Table of Contents
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R−410A Ductless Split System
Air Conditioner and Heat Pump
MODELS: DLC4(A/H)6−Outdoor, DLF4(A/H)6−Indoor
INTRODUCTION
This Service Manual provides the necessary information to
service, repair, and maintain the DLF4(A,H), DLC4(A/H)
TABLE OF CONTENTS
PHYSICAL DATA
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!
Failure to follow this warning could
oxygen
operating refrigerant compressors.
Pressurized mixtures of air or
gases containing oxygen can lead
to an explosion.
SAFETY CONSIDERATIONS
Improper
installation,
adjustment,
maintenance, or use can cause explosion, fire, electrical
shock, or other conditions which may cause death, personal
injury, or property damage. Consult a qualified installer,
SERVICE MANUAL
SIZES: 9K, 12K, 18K, and 24K
PAGE
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4−7
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28−31
32−59
60−62
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for
leak
testing
or
alteration,
service,
service agency, or your distributor or branch for information
or assistance. The qualified installer or agency must use
factory−authorized kits or accessories when modifying this
product. Refer to the individual instructions packaged with
1
the kits or accessories when installing.
2
Follow all safety codes. Wear safety glasses, protective
clothing, and work gloves. Use quenching cloth for brazing
3
operations. Have fire extinguisher available. Read these
instructions thoroughly and follow all warnings or cautions
8
included in literature and attached to the unit. Consult local
8
building codes and National Electrical Code (NEC) for
9
special requirements.
10
Recognize safety information. This is the safety−alert
11
symbol
! !
When you see this symbol on the unit and in
13
instructions or manuals, be alert to the potential for personal
14
injury.
17
Understand these signal words: DANGER, WARNING, and
18
CAUTION.
These words are used with the safety−alert
symbol. DANGER identifies the most serious hazards which
19
will result in severe personal injury or death. WARNING
23
signifies hazards which could result in personal injury or
25
death. CAUTION is used to identify unsafe practices which
may result in minor personal injury or product and property
damage. NOTE is used to highlight suggestions which will
result in enhanced installation, reliability, or operation.
!
63
64
ELECTRICAL SHOCK HAZARD
75
Failure to follow this warning could result in personal
79
injury or death.
85
Before installing, modifying, or servicing system, main
90
electrical disconnect switch must be in the OFF
96
position. There may be more than 1 disconnect switch.
102
Lock out and tag switch with a suitable warning label.
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Do not bury more than 36 in. (914 mm) of refrigerant
pipe in the ground. If any section of pipe is buried, there
must be a 6 in. (152 mm) vertical rise to the valve
connections on the outdoor units. If more than the
recommended length is buried, refrigerant may migrate
to the cooler buried section during extended periods of
system shutdown. This causes refrigerant slugging and
could possibly damage the compressor at start−up.
WARNING
CAUTION
421 08 9205 00
2/21/14
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Table of Contents
Related Manuals for International comfort products DLF4A6
Summary of Contents for International comfort products DLF4A6
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Page 1: Table Of Contents
SERVICE MANUAL R−410A Ductless Split System Air Conditioner and Heat Pump MODELS: DLC4(A/H)6−Outdoor, DLF4(A/H)6−Indoor SIZES: 9K, 12K, 18K, and 24K INTRODUCTION This Service Manual provides the necessary information to service agency, or your distributor or branch for information service, repair, and maintain the DLF4(A,H), DLC4(A/H) or assistance. -
Page 2: Model / Serial Number Nomenclature
MODEL NOMENCLATURE MODEL SERIES Position Number DLC = Outdoor DLF = Indoor Outdoor/Indoor 4A6 = AC 4H6 = HP Type 09 = 9k BTU 12 = 12k BTU 18 = 18k BTU 24 = 24k BTU Size J = 115−1−60 K = 208/230−1−60 Voltage Factory Designation... -
Page 3: Standard Features And Accessories
STANDARD FEATURES AND ACCESSORIES INDOOR UNITS Ease Of Installation Mounting Brackets Low Voltage Controls Comfort Features Microprocessor Controls Wireless Remote Control Rapid Cooling/Heating Automatic Air Sweep Cold Blow Prevention Continuous Fan * Auto Restart Feature Memory Function Auto Changeover on Heat Pumps Dry Function Energy Saving Features Inverter Driven Compressor... - Page 4 PHYSICAL DATA − DLC4A6 Outdoor Unit DLC4A6 System Voltage 115-1-60 208/230-1-60 Control Voltage Low Voltage Pulse DC Rated Cooling Capacity (Btuh) 9,000 11,800 12,000 18,000 22,000 Cooling. Capacity Range 3,500-11,000 3,300-12,500 3,300-12,500 4,500-21,000 6,400-24,000 Min - Max (Btuh) Operating Weight lb. (kg) 75 (34) 63.8 (30) 112.2 (51)
- Page 5 PHYSICAL DATA CONTINUED − DLF4A6 Indoor Unit DLF4A6 System Voltage 115 V 208/230-1-60 Control Voltage Low Voltage Pulse DC Electrical Connections Indoor Unit Powered From Outdoor Unit Rated Cooling Capacity (Btuh) 9,000 11,800 12,000 18,000 22,000 Operating Weight lb. (kg) 18.7 (8.5)
- Page 6 PHYSICAL DATA CONTINUED − DLC4H6 Outdoor Unit DLC4H6 System Voltage 115-1-60 208/230-1-60 Control Voltage Low Voltage Pulse DC Rated Cooling Capacity (Btuh) 9,000 11,800 12,000 18,000 22,000 Cooling. Capacity Range 3,500 - 11,000 3,300 - 12,500 3,300 - 12,500 4,500 - 21,000 6,400 - 24,000 Min - Max (Btuh) Rated Heating Capacity (Btuh)
- Page 7 PHYSICAL DATA CONTINUED − DLF4H6 Indoor Unit DLF4H6 System Voltage 115 V 208/230-1-60 Control Voltage Low Voltage Pulse DC Electrical Connections Indoor Unit Powered From Outdoor Unit Rated Cooling Capacity (Btuh) 9,000 11,800 12,000 18,000 22,000 Rated Heating Capacity (Btuh) 9,800 13,000 12,000...
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Page 8: Ahri Capacity Ratings
AHRI* CAPACITY RATINGS Model Numbers Cooling High Heating 47°F Low Heating 17°F Capacity Capacity Outdoor Unit Indoor Unit SEER HSPF Capacity (Btuh) (Btuh) (Btuh) DLC4A609J1A DLF4A609J1A 9,000 12.0 16.0 DLC4A612J1A DLF4A612J1A 11,800 16.0 DLC4A612K1A DLF4A612K1A 12,000 16.0 DLC4A618K1A DLF4A618K1A 18,000 11.1 16.0 DLC4A624K1A... -
Page 9: Sound Ratings
SOUND RATINGS Outdoor Units Model Number Sound Power dBA Sound Pressure dBA DLC4A609J1A DLC4A612J1A DLC4A612K1A DLC4A618K1A DLC4A624K1A DLC4H609J1A DLC4H612J1A DLC4H612K1A DLC4H618K1A DLC4H624K1A Indoor Units Medium High Turbo Sound Sound Sound Sound Sound Sound Sound Sound Model Number Power Pressure Power Pressure Power Pressure... -
Page 10: Dimensions − Indoor
DIMENSIONS − INDOOR A12377 Net Operating Weight Unit Size In. (mm) In. (mm) In. (mm) Lbs. (Kg) 30.3 (770) 11.1 (283) 7.9 (201) 18.7 (8.5) 12 K 30.3 (770) 11.1 (283) 7.9 (201) 19.8 (9.0) 18 K 34.0 (865) 12.0 (305) 8.5 (215) 26.4 (12) 24 K... -
Page 11: Dimensions − Outdoor
DIMENSIONS − OUTDOOR 25.9 (658) 10.8 (274) 28.0 (711) 12.5 (318) 18.5 (470) Unit: IN. (mm) Unit: IN. (mm) A12532 Figure 4 - 12K 230V (Net Operating Weight: 63.8 lbs. / 30 kg) 421 08 9205 00... - Page 12 13.4 (340) 35.0 (890) 37.9 (963) 15.6 (396) 22.0 (560) Unit: IN. (mm) A12533 Figure 5 - 18K and 24K (Net Operating Weight: 112.2 lbs. / 51 kg) 421 08 9205 00...
