Daitsu DS-9KIDR Service Manual
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Daitsu DS-9KIDR Service Manual

Inverter air conditioner
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Air Conditioner Service Manual
Inverter air conditioner
Service Manual
Models
DS-9KIDR(W)/ DOS-9KIDR(W)
DS-12KIDR(W)/ DOS-12KIDR(W)
DS-18KIDR(W)/ DOS-18KIDR(W)
DS-24KIDR(W)/ DOS-24KIDR(W)
DS-9KIDT-2(W)/ DOS-9KIDT-2(W)
DS-12KIDT-2(W)/ DOS-12KIDT-2(W)
DS-18KIDT(W)/ DOS-18KIDT(W)
DS-24KIDT(W)/ DOS-24KIDT(W)
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  • Page 1 Air Conditioner Service Manual Inverter air conditioner Service Manual Models DS-9KIDR(W)/ DOS-9KIDR(W) DS-12KIDR(W)/ DOS-12KIDR(W) DS-18KIDR(W)/ DOS-18KIDR(W) DS-24KIDR(W)/ DOS-24KIDR(W) DS-9KIDT-2(W)/ DOS-9KIDT-2(W) DS-12KIDT-2(W)/ DOS-12KIDT-2(W) DS-18KIDT(W)/ DOS-18KIDT(W) DS-24KIDT(W)/ DOS-24KIDT(W)
  • Page 2 Air Conditioner Service Manual CONTENTS Part Ⅰ Technical Information…………………………………...….…………3 1. Important Notice……………………………………………………….………..…………..3 2. Specifications………………………………………………………………..……………..4 2.1 Operation characteristic curve……………………………………….……………..………..…...……………4 2.2 The relation curve of CAPACITY-TEMPERATURE……………………………..……..………...…..………4 2.3 The relation curve of PRESSURE-TEMPERATURE……………………………………..………...…….….5 2.4 The relation curve of NOISE-COMPRESSURE OPERATION FREQUENCY…………..……...…….…..6 3. The Production Dimensions………………………………………………….…..……….7 4.
  • Page 3 Air Conditioner Service Manual Part Ⅰ Technical Information 1. Important Notice This service manual is intended for use by individuals possessing adequate backgrounds of electrical, electronic and mechanical experience. Any attempt to repair the appliance may result in personal injury and property damage.
  • Page 4 Air Conditioner Service Manual 2. Specifications 2.1 The relation curve of CAPACITY-TEMPERATURE 2700 110.0% 3400 105.0% 100.0% 3200 2600 105.0% 95.0% 3000 2500 100.0% 90.0% 2800 85.0% 2400 95.0% 2600 80.0% 2300 90.0% 2400 75.0% 35℃ 48℃ 35℃ 48℃ Capacity Rate Capacity Rate...
  • Page 5 Air Conditioner Service Manual 2.4 The relation curve of NOISE-COMPRESSURE OPERATION FREQUENCY Indoor unit 50.0 50.0 40.0 40.0 30.0 30.0 20.0 20.0 10.0 10.0 Muter Low speed Mid speed High speed super Muter Low speed Mid speed High speed super speed speed Indoor cooling noise...
  • Page 6 Air Conditioner Service Manual 3. Product Dimensions Indoor Unit: Outdoor Unit: Indoor unit Outdoor unit Model DS-9KIDR(W)/ DOS-9KIDR(W) 48.5 DS-12KIDR(W)/ DOS-12KIDR(W) 48.5 DS-18KIDR(W)/ DOS-18KIDR(W) 53.9 DS-24KIDR(W)/ DOS-24KIDR(W) 1010 220 374.9 347.5 58.6 DS-9KIDT-2(W)/ DOS-9KIDT-2(W) 48.5 DS-12KIDT-2(W)/ DOS-12KIDT-2(W) 48.5 DS-18KIDT(W)/ DOS-18KIDT(W) 53.9...
  • Page 7 Air Conditioner Service Manual 4. Refrigeration cycle diagram Heat pump 9K,12K Check valve Liquid side 2-way valve Capillary Heat exchange Heat exchange (Condenser) (Evaporator) Gas side 3-way valve 4-way valve Muffler Muffler Heating Cooling Compressor 18K,24K Liquid side 2-way valve Electronic expansion valve Heat exchange...
  • Page 8 Air Conditioner Service Manual 5. Electric Diagram 5.1 Wiring diagram MODEL: DS-9KIDR(W)/ DOS-9KIDR(W), DS-12KIDR(W)/ DOS-12KIDR(W), DS-18KIDR(W)/ DOS-18KIDR(W), DS-9KIDT-2(W)/ DOS-9KIDT-2(W), DS-12KIDT-2(W)/ DOS-12KIDT-2(W), DS-18KIDT(W)/ DOS-18KIDT(W) INDOOR UNIT： OUTDOOR UNIT...
  • Page 9 Air Conditioner Service Manual MODEL: DS-24KIDR(W)/ DOS-24KIDR(W), DS-24KIDT(W)/ DOS-24KIDT(W) INDOOR UNIT： OUTDOOR UNIT...
  • Page 10 Air Conditioner Service Manual 5.2 PCB LAOUT Indoor PCB 9K,12K,24K Transformer IN ODU AC power output Transformer OUT Fuse ODU AC power input AC fan motor driving IDU/ODU wiring connection --N connector Power supply --N connector Anion connector 10 IDU/ODU communication wiring 11 Left-Right swing connector 12 Up-Down swing connector 13 Display...
  • Page 11 Air Conditioner Service Manual Top view ODU AC power output Fuse ODU AC power input DC fan motor connection IDU/ODU wiring connection --N connector Power supply --N connector Anion connector IDU/ODU communication wiring Left-Right swing connector 10 Up-Down swing connector 11 Display 12 Emergency button 13 Temperature sensor connection...
  • Page 12 Air Conditioner Service Manual Outdoor unit 9K, 12K ODU PCB Mainly relay Fuse L, N & 1 (communication) wiring 4-way valve Heater DC fan motor connector Electronic expansion valve Discharge sensor connector OAT/OPT sensor connector LED5 18,24K DRED(OPTION) OAT/OPT connector Discharge sensor connector Electronic expansion...
  • Page 13 Air Conditioner Service Manual 6. Operation Details 6.1Remote controller ON/OFF button To switch the conditioner on and off. ECO button In cooling mode,press this button ,the temperature will increase 2 on the base of setting temperature: In heating mode, press this button, the temperature will decrease 2 on the base of setting temperature.
  • Page 14 Air Conditioner Service Manual Remote controller DISPLAY Meaning of symbols on the liquid crystal display. FEEL mode indicator or AUTO COOLING indicator or COOL DEHUMIDIFYING indicator or DRY FAN ONLY OPERATION indicator or FAN HEATING indicator or HEAT SIGNAL RECEPTION indicator TIMER OFF indicator TIMER ON indicator AUTO FAN indicator...
  • Page 15 Air Conditioner Service Manual 6.2 Electronic controller RT-------Room Temperature. IPT------Indoor Pipe (Coil) Temperature. ST------Indoor Setting Temperature. OPT---Outdoor Pipe Temperature. OAT---Outdoor Ambient Temperature. ODT---Outdoor Discharge Temperature. CRT---Compensated Room Temperature. IDU--- Indoor unit ODU---Outdoor unit. Note: When AC finishing installation, because of the air ventilation and the distance of temperature test sensor to different location of the house, the temperature for IDU PCB control need compensation.
  • Page 16 Air Conditioner Service Manual delay for the motor should be less than 160s. 2). When switch on unit on cooling mode, ODU fan motor will delay 5s after compressor starts up. 4. When ODU failure or stops for protection, IDU works as preset. Anti-frosting protection Control the unit operation frequency and the frequency changing rate to achieve anti-frosting protection.
  • Page 17 Air Conditioner Service Manual 4). The compressor will also stop working while unit: a. switched off. b. under protection. c. changed to fan mode. 5). Under normal operation, the compressor can be stopped by program only working after 7 min once it starts up. 6).
  • Page 18 Air Conditioner Service Manual 6. Defrost Note: t1: compressor continuous works time. t2: AC unit operation first time going to defrost circle. ℃ t3: compressor accumulated working time (when OPT≤3 unit starts to count the time for t3). When AC unit working to: a.
  • Page 19 Air Conditioner Service Manual 6.2.5 Fan mode 1. The temperature setting: 16~31℃, Fan speed and vane position: as preset. The function for remote controller 58E only. 2. For above function, when unit preset to be auto fan mode, the fan motor will change its operation speed based on the temperature difference of ambient and preset temperature.
  • Page 20 Air Conditioner Service Manual Note: The function setting: Within 3 min while power on unit, set the unit on cooling mode, set temperature 30℃, and mid fan speed, press the ECO button 10 times within 8s, the AUTO-RESTART will be activated. 6.2.10 Protection 6.2.10.1 Overload protection 1.
  • Page 21 Air Conditioner Service Manual unless press ON/OFF button. In the process of unit operation, once the compressor runs continuously more than 6 min, the counter of stop- working protection will be reset to zero and re-start a new counting process. Note: For different models, I and I have different programmed value.
  • Page 22 Air Conditioner Service Manual WIFI OPERATION MAUAL 6.3.1 The WIFI control logic CLOUD Internet controller Home wireless router TCL AC IDU WIFI module IDU PCB Remote controller 6.3.2 Download and installation Customer can scan the QR in the user manual or from appliance APP store to download the APP and install it in the cell phone, while installation achieved, there would be an icon as picture created on the desktop.
  • Page 23 Air Conditioner Service Manual PART Ⅱ Installation and Maintenance 1. Notes for installation and maintenance Safety Precautions Important! Please read the safety of precautions carefully before installation and maintenance. The following contents are very important for installation and maintenance. Please follow the instructions bellow. ●...
  • Page 24 Air Conditioner Service Manual 5) Use equipped components or appointed components during installation. 6) Make sure no foreign objects are left in the unit after finishing installation. Improper installation may lead to fire hazard, explosion, electric shock or injury. Safety precautions for Installing and Relocating the unit. To ensure safety, please be mindful of the following precautions.
  • Page 25 Air Conditioner Service Manual Introduction R32, R290 air conditioner installation 1) Introduction to Refrigerants R32 & R290 The refrigerants used for air conditioners are environmentally friendly hydrocarbons R32 and R290. The two kinds of refrigerants are combustible and odorless. Moreover, they can burn and explode under certain condition.
  • Page 26 Air Conditioner Service Manual Caution:  Please contact the nearest after-sale service center when maintenance is necessary. At the time of maintenance, the maintenance personnel must strictly comply with the Operation Manual provided by the corresponding manufacturer and any non-professional is prohibited to maintain the air conditioner. ...
  • Page 27 Air Conditioner Service Manual It is necessary to choose the place where the inlet and outlet air of the indoor unit is even.  It is necessary to avoid the places where there are other electrical products, power switch plugs and ...
  • Page 28 Air Conditioner Service Manual of the refrigerant leak detector should not exceed 25% of the lower explosion limit (LEL), the refrigerant leak detector must be working during maintenance. 2) Inspection of air conditioner  It is necessary to ensure that the air conditioner is in reliable ground connection before maintenance. ...
  • Page 29 Air Conditioner Service Manual  It is necessary to provide firefighting devices such as dry powder or carbon dioxide fire extinguisher appropriate for extinguishing the electrical fire and keep such firefighting devices in a usable condition.  Temporary wires and sockets are prohibited on the maintenance location. 6).
  • Page 30 Air Conditioner Service Manual precautionary measures in work. For example, it is prohibited to enter the location with any kindling material and it is prohibited to wear clothing or shoes which easily produce static. Handling suggestions when a large amount of combustible refrigerant leaks: It is necessary to immediately operate the ventilating equipment while cutting off other power supply and ...
  • Page 31 Air Conditioner Service Manual 2 Installation 2.1 Installation Dimension Diagram Space to the wall At least 15cm At least 15cm Space to the wall Space to the obstruction Space to the floor Space to the obstruction Drainage pipe Connecting wire...
  • Page 32 Air Conditioner Service Manual 2.2 Accessory Remote controller Remote Batteries Vinyl tape controller supporter Drain hose Hole cover Screw Insulation material...
  • Page 33 Air Conditioner Service Manual 1） Must follow the electric safety regulations when 2.3 Position installing the unit. Indoor unit 2） According to the local safety regulations, use  Install the indoor unit level on a strong wall that is qualified power supply circuit and air switch. not subject to vibrations 3）...
  • Page 34 Air Conditioner Service Manual Indoors Out doors The hole must slope downwards towards the exterior. Note: Keep the drain pipe down towards the direction of the wall hole, otherwise leakage may occur. 2.5.3 Electrical connections---Indoor unit 1).Lift the front panel. 2).Take off the cover as indicated in the picture (by removing a screw or by breaking the hooks).
  • Page 35 Air Conditioner Service Manual When extending the drain hose at the indoor unit, numbers in the picture. When the piping is run in install the drain pipe. direction 1 or 3, cut a notch along the groove on the side of the indoor unit with a cutter. Wrap the insulation material around the Run the piping in the direction of the wall hole and bind connecting portion.
  • Page 36 Air Conditioner Service Manual Outdoor unit condensed water drainage (only for heat pump models) The condensed water and the ice formed in the outdoor unit during heating operation can be drained away through the drain pipe. 1) Fasten the drain port in the 25mm hole placed in the ...
  • Page 37 Air Conditioner Service Manual could be damaged. position and keep the soap water for more than 3min. If there are air bubbles coming out of this position, there a leakage. connection pipes 2.8 Final test flare nuts 1 Preparation of test operation. liquid tap ...
  • Page 38 Air Conditioner Service Manual 3. Maintenance 3.1 Failure code Code Reason Remark IDU & ODU Communication failure The IDU & ODU wiring connection correct? IDU Room Temperature sensor failure.（IDU IDU sensor and PCB. RT failure） IDU Coil temperature sensor failure.（IDU IPT IDU sensor and PCB.
  • Page 39 Air Conditioner Service Manual Cooling system gas flow abnormal Please check the troubleshooting for detail. PROTECTION.. PFC PROTECTION Please check the troubleshooting for detail. The Compressor lack of phase / Anti-phase Please check the troubleshooting for detail. PROTECTION. IPM Module temperature PROTECTION Please check the troubleshooting for detail.
  • Page 40 Air Conditioner Service Manual 3.2 Trouble shooting 3.2.1 E0 ---IDU & ODU communication failure Start Display E0 IDU wiring Check and re- E0 disappear? connection correct ? connect Check communication Replace/ re- E0 disappear? wiring and the connection, connect in good condition? ODU wiring Check and re- E0 disappear?
  • Page 41 Air Conditioner Service Manual 3.2.2 E1, E2 ---IDU Room temperature sensor and/or coil temperature sensor failure. Start Display E1or E2 Is the sensor well Re-connect connected to PCB E1/E2 disappear? Multi-meter check the Replace the sensor sensor, is it open or short circuit? The malfunction eliminated?
  • Page 42 Air Conditioner Service Manual 3.2.3 E6----IDU ventilation failure (PG and DC fan motor only) Start Display E6 Turn the fan blades by hand while power-off condition Adjust the motor and blade Can the fan blades run assembly so that rotor can smoothly? run smoothly.
  • Page 43 Air Conditioner Service Manual 3.2.4 E3, E7 or E8----ODU Coil temperature sensor, Ambient temperature sensor or Discharge temperature sensor failure. When any of the sensor resistance open or short circuit , unit will display failure code as E3/E7 or E8, IDU and ODU turns off.
  • Page 44 Air Conditioner Service Manual 3.2.5 E9---ODU IPM /Compressor drive fault If unit have 6 times stopping works for IPM protection (P0) continuously, it will display E9 error, and unit can’t be recovered to operation, except press ON/OFF button. Display E9 Display F9 or FA first Replace ODU PCB then E9...
  • Page 45 Air Conditioner Service Manual 3.2.6 EF---ODU DC fan motor failure Shut off Check the fan blade by Re install the DC motor hand, can it rotate freely Works normal? Fan motor well Re-connect connect to PCB Works normal? 1. For built-in control (5pins) motor: check the V =310V? Check the fan motor,...
  • Page 46 Air Conditioner Service Manual 3.2.7 EU---ODU voltage test sensor failure After power relay works, when tested voltage effective value less than 50V for 3s continuously, unit will display EU. Start Display EU Test voltage btw ODU Check while voltage terminal L/N, more than become normal 50V~? Unit works?
  • Page 47 Air Conditioner Service Manual 3.2.8 P0---IPM protection When overheat or overcurrent for IPM, AC unit will display P0protection. Display P0 Restart unit. It works normal? Wiring connection Re-connect U/V/W correct? P0 disappear? ODU fan motor no Replace ODU Can compressor works or too slowly? fan motor start up?
  • Page 48 Air Conditioner Service Manual 3.2.9 P1--- Over / under voltage protection 1. Test voltage between L &N, When the power supply V＞AC260V or V＜AC150V, AC will display P1 protection, unit will recover back to previous status while V＞AC155V. 2. Test voltage on the big size electrolytic capacitor of ODU PCB, When DC busbar voltage V＞DC420V or V ＜DC150V, unit will recover back to previous status while DC190V＜V＜DC410V Display P1 Wait until the AC...
  • Page 49 Air Conditioner Service Manual 3.2.10 P2---Over Current protection When the AC unit running current more than I , it will stop and display P2 protection. Note: for different AC model, I has difference valve. Display P2 ODU fan motor Replace fan motor works? P2 disappear? IDU filter or ODU...
  • Page 50 Air Conditioner Service Manual 3.2.11 P4 ---ODU Discharge temperature overheating protection Display P4 ODU temperature Normal protection higher than 60℃? Adjust ODU ODU location Enough space for Unit operate? acceptable? installation ventilation? Condenser too Clean IDU filter or P4 disappear? dirty? or filter ODU condenser.
  • Page 51 Air Conditioner Service Manual 3.2.12 P5---Sub-cooling protection on Cooling/Dry mode On Cooling or Dry mode, when IDU evaporator coil temperature IPT＜1℃ continuously for 3 min after compressor start up for 6 min, CPU will switch off outdoor unit and show P5 failure code. Display P5 Switch on unit after minutes...
  • Page 52 Air Conditioner Service Manual 3.2.13 P6---Overheating protection on Cooling mode On Cooling or Dry mode, when ODU condenser coil temperature OPT≥62℃ , MCU will switch off outdoor unit and show P6 failure code. Display ODU fan motor Fan motor Replace fan motor works normal? broken? P6 disappear?
  • Page 53 Air Conditioner Service Manual 3.2.14 P7---Overheating protection on Cooling mode ℃ On heating mode, when IDU evaporator coil temperature IPT≥62 , ODU PCB will switch off outdoor unit and show P7 failure code. Display P7 ODU fan motor Fan motor Replace fan motor works normal? broken?
  • Page 54 Air Conditioner Service Manual 3.2.15 P8---Outdoor Overtemperature/Under-temperature protection When environment temperature as below condition, the compressor will stop working, after 200s delay, the IDU will show P8 failure code. (1). On Cooling or Dry mode: ODU ambient temperature: OAT＜-20℃ or OAT＞63℃; (2).
  • Page 55 Air Conditioner Service Manual 3.2.16 F4---Cooling system Gas flow abnormal protection When compressor startup, unit will check the variation of IDU coil temperature. If there is mistake installer forgetting to open the 2-way or 3-way valve on ODU, the gas can’t flow in the cooling system, it will show F4 protection. Start Display F4 Check the 2-way...
  • Page 56 Air Conditioner Service Manual 3.2.17 F6 The Compressor Lack of phase / Anti-phase protection. If ODU PCB can’t test one, or even three phase of compressor current, it will show F6 protection. Display F6 Check compressor Re-connect wiring connector, is it well connected? Problem solved? The Compressor...
  • Page 57 Air Conditioner Service Manual 3.2.18 F7---Module temperature protection. IPM overtemperature protection, when IPM temperature more than 95℃, it will show F7. Display F7 Clean or adjust the gap IPM well contact Any dust or gap btw btw IPM and heat sink to heat sink? IPM &...
  • Page 58 Air Conditioner Service Manual 3.2.19 F8---4-Way Value Reversing abnormal On heating mode, if IDU Coil temperature tested lower than Room temperature 5℃ or even more after compressor works for 8min, unit will show F8 code. Display F8 the 4-way valve wiring connection Re-connect correct?
  • Page 59 Air Conditioner Service Manual 9.2.20 Fy--- Gas leakage protection After compressor works in high frequency for 9 min, if the temperature on IDU evaporator & ODU condenser has only a little variation comparing previous, but, the compressor discharge temperature on high level, then the unit will show Fy failure code.
  • Page 60 Air Conditioner Service Manual 4. Exploded view and parts list DS-9KIDR(W) Indoor Unit- Q’ty Part No. Part Name Remark 41109-000042 Installation Plate 41199-002735 Base 41101-000081 Vertical Vane Assembly 42004-000039 Cross Fan 42007-000001 Bearing Mount 92011-002804 Evaporator 41106-002371 Face Frame 41108-000066...
  • Page 61 Air Conditioner Service Manual DOS-9KIDR(W) Outdoor Unit- Q’ty Part No. Part Name Remark 42011-000127 Grille 41207-000029 Top cover 92011-000657 Condenser 41203-000054 Outdoor motor supporter 22001-000049 Outdoor motor 42004-000107 Propeller fan 41205-000121 Left grille supporter 41206-000054 Front plate 42011-000100 Fan guard 92014-000542 Compressor and accessories 92008-000209...
  • Page 62 Air Conditioner Service Manual DS-12KIDR(W) Indoor Unit- Q’ty Part No. Part Name Remark 41109-000042 Installation Plate 41199-002735 Base 41101-000081 Vertical Vane Assembly 42004-000039 Cross Fan 42007-000001 Bearing Mount 92011-002804 Evaporator 41106-002371 Face Frame 41108-000066 Screw Cover 41103-000101 Vane 42008-000037 Air Filter 42003-000001 Display PCB Box 31102-000084...
  • Page 63 Air Conditioner Service Manual DOS-12KIDR(W) Outdoor Unit- Q’ty Part No. Part Name Remark 42011-000127 Grille 41207-000029 Top cover 92011-000657 Condenser 41203-000054 Outdoor motor supporter 22001-000049 Outdoor motor 42004-000107 Propeller fan 41205-000121 Left grille supporter 41206-000054 Front plate 42011-000100 Fan guard 92014-000542 Compressor and accessories 92008-000209...
  • Page 64 Air Conditioner Service Manual DS-18KIDR(W) Indoor Unit- Q’ty Part No. Part Name Remark 41109-000041 Installation Plate 41102-000048 Base 41101-000067 Vertical Vane Assembly 41101-000193 Vertical Vane Connector 41103-000149 Vane 42004-000012 Cross Fan 42007-000001 Bearing Mount 92011-002777 Evaporator 41106-002356 Face Frame 41108-000066 Screw Cover 42008-000075 Air Filter...
  • Page 65 Air Conditioner Service Manual DOS-18KIDR(W) Outdoor Unit- Q’ty Part No. Part Name Remark 42011-000105 Grille 41207-000033 Top cover 92011-000748 Condenser 41203-000052 Outdoor motor supporter 22001-000096 Outdoor motor 42004-000104 Propeller fan 41205-000119 Left Plate 41206-000055 Front plate 42011-000089 Fan guard 92014-000357 Compressor and accessories 92008-000207 4-way valve...
  • Page 66 Air Conditioner Service Manual DS-24KIDR(W) Indoor Unit- Q’ty Part No. Part Name Remark 41109-000019 Installation Plate 41102-000002 Base 41101-000042 Vertical Vane Assembly 41507-000062 Vertical Vane Connector 41103-000142 Vane 42004-000002 Cross Fan 42007-000001 Bearing Mount 92011-002754 Evaporator 41106-002351 Face Frame 41108-000066 Screw Cover 42008-000001 Air Filter...
  • Page 67 Air Conditioner Service Manual DOS-18KIDR(W) Outdoor Unit- Q’ty Part No. Part Name Remark 42011-000128 Grille 41207-000028 Top cover 92011-000482 Condenser 41203-000046 Outdoor motor supporter 22001-000110 Outdoor motor 42004-000105 Propeller fan 41205-000117 Left grille supporter 41206-000047 Front plate 42011-000090 Fan guard 92014-000357 Compressor and accessories 92008-000207...
  • Page 68 Air Conditioner Service Manual DS-9KIDT-2(W) Indoor Unit- Q’ty Part No. Part Name Remark 41109-000042 Installation Plate 41199-002735 Base 41101-000081 Vertical Vane Assembly 42004-000039 Cross Fan 42007-000001 Bearing Mount 92011-002804 Evaporator 41106-002371 Face Frame 41108-000066 Screw Cover 41103-000101 Vane 42008-000037 Air Filter 42003-000016 Display PCB Box 31102-000085...
  • Page 69 Air Conditioner Service Manual DOS-9KIDT-2(W) Outdoor Unit- Q’ty Part No. Part Name Remark 42011-000127 Grille 41207-000029 Top cover 92011-000657 Condenser 41203-000054 Outdoor motor supporter 22001-000049 Outdoor motor 42004-000107 Propeller fan 41205-000121 Left grille supporter 41206-000054 Front plate 42011-000100 Fan guard 92014-000542 Compressor and accessories 92008-000209...
  • Page 70 Air Conditioner Service Manual DS-12KIDT-2(W) Indoor Unit- Q’ty Part No. Part Name Remark 41109-000042 Installation Plate 41199-002735 Base 41101-000081 Vertical Vane Assembly 42004-000039 Cross Fan 42007-000001 Bearing Mount 92011-002804 Evaporator 41106-002371 Face Frame 41108-000066 Screw Cover 41103-000101 Vane 42008-000037 Air Filter 42003-000016 Display PCB Box 31102-000085...
  • Page 71 Air Conditioner Service Manual DOS-12KIDT-2(W) Outdoor Unit- Q’ty Part No. Part Name Remark 42011-000127 Grille 41207-000029 Top cover 92011-000657 Condenser 41203-000054 Outdoor motor supporter 22001-000049 Outdoor motor 42004-000107 Propeller fan 41205-000121 Left grille supporter 41206-000054 Front plate 42011-000100 Fan guard 92014-000542 Compressor and accessories 92008-000209...
  • Page 72 Air Conditioner Service Manual DS-18KIDT(W) Indoor Unit- Q’ty Part No. Part Name Remark 41109-000041 Installation Plate 41102-000048 Base 41101-000067 Vertical Vane Assembly 41101-000193 Vertical Vane Connector 41103-000149 Vane 42004-000012 Cross Fan 42007-000001 Bearing Mount 92011-002777 Evaporator 41106-002356 Face Frame 41108-000066 Screw Cover 42008-000075 Air Filter...
  • Page 73 Air Conditioner Service Manual DOS-18KIDT(W) Outdoor Unit- Q’ty Part No. Part Name Remark 42011-000105 Grille 41207-000033 Top cover 92011-000748 Condenser 41203-000052 Outdoor motor supporter 22001-000096 Outdoor motor 42004-000104 Propeller fan 41205-000119 Left Plate 41206-000055 Front plate 42011-000089 Fan guard 92014-000357 Compressor and accessories 92008-000207 4-way valve...
  • Page 74 Air Conditioner Service Manual DS-24KIDT(W) Indoor Unit- Q’ty Part No. Part Name Remark 41109-000019 Installation Plate 41102-000002 Base 41101-000042 Vertical Vane Assembly 41507-000062 Vertical Vane Connector 41103-000142 Vane 42004-000002 Cross Fan 42007-000001 Bearing Mount 92011-002754 Evaporator 41106-002351 Face Frame 41108-000066 Screw Cover 42008-000001 Air Filter...
  • Page 75 Air Conditioner Service Manual DOS-24KIDT(W) Outdoor Unit- Q’ty Part No. Part Name Remark 42011-000128 Grille 41207-000028 Top cover 92011-000482 Condenser 41203-000046 Outdoor motor supporter 22001-000110 Outdoor motor 42004-000105 Propeller fan 41205-000117 Left grille supporter 41206-000047 Front plate 42011-000090 Fan guard 92014-000357 Compressor and accessories 92008-000207...
  • Page 76 Display box Air Conditioner Service Manual 5. Disassembly IDU & ODU 5.1. IDU Disassembly Steps Reference photo 1. Before disassembly The orginal status. 2. Disassembly front panel, display board and WIFI module. 显示盒 Display box A. Open front panel. B. Remove one screw and take the display box out from the panel.
  • Page 77 Air Conditioner Service Manual 4. Remove the electric control box cover Unfix one screw on the cover of electric 固 box, and remove the cover. 定 螺 screw 钉 5. Remove the filter Push the filter upwards a little, you can take it out from unit.
  • Page 78 Air Conditioner Service Manual 7. Disassembly the electric control box. 电控盒 Electric control box A. Remove the RT & IPT out from evaporator; B. Unscrew all the earth ground wirings on the evaporator. C. Take all the connectors out from PCB. D.
  • Page 79 Air Conditioner Service Manual 9. Disassembly the evaporator screws Screws + motor 螺钉/卡扣 螺钉 A. Unfix 2 screws of left side shown as cover picture. B. Unfix 2 screws of right side on motor cover/right support plate. C. Take the evaporator out from unit by uplifting the IUPUT/OUTPUT pipes slightly.
  • Page 80 Air Conditioner Service Manual 5.2 ODU Assembly Step Reference picture step1：Remove the PCB Cover , valve Cover and top cover 1). Unfix one screw on the PCB cover, you can take the cover out from unit. 2). Unfix one screw on the valve cover, you can take it out easily.
  • Page 81 Air Conditioner Service Manual step2：Disassemble the Fan Guard and Front Panel Unfix screws on front panel with fan guard, ODU middle separate plate and base plate, uplift front panel you can take it out from unit. step3：Disassemble the Left and Right plate. Unfix screws btw Right Plate and the Electric Box...
  • Page 82 Air Conditioner Service Manual step4：Disassemble the Axis Fan Blade Unscrew the fan blade nut, and take the blade out. step5：Disassemble the electric box Unfix screw btw Electric Box and motor supporter etc. loosen the wiring clamp, then you can take the control box out.
  • Page 83 Air Conditioner Service Manual step7：Disassemble the separate plate Unfix the screw btw separate plate and unit, and take it out step8：Disassemble the 2 and 3-way valve Unfix screw btw Valve plate and base, you can take the 2-way and 3-way valve out by welding.
  • Page 84 Air Conditioner Service Manual step10：Disassemble the compressor. Unscrew the nuts and take the compressor out. step11：Remove the fan motor and fan supporter. Unfix screws btw fan motor with supporter, and supporter with base plate. Note: Pay attention to the motor wiring, it can’t be taken out by force.
  • Page 85 75.2 84/85 84.2 Appendix 2 The Pipe length and Gas charging Connecting pipes size and length for installation Pipe size(Inch) Model Liquid DS-9KIDR(W)/ DOS-9KIDR(W) DS-9KIDT-2(W)/ DOS-9KIDT-2(W) DS-12KIDR(W)/ DOS-12KIDR(W), DS-12KIDT-2(W)/ DOS-12KIDT-2(W) DS-18KIDR(W)/ DOS-18KIDR(W) DS-18KIDT(W)/ DOS-18KIDT(W) DS-24KIDR(W)/ DOS-24KIDR(W) DS-24KIDT(W)/ DOS-24KIDT(W) Outdoor unit...
  • Page 86 Air Conditioner Service Manual Appendix 3 Pipes Flaring Main cause for gas leakage is due to defect in flaring work. Carry out correct flaring work in the following procedure. A. Cut the pipes and the cable. 1) Use the piping kit accessory or the pipes purchased locally. 2) Measure the distance between the indoor and the outdoor unit.
  • Page 87 Air Conditioner Service Manual Appendix 4 THERMISTOR TEMPERATURE CHARACTERISTICS 1). Indoor unit and outdoor exchange temperature and outside air temperature sensor temperature characteristics TEMP. Resistance Voltage of TEMP. Resistance Voltage of TEMP. Resistance Voltage of (℃) (k Ohm) resistance (℃) (k Ohm) resistance (℃)
  • Page 88 Air Conditioner Service Manual TH1: indoor room temperature sensor and outside air temperature sensor TH2: indoor exchange temperature sensor and outside exchange temperature sensor Before measuring resistance, disconnect connectors as shown above. Outdoor unit sensor temperature characteristics TEMP. R min R(t) R max TEMP.
  • Page 89 Air Conditioner Service Manual 63.74 70.48 77.87 6.309 6.655 7.013 1.073 1.12 1.168 60.69 67.05 6.08 6.409 6.748 1.042 1.089 1.136 57.81 63.8 70.34 5.861 6.173 6.495 1.013 1.058 1.104 55.08 60.72 66.88 5.651 5.947 6.253 0.9833 1.028 1.074 52.49 57.81 63.61 5.449...

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