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Daewoo DSC-1245FL Service Manual

Manual is about: WALL MOUNTED SPLIT-TYPE AIR CONDITIONERS

Summary of DSC-1245FL

  • Page 1

    Daewoo wall mounted split-type air conditioners service manual no.20160824 models dsc-1245fl dsc-1285fl dsc-1285flh contents 1. Important notice 2. Product dimensions 3. Refrigeration cycle diagram 4. Operation details 5. Wiring diagram 6. Explosion view and part lists 7. Precaution 8. Names of part...

  • Page 2: 1. Important Notice

    Air conditioner service manual 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. The manufacturer or se...

  • Page 3: Product Dimensions

    Air conditioner service manual 2. Product dimensions indoor unit: outdoor unit: model a b c d e f g h i j k 12k 770 240 180 700 552 256 439 302 277.8 48 55 2.

  • Page 4: Refrigeration Cycle Diagram

    Air conditioner service manual 10 3. Refrigeration cycle diagram cooling only heat pump capillary compressor accumulator heat exchange (condenser) heat exchange (evaporator) 2-way valve liquid side 3-way valve gas side cooling heating gas side 3-way valve liquid side 2-way valve heat exchange (evapo...

  • Page 5: 4.Operation Details

    Note: each mode and relevant function will be further specified in following pages. 4.Operation details remote controller 1 2 4 3 5 6 9 7 mode button eco button fan speed button temp up button timer button sleep button temp down button to select the mode of operation . In cooling mode,press this but...

  • Page 6: Electronic Controller

    Air conditioner service manual electronic controller notes: rt-------room temperature. Ipt------indoor pipe temperature. St------indoor setting temperature. Opt---outdoor pipe temperature. Crt---compensated room temperature 1. Automatic mode 1) the initial rt determines a/c working mode and the sett...

  • Page 7

    Air conditioner service manual a. Indoor fan motor can operate by automatic, low, middle, or high airflow speed circularly. B. Indoor fan motor automatic airflow speed control, it works as shown in figure 1: hi mid lo rt－st 1°c 2°c 4°c figure 1 cooling automatic airflow when the temperature changing...

  • Page 8

    Air conditioner service manual the four-way valve will close 2min later after shut-down the compressor. 6) defrosting function: during defrosting, once mode changing, economic operation or temperature setting signals received, the buzzer and display will make response immediately, but the other oper...

  • Page 9

    Air conditioner service manual less than 23°c (cold air prevention wind temperature) when the fan stops running (including temperature dropping when compressor operating, not including the compressor’s starting up course), and the machine runs into defrosting according to any one condition as below....

  • Page 10

    Air conditioner service manual (2) the conditions of auxiliary electric heating works (all the following conditions must be met) a. The compressor runs for more than 3min； b. Indoor fan runs normally； c. Not in defrosting state; d. Auxiliary electric heating is turned off for more than 30s。 e. St- r...

  • Page 11

    Air conditioner service manual meanwhile indoor fan motor runs in high-speed, and stepping vane swinging as well. 30min later the a/c goes into automatic mode under the same operation manner, the set temperature to be 23°c, and the rotate speed of indoor fan motor automatic control, stepping vane sw...

  • Page 12

    Air conditioner service manual conditions, the fan speed is regulated according to the coil temperature within 2 min, 2 min later the indoor fan motor stops. If the compressor starts up within 2 min, then operating according to figure 5. Under heating process, while the compressor stop (including st...

  • Page 13

    Air conditioner service manual the indoor fan motor stops, meanwhile, the compressor, outdoor fan motor, four-way valve and/or auxiliary electric heater etc. Also cut down. The indoor fan motor restarts again 10 seconds later, if still there is no feedback signal of rotated speed within 5 seconds, t...

  • Page 14: 5. Wiring Diagram

    Air conditioner service manual 5. Wiring diagram model: dsc-1245fl dsc-1285fl indoor unit: ¦ È outdoor unit 13.

  • Page 15

    Air conditioner service manual model: dsc-1285flh indoor unit: outdoor unit 14.

  • Page 16: Explosion View

    Air conditioner service manual 6. Explosion view and parts explosion view mode: dsc-1245fl dsc-1285fl dsc-1285flh indoor unit: 22 27 23 25 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 24 20 26 21 15.