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Page 13: Clearances
CLEARANCES Indoor Unit Distance to Ceiling 6 in (152 mm) Distance to Wall Distance to Wall 6 in (152 mm) 6 in (152 mm) NOTE: Refrigerant lines may be routed in any of the (4) directions, right, right rear, left, or left rear. Distance in Front of Unit Distance to Floor See instructions for details... -
Page 14: System Operating Envelope
SYSTEM OPERATING ENVELOPE Supply Voltage 115-1-60 AC 208/230-1-60 AC Model Indoor Operating Range (A/C and 61 - 86 (16 - 30) HP) °F (°C) Cooling Ambient Operating Range 64 - 113 64 - 113 5 - 109 5 - 118 5 - 118 (A/C) °F (°C) (18 - 45) - Page 15 SYSTEM OPERATING ENVELOPE CONTINUED 5ºF 118ºF 86ºF 86ºF Heating Cooling Continuous Continuous Operation Operation 61ºF 61ºF 75ºF 19ºF Outdoor Temperature (°F) Figure 9 - 18k 230V System Operating Envelope 5ºF 118ºF 86ºF Cooling Continuous Operation 61ºF Outdoor Temperature ( ° Figure 10 - 24k AC 230V System Operating Envelope 421 08 9205 00...
- Page 16 SYSTEM OPERATING ENVELOPE CONTINUED 118ºF 50ºF 86ºF 86ºF Cooling Heating Continuous Continuous Operation Operation 61ºF 61ºF 75ºF 5ºF Outdoor Temperature ( ° Figure 11 - 24k HP 230V System Operating Envelope 421 08 9205 00...
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Page 17: Electrical Data
ELECTRICAL DATA Cooling Only Operating Voltage* System Voltage Compressor Outdoor Fan Indoor Fan{ FUSE/ Unit MAX / CB Amp Size VOLT-PH-HZ VOLTS (MOCP) 115 -1 - 60 127/103 9.76 25.00 0.17 0.38 12 K 115 -1 - 60 127/103 11.20 25.00 0.17 12 K... -
Page 18: Connection Diagrams
CONNECTION DIAGRAMS DLC4A6/DLF4A6 9K~12K 115-1-60 Cooling Only Connection Diagram CONNECTING CABLE OUTDOOR TO INDOOR CAUTION Attention Control Use Copper Conductors Only Main Main Power from Power from With Minimum 300 Volt, 2/64" Power to Control to Power to from Power... -
Page 19: Wiring Diagrams
CONNECTION DIAGRAMS WIRING DIAGRAMS DLC4A609/12 DLF4A609/12 A13081 Figure 13 - 9K / 12K Cooling Only 115−1−60... - Page 20 CONNECTION DIAGRAMS DLC4H609/12J1A DLF4H609/12J1A A13082 Fi 18 38 40GVQ 9k / 12k HP 11 1 60 Wi i Figure 14 - 9K / 12K Heat Pump Only 115−1−60...
- Page 21 CONNECTION DIAGRAMS ING DIAGRAMS CONTINUED DLC4H612K1A DLF4H612K1A A13083 Figure 15 - 12k Heat Pump Only 230−1−60...
- Page 22 CONNECTION DIAGRAMS DLC4A618/24K1A DLF4A618/24K1A A13084 Figure 16 - 18K / 24K 230−1−60...
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Page 23: Refrigeration System Diagram
Capillary i a r t r e n COOLING A13086 Figure 17 - Refrigeration System Diagram DLC/DLF4A6 Cooling Only 9k / 12k − 115v; 12k / 18k − 230v GAS SIDE 3-WAY VALVE 4-Way valve Muffler Di s charge... - Page 24 Accumlator COMPRESSOR HEAT EXCHANGE (CONDENSER) LIQUID SIDE Electronic Expansion Valve Strainer 2-WAY VALVE COOLING A13088 Figure 19 - Refrigeration System Diagram DLC/DLF4A6 Cooling Only 24k − 230v GAS SIDE 3-WAY VALVE 4-Way valve Muffler Di s charge HEAT EXCHANGE (EVAPORATOR)
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Page 25: System Evacuation And Charging
SYSTEM EVACUATION AND CHARGING Deep Vacuum Method CAUTION The deep vacuum method requires a vacuum pump capable of pulling a vacuum of 500 microns and a vacuum gage UNIT DAMAGE HAZARD capable of accurately measuring this vacuum depth. The Failure to follow this caution may result in equipment deep vacuum method is the most positive way of assuring a damage or improper operation. -
Page 26: Remote Control And Functions
REMOTE CONTROL AND FUNCTIONS ON/OFF Press to start or stop operation AUTO MODE Press to select operation mode HEALTH X-FAN (AUTO/COOL/DRY/FAN/HEAT) - : Press to decrease temperature setting HUMIDITY +: Press to increase temperature setting FILTER Press to set fan speed TURBO Horizontal Swing HOUR... -
Page 27: Remote Control Display
Remote Control Display MODE DISPLAY AUTO COOL HEAT SLEEP A12391 NOTE: Symbols shown in this manual are for the purpose of demonstration. During actual operation, only the relevant symbols are displayed. 1. TRANSMISSION INDICATOR: Illuminates when re- 8. HEALTH/SAVE: HEALTH is not available. SAVE is mote control transmits signals to the indoor unit. -
Page 28: Function And Controls
FUNCTION AND CONTROLS Description of Each Control Operation Total current up and frequency down protection If I vA, frequency rise will be allowed; if I ≥ B, total total Temperature Parameters frequency rise will not be allowed; if I ≥ C, the compressor total zIndoor preset temperature (T preset... - Page 29 During defrost, if operation time for compressor doesn’t reach Under AUTO mode, if T +3.6°F is detected, the preset 3 minutes, the condenser will not defrost in the next 2 hours. unit will select to run under heating mode, in which case the At the time of defrost the compressor stops operation, and 30 preset temperature is 64.4°F;...
- Page 30 (9) Up−and−Down Swinging Control Overload protection When the power is turned on, the up−and−down motor will If temperature sensed by the overload sensor is over 239°F, first move the air deflector to 0 counter−clockwise. The air the compressor will stop and the outdoor fan will stop with a outlet will be closed.
- Page 31 (13) Memory function when interrupting the power supply Discharge Pipe Control Memory content: mode, swing function, light, set temperature The discharge pipe temperature is used as the compressor’s and blower speed. internal temperature. If the discharge pipe temperature rises After power is interrupted, the machine will start according to above a certain level, the operating frequency upper limit is the content of the memory automatically.
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Page 32: Troubleshooting
TROUBLESHOOTING Precautions for Performing Inspections and Repairs WARNING Be cautious during installation and maintenance. Follow all rules and regulations to avoid electric shock and to prevent injury or damage. ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death. - Page 33 TROUBLESHOOTING (CONTINUED) Display and Interpretation of Error Codes: This unit has on−board diagnostics. Error codes will appear on the LED display on the front panel of the indoor unit in place of the temperature display. Error codes are also displayed on the outdoor unit microprocessor board with colored LED lights. The table below explains the error codes for both units.
- Page 34 TROUBLESHOOTING (CONTINUED) Diagnostic Codes DLC/DLF4(A,H)6 12K, 230v Error Code on in Malfunction Repair Method/Cause door unit Indoor PCB Malfunction Replace indoor main board Anti-freeze Protection Outdoor ambient temperature is too low System overload protection Check for dirty or blocked heat exchangers Indoor motor malfunction Check motor mounting and wiring Indoor pipe temperature sensor malfunction...
- Page 35 TROUBLESHOOTING (CONTINUED) Diagnostic Codes DLC/DLF4(A,H)6 18k−24k, 230v Error Code Malfunction Repair Method/Cause on indoor unit Poor heat exchange. Are the coils clogged or blocked? Is the ambi System high pressure protection ent temperature out of system range? Anti-freeze Protection Outdoor ambient temperature is too low Discharge temperature sensor malfunction Measure the resistance value in the sensor (out of range)
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Page 36: Malfunction Analysis
TROUBLESHOOTING (CONTINUED) Malfunction Analysis Note: When replacing the controller, make sure to insert the jumper into the new controller, otherwise the unit will display C5 Measure insulation resistance The breaker trips immediately to ground to see if there is any when it is set to IONI. - Page 37 TROUBLESHOOTING (CONTINUED) Improperly set temperature Adjust set temperature If cooling or heating load is Check the forecasted load of cooling (heating) matched to unit The refrigerant has leakage Fix the leak and recharge the system. or is insufficient Leakage between the high pres− Replace the compressor sure and the low pressure in−...
- Page 38 TROUBLESHOOTING (CONTINUED) The windings of the indoor fan motor are open or the over heat Replace the fan motor or the defective part. protection has kicked in. The built−in heat protection of the motor Replace the fan motor kicks in frequently because the motor is The fan does not abnormal.
- Page 39 TROUBLESHOOTING (CONTINUED) The torque of the swing motor is not enough First, check whether the connection is Wrong connection The swing fan wrong. If no, replace the parts does not run. The controller is damaged(IC2003 is damaged, the swing relay can not close, etc) Controller malfunction (IC2003 Change controller...
- Page 40 TROUBLESHOOTING (CONTINUED) Analysis or processing of some of the malfunction display: 5 Compressor over load protection 1 Compressor discharge protection Possible causes: insufficient or too much refrigerant; blockage of capillary or metering device and increase of suction temp.; im- Possible causes: shortage of refrigerant; blockage of air filter; proper running of compressor, stuck bearing, damage of dis- poor ventilation or air flow short circuit of condenser;...
- Page 41 TROUBLESHOOTING (CONTINUED) Basic System Check Applicable for 09 & 12K model (1) Capacitor charge fault (Fault with outdoor unit)(AP1 below refers to the outdoor control panel) Main Check Points: Use AC voltmeter to check if the voltage between terminal L and N on the wiring board is within 210 AC 240 VAC.
- Page 42 TROUBLESHOOTING (CONTINUED) IPM Protection, Out−of−step Fault, Compressor Phase Over current (AP1 below refers to the outdoor control panel) Main check points: Is the connection between control panel AP1 and compressor COMP secure? Loose? Is the connec- tion in correct order? Is the voltage input of the machine within normal range? (Use AC voltmeter to measure the voltage between terminal L and N on the wiring board XT)
- Page 43 Energize and switch on Use AC voltmeter If the voltage Check the supply to measure the IPM protection between terminal L voltage and voltage between occurs after the and N on wiring machine has run for terminal L and N restore it to board XT is within a period of time?
- Page 44 TROUBLESHOOTING (CONTINUED) High temperature and overload protection diagnosis (AP1 hereinafter refers to the control board of the outdoor unit) Detection: Is outdoor ambient temperature in normal range°? Are the outdoor and indoor fans operating normally? Is the heat dissipation environment inside and out- side the unit good? Fault diagnosis process: Overheat and high...
- Page 45 TROUBLESHOOTING (CONTINUED) Start−up failure (following AP1 for outdoor unit control board) Detection Whether the compressor wiring is connected correctly? Is the compressor broken? Has the compressor stopped long enough before re−start Fault diagnosis process: Power on the unit Restart it up after Is stop time of the compressor 3 minutes longer than 3 minutes?
- Page 46 TROUBLESHOOTING (CONTINUED) Out of step diagnosis for the compressor (AP1 hereinafter refers to the control board of the outdoor unit) Detection: Is the system pressure too high? Is the input voltage too low? Fault diagnosis process: Out of step occurs in Out of step occurs once the operation unit is powered on.
- Page 47 TROUBLESHOOTING (CONTINUED) Overload and air exhaust malfunction diagnosis (following AP1 for outdoor unit control board) Detection: Is the PMV connected well or not? Is the PMV damaged? Has refrigerant leaked? Fault diagnosis process: 20 minutes after the complete unit is powered off Is the terminal FA for the Connect the...
- Page 48 TROUBLESHOOTING (CONTINUED) Power factor correct or (PFC) fault (a fault of outdoor unit) (AP1 hereinafter refers to the control board of the outdoor unit) Detection: Check if the reactor (L) of the outdoor unit and the PFC capacitor are broken Fault diagnosis process: Start Check wiring of the...
- Page 49 TROUBLESHOOTING (CONTINUED) Communication malfunction: (following AP1 for outdoor unit control board) Detection: Is there any damage to the indoor unit main board communication circuit? Is communication circuit damaged? Are the indoor and outdoor units connection wire, and indoor and outdoor units inside wiring correct or not, is there any damage? Fault diagnosis process: Start...
- Page 50 TROUBLESHOOTING (CONTINUED) Application for 18 & 24K model Confirm the malfunction type according to the malfunction indicator of indoor/outdoor unit and malfunction sheet (usually the sheet will be stuck on the electric box cover or top cover of the unit). As long as there is a malfunction, the indicator of the outdoor controller board will display the corresponding malfunction directly;...
- Page 51 TROUBLESHOOTING (CONTINUED) Capacitor charging malfunction (outdoor unit malfunction) Detection: Detect if the voltage of L and N terminal of wiring board is between 210AC 240AC by AC volt meter; Is reactor (L) well connected? Is connection wire loose or disconnected? Is reactor (L) damaged? Malfunction diagnosis process: Turn on the unit and wait 1 minute...
- Page 52 TROUBLESHOOTING (CONTINUED) IPM protection, de−synchronizing malfunction, phase current of compressor is over−current (outdoor unit malfunction) Outdoor unit malfunction indicator status Detection: If control board AP1 and compressor COMP are well Malfunction connected? If they are loose? If the connection se- IPM protection quence is correct? Is voltage input in the normal range (Test the voltage...
- Page 53 Energize and switch on Use AC voltmeter Check the supply to measure the If the voltage IPM protection voltage and voltage between between terminal L and N on wiring occurs after the machine has run for restore it to terminal L and N board XT is within a period of time? on the wiring...
- Page 54 TROUBLESHOOTING (CONTINUED) Diagnosis for high temperature, overload protection (check outdoor unit in cooling mode and check indoor unit in heating mode) Outdoor unit malfunction indicator status Detection: If the outdoor ambient temperature is in normal range; If the indoor and outdoor fan are running normally; If the heat transfer environment inside and outside the unit is good (including if the fan speed is too low)?
- Page 55 TROUBLESHOOTING (CONTINUED) Diagnosis for failure start up malfunction (outdoor unit malfunction) Outdoor unit malfunction indicator status Detection: If the compressor wiring is correct? If the compressor has been off long enough? If the compressor is damaged? If the refrigerant charging is too much? Malfunction diagnosis process: Energize the unit and start it...
- Page 56 TROUBLESHOOTING (CONTINUED) Diagnosis for compressor synchronization (outdoor unit malfunction) Outdoor unit malfunction indicator status Detection: If the system pressure is too high? If the working voltage is too low? Malfunction diagnosis process: Synchronization after Synchronization energizing the unit during operation and starting it Check if the fan Replace fan...
- Page 57 TROUBLESHOOTING (CONTINUED) Diagnosis for overload and discharge malfunction (outdoor unit malfunction) Outdoor unit malfunction indicator status Malfunction Overload Discharge Detection: If the electronic expansion valve is connected cor- rectly? Is the expansion valve damage? If the refrigerant leaked? If the overload protector is damage? If the discharge temp sensor is damage? Malfunction diagnosis process: After the unit...
- Page 58 TROUBLESHOOTING (CONTINUED) Communication malfunction Outdoor unit malfunction indicator status Detection: Check if the connection wire and the built−in wiring of indoor and outdoor unit is connected and not damaged; If the communication circuit of indoor mainboard is damaged? If the communication circuit of outdoor mainboard (AP1) is damaged? Malfunction diagnosis process: Start...
- Page 59 TROUBLESHOOTING (CONTINUED) Diagnosis process for outdoor communication circuit (refer to the key detection points of outdoor unit) Start Test voltage valueof Test10 position in diagram with voltage meter Number jumping Test voltage value of Test 13 position in diagram with voltage meter Number jumping Outdoor unit...
- Page 60 APPENDIX 1 421 08 9205 00...
- Page 61 APPENDIX 2 421 08 9205 00...
- Page 62 APPENDIX 3 421 08 9205 00...
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Page 63: Unit Removal Procedures
UNIT REMOVAL PROCEDURES WARNING WARNING ELECTRICAL SHOCK HAZARD ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal Failure to follow this warning could result in personal injury or death. injury or death. Before installing, modifying, or servicing system, main A large−capacity electrolytic capacitor is used in the electrical disconnect switch must be in the OFF position. -
Page 64: Indoor 9K − 12K 115V
REMOVAL PROCEDURE OF INDOOR UNIT − 9K − 12K 115V Steps 1. External feature s If the ON/OFF button is pressed for 5 seconds, a forced cooling op - eration will be carried out fo r approx. 15 minutes . 2. - Page 65 Steps 3. Remove front panel Support the front panel with one hand, while removing the rotation Pull down horizontal louver axis at the upper center with the by pulling it forward s . other hand. And pull the front panel forward to remove.
- Page 66 Steps 4. Remove electric box cover screws Remove the electric box cover mounting screw. Open electric box cover upward s . screws 5. Remov e front case assembly Remove the 3 screws, in the right and the left sides, Screw stoppers inside the which fix the main body flap which were equipped in with the front case.
- Page 67 Steps 6. Remove the Vertical blade Hook Unfasten the hooks at the upper 2 positions. A set of vertical blade has 6 fins on the assembly. (It is impossible to replace only one fin.) The set of vertical blades is not marked for difference between right and left.
- Page 68 Steps 7. Remove electric box Disconnect the c able clamp Pay attention to the direction of the retainer of the thermistor so that the retainer will not touch the harness (same as the existing models.) Terminal board Disconnect the connection wires. Connecting wires Take care not to lo o se the clip...
- Page 69 Steps Remove fan motor s ignal fan motor s ignal w ire w ire Remove a screw on the electrical box. Bottom frame Pull up the electrical box forward to remove. Hook 421 08 9205 00...
- Page 70 Steps 8. Remove the refrigerant piping. CAUTION If gas leaks, collect all refrigerant Lift the indoor unit by a from the unit, then repair the leak. wooden base. After conducting vacuum drying, recharge the proper amount of refrigerant. CAUTION Wooden base Do not contaminate the refrigerant.
- Page 71 Steps 9.Remove the heat exchanger . When disconnecting pipes, cover with caps to prevent Remove the indoor unit from the mounting contamination. plate. Liquid piping Gas piping (R8019) Auxiliary piping Piping fixture Release the hook of the piping fixture on the back of the unit.
- Page 72 Steps Loosen the 2 screws at the right and the left, which fix the Evaporator Assy. Auxiliary piping Widen the auxiliary piping to the extent of 10°~20°. Pull the heat exchanger Heat exchanger to the front side to undo the hooks completely, and then lift it.
- Page 73 Steps 10. Remove c ross f low blade and f a n m oto r Remove c ross f low blad e and f an m oto r 1 1 . Remove retention ring of bearing. Bear ing 12 . Re m o v e c r o ss f low blad e an d m otor s ub - a ssy 421 08 9205 00...
- Page 74 Steps 13. Remove m otor s ub - a ss y Remove m otor s ub - a ss y 14 . Re m o v e f an m o t o r 421 08 9205 00...
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Page 75: Outdoor 9K − 12K 115V
REMOVAL PROCEDURE OF OUTDOOR UNIT − 9K − 12K 115V Procedure Points Steps 1. Features Cable Cross Loosen the screw of the Plate sub-assy Cable Cross Plate sub- assy and remove it. Pull down the stop valve cover and remove it. 2. - Page 76 Procedure Points Steps grille Remove the screws connecting the grille and the panel with a screwdriver and then remove the grille. Remove the screws connecting the panel and the Lift the front panel and motor support, chassis and remove it while pushing the grille with a screwdriver and right side panel inwards.
- Page 77 Procedure Points Steps Fan motor fixing frane Remove the 4 tapping screws fixing the motor, pull out the pin of leading wire of motor and then remove the motor. Remove the 2 tapping screws on motor support and 1 Fan motor screws on electric box, pull it upward and then remove the motor support.
- Page 78 Procedure Points Steps 6. Remove compressor 4-Way valve assy Unsolder the pipeline connected to the compressor. (Reclaim all refrigerant before disassembling the pipeline) Compressor Remove the 3 foot nuts on compressor and then remove the compressor. Remove the 2 bolts fixing the gas valve, unsolder the joint between the gas valve and suction return pipe...
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Page 79: Indoor 12K − 18K 230V
REMOVAL PROCEDURE OF INDOOR UNIT − 12K − 18K 230V pressed 421 08 9205 00... - Page 80 with removing with panel panst the stop. 421 08 9205 00...
- Page 81 Lift the sides by pulling lifting 421 08 9205 00...
- Page 82 Take care not to lose the clip for the thermistor. Remove the temperature sensor; disconnect the connection wires. Remove the ground screw fixing the evaporator; disconnect all the wires from the terminal. 421 08 9205 00...
- Page 83 Remove the pipe clamp sides which fix the evaporator assy. Remove the evaporator assy. 421 08 9205 00...
- Page 84 Remove the screws from the motor pressure plate and then remove the motor pressure plate. Remove the motor, blade, and shaft cushion rubber base. 421 08 9205 00...
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Page 85: Outdoor 12K 230V
REMOVAL PROCEDURE OF OUTDOOR UNIT − 12K 230V Electric heater band is not shown. Grille in the picture is for reference only. 1. Remove the valve cover The valve cover has 6 hooks. Loosen the screw of the Handle. Pull down the handle and remove Handle 2. - Page 86 3.Remove grille and front panel Loosen one screw and remove the discharge grille. rille Lift the front panel and remove it while pushing Loosen the 5 screws of the right side panel inwards. the front panel. Front panel. 4.Remove right side plate ight side plate Remove the 5 screws from the edge between right-side...
- Page 87 M4×16 Remove the 4 tapping screws fixing the motor. DC fan motor Pull out the lead-out wire Fan motor fixing frane and remove the motor. Remove the 2 tapping screws fixing the motor support. Lift to remove the motor support. Fan motor 6.Remove the electric box Electric box...
- Page 88 8.Remove the sound blanket Since the piping ports on Lift and remove the the sound blanket are sound blanket (top). torn easily, remove the blanket carefully. Untie the strings and open the sound blanket. Lift and remove the sound blanket (body) as it is opened.
- Page 89 10.Remove compressor Unbraze the capillary, valve, and outlet pipe of condenser Remove the 2 screws fixing the gas valve. Unbraze the gas valve and suction pipe and remove the gas valve. (Note: it is necessary to wrap the gas valve when unbrazing. Remove the 2 screws fixing liquid valve.
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Page 90: Outdoor 18K 230V
REMOVAL PROCEDURE OF OUTDOOR UNIT − 18K 230V Electric heater band is not shown. Remove the screws used cover upward Handle Valve cover Remove the screws used 421 08 9205 00... - Page 91 Remove the screws fixing 421 08 9205 00...
- Page 92 threads remove all wires from the terminals and then pull the electric box upwards to remove it. 421 08 9205 00...
- Page 93 blanket. Remove blanket. 421 08 9205 00...
- Page 94 Reclaim unbraze Piping may be hot. Take precautions to avoid burns. Remove 421 08 9205 00...
- Page 95 421 08 9205 00...
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Page 96: Indoor 24K 230V
REMOVAL PROCEDURE OF INDOOR UNIT − 24K 230V Outside view drawing pressed clasp louver Clasp 421 08 9205 00... - Page 97 Remove Draw out the axial bush. Bend the guide louver slightly and then remove it. with one removing with the axial bush the panel past the stop. louver 421 08 9205 00...
- Page 98 Remove the service Lift the service cover Remove the 5 screws in the right and left sides, where fixed to the main body with the front grille. Clasp clasps clasps clasps clasps at right side clasps removed by pulling the upper part forward and lifting up the lower part.
- Page 99 Take care not to lose the clip for the thermistor. Remove the temperature sensor. Disconnect the connection wires. Remove the ground screw fixing the evaporator. Disconnect all the wires from the terminal. Remove the 421 08 9205 00...
- Page 100 the p sides assy, and then remove evaporator. 421 08 9205 00...
- Page 101 10. Remove guard grille guard grille Loosen the clasps and then remove the guard grille. Remove pressure plate of motor Pressure plate of motor Remove the screws fixing the motor pressure plate and then remove the motor pressure plate. lock lock Remove the motor, blade and shaft cushion rubber block.
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Page 102: Outdoor 24K 230V
REMOVAL PROCEDURE OF OUTDOOR UNIT − 24K 230V Remove Remove the 2 screws fixing the damper, and then remove the damper. Damper Remove the 2 screws fixing the valve cover, push it downward and then remove the valve cover. Valve cover Remove pull 421 08 9205 00... - Page 103 Remove Remove Remove the screws fixing the guard grille and then remove the guard grille. Guard g Remove 421 08 9205 00...
- Page 104 Remove the clasps at the electric box cover and then remove the electric box cover. Pull out the motor, compressor, temperature sensor, reactor and wiring terminal of capacitor; remove the ground screws on the side wiring terminal , and the 5 screws fixing the main board, and then remove the main board.
- Page 105 blade Remove blade blade Remove the 4 screws fixing the motor and then remove the motor. Remove the 4 screws fixing the motor support and then remove the motor support. Remove the screws fixing the reactor and then remove the reactor; remove the screws fixing the capacitor clamp and then remove the capacitor.
- Page 106 8. Remove suction pipe and discharge pipe of compressor proof proof blanket blanket soundproof blanket Isolation sheet only Cooling only unit: unbraze Discharge pipe the suction pipe and discharge pipe, and then move them away. Suction pipe re's no refrigerant affect Piping may be hot.
- Page 107 Remove capillary or electric expansion valve Unbraze the weld spots of the main capillary and auxiliary capillary to take off the capillary. Capillary Remove Remove Copyright 2014 International Comfort Products Lewisburg, Tennessee 37091 USA 421 08 9205 00...