEM TYPEA = COOLING ONLYH = HEAT PUMP
A = VARIATION
18 01
Year of Manufacture Week of Manufacture
10001
Sequential Serial Number
V
V = All Models
Use of the AHRI CertifiedTM Mark indicates amanufacturer’s participation in the program For verification of certification for individual products, go to www.ahridirectory.org.
32808001101 3Specifications subject to change without notice.
SPECIFICATIONSTable 2—Specifications (Cooling Only)
COOLING ONLY
SystemSize 12K 12K 18K 24K
Outdoor Model DLCERAA12AAJ DLCERAA12AAK DLCERAA18AAK DLCERAA24AAK
Electrical
Voltage, Phase, Cycle V/Ph/Hz 115-1-60 208/230-1-60 208/230-1-60 208/230-1-60
MCA A. 13 7 11 16
MOCP - Fuse Rating A. 20 15 15 25
OperatingCooling Outdoor DBMin - Max
° F(° C) 0~122 (-17~50) 0~122 (-17~50) 0~122 (-17~50) 0~122 (-17~50)
Piping
Total Piping Length ft (m) 82 (25) 82 (25) 98 (30) 164 (50)
Piping Lift* ft (m) 33 (10) 33 (10) 66 (20) 66 (20)
Pipe Connection Size - Liquid In.(mm) 1/4 (6.35) 1/4 (6.35) 1/4 (6.35) 3/8 (9.52)
Pipe ConnectionSize - Suction
In.(mm) 1/2 (12.7) 1/2 (12.7) 1/2 (12.7) 5/8 (16)
Refrigerant
Type R410A R410A R410A R410A
Charge lbs (kg) 1.30 (0.59) 1.30 (0.59) 2.09 (0.95) 2.64 (1.20)
Metering Device EEV EEV EEV EEV
Outdoor Coil
Face Area Sq. Ft. 4.15 4.15 4.78 4.78
No. Rows 1 1 2 2
Fins per inch 22 22 22 22
Circuits 2 2 4 6
Compressor
Type Rotary Inverter Rotary Inverter Rotary Inverter Rotary Inverter
Model ASN98D22UFZ ASN98D22UFZ ASM135D23UFZ ATF235D22UMT
Oil Type VG74 VG74 VG74 VG74
Oil Charge Fl. Oz. 13.0 13.0 13.0 23.6
Rated Current RLA 9.5 4.5 7.0 11.0
Outdoor
Unit Width In.(mm) 30.31(770) 30.31(770) 31.50(800) 33.27(845)
Unit Height In.(mm) 21.85(555) 21.85(555) 21.81(554) 27.64(702)
Unit Depth In.(mm) 11.81(300) 11.81(300) 13.11(333) 14.29(363)
Net Weight lbs (kg) 57.8(26.2) 53.8(24.4) 70.1(31.8) 88.6(40.2)
Airflow CFM 1,170 1,170 1,170 1,880
Sound Pressure dB(A) 52.0 54.0 57.0 59.5
* Condensing unit above or below the indoor unit
4 32808001101Specifications subject to change without notice.
SPECIFICATIONS (CONT)Table 3—Specifications (Heat Pump)
HEAT PUMP
SystemSize 12 9 12 18 24
Outdoor Model DLCERAH12AAJ DLCERAH09AAK DLCERAH12AAK DLCERAH18AAK DLCERAH24AAK
Electrical
Voltage, Phase, Cycle V/Ph/Hz 115-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60
MCA A. 13 8 10 15 18
MOCP - Fuse Rating A. 20 15 15 20 25
OperatingRange
Cooling Outdoor DB Min- Max
° F(° C) 0~122 (-17~50) 0~122 (-17~50) 0~122 (-17~50) 0~122 (-17~50) 0~122 (-17~50)
Heating Outdoor DB Min- Max
° F(° C) 0~86 (-17~30) 0~86 (-17~30) 0~86 (-17~30) 0~86 (-17~30) 0~86 (-17~30)
Piping
Total Piping Length ft (m) 82 (25) 82 (25) 82 (25) 98 (30) 164 (50)
Piping Lift* ft (m) 33 (10) 33 (10) 33 (10) 66 (20) 66 (20)
Pipe ConnectionSize - Liquid
In.(mm) 1/4 (6.35) 1/4 (6.35) 1/4 (6.35) 1/4 (6.35) 3/8 (9.52)
Pipe ConnectionSize - Suction
In.(mm) 1/2 (12.7) 3/8 (9.52) 1/2 (12.7) 1/2 (12.7) 5/8 (16)
Refrigerant
Type R410A R410A R410A R410A R410A
Charge lbs (kg) 2.11 (0.96) 1.76 (0.80) 2.11 (0.96) 2.82 (1.28) 3.97 (1.80)
Metering Device EEV EEV EEV EEV EEV
Outdoor Coil
Face Area Sq. Ft. 4.1 4.1 4.1 4.7 5.3
No. Rows 1.5 1 1.5 2 2
Fins per inch 18 18 18 18 18
Circuits 4 2 4 4 4
Compressor
Type Rotary Inverter Rotary Inverter Rotary Inverter Rotary Inverter Rotary Inverter
Model ASN98D22UFZ ASN98D22UFZ ASN98D22UFZ ASM135D23UFZ ATF235D22UMT
Oil Type VG74 VG74 VG74 VG74 VG74
Oil Charge Fl. Oz. 13.0 13.0 13.0 15.8 23.6
Rated Current RLA 9.5 5.5 6.8 10.5 12.0
Outdoor
Unit Width In.(mm) 30.31(770) 30.31(770) 30.31(770) 31.50(800) 33.27(845)
Unit Height In.(mm) 21.85(555) 21.85(555) 21.85(555) 21.81(554) 27.64(702)
Unit Depth In.(mm) 11.81(300) 11.81(300) 11.81(300) 13.11(333) 14.29(363)
Net Weight lbs (kg) 69.0(31.3) 63(28.6) 65.5(29.7) 79.6(36.1) 114.2(51.8)
Airflow CFM 1,170 1,170 1,170 1,170 1,765
Sound Pressure dB(A) 54.5 57.2 57.4 57.0 60.2
* Condensing unit above or below the indoor unit
32808001101 5Specifications subject to change without notice.
DIMENSIONSTable 4—Dimensions
CoolingOnly
System Size Height (H) in. (mm) Width (W) in. (mm) Depth (D) in. (mm) Weight-Net lbs. (kg)
12K (115V) 21.85(555) 30.31(770) 11.81(300) 57.8(26.2)
12K (208/230V) 21.85(555) 30.31(770) 11.81(300) 53.8(24.4)
18K (208/230V) 21.81(554) 31.50(800) 13.11(333) 70.1(31.8)
24K (208/230V) 27.64(702) 33.27(845) 14.29(363) 88.6(40.2)
HeatPump
System Size Height (H) in. (mm) Width (W) in. (mm) Depth (D) in. (mm) Weight-Net lbs. (kg)
12K (115V) 21.85(555) 30.31(770) 11.81(300) 69.0(31.3)
9K (208/230V) 21.85(555) 30.31(770) 11.81(300) 63.0(28.6)
12K (208/230V) 21.85(555) 30.31(770) 11.81(300) 65.5(29.7)
18K (208/230V) 21.81(554) 31.50(800) 13.11(333) 79.6(36.1)
24K (208/230V) 27.64(702) 33.27(845) 14.29(363) 114.2(51.8)
19.17(487) W1
2.76(70) W
11
.73
(298)
21
.85
(555)
11.81(300) D
H
0.4
7(1
2)
2.3
6(6
0)
3.6
6(9
3)
H1
H2
D1
30.31(770) W
30.66(779) W3
13
.07
(322)
D2
0.98(25) B1
3.5
4(9
0)
B2
2.42(61.5) A2
0.47(12) A1
R0.
24(6
)
11
.26
(286)
D3
Unit: inch(mm)
Fig. 1 - Sizes 9K and 12K
6 32808001101Specifications subject to change without notice.
DIMENSIONS − OUTDOOR (CONT)
31.50 (800)
20.24 (514)21
.81
(554
)
2.36
(60)
3.37
(85.
5)
13.3
9 (3
40)
0.47
(12)
12.2
4 (3
11)
12.8
0 (3
25)
13.11 (333)
2.76 (7 0)
H
H1
H2
D1D2 D3
2.43 (6 1.8)
4.17
(106
)
0.87 (2 2)R 0.79 (R 20)
R 0.24 (R 6)
2.43 (6 1.6)
D
W
W1
W2
B1
B2
A2
A1
Unit: inch(mm)Fig. 2 - Size 18K
32808001101 7Specifications subject to change without notice.
DIMENSIONS − OUTDOOR (CONT)
Unit: inch (mm)Fig. 3 - Size 24K
8 32808001101Specifications subject to change without notice.
CLEARANCES
A
D B
Air-outlet
Air-inlet
C
E
Fig. 4 - Outdoor Unit Clearance
Table 5—ClearancesUNIT MINIMUM VALUE in. (mm)
A 24 (610)
B 24 (610)
C 24 (610)
D 4 (101)
E 4 (101)
NOTE: The outdoor unit must be mounted at least 2in. (50mm) above the maximum anticipated snow depth.
118in (300cm) or more
19in (48cm) or more on a multiple parallel unit arrangement4in (10cm) or more on a single parallel unit arrangement
24in (60cm) or more
59in (150cm) or more on a multiple parallel unit arrangement24in (61cm) or more on a single parallel unit arrangement
9.8in (25cm) or more for proper airflow24in (61cm) or more is recommended for service
9.8in (25cm)or more for proper airflow 24in (61cm) or more is recommended for service
Fig. 5 - Clearances for Multiple Units
32808001101 9Specifications subject to change without notice.
ELECTRICAL DATATable 6—Electrical Data
Cooling Only
Outdoor Unit Size 12K 12K 18K 24K
Volts-PH-Hz (115V) (208/230V) (208/230V) (208/230V)
Max – Min*Oper. Voltage
127-104 253-187 253-187 253-187
Power SupplyMCA 7 7 11 16
MOCP 15 15 15 25
Compressor RLA 9.5 4.5 7 11
Outdoor Fan Motor
FLA 0.6 0.4 0.5 0.6
Rated HP 0.054 0.054 0.065 0.068
Output 40 40 48 45
Heat Pump
Outdoor Unit Size 12K 9K 12K 18K 24K
Volts-PH-Hz (115V) (208/230V) (208/230V) (208/230V) (208/230V)
Max – Min*Oper. Voltage
127-104 253-187 253-187 253-187 253-187
Power SupplyMCA 13 8 10 15 18
MOCP 20 15 15 20 25
Compressor RLA 10.5 5.5 6.8 11.5 12
Outdoor Fan Motor
FLA 0.6 0.4 0.4 0.5 0.6
Rated HP 0.054 0.054 0.054 0.054 0.068
Output 40 40 40 40 50
*Permissible limits of the voltage range at which the unit will operate satisfactorily.
LEGEND
FLA - Full Load Amps
MCA - Minimum Circuit Amps
MOCP - Maximum Over-Current Protection
RLA - Rated Load Amps
WIRINGAll wires must be sized per NEC (National Electrical Code) or CEC(Canadian Electrical Code) and local codes. Use Electrical Data tableMCA (minimum circuit amps) and MOCP (maximum over currentprotection) to correctly size the wires and the disconnect fuse orbreakers respectively.Recommended Connection Method for Power and CommunicationWiring:
The main power is supplied to the outdoor unit. The field supplied 14/3stranded wire with ground with a 600 volt insulation rating,power/communication wiring from the outdoor unit to indoor unitconsists of four (4) wires and provides the power for the indoor unit.Two wires are line voltage AC power, one is communication wiring (S)and the other is a ground wire. Wiring between indoor and outdoor unitis polarity sensitive. The use of BX wire is NOT recommended.
If installed in a high Electromagnetic field (EMF) area andcommunication issues exists, a 14/2 stranded shielded wire can be usedto replace L2/N and (S) between outdoor unit and indoor unit landingthe shield onto ground in the outdoor unit only.
EQUIPMENT DAMAGE HAZARDFailure to follow this caution may result in equipmentdamage or improper operation.Wires should be sized based on NEC and local codes.
CAUTION!
CAUTION!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damageor improper operation. Be sure to comply with local codes while running wire from
the indoor unit to the outdoor unit. Every wire must be connected firmly. Loose wiring may
cause the terminal to overheat or result in unit malfunction.A fire hazard may also exist. Ensure all wiring is tightlyconnected.
No wire should touch the refrigerant tubing, compressor orany moving parts.
Disconnecting means must be provided and shall be locatedwithin sight and readily accessible from the air conditioner.
Connecting cable with conduit shall be routed through thehole in the conduit panel.
10 32808001101Specifications subject to change without notice.
CONNECTION DIAGRAM
SL N
115-1-60
Power Supply115-1-60
Main L N S L N
Power to Indoor Unit
GND
Ground
CONNECTING CABLEOUTDOOR TO INDOOR
Indoor SignalHighVoltage115-1-60
GND
115-1-60FIELD POWER SUPPLY
Indoor SignalHighVoltage
Indoor UnitPower Supply
SL1 L2
208/230-1-60
Power Supply Main
L1 L2 S L1 L2
Indoor UnitPower Supply
CONNECTING CABLEOUTDOOR TO INDOOR
208/230-1-60
Indoor SignalHighVoltage
GND
Ground
Power toIndoor Unit
Indoor SignalHighVoltage
GND
208/230-1-60FIELD POWER SUPPLY
208/230-1-60
115V Indoor Unit 115V Outdoor Unit 230V Indoor Unit 230V Outdoor UnitFig. 6 - Connection Diagrams
Notes:1. Do not use thermostat wire for any connection between indoor and outdoor units.2. All connections between indoor and outdoor units must be as shown. The connections are sensitive to polarity and will result in a fault code.
WIRING DIAGRAMS
COMPRESSOR
Y/G
4-WAY
CN 50
DC-FANOPTIONAL:DC-FAN
CN 7
3
AC-FA
N
OPTIONAL: AC-FAN
5CN 25CN 60
OPTIONAL
CRANKCASE HEATER
CN 17
OPTIONAL
LB
EU
BROWN
YELLOW OR BLACK
SN N
DE
R LB
EU
Y/GL
Y/G
AMBIENT TEMP. SENSOR
DISCHARGE TEMP. SENSOR
CN 21
CONDENSER TEMP . SENSOR
Y/G
CN 1A
Y/G
Y/G
3
CN4_
1CN
4_2
CN4_
3
CN4_
4
REACTOR
CAPACI
TOR
BROW
N(BL
ACK)
BROW
N(BL
ACK)
BLACK
(BROW
N)
BLACK
(BROW
N)
Y/G
22
BLACK
WV
REDBLUE
U5
GRAYBLACK
GRAY3
BLACK2
BROWN1
BROWNO
PT
ION
ALT
NIOJ
TS
AF
NOTE: The connection wires for thereactor and the capacitor should bethe same color; either black or brown.
Notes:This symbol indicates the elementis optional, the actual shape shallprevail.
16022000B23477
Input: 115V high voltage connector with
L/N/signal/ground
Output: 0~320VDC to control DC FAN
Output:115VAC High voltage connector for
power factor corrector(PFC)
Input: temperature acquisition (0~5VDC)
Output: 0~115 VAC to control AC FAN
Connector for electronic expansion
valve(0-12VDC)
Output: 115 VAC to control 4-way valveOutput: 115VAC to control crankcase heater
Fig. 7 - Wiring Diagram Size 12K (115V)
32808001101 11Specifications subject to change without notice.
WIRING DIAGRAMS (CONT)
4-WAY
DC-FANOPTIONAL:DC-FAN
CN 7
3
CN 60OPTIONAL
CRANKCASE HEATER
CN 17OPTIONAL
BLUE
BROWN
YELLOW OR BLACK
INDOOR UNIT
SL2 L2
POWER SUPPLY
RED
BLUE OR BLACK
Y/GL1
Y/G
AMBIENT TEMP. SENSOR
DISCHARGE TEMP. SENSOR
CN 21
CONDENSER TEMP. SENSOR
Y/G
CN 1A
Y/G
Y/G
COMPRESSOR
Y/G
CN 503
U V W
BLUE
RED
BLACK
AC-FANCAPACITOR
OPTIO
NAL: AC-FAN
5
3Y/G
Notes:This symbol indicates the element is optional, the actual shape shallprevail.
CN 32CN 9
REACTOR 1005AL
OPTIONAL
BLUE
BLUE
MAIN BOARD
CN 25
RED
BLUE
~
Input: 220V high voltage connector with
L/N/signal/ground
Output: 0~320V DC to connect DC FAN
To connect PFC reactor
Input: temperature sensor connector (0~5V DC)
Output: 0~220V AC to connect AC FAN
Output: 0~320V AC to connect compressor
Output: 0~220V AC to connect 4-way valveOutput: 220V AC to connect crankcase heater
Fig. 8 - Wiring Diagram − Sizes 09K, 12K (208−230V)
12 32808001101Specifications subject to change without notice.
WIRING DIAGRAMS (CONTINUED)
123
UVW
CN60
COMPRESSOR
Y/G
REDBLUE
BLACK
OUTDOORMAINPCB
BLUE
BLACKRED
CN13CN12
W-4AY
REACTOR
BLUE
BLUE
UVW
Y/G
RED
L1 L2 S L1 L2
BLACK(BLUE)
L1 L2
OPTIONAL
CN16
OPTIONAL:the electric heating belt of compressor
HEATER 1
OUTDOOR WIRING DIAGRAM
OUT DOOR DC FAN
CN414
3
OUT DOOR AC FAN
F NA PAC
TI CARO
BROWNBLUE
CN5
Applicable to the units adopting DC motor only
Applicable to the units adopting AC motor only
Y/G
CN30
CN10CN1
CONDENSER TEMPERATURE SENSOR
OUTDOOR AMBIENTTEMPERATURE SENSOR
WHITE
BLAC
K
DISCHARGE SENSOR
KCALB
DER
CN17
(RED
)
BLACK
(BLACK)CN2
CN7CN8
Y/G
CN6-1
NWORB
BLUE
YELLOW
CN3
Input: 230V high voltage connector with
L1/L2/signal/ground
Output: 0~320VDC to control DC FAN
Output: PWM for UVW to control
Compressor(0~320VAC)Output: 220V AC to control crankcase heater
Output: 0~220V AC to control 4-way valveInput: Temperature acquisition(0-5VDC)
Output: 0~220VAC to control AC FAN
CN12/CN13 Output: Connection of the high voltage (REACTOR)
Fig. 9 - Wiring Diagram Sizes 18K − 24K (Heat Pump Units)
32808001101 13Specifications subject to change without notice.
WIRING DIAGRAMS (CONTINUED)
4-WAY
DC-FANOPTIONAL:DC-FAN
CN 414
3
CN 60
OPTIONAL
CRANKCASE HEATER
CN 16
OPTIONAL
AMBIENT TEMP. SENSOR
DISCHARGE TEMP. SENSOR
CN 17
CONDENSER TEMP. SENSORY/G
OUTDOORMAINPCB
BLUE
BROWN
BLACK
SL2 L1 L2
RED
BLUE
L1Y/G
Y/G
CN 3
Y/G
Y/G
Y/G
OPTIONAL
CAPACITOR
OPTIONAL: AC-FAN
5
3
CN 5
Y/G
L1 L2
Notes:This symbol indicatesthe element is optional,the actual shape shallprevail.
S
Yellow
Red
Blue
According to the real objects
16022000B23636
COMPRESSOR
BLUE
BLACK
CN 21
CN 29CN 28CN 27
BLUERED
BLACK
WVU
Input: 220V high voltage connector with
L1/L2/signal/ground
Output: 0~320VDC to control DC FAN
Output: PWM for UVW to control
Compressor(0~320VAC)Output: 220V AC to control crankcase heater
Output: 0~220V AC to control 4-way valveInput: Temperature acquisition(0-5VDC)
RED
Output: 0~220VAC to control AC FAN
Fig. 10 - Wiring Diagram Sizes 18K − 24K (Cooling Only Units)
14 32808001101Specifications subject to change without notice.
REFRIGERATION CYCLE DIAGRAMS
LIQUID SIDE
GAS SIDE
HEATEXCHANGE(EVAPORATOR)
HEATEXCHANGE(CONDENSER)
COMPRESSOR
2−WAY VALVE
3−WAY VALVE
4−WAY VALVE
COOLING
HEATING
T2 Evaporatortemp. sensor
T1 Room temp.sensor
ACCUMULATOR
INDOOR OUTDOOR
CHECK VALVE(Heating Model only)
CAPILIARY TUBE
Fig. 11 - Heat Pumps
32808001101 15Specifications subject to change without notice.
REFRIGERANT LINESGeneral Refrigerant Line Sizing
1. The outdoor units are shipped with a full charge of R410Arefrigerant. All charges, line sizing, and capacities are based onruns of 25ft. (7.6 m). For runs over 25 ft. (7.6 m), consult thelong−line applications section for the proper charge adjustments.
2. The minimum refrigerant line length between the indoor andoutdoor units is 10 ft. (3 m).
3. Refrigerant lines should not be buried in the ground. If it isnecessary to bury the lines, not more than 36 in (914 mm)should be buried. Provide a minimum 6in (152 mm) vertical riseto the service valves to prevent refrigerant migration.
4. Both lines must be insulated. Use a minimum of 1/2in. (12.7mm) thick insulation. Closed−cell insulation is recommended inall long−line applications.
5. Special consideration should be given to isolatinginterconnecting tubing from the building structure. Isolate thethe tubing so vibration or noise is not transmitted into thestructure.
IMPORTANT: Both refrigerant lines must be insulated separately.
Table 7 lists the maximum lengths allowed.
Table 7—Piping and Refrigerant InformationSystem Size 12V (115V) 9K (208-230V) 12K (208-230V) 18 (208-230V) 24K (208-230V)
Piping
Min. Piping Length ft. (m) 9.8(3) 9.8(3) 9.8(3) 9.8(3) 9.8(3)
Standard Piping Length ft. (m) 24.6(7.5) 24.6(7.5) 24.6(7.5) 24.6(7.5) 24.6(7.5)
Max. outdoor-indoorheight difference
(OU higher than IU)ft. (m) 32(10) 32(10) 32(10) 65(20) 65(20)
Max. outdoor-indoorheight difference
(IU higher than OU)ft. (m) 33(10) 33(10) 33(10) 66(20) 66(20)
Max. Piping Length withno additional refrigerant
charge per System(Standard Piping length)
ft. (m) 24.6(7.5) 24.6(7.5) 24.6(7.5) 24.6(7.5) 24.6(7.5)
Total Max. PipingLength per system
ft. (m) 82(25) 82(25) 82(25) 98(30) 98(50)
Additional refrigerantcharge (between Standard
– Max piping length)Oz/ft (g/m) 0.161(15) 0.161(15) 0.161(15) 0.161(15) 0.322(30)
Suction Pipe(size - connection type)
In (mm) ø1/2(12.7) ø3/8(9.52) ø1/2(12.7) ø1/2(12.7) ø5/8(15.9)
Liquid Pipe(size - connection type)
In (mm) ø1/4(6.35) ø1/4(6.35) ø1/4(6.35) ø1/4(6.35) ø3/8(9.52)
Refrigerant
Refrigerant Type Type R410A R410A R410A R410A R410A
Cooling Only ModelsCharge Amount
Lbs (kg) 1.30(0.59) 1.06(0.48) 1.30(0.59) 2.1(0.95) 2.65(1.2)
Heat Pump ModelsCharge Amount
Lbs (kg) 2.12(0.96) 1.76(0.8) 2.12(0.96) 2.82(1.28) 3.97(1.8)
Long Line Applications:
1. No change in line sizing is required.
2. Add refrigerant per Table 7.
16 32808001101Specifications subject to change without notice.
SYSTEM EVACUATION ANDCHARGING
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipmentdamage or improper operation.
Never use the system compressor as a vacuum pump.
CAUTION!
Refrigerant tubes and indoor coil should be evacuated using therecommended deep vacuum method of 500 microns. Always break avacuum with dry nitrogen.
System Vacuum and ChargeUsing Vacuum Pump
1. Completely tighten all flare nuts and connect manifold gagecharge hose to a charge port of the low side service valve (seeFig. 12).
2. Connect the charge hose to the vacuum pump.3. Fully open the low side of manifold gage (see Fig. 13).
4. Start the vacuum pump5. Evacuate using the triple evacuation method.
6. After evacuation is complete, fully close the low side of mani-fold gage and stop the vacuum pump operation.
7. The factory charge contained in the outdoor unit is good for upto 25 ft. (8 m) of line length. For refrigerant lines longer than25 ft. (8 m), add refrigerant as specified in the ADDITIONALREFRIGERANT CHARGE table in this document.
8. Disconnect the charge hose from the charge connection of thelow side service valve.
9. Fully open service valves B and A.10. Securely tighten the service valves caps.
Outdoor Unit Indoor UnitRefrigerant
Service Valve
Low Side
High Side
A
B
C
D
Fig. 12 - Service Valve
Manifold Gage
500 microns
Low side valve High side valve
Charge hose Charge hose
Vacuum pump
Low side valve
Fig. 13 - Manifold
Deep Vacuum Method
The deep vacuum method requires a vacuum pump capable of pulling avacuum of 500 microns and a vacuum gage capable of accuratelymeasuring this vacuum depth. The deep vacuum method is the mostpositive way of assuring a system is free of air and liquid water (see Fig.14).
500
MINUTES0 1 2 3 4 5 6 7
1000
1500
LEAK INSYSTEM
VACUUM TIGHTTOO WET
TIGHTDRY SYSTEM
2000MIC
RO
NS
2500
3000
3500
4000
4500
5000
Fig. 14 - Deep Vacuum Graph
Triple Evacuation MethodThe triple evacuation method should be used. Refer to Fig. 15 andproceed as follows:
1. Pump the system down to 1500 microns and allow the pump tocontinue operating for an additional 15 minutes.
2. Close the service valves and shut off the vacuum pump.
3. Connect a dry nitrogen cylinder and regulator to the system andbreak vacuum until the system reaches 2 psig.
4. Close the service valve and allow the system to stand for 1hr.During this time, the dry nitrogen can diffuse throughout thesystem absorbing moisture.
5. Pump the system down to 1000 microns.6. Break the vacuum with dry nitrogen (2 psig).
7. Pump the system down to 500 microns.
8. Perform the hold test for 30 minutes.
CHECK FOR TIGHT, DRY SYSTEM(IF IT HOLDS DEEP VACUUM)
EVACUATE TO 1500 MICRONS
EVACUATE TO 500 MICRONS MINIMUM (HOLD FOR 30 MINUTES)
RELEASE CHARGE INTO SYSTEM BY OPENING VALVES COMPLETELY
BREAK VACUUM WITH DRY NITROGEN TO 2 PSIG
EVACUATE TO 1000 MICRONS
BREAK VACUUM WITH DRY NITROGEN TO 2 PSIG
Fig. 15 - Triple Evacuation Method
Final Tubing CheckIMPORTANT: Check to be certain factory tubing on both indoorand outdoor unit has not shifted during shipment. Ensure tubes arenot rubbing against each other or any sheet metal. Pay closeattention to feeder tubes, making sure wire ties on feeder tubes aresecure and tight.
32808001101 17Specifications subject to change without notice.
ELECTRONIC FUNCTIONSAbbreviation
T1: Indoor room temperatureT2: Coil temperature of evaporator
T3: Coil temperature of condenserT4: Outdoor ambient temperature
T5: Compressor discharge temperatureDisplay function
Icon explanation on indoor display board
Fig. 16 - Digital display Displays the temperature settings when the air conditioner is
operational.
Displays the room temperature in FAN mode.
Displays the self−diagnostic codes.
Displays for three seconds when Timer ON, Fresh,Swing, Turbo or Silence feature is activated.
Displays for three seconds when Fresh, Swing, Turbo, orSilence feature is cancelled.
Displays under defrosting operation.
Displays when anti−cold air feature is activated underheating mode.
Displays during self clean operation (if applicable).
Displays under 8°C heating operation (if applicable).
When ECO function (optional) is activated, the illuminates gradually one by one as
in one second intervals.
Fig. 17 - WIFI control display (optional)
Displays when the WIFI control feature is activated (Notavailable on some units).NOTE: A guide on using the infrared remote is not includedin this literature package.
Main ProtectionThree minute delay for compressor restart
Less than a 1 minute delay for the initial startup and a 3 minute delayfor subsequent starts.
Compressor top temperature protectionThe unit stops working when the compressor top temperature protectorcuts off, and restarts after the compressor top temperatrue protectorrestarts.
Compressor discharge temperature protectionCompressor discharge temp. T5>239F(115C) for 5s, compressorstops.Fan Speed is Out of Control
When the indoor fan speed remains too low (300RPM) the unit stopsand the LED displays the failure.
Inverter module protectionThe inverter module has a protection function for current, voltage andtemperature. If any of these protections engage, the correspondingcode displays on the indoor unit and the unit stops working.Compressor preheating functions
Preheating permitting condition: When the T4 (outdoor ambienttemperature)<37.4F (3C), the preheating function engages.Zero Crossing Detection Error Protection
If the AC detects that the time interval is not correct for a continuousperiod of 240s, the unit stops and the LED displays the failure. The correctzero crossing signal time interval should be between 6−13ms.
Sensor Protection at Open Circuit and Breaking Disconnection
When there is only one malfunctioning temperature sensor, the airconditioner keeps working yet displays the error code, in case of anyemergency use. When there is more than one malfunctioningtemperature sensor, the air conditioner stops working.Refrigerant leakage detection
This function is only active in the COOLING mode. The functionhelps prevent the compressor from being damaged by a refrigerantleakage or a compressor overload.Open condition:When the compressor is active, the evaporator T2 coil temperaturevalue has no or very little change.
Operation Modes and FunctionsFAN Mode
1. Outdoor fan and compressor stop
2. Temperature setting function is disabled, and no settingtemperature is displayed.
3. Indoor fan can be set to high/med/low/auto4. The louver operates the same in the COOLING mode.
5. Auto fan
18 32808001101Specifications subject to change without notice.
Fig. 18 - Auto FanCOOLING Mode
Compressor Running Rules:
When T1Ts < 28.4F(2C), the compressor stops.
When T1TS > 31.1F(0.5C), the compressor activates.
When the AC runs in the mute mode, the compressor runswith low frequency.
When the current is more than setting value, the currentprotection function activates, and the compressor stops.
Outdoor Fan Running Rules:
The outdoor unit runs at a different fan speed according to T4. Fordifferent outdoor units, the fan speeds differ.
Fig. 19 - Outdoor Fan Running Rules
The auto fan adheres to the following rules.
Fig. 20 - Auto Fan
Fig. 21 - Compressor Temperature Protection
When the condenser temperature temperature is higher than the settingvalue, the compressor stops.
Compressor Running RulesWhen T1−Ts>−ΔT, the compressor stops, when T1−TS<ΔT−1.5,thecompressor will be on. ΔT is the programmed parameter oftemperature compensation. When the AC run in mute mode, thecompressor runs with low frequency.
When the current is more than setting value, the current protectionfunction is activated and the compressor stops.
Outdoor Fan Running RulesThe outdoor unit runs at different fan speed according to T4. Fordifferent outdoor units, the fan speeds are different.
Fig. 22 - Outdoor Fan Running Rules
Auto Fan Action in HEATING Mode
32808001101 19Specifications subject to change without notice.
a
b
c
d
T1
e
Fig. 23 - Auto Fan Action in HEATING Mode
DEFROST ModeThe air conditioner enters the DEFROST mode according to the T3temperature value and the T3 temperature change value range plus thecompressor running time.
During the DEFROST mode, the compressor continues to runs, theindoor and outdoor motors stop, and the indoor unit defrost lamp
illuminates and appears.
If any one of the following items is satisfied, the defrosting finishes andthe machine reverts to the normal heating mode.
−−−−T3 rises to be higher than TCDE1C.−−−−T3 keeps to be higher than TCDE2C for 80 seconds.−−−−The machine has run for 15 minutes in defrosting mode.
Evaporator Coil Temperature Protection
TEstop
T2
Resume
Off
DecreaseTEdown
TEH2Hold
Fig. 24 - Evaporator Coil Temperature ProtectionNOTE: The following applies to Fig. 24:
Off: Compressor stops
Decrease: Decrease the running frequency to the lower level
Hold: Keep the current frequency
Resume: No limitation for frequency
When the evaporator temperature is higher than the setting protectionvalue, the compressor stops.
Auto−ModeThis mode can be chosen with the remote controller and the settingtemperature can be changed between 62.6F(17C)~86F(30C).In the AUTO mode, the machine chooses the COOLING, HEATINGor FAN−ONLY mode according to ΔT (ΔT =T1−Ts).
Table 8—Auto Mode
ΔT=T1-Ts Running mode
ΔT>2 Cooling
-2≤ΔT≤2 Fan-only
ΔT<-2 Heating
The indoor fan runs under auto fan in the relevant mode. The louveroperates same as in relevant mode. If the machine switches modebetween HEATING and COOLING, the compressor stops for 15minutes and then chooses the mode according to T1−Ts. If the settingtemperature is modified, the machine chooses the running functionagain.DRY mode
Indoor fan speed is fixed at breeze and can not be changed.
The louver angle is the same as in the cooling mode.Low indoor room temperature protection
In the DRYING mode, if the room temperature is lower than 50F(10C), the compressor stops and does not resume until the roomtemperature exceeds 53.6F (12C).Evaporator antifreezing protection, condenser high temperatureprotection and outdoor unit frequency limit are active and are the sameas that in the cooling mode. The outdoor fan operates the same as incooling mode.
Forced Operation Function
Enter forced operation function: When the machine is off,press Touch to engage the the Forced Auto Mode. PressTouch again, within 5 seconds, to engage the Forced CoolingMode. In Forced Auto, forced cooling or any other operationmode, press the touch button to turn off the unit. In the forcedoperation mode, all general protections and remote controlare available.
Operation rules:
Forced cooling mode: The compressor runs at the F2frequency and the indoor fan runs as a breeze. After runningfor 30 minutes, the unit enters the auto mode as 75.2F(24C) setting temperature.
Forced auto mode: The forced auto mode is the same as thenormal auto mode with a 75.2F (24C) setting temperature.
AUTO−RESTART Function
The indoor unit is equipped with the AUTO−RESTART function,which is carried out through an auto−restart module. In the event of asudden power failure, the module memorizes the setting conditionsprior to the power failure. The unit resumes the previous operationsetting (not including the SWING function) automatically three (3)minutes after the power returns.If the memorization condition is the FORCED COOLING mode, theunit will run in the COOLING mode for 30 minutes and turn to theAUTO mode at the 75.2F(24C) setting temperature.If the air conditioner is off before the power turns off and the airconditioner is required to start up, the compressor delays start up for 1minute before powering on. In other instances, the compressor waitsthree (3) minutes before restarts.
20 32808001101Specifications subject to change without notice.
Refrigerant Leak Detection
With this new technology, the display area displays “EC” when theoutdoor unit detects a refrigerant leak. This function is only active incooling mode. It can better prevent the compressor being damaged byrefrigerant leakage or compressor overload.
Open Condition: When the compressor is active, the value of the Coiltemperature of evaporator T2 has no change or very little change.46F (8C) Heating
When the compressor is running, the indoor fan motor runs without theANTI−COLD air function. When the compressor is off, the indoor fanmotor is off.
Point Check FunctionPress the remote controller’s LED DISPLAY or LED or MUTE button three times, and then press the AIR DIRECTION or SWING button threetimes in ten seconds, the buzzer rings for two seconds. The air conditioner enters into the information enquiry status.Press the LED DISPLAY or AIR DIRECTION button to check the next or front item’s information.When the air conditioner enters the information enquiry status, it displays the code name in 2 seconds (see Table 9).
Table 9—Information EnquiryENQUIRY INFORMATION DISPLAYING CODE MEANING
T1 T1 T1 temp.
T2 T2 T2 temp.
T3 T3 T3 temp.
T4 T4 T4 temp.
T2B Tb T2B temp.
TP TP TP temp.
TH TH TH temp.
Targeted Frequency FT Targeted Frequency
Actual Frequency Fr Actual Frequency
Indoor Fan Speed IF Indoor fan speed
Outdoor Fan Speed OF Outdoor fan speed
EXV Opening Angle LA EXV opening angle
Compressor continuous running time CT Compressor continuous running time
Compressor stop causes ST Compressor stop causes
Reserve A0
Reserve A1
Reserve b0
Reserve b1
Reserve b2
Reserve b3
Reserve b4
Reserve b5
Reserve b6
Reserve dL
Reserve Ac
Reserve Uo
Reserve Td
32808001101 21Specifications subject to change without notice.
When the air conditioner enters the information enquiry status, it displays the code value for 25 seconds (see Table 10).
Table 10—Information EnquiryENQUIRY
INFORMATIONDISPLAY VALUE MEANING REMARK
T1,T2,T3,T4,T2B,TP,TH,
TargetedFrequency,
ActualFrequency
-1F,-1E,-1d,-1c,-1b,-1A
-25,-24,-23,-22,-21,-201. The displaying temperature is the actual value.
2. The temperature is C no matter what kind of remote controller is used.3. T1,T2,T3,T4,T2B display range:-25~70, TP displayrange:-20~130.4. Frequency display range: 0~159HZ.5. If the actual value exceeds the range, it displays themaximum value or minimum value.
-19—99 -19—99
A0,A1,…A9 100,101,…109
b0,b1,…b9 110,111,…119
c0,c1,…c9 120,121,…129
d0,d1,…d9 130,131,…139
E0,E1,…E9 140,141,…149
F0,F1,…F9 150,151,…159
Indoor fan speed/Outdoor fan speed
0 OFF
1,2,3,4Low speed, Medium speed, High
speed, TurboFor some big capacity motors.
14-FFActual fan speed = Display valueturns to decimal value and then
multiply 10. The unit is RPM.
For some small capacity motors, the display value is from 14-FF(hexadecimal), the corresponding fan speed range
is from 200-2550 RPM.
EXV opening angle 0-FFActual EXV opening value =
Display value turns to decimalvalue and then multiply 2.
Compressorcontinuous running
time0-FF 0-255 minutes
If the actual value exceeds the range, it displays themaximum value or minimum value.
Compressor stopcauses
0-99For the detailed meaning, please
consult with engineerDecimal display
Reserve 0-FF
22 32808001101Specifications subject to change without notice.
TROUBLESHOOTING
SafetyElectricity power is kept in capacitors even if the power supply is shut off.
NOTE: Remember to discharge the electricity power in capacitor.
Electrolytic Capacitors
(HIGH VOLTAGE! CAUTION!)
Fig. 25 - Electrolytic Capacitors
For other models, please connect discharge resistance (approximately 100Ω 40W) or a soldering iron (plug) between the +, − terminals of theelectrolytic capacitor on the contrary side of the outdoor PCB.
Fig. 26 - Discharge Position
NOTE: Fig. 26 is for reference only. The plug on your unit may differ.
32808001101 23Specifications subject to change without notice.
OUTDOOR UNIT DIAGNOSTIC GUIDES
Table 11—Diagnostic GuidesOPERATION LAMP TIMER LAMP DISPLAY LED STATUS
1 time X E0 Indoor unit EEPROM parameter error
2 times X E1 Indoor / outdoor units communication error
3 times X E2 Zero-crossing signal detection error
4 times X E3 Indoor fan speed has been out of control
5 times X E4 Indoor room temperature sensor T1 open circuit or short circuit
6 times X E5 Evaporator coil temperature sensor T2 open circuit or short circuit
7 times X EC Refrigerant leakage detection
1 time O F0 Overload current protection
2 times O F1 Outdoor ambient temperature sensor T4 open circuit or short circuit
3 times O F2 Condenser coil temperature sensor T3 open circuit or short circuit
4 times O F3 Compressor discharge temperature sensor T5 open circuit or short circuit
5 times O F4 Outdoor unit EEPROM parameter error
6 times O F5 Outdoor fan speed has been out of control
1 time P0 IPM malfunction or IGBT over-strong current protection
2 times P1 Over voltage or over low voltage protection
3 times P2 High temperature protection of IPM module or compressor top
4 times P3* Outdoor ambient temperature too low.
5 times P4 Inverter compressor drive error
6 times P5 Indoor units mode conflict (multi-zone ONLY)
O(light) X(off) (flash)
24 32808001101Specifications subject to change without notice.
PCB DIAGRAMS
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R2530.75 ¦,/1W
R2540.75 ¦,/1Wconnect to compressor heaterwhen is on, 100−130V AC output
connect to 4−way Valvewhen is on, 100−130VAC OUTPUT
connect to PFC Capacitorwhen is on, 100−130V ACoutput
connect to reactorwhen is on, 100−130V AC output
connect toGround
connect to N−line(100−130VAC INPUT)
connect to L−line(100−130VAC INPUT)
connect to indoor unitcommunication
UV
W
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0VAC (standby)
connect to DC Motor
external driver motor
connect to Electric Expansion Valve
pipe temp.sensor& room temp.sensor&Exaust temp. sensor
6 5 4 3 2 1TP T4 T3
RT
RT+5V
DC
RT
+5V
DC
+5V
DC
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+12V DC pulse wave between (+2)−GND+12V DC pulse wave between (+3)−GND
+12V DC pulse wave between (+4)−GND
+12V DC+12V DC
6 5
4 3
2 1
AC fan motor5432
1low speed
N linehigh speed
FAN Starting Capacitor
FAN Starting Capacitor
connect to chassis heaterwhen is on, 100−130VAC OUTPUT
UVW
0VA
C(standby)
10−230VA
C¡¯(running)
connect tocom
pressor
connect to PCcommunication
EEPROM ProgrammerPort
Test Port
bridge
IPM for compressor
IPM for DC FAN
P
Fig. 27 - Size 12k (115V)
+
T4TPT3
N
L
H
NN
RdiHave
Low−Fre
YESNO
No
U
BLUE
VRE
D
WBL
AC
K
TESTPORT
PMV
DC
−FA
N
DR_L
DR_N
Ear
th
HEAT2
AC
−FA
N4−
WA
YH
EA
T1
S
7805
N−
INL
−IN
KFR−35W/BP3N1−(RX62T+41560).D.13.WP2−1 [1.8] 2015−12−31
1 1
17122000002718
1
E304E208
C10
RC3
CN22
ZR4
R696R69
5
C696
C69
5
ZR5
C9
IPM
501
L1
C8
CN
60
+
IC405
DAS1
RC2
ON
21
ON
433
41 2
SW2
RY5
R23R21
CN
17
CN11
CN10
C135
L5L4L3L2
+DZ201
L601
CN16
CN1
CN2
CN3
CN3_1
C61
3
IC103
CN507
+
D403
IC404
CN1A
FUSE1T20A/250VAC
E405
E410
RY4
IC104
IC101
R10
4
R60
4
R156
C27
5
DZ204 R17
2
R195
C11
7
R103
R401
D10
4
E409
PTC1
CN32
BR1
E407
E404 E283
+ E282+E281
+
E280
RY1
D60
1
Q601
C2
C3
C4
C5
C6
C7
C11
C16
C102
C103C104C105
C106 C11
1
C112
C113
C11
4
C115
C116
C118
C11
9
C120C121
C12
3C
124
C125
C126
C127C128C129C130C131
C132
C13
3
C271C272
C273
C274
C302
C30
3
C30
5
C312 C322
C401
C402
C404
C405
C408
C409
C41
0
C50
3C
504
C50
5C
506C
507
C50
8
C50
9
C60
1
C605
C606
C612
C614
C615
CN
7
CN9
CN31
CN505
D1D2
D402D406
DZ202
DZ203
DZ301DZ302DZ303DZ304
DZ601
E1
E2
E101
E102
E103
E105
E107
E108
E401
E602
IC1
IC401IC403
IC60
1
IC602
IC60
3
LED101
NT
C2
OSC101
Q101
R2
R3
R10
1
R102
R105
R106
R107
R108
R11
0
R111R112
R11
4
R11
5
R11
6R
117
R12
0R
121
R124R125R126R127
R12
8
R129
R130R131
R13
2
R133
R13
5R
136
R13
7R
138
R140R142
R143
R144
R147R148R149
R150R152
R154R155
R15
7
R16
5
R16
8R
169
R17
0
R173
R174
R17
8
R17
9 R180R181
R18
2
R185R186R187
R188
R189
R19
0
R301
R315
R403
R40
4
R405
R406R407
R408
R42
7R
428
R42
9
R502R504
R506R508
R51
3
R516
R52
8
R60
1
R60
3
R605
R607
R608R610R611R612
R615
R616R617
R618
R61
9
R62
0
R626
RY2
ZR1
CN6
D401
D404
Rdi
IC102
D60
2 R17
1
C611
D101
C101
E106
C1
C520
ZR3
CN30
CN
29C
N28
C30
7C
308 C
309
C31
0
C311R303
R304R305
R306R314
R42
6
C32
0
C321
C32
3
C511C512
C513
IC301
R31
7R
318
R31
9R
320
R32
1
R32
2
R323
R51
7R
518
R519
R52
0
R521
R52
2
R52
3
CN50
E206
E605
C134
C314C316
C31
8
CN
25
D610
R196
RY3C62
4
R60
2 R623
C110C122
D407
R31
6
3W− 10m|??¨¤1%
R409
R410
R606
3W−
10m
1%
T401
C10
7
E109
R17
5R
176
IPM301
C31
9C30
6
C413
D103
R62
1
R421
IC2
C324
R122
R123
R11
8
C618R628
CN
15
IC105
R191
RY3A
ZR2
RC1
CN21
R1
C412
E30
0
E30
2
E30
3
C33
0
C33
1
C33
2
C333C334
connect to the terminal208−230V ACpower supply
connect to earth
CN60connect to 4−way valve
when 4−way is ON, output 208−230VAC
connect to compressor heater
power supply
CN17
AC fan motor
L low speed
N ground
H high speed
CN21/CN22exhaust temp. sensor& pipetemp.sensor& room temp.sensor
6 5 4 3 2 1TP T4 T3
RT
RT
+5V
DC
RT
+5V
DC
+5V
DC
connect to Electric Expansion Valve
+12
V D
C p
ulse
wav
e be
twee
n (+
1)−
GN
D+
12V
DC
pul
se w
ave
betw
een
(+2)
−G
ND
+12
V D
C p
ulse
wav
e be
twee
n (+
3)−
GN
D+
12V
DC
pul
se w
ave
betw
een
(+4)
−G
ND
+12
V D
C+
12V
DC
6 5 4 3 2 1
connect to indoor unit communication
HEAT2connect to chassis heaterwhen is on, 208−230VAC OUTPUT
U
V
W
10−200VAC¡¯ (running)
0VAC (standby)
connect to the DC compressor
Test PortConnect to PCcommunication EEPROM Programmer Port
FUSE1 20A/250VACConnect to DR module
U
V
W
10−200VAC¡¯ (running)
0VAC (standby)
connect to DC Motor
External driver motor
LED101 status light (Red)slow flicker:standby( 0.5Hz)quick flicker:error( 2Hz)continuous light: normally running
Connect to reactor
IPM for
compressor
IGBT
FRD
when heater is ON, output 208−230V AC
BR
P
N
Fig. 28 - Size 09k−12k (208−230V)
32808001101 25Specifications subject to change without notice.
PCB DIAGRAMS (CONT)
Fig. 29 - Sizes 18k−24k (208−230V)
NOTE: After power on, LED3(Green color) and LED2(Red color) will flash if the unit has some problems.
Table 12—LED Codes
No. ProblemsLED3
(Green)LED2(Red)
IU display
1 Standby for normal O X
2 Operation normally X O
3 IPM malfunction or IGBT over-strong current protection X P0
4 Over voltage or too low voltage protection O O P1
5 EEPROM parameter error O E5
6 Inverter compressor drive error X P4
7 Inverter compressor drive error O P4
8 Inverter compressor drive error P4
O(light) X(off) (2.5Hz flash)
26 32808001101Specifications subject to change without notice.
DIAGNOSIS AND SOLUTIONEEPROM Parameter Error Diagnosis and Solution (E0/F4)
Error Code E0/F4
Malfunction decision conditions Indoor or outdoor PCB main chip does not receive feedback from the EEPROM chip.
Supposed causes Installation mistake
PCB faulty
Troubleshooting
Yes
Replace the indoor/outdoormain PCB.
Power off, then restart the unit 2 minutes later.
EEPROM: A read−only memory whose contents can be erased and reprogrammed using a pulsed voltage. For the EEPROM chip location, pleaserefer to Fig 30 and Fig. 31.
Fig. 30 - Indoor PCB
Fig. 31 - Outdoor PCB
NOTE: The two pictures above are for reference only and they may differ from the actual unit.
32808001101 27Specifications subject to change without notice.
DIAGNOSIS AND SOLUTION (CONT)Indoor / outdoor unit’s communication diagnosis and solution (E1)
Error Code E1
Malfunction Decision ConditionsIndoor unit does not receive the feedback from outdoor unit during 110 seconds and this conditionhappens four times continuously.
Supposed Causes Wiring mistake
Indoor or outdoor PCB faulty
Troubleshooting
Measure Vs., is it a positive fluctuation?(Vs represents the voltage S and N of theoutdoor unit. Red pan-S, Black pan-N)
Power off, then restart the unit 2 minutes later
Replace the indoor main PCB.Power on. Is the error resolved?
No
Check the indoor wiring connectionYes
Check whether thereactor is normal
Yes
No
Check the outdoor wiring connection
Replace the reactor
Yes
Replace the outdoor main PCB.Power on. Is the error resolved?
Replace the indoor main PCB
No
Replace the outdoor main PCB.
Yes
No
Yes
Yes
28 32808001101Specifications subject to change without notice.
DIAGNOSIS AND SOLUTION (CONT)
Fig. 32 - Test the DC VoltageUse a multimeter to test the DC voltage between L2 port and S port of the outdoor unit. The red pin of the multimeter connects with the L2 port whilethe black pin is for the S port. When air conditioner is running normal, the voltage moves alternately between −50V to 50V. If the outdoor unit has amalfunction, the voltage will move alternately with positive value. If the indoor unit has malfunction, the voltage will have a certain value.
Fig. 33 - Test the Reactor Resistance
Use a multimeter to test the resistance of the reactor which does not connect with the capacitor. The normal value should be around zero (0) ohm.Otherwise, the reactor has a malfunction and needs to be replaced.
32808001101 29Specifications subject to change without notice.
DIAGNOSIS AND SOLUTION (CONT)Zero crossing detection error diagnosis and solution (E2)
Error Code E2
Malfunction decision conditionsWhen the PCB does not receive a zero crossing signal feedback for 4 minutes or the zero crossing signaltime interval is abnormal.
Supposed causes Connection mistake
PCB faulty
Troubleshooting
Check if the connections andpower supply are normal.
Correct the connections. Turn on the unit when the power supply is good.No
Yes
Indoor main PCB is defective. Replace indoor
main PCB.
30 32808001101Specifications subject to change without notice.
DIAGNOSIS AND SOLUTION (CONT)Fan speed has been out of control diagnosis and solution (E3/F5)
Error Code E3/F5
Malfunction decision conditionsWhen indoor fan speed remains too low (300RPM) for certain time, the unit stops and the LED displaysthe failure.
Supposed causes
Wiring mistake
Fan assembly faulty
Fan motor faulty
PCB faulty
Troubleshooting
Power off, then restart the unit 2 minutes later
Shut off the power supply,Rotate the fan by hand.
The unit operates normally.
Find the cause and resolve it.
Check the fan motor wiring
No
Yes
No
Correct the connections.No
NoReplace the fan motor
Yes
Yes
Measure the voltage for the fan motor from the main
PCB
Yes
Replace the main PCBNo
32808001101 31Specifications subject to change without notice.
DIAGNOSIS AND SOLUTION (CONT)Index 1
1. Indoor or Outdoor DC Fan Motor (control chip is in fan motor)
Power on and when the unit is in standby, measure the voltage of pin1−pin3, pin4−pin3 in fan motor connector. If the voltage value is not inthe range shown in Table 13 or Table 14, the PCB has an issue and needs to be replaced.
Fig. 34 - Motor Connector
Table 13—DC motor voltage input and output (voltage: 220−240V~)NO. COLOR SIGNAL VOLTAGE
1 Red Vs/Vm 280V~380V
2 --- --- ---
3 Black GND 0V
4 White Vcc 14-17.5V
5 Yellow Vsp 0~5.6V
6 Blue FG 14-17.5V
Table 14—DC motor voltage input and output (voltage : 115V~)NO. COLOR SIGNAL VOLTAGE
1 Red Vs/Vm 140V~190V
2 --- --- ---
3 Black GND 0V
4 White Vcc 14-17.5V
5 Yellow Vsp 0~5.6V
6 Blue FG 14-17.5V
2. Outdoor DC Fan Motor (control chip is in the outdoor PCB)Power on the unit and check if the fan runs normally. If the fan runs normally, the PCB has an issue and needs to be replaced. If the fan doesnot run normally, measure the resistance of each two pins. If the resistance is not equal to each other, the fan motor has an issue and needs to bereplaced, otherwise the PCB has an issue and needs to be replaced.
3. Indoor AC Fan Motor
Power on the unit and set the unit in FAN mode at the high fan speed. Run for 15 seconds then measure the voltage of pin1 and pin2. If thevoltage value is less than 100V(208~240V power supply) or 50V(115V power supply), the PCB has an issue and needs to be replaced.
32 32808001101Specifications subject to change without notice.
DIAGNOSIS AND SOLUTION (CONT)Open circuit or short circuit of temperature sensor diagnosis and solution (E4/E5/F1/F2/F3)
Error Code E4/E5/F1/F2/F3
Malfunction decision conditions If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED displays the failure.
Supposed causes
Wiring mistake
Sensor faulty
PCB faulty
Troubleshooting
Check the connection between the temperature
sensor and PCB.Correct the connectionNo
Yes
Replace indoor or outdoor main PCB
Measure the resistance value of the sensor Replace the sensorNo
Yes
Fig. 35 - Check the connection
32808001101 33Specifications subject to change without notice.
DIAGNOSIS AND SOLUTION (CONT)Refrigerant Leakage Detection diagnosis and solution (EC)
Error Code EC
Malfunction decision conditions
Define the evaporator coil temp.T2 of the compressor. It starts running in Tcool.
At first, 5 minutes after the compressor starts up, if T2 <Tcool-35.6F (Tcool-2 C) does not run for 4seconds and this situation occurs 3 times, the display area displays“EC”and the air conditioner willturn off.
Supposed causes
T2 sensor faulty
Indoor PCB faulty
System problems, such as leakage or blocking.
Troubleshooting
Check cool air blowing out from indoor air outlet
Yes
Yes
No
Check for system leaks
No
Power off, then restart the unit 2 minutes later.
Replace indoor PCB.
Yes
Repair the leakage and recharge the refrigerant.
Yes
Check for system blocking andclear the block
Check the T2 sensor
34 32808001101Specifications subject to change without notice.
DIAGNOSIS AND SOLUTION (CONT)Overload current protection diagnosis and solution (F0)
Error Code F0
Malfunction decision conditions An abnormal current rise is detected by checking the specified current detection circuit.
Supposed causes
Power supply problems
System blockage
PCB faulty
Wiring mistake
Compressor malfunction
Troubleshooting
Check the power supply
Check the connections and wires
Stop the unitNo
Yes
No Correct the connections or replace the wires.
Yes
Replace the outdoor unit
Yes
Check the reactor No Replace outdoor main PCB
Check for system blockage
Yes
No Clear the blockage
Check the compressor resistance values
Yes
No Replace the compressor
32808001101 35Specifications subject to change without notice.
DIAGNOSIS AND SOLUTION (CONT)IPM malfunction or IGBT over−strong current protection diagnosis and solution (P0)
Error Code P0
Malfunction decision conditionsWhen the voltage signal, that the IPM sends to the compressor drive chip is abnormal, the display LEDdisplays P0”and the air conditioner turns off.
Supposed causes
Wiring mistake
IPM malfunction
Outdoor fan assembly faulty
Compressor malfunction
Outdoor PCB faulty
Troubleshooting
Check the wiring between main thePCB and the compressor
Correct the connection or replace the wires and connectors.Yes
No
Check the IPM No
Yes
Replace the IPM board or replace the main PCB
Check the outdoor fan and the outdoor unit ventilation No
Please refer to the solution of FanSpeed Has Been Out Of Control
malfunction
Yes
Check the compressor resistance values No Replace the compressor.
Yes
Replace the outdoor main PCB
36 32808001101Specifications subject to change without notice.
DIAGNOSIS AND SOLUTION (CONT)
Fig. 36 - P−U
Fig. 37 - P−V
32808001101 37Specifications subject to change without notice.
DIAGNOSIS AND SOLUTION (CONT)
Fig. 38 - P−W
Fig. 39 - N−U
38 32808001101Specifications subject to change without notice.
DIAGNOSIS AND SOLUTION (CONT)
Fig. 40 - N−V
Fig. 41 - N−W
32808001101 39Specifications subject to change without notice.
DIAGNOSIS AND SOLUTION (CONT)Over voltage or too low voltage protection diagnosis and solution (P1)
Error Code P1
Malfunction decision conditions An abnormal voltage rise or drop is detected by checking the specified voltage detection circuit.
Supposed causes
Power supply problems
System leakage or block
PCB faulty
Troubleshooting
Check the power supply
Check the connections and wires
Stop the unitNo
Yes
No Correct the connections or replace the wires.
Yes
Replace the reactor
Yes
No Replace the IPM boardCheck the voltage between P
and N
Check the reactor
Yes
No Replace outdoor main PCB
Fig. 42 - Test
NOTE: Measure the DC voltage between the P and N port. The normal value should be around 310V.
40 32808001101Specifications subject to change without notice.
DIAGNOSIS AND SOLUTION (CONT)High temperature protection of compressor top diagnosis and solution (P2)
Error Code P2
Malfunction decision conditions If the sampling voltage is not 5V, the LED displays the failure.
Supposed causes
Power supply problems
System leakage or block
PCB faulty
Troubleshooting
Yes
Tighten the screws and apply silicon grease.
Replace the outdoor control PCB.
No
Check if the Fastening screws on the PCB and IPM radiator
are fixed tightly.
For other models,
32808001101 41Specifications subject to change without notice.
DIAGNOSIS AND SOLUTION (CONT)Inverter compressor drive error diagnosis and solution (P4)
Error Code P4
Malfunction decision conditionsAn abnormal inverter compressor drive is detected by a special detection circuit, including communicationsignal detection, voltage detection, compressor rotation speed signal detection, etc.
Supposed causes
Wiring mistake
IPM malfunction
Outdoor fan assembly faulty
Compressor malfunction
Outdoor PCB faulty
Troubleshooting
Check the wiring between main PCB and compressor
Correct the connection or replace the wires and connectors.Yes
No
Check the IPM No
Yes
Replace the IPM board or replace the main PCB
Check the outdoor fan and the outdoor unit ventilation No
Please refer to the solution of FanSpeed Has Been Out Of Control
malfunction
Yes
Check the compressor resistance values No Replace the compressor.
Yes
Replace the outdoor main PCB
42 32808001101Specifications subject to change without notice.
DIAGNOSIS AND SOLUTION (CONT)Main Parts CheckTemperature Sensor CheckingDisconnect the temperature sensor from the PCB, measure the resistance value with a tester.
Fig. 43 - Tester
Temperature sensors.Room temp.(T1) sensor,
Indoor coil temp.(T2) sensor,Outdoor coil temp.(T3) sensor,Outdoor ambient temp.(T4) sensor,
Compressor discharge temp.(T5) sensor.Measure the resistance value of each winding by using the multi−meter.
32808001101 43Specifications subject to change without notice.
DIAGNOSIS AND SOLUTION (CONT)Compressor CheckingMeasure the resistance value of each winding by using the tester.
Fig. 44 - Tester
Table 15—Compressor CheckingPosition Resistance Value
ASN98D22UFZ ASM135D23UFZ ATF235D22UMT ATF250D22UMT
Blue - Red
1.57Ω 1.75 Ω 0.75 Ω 0.75 ΩBlue - Black
Red - Blue
Fig. 45 - Compressor Checking
44 32808001101Specifications subject to change without notice.
DIAGNOSIS AND SOLUTION (CONT)IPM Continuity CheckTurn off the power, let the large capacity electrolytic capacitors discharge completely, and dismount the IPM. Use a digital tester to measure theresistance between P and UVWN; UVW and N.
Table 16—IPM Continuity CheckDigital Tester Normal Resistance Value Digital Tester Normal Resistance Value
(+)Red (-)Black
∞(Several MΩ)
(+)Red (-)Black
∞(Several MΩ)P
N U
NU V
V W
W (+)Red
Fan MotorMeasure the resistance value of each winding by using the tester.
Table 17—Fan MotorModel YKT-32-6-202L YKT-32-6-3L YKT-48-6-206 YKT-63-6-200L
Brand Tongde Welling Welling WellingBlack – RedMain
Ω 86 213 152 88.5
Blue –BlackAUX
Ω 64 156 142 138
32808001101 45Specifications subject to change without notice.
Pressure on Service Port
Table 18—Cooling Chart
°F (°C ) ODT/IDT75
(23.89)85
(29.44)95
(35)105
(40.56)115
(46.11)
BAR 70/59 8.2 7.8 8.1 8.6 10.1
BAR 75/63 8.6 8.3 8.7 9.1 10.7
BAR 80/67 9.3 8.9 9.1 9.6 11.2
°F (°C ) ODT/IDT75
(23.89)85
(29.44)95
(35)105
(40.56)115
(46.11)
PSI 70/59 119 113 117 125 147
PSI 75/63 124 120 126 132 155
PSI 80/67 135 129 132 140 162
°F (°C ) ODT/IDT75
(23.89)85
(29.44)95
(35)105
(40.56)115
(46.11)
MPA 70/59 0.82 0.78 0.81 0.86 1.01
MPA 75/63 0.86 0.83 0.87 0.91 1.07
MPA 80/67 0.93 0.89 0.91 0.96 1.12
Fig. 46 - Cooling Chart
46 32808001101Specifications subject to change without notice.
Pressure on Service Port (Cont)
Table 19—Heating Chart
°F (°C ) ODT/IDT57/53
(13.89/11.67)47/43
(8.33/6.11)37/33
(2.78/0.56)27/23
(-2.78/-5)17/13
(-8.33/-10.56)
BAR 55 30.3 28.5 25.3 22.8 20.8
BAR 65 32.5 30.0 26.6 25.4 23.3
BAR 75 33.8 31.5 27.8 26.3 24.9
°F (°C ) ODT/IDT57/53
(13.89/11.67)47/43
(8.33/6.11)37/33
(2.78/0.56)27/23
(-2.78/-5)17/13
(-8.33/-10.56)
PSI 55 439 413 367 330 302
PSI 65 471 435 386 368 339
PSI 75 489 457 403 381 362
°F (°C ) ODT/IDT57/53
(13.89/11.67)47/43
(8.33/6.11)37/33
(2.78/0.56)27/23
(-2.78/-5)17/13
(-8.33/-10.56)
MPA 55 3.03 2.85 2.53 2.28 2.08
MPA 65 3.25 3.00 2.66 2.54 2.33
MPA 75 3.38 3.15 2.78 2.63 2.49
Fig. 47 - Heating Chart
32808001101 47Specifications subject to change without notice.
DISASSEMBLY INSTRUCTIONS SIZES 12K (115V)
1 Panel plate How to remove the panel plate.
1. Stop the air conditioner and turn “OFF” the power breaker.
2. Remove the big handle first, and then removethe top cover (3 screws).
3. Remove the front panelscrews (7).
4. Remove the right side panel screws (11).
2
4
3
3
Front panel screws (7)
Top panel screws (3), 1 screws is under the big handle
Big handle
(3 screws)
48 32808001101Specifications subject to change without notice.
DISASSEMBLY INSTRUCTIONS SIZES 12K (115V) (CONT)
2 Fan assembly
How to remove the fan assembly.
1) Remove the nut securing the fan, and remove the fan.
2) After removing the top cover, release the hooks and open the electronic control box cover.
3) Disconnect the fan motor connector from the electronic control board.
2
3
Compressor
T3, T4, T5 sensor
Motor
Electronic expansion valve
4 way valve
32808001101 49Specifications subject to change without notice.
DISASSEMBLY INSTRUCTIONS SIZES 12K (115V) (CONT)
5
4) Remove the fan motor screws (4) then remove the motor.
50 32808001101Specifications subject to change without notice.
DISASSEMBLY INSTRUCTIONS SIZES 12K (115V) (CONT)3 Electrical
partsHow to remove the electrical parts.
1) After you complete the steps in item 1 and 2, remove the compressorconnector.
2) Pull out the two bluewires connected to the four way valve.
3) Pull out connectors ofthe condenser coil temp. sensor (T3),outdoor ambient temp. sensor (T4) and discharge temp. sensor(T5).
1
2
3
32808001101 51Specifications subject to change without notice.
DISASSEMBLY INSTRUCTIONS SIZES 12K (115V) (CONT)
4) Disconnect theelectronic expansion valve wire from the control board.
5) Remove the ground wires.
6) Remove the wires(1,2,3).
7) Remove the electronic control box.
5
6
52 32808001101Specifications subject to change without notice.
DISASSEMBLY INSTRUCTIONS SIZES 12K (115V) (CONT)
4 Four-way valve
How to remove the four-way valve.1) Perform the work of
sections 1 and 3.
2) Recover refrigerant from the refrigerant circuit.
3) Remove the coil screwthen remove the coil.
4) Detach the welded parts of the four-way valve and pipe.
5) Remove the four-way valve assembly.
The picture of four-way valve may be different from your actual valve.
5 Compressor How to remove the compressor.1) Complete the work of
sections1 and 3.
Recover the refrigerant from the refrigerant circuit.
2) Remove the discharge and suction pipes with a burner.
3) Remove the hex nutsand washers securingthe compressor on the bottom plate.
4) Lift the compressorfrom the base pan assembly.
2
3
3
32808001101 53Specifications subject to change without notice.
DISASSEMBLY INSTRUCTIONS SIZES 9−12K (208−230V)
No. Part name Procedures Remarks
Panel plate How to remove the panel plate.
1) Stop the air conditioner
and turn “OFF” the
power breaker.
2) Remove the big handle
first, then remove the
top panel (3 screws).
3) Remove the front
panel screws (6).
4) Remove the right side
panel screws (8).
2
4
3
Top panel screws (3 screws, 1 screw is under the big handle)
Big
Handler screws (3)
Front panel screws (6)
1
54 32808001101Specifications subject to change without notice.
DISASSEMBLY INSTRUCTIONS SIZES 9−12K (208−230V) (CONT)2 Fan
assemblyHow to remove the fan assembly.
1) After removing the
panel plate using
section 1, remove the
hex nut securing the
fan then remove the
fan.
2) Release the hooks
and open the
electronic control box
cover.
1
2
Compressor T3, T4, T5 sensor
Motor Electronic expansion valve
4 way valve
32808001101 55Specifications subject to change without notice.
DISASSEMBLY INSTRUCTIONS SIZES 9−12K (208−230V) (CONT)
3) Disconnect the fan
motor connector and
from the electronic
control board.
4) Remove the fan motor
screws (4). Then
remove the fan motor.
3 Electrical parts
How to remove the electrical parts.1) After completing the
work in sections 1 and 2, remove thecompressor connectors.
2) Pull out the two bluewires connected with the four way valve.
1
3
3
4
2
56 32808001101Specifications subject to change without notice.
DISASSEMBLY INSTRUCTIONS SIZES 9−12K (208−230V) (CONT)
3) Pull out connectors ofthe condenser coil temp. sensor(T3),outdoor ambient temp. sensor (T4) and discharge temp. sensor (T5).
4) Disconnect the
electronic expansion
valve wire.
5) Remove the
grounding screw.
6) Remove the wires (1,
2, 3). Then remove
the electronic control
box.
4
5 6
32808001101 57Specifications subject to change without notice.
DISASSEMBLY INSTRUCTIONS SIZES 9−12K (208−230V) (CONT)
4 Four-way valve
How to remove the four-way valve.1) Complete the steps in
sections 1, 3.2) Recover refrigerant
from the refrigerant circuit.
3) Remove the coil screw then remove the coil.
4) Detach the welded parts of the four-way valve and pipe.
5) Remove the four-wayvalve assembly.
The picture of four-way valve may differ from your actual valve. 3 4
5 Compressor How to remove the compressor.1) Complete steps in
sections 1, 3.2) Recover refrigerant
from the refrigerant circuit.
3) Remove the4) discharge and suction
pipes with a burner.5) Remove the hex nuts
and washers securingthe compressor on the bottom plate.
6) Lift the compressorfrom the base pan assembly.
2
3
58 32808001101Specifications subject to change without notice.
DISASSEMBLY INSTRUCTIONS SIZES 18K (208−230V)
No. Part name Procedures Remarks
Panel plate How to remove the panel plate.
1) Stop the air conditioner and turn
OFF the power breaker.
2) Remove the top panelscrews (3).
3) Remove the front panel screws (9).
4) Remove the right side panel screws (8).
2
4
3
Top panel screws (3)
Front panel screws (9)
Big handle
screws (3)
1
32808001101 59Specifications subject to change without notice.
DISASSEMBLY INSTRUCTIONS SIZES 18K (208−230V) (CONT)
2 Fan assembly
How to remove the fan assembly.
1) After removing the panel plate using section 1, remove the hex nut securing the fan then remove the fan.
2) After removing the top cover, release the hooks then open the electronic control box cover.
1
2
T3, T4, T5 sensor
Motor wire Electronic
expansion valve
Compressor wire
4 way valve wire Electric pipe heater and Crankcase
electric heater
60 32808001101Specifications subject to change without notice.
DISASSEMBLY INSTRUCTIONS SIZES 18K (208−230V) (CONT)3) Disconnect the
connector for fan motor from the electronic control board.
4) Remove the fan motorscrews. Then remove the fan motor.
3 Electrical parts
How to remove the electrical parts.1) Complete the work of
items 1 and 2, then remove the compressor and reactor connectors.
1
3
4
32808001101 61Specifications subject to change without notice.
DISASSEMBLY INSTRUCTIONS SIZES 18K (208−230V) (CONT)
2) Pull out the two bluewires connected to the four way valve.
3) Remove theconnectors of the condenser coil temp. sensor (T3),outdoor ambient temp. sensor(T4) and discharge temp. sensor (T5).
4) Disconnect the electronic expansion valve wire.
3
3
4
2
62 32808001101Specifications subject to change without notice.
DISASSEMBLY INSTRUCTIONS SIZES 18K (208−230V) (CONT)
5) Remove the electric heaters.
6) Remove the grounding screw.
7) Remove the wires (1,2, 3 or L1, L2, S). Then remove the electronic control box.
5
7
32808001101 63Specifications subject to change without notice.
DISASSEMBLY INSTRUCTIONS SIZES 18K (208−230V) (CONT)
4 Four-way valve
How to remove the four-way valve.1) Complete the steps in
sections 1, 3. 2) Recover refrigerant
from the refrigerant circuit.
3) Remove the coil screw then remove the coil.
4) Detach the welded parts of four-way valve and pipe.
5) Remove the four-wayvalve assembly.
The picture of four-way valve may differ from youractual valve.
3
5 Compressor How to remove the compressor.1) After completing steps
in sections 1, 3,recover refrigerant from the refrigerant circuit.
2) Remove the discharge and suction pipes with a burner.
3) Remove the hex nutsand washers securing the compressor on thebottom plate.
5) Lift the compressorfrom the base pan assembly.
2
3
64 32808001101Specifications subject to change without notice.
DISASSEMBLY INSTRUCTIONS SIZES 24K (208−230V)
No. Part name Procedures Remarks
1 Panel plate How to remove the panel plate.1) Stop the air
conditioner and turn “OFF” the power breaker.
2) Remove the big handle first, then remove the top cover(7 screws).
3) Remove the frontpanel screws (11).
4) Remove the right side panel screws (13).
2
4
3
Front panel screws (11)
Top panel screws (3), 1 screw is under the big handle)
Big handle screws (4)
32808001101 65Specifications subject to change without notice.
DISASSEMBLY INSTRUCTIONS SIZES 24K (208−230V) (CONT)
2 Fan assembly
How to remove the fan assembly.
1) Remove the panelplate using the steps insection 1.
2) Remove the nut securing the fan, thenremove the fan.
3) Release the hooks and remove the screws.Open the electronic control box cover.
2
3
Fan Electronic control box
Compressor
66 32808001101Specifications subject to change without notice.
DISASSEMBLY INSTRUCTIONS SIZES 24K (208−230V) (CONT)
4) Disconnect the fan motor connector from the electronic control board.
5) Remove the fan motor screws (4) of the fan motor, then remove the motor.
5
4
T3, T4, T5, sensor Pressure switch
Compressor
wire
Electronic expansion 4 way valve Motor wire
5
32808001101 67Specifications subject to change without notice.
DISASSEMBLY INSTRUCTIONS SIZES 24K (208−230V) (CONT)3
partsElectrical
1)
How to remove the electrical parts.
2) Pull out the two blue
3)
After completing thework in sections 1 and2, remove thecompressor connector.
wires connected withthe four way valve.
1
2
3
Pull out connectors ofthe condenser coiltemp. sensor (T3),outdoor ambient temp.sensor (T4) anddischarge temp.sensor (T5).
68 32808001101Specifications subject to change without notice.
DISASSEMBLY INSTRUCTIONS SIZES 24K (208−230V) (CONT)
4)
5)
Disconnect thepressure switchconnector.
6)
7)
Remove the groundwires.
Disconnect theelectronic expansionvalve wire from thecontrol board.
6
7
5
Remove the wires (1,2, 3 or L1, L2, S). Thenremove the electroniccontrol box.
4
32808001101 69Specifications subject to change without notice.
DISASSEMBLY INSTRUCTIONS SIZES 24K (208−230V) (CONT)
4 Four-way valve
How to remove the four-way valve.1) Complete the steps in
sections 1, 3.2) Recover the refrigerant
from the refrigerant circuit.
3) Remove the coil screw and then remove the coil.
4) Detach the welded parts of four-way valve and pipe.
5) Remove the four-way valve assembly.
The picture of four-way valve may differ from your actual valve.
5 Compressor How to remove the compressor.1) Complete steps in
sections 1, 3. Recover refrigerant from the refrigerant circuit.
2) Remove the discharge and suction pipes with a burner.
3) Remove the hex nutsand washers securing the compressor to thebottom plate.
4) Lift the compressorfrom the base pan assembly.
2
3 4
70 32808001101Specifications subject to change without notice.
APPENDIX 1
Table 20—Temperature Sensor Resistance Value Table for T1, T2, T3, T4 (°C−−K)°C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm
-20 -4 115.266 20 68 12.6431 60 140 2.35774 100 212 0.62973
-19 -2 108.146 21 70 12.0561 61 142 2.27249 101 214 0.61148
-18 0 101.517 22 72 11.5 62 144 2.19073 102 216 0.59386
-17 1 96.3423 23 73 10.9731 63 145 2.11241 103 217 0.57683
-16 3 89.5865 24 75 10.4736 64 147 2.03732 104 219 0.56038
-15 5 84.219 25 77 10 65 149 1.96532 105 221 0.54448
-14 7 79.311 26 79 9.55074 66 151 1.89627 106 223 0.52912
-13 9 74.536 27 81 9.12445 67 153 1.83003 107 225 0.51426
-12 10 70.1698 28 82 8.71983 68 154 1.76647 108 226 0.49989
-11 12 66.0898 29 84 8.33566 69 156 1.70547 109 228 0.486
-10 14 62.2756 30 86 7.97078 70 158 1.64691 110 230 0.47256
-9 16 58.7079 31 88 7.62411 71 160 1.59068 111 232 0.45957
-8 18 56.3694 32 90 7.29464 72 162 1.53668 112 234 0.44699
-7 19 52.2438 33 91 6.98142 73 163 1.48481 113 235 0.43482
-6 21 49.3161 34 93 6.68355 74 165 1.43498 114 237 0.42304
-5 23 46.5725 35 95 6.40021 75 167 1.38703 115 239 0.41164
-4 25 44 36 97 6.13059 76 169 1.34105 116 241 0.4006
-3 27 41.5878 37 99 5.87359 77 171 1.29078 117 243 0.38991
-2 28 39.8239 38 100 5.62961 78 172 1.25423 118 244 0.37956
-1 30 37.1988 39 102 5.39689 79 174 1.2133 119 246 0.36954
0 32 35.2024 40 104 5.17519 80 176 1.17393 120 248 0.35982
1 34 33.3269 41 106 4.96392 81 178 1.13604 121 250 0.35042
2 36 31.5635 42 108 4.76253 82 180 1.09958 122 252 0.3413
3 37 29.9058 43 109 4.5705 83 181 1.06448 123 253 0.33246
4 39 28.3459 44 111 4.38736 84 183 1.03069 124 255 0.3239
5 41 26.8778 45 113 4.21263 85 185 0.99815 125 257 0.31559
6 43 25.4954 46 115 4.04589 86 187 0.96681 126 259 0.30754
7 45 24.1932 47 117 3.88673 87 189 0.93662 127 261 0.29974
8 46 22.5662 48 118 3.73476 88 190 0.90753 128 262 0.29216
9 48 21.8094 49 120 3.58962 89 192 0.8795 129 264 0.28482
10 50 20.7184 50 122 3.45097 90 194 0.85248 130 266 0.2777
11 52 19.6891 51 124 3.31847 91 196 0.82643 131 268 0.27078
12 54 18.7177 52 126 3.19183 92 198 0.80132 132 270 0.26408
13 55 17.8005 53 127 3.07075 93 199 0.77709 133 271 0.25757
14 57 16.9341 54 129 2.95896 94 201 0.75373 134 273 0.25125
15 59 16.1156 55 131 2.84421 95 203 0.73119 135 275 0.24512
16 61 15.3418 56 133 2.73823 96 205 0.70944 136 277 0.23916
17 63 14.6181 57 135 2.63682 97 207 0.68844 137 279 0.23338
18 64 13.918 58 136 2.53973 98 208 0.66818 138 280 0.22776
19 66 13.2631 59 138 2.44677 99 210 0.64862 139 282 0.22231
32808001101 71Specifications subject to change without notice.
APPENDIX 2
Table 21—Temperature Sensor Resistance Value Table for T5 (°C−−K)°C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm
-20 -4 542.7 20 68 68.66 60 140 13.59 100 212 3.702
-19 -2 511.9 21 70 65.62 61 142 13.11 101 214 3.595
-18 0 483 22 72 62.73 62 144 12.65 102 216 3.492
-17 1 455.9 23 73 59.98 63 145 12.21 103 217 3.392
-16 3 430.5 24 75 57.37 64 147 11.79 104 219 3.296
-15 5 406.7 25 77 54.89 65 149 11.38 105 221 3.203
-14 7 384.3 26 79 52.53 66 151 10.99 106 223 3.113
-13 9 363.3 27 81 50.28 67 153 10.61 107 225 3.025
-12 10 343.6 28 82 48.14 68 154 10.25 108 226 2.941
-11 12 325.1 29 84 46.11 69 156 9.902 109 228 2.86
-10 14 307.7 30 86 44.17 70 158 9.569 110 230 2.781
-9 16 291.3 31 88 42.33 71 160 9.248 111 232 2.704
-8 18 275.9 32 90 40.57 72 162 8.94 112 234 2.63
-7 19 261.4 33 91 38.89 73 163 8.643 113 235 2.559
-6 21 247.8 34 93 37.3 74 165 8.358 114 237 2.489
-5 23 234.9 35 95 35.78 75 167 8.084 115 239 2.422
-4 25 222.8 36 97 34.32 76 169 7.82 116 241 2.357
-3 27 211.4 37 99 32.94 77 171 7.566 117 243 2.294
-2 28 200.7 38 100 31.62 78 172 7.321 118 244 2.233
-1 30 190.5 39 102 30.36 79 174 7.086 119 246 2.174
0 32 180.9 40 104 29.15 80 176 6.859 120 248 2.117
1 34 171.9 41 106 28 81 178 6.641 121 250 2.061
2 36 163.3 42 108 26.9 82 180 6.43 122 252 2.007
3 37 155.2 43 109 25.86 83 181 6.228 123 253 1.955
4 39 147.6 44 111 24.85 84 183 6.033 124 255 1.905
5 41 140.4 45 113 23.89 85 185 5.844 125 257 1.856
6 43 133.5 46 115 22.89 86 187 5.663 126 259 1.808
7 45 127.1 47 117 22.1 87 189 5.488 127 261 1.762
8 46 121 48 118 21.26 88 190 5.32 128 262 1.717
9 48 115.2 49 120 20.46 89 192 5.157 129 264 1.674
10 50 109.8 50 122 19.69 90 194 5 130 266 1.632
11 52 104.6 51 124 18.96 91 196 4.849
12 54 99.69 52 126 18.26 92 198 4.703
13 55 95.05 53 127 17.58 93 199 4.562
14 57 90.66 54 129 16.94 94 201 4.426
15 59 86.49 55 131 16.32 95 203 4.294
16 61 82.54 56 133 15.73 96 205 4.167
17 63 78.79 57 135 15.16 97 207 4.045
18 64 75.24 58 136 14.62 98 208 3.927
19 66 71.86 59 138 14.09 99 210 3.812
72 32808001101Specifications subject to change without notice.
APPENDIX 3
Table 22—ΔT(°F)=9ΔT(°C)/5°C °F °C °F °C °F °C °F °C °F
-5 23 21 69.8 51 123.8 82 179.6 113 235.4
-4 24.8 22 71.6 52 125.6 83 181.4 114 237.2
-3 26.6 23 73.4 53 127.4 84 183.2 115 239
-2 28.4 24 75.2 54 129.2 85 185 116 240.8
-1 30.2 25 77 55 131 86 186.8 117 242.6
0 32 25.5 77.9 56 132.8 87 188.6 118 244.4
0.5 32.9 26 78.8 57 134.6 88 190.4 119 246.2
1 33.8 27 80.6 58 136.4 89 192.2 120 248
1.5 34.7 28 82.4 59 138.2 90 194 121 249.8
2 35.6 29 84.2 60 140 91 195.8 122 251.6
2.5 36.5 30 86 61 141.8 92 197.6 123 253.4
3 37.4 31 87.8 62 143.6 93 199.4 124 255.2
3.5 38.3 32 89.6 63 145.4 94 201.2 125 257
4 39.2 33 91.4 64 147.2 95 203 126 258.8
4.5 40.1 34 93.2 65 149 96 204.8 127 260.6
5 41 35 95 66 150.8 97 206.6 128 262.4
6 42.8 36 96.8 67 152.6 98 208.4 129 264.2
7 44.6 37 98.6 68 154.4 99 210.2 130 266
8 46.4 38 100.4 69 156.2 100 212 131 267.8
9 48.2 39 102.2 70 158 101 213.8 132 269.6
10 50 40 104 71 159.8 102 215.6 133 271.4
11 51.8 41 105.8 72 161.6 103 217.4 134 273.2
12 53.6 42 107.6 73 163.4 104 219.2 135 275
13 55.4 43 109.4 74 165.2 105 221 136 276.8
14 57.2 44 111.2 75 167 106 222.8 137 278.6
15 59 45 113 76 168.8 107 224.6 138 280.4
16 60.8 46 114.8 77 170.6 108 226.4 139 282.2
17 62.6 47 116.6 78 172.4 109 228.2 140 284
18 64.4 48 118.4 79 174.2 110 230 141 285.8
19 66.2 49 120.2 80 176 111 231.8 142 287.6
20 68 50 122 81 177.8 112 233.6 143 289.4
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