  • Page 17

    Air conditioner service manual model: dsc-1245fl dsc-1285fl outdoor unit: 10 11 12 13 9 8 6 7 5 17 14 15 16 18 19 24 23 22 21 20 4 3 2 25 1 26 16.

  • Page 18

    Air conditioner service manual model: dsc-1285flh outdoor unit: 11 12 13 9 10 8 7 6 5 18 14 15 17 16 20 19 21 22 24 23 25 4 3 2 26 1 27 17.

  • Page 19: Parts List

    Air conditioner service manual parts list indoor unit: model: dsa-1285fl dsa-1885fl dsa-2485fl no. Part no. Part name q’ty remark 1 installation plate 1 2 base 1 3 vertical vane assembly 2 4 cross fan 1 5 bearing mount 1 6 evaporator 1 7 face frame 1 8 screw cover 2 9 air filter 2 10 display pcb box...

  • Page 20

    Air conditioner service manual outdoor unit: model: dsc-1245fl dsc-1285fl no. Part no. Part name q’ty remark 1 grille 1 optional 2 top cover 1 3 condenser 1 4 outdoor motor supporter 1 5 outdoor motor 1 6 propeller fan 1 7 left grille supporter 1 8 front plate 1 9 fan guard 1 10 capillary assembly 1...

  • Page 21

    Air conditioner service manual outdoor unit: model: dsc-1285flh no. Part no. Part name q’ty remark 1 back grille 1 optional 2 top cover 1 3 condenser 1 4 outdoor motor supporter 1 5 outdoor motor 1 6 propeller fan 1 7 left grille supporter 1 8 front plate 1 9 fan guard 1 10 compressor and it accesso...

  • Page 22: 7. Precaution

    Air conditioner service manual 7. Precaution 7.1 safety rules and recommendations for the installation read this guide before installing and using the appliance. During the installation of the indoor and outdoor units the access to the working area should be forbidden to children. Unforeseeable acci...

  • Page 23

    Air conditioner service manual 7.2 safety rules and recommendations for the user do not try to install the conditioner alone; always contact specialized technical personnel. Cleaning and maintenance must be carried out by specialized technical personnel. In any case disconnect the appliance from the...

  • Page 24: 8. Names Of Parts

    Air conditioner service manual indoor unit no. Name 1 front panel 2 air filter 3 special filter(option) 4 display pcb 5 vertical vane 6 horizontal vane 7 remote controller 8. Names of parts outdoor unit no. Name 8 air outlet grille 9 electronic box cover 10 2-way valve 11 3-way valve 1 2-3 4 6 5 7 i...

  • Page 25: 9. Installation Manual

    Air conditioner service manual 9. Installation manual 9.1 information for installation connecting pipe model pipe size(inch) liquid gas dsc-1245fl 1/4’’ 1/2 dsc-1285fl 1/4 1/2 dsc-1285flh 1/4 1/2 mode standard length: m refrigerant piping max. Length: m a additional refrigerant calculation: ×g=20g/m...

  • Page 26

    Air conditioner service manual 9.2 installation details indoor unit  install the indoor unit level on a strong wall that is not subject to vibrations  the inlet and outlet ports should not be obstructed: the air should be able to blow all over the room.  do not install the unit near a source of h...

  • Page 27

    Air conditioner service manual install the indoor unit in the room to be air conditioning, avoiding to installation in corridors or communal areas. Install the indoor unit at a height of at least 2.5m from the ground. To install, proceed as follows: 9.2.1 installation of the mounting plate. 1) by us...

  • Page 28

    Air conditioner service manual 6).The plug must be accessible also after the appliance has been installed so that it can be pulled out if necessary. 7) .An efficient earth connection must be ensured. 8).If the power cable is damaged, it must be replaced by an authorized service centre. 9.2.4 refrige...

  • Page 29

    Air conditioner service manual 4).If the piping is installed to the right, the pipes, power cable and drain hose must be lagged and secured onto the rear of the unit with a pipe connection.  insert the pipe connection into the relative slot.  press to join the pipe connection to the base. 9.2.8 el...

  • Page 30

    Air conditioner service manual 10. Trouble shooting 10.1 product does not operate at all. Power supply voltage check connector contact check pcb assy check power input voltage on driving load terminal. Display pcb connector power transformer output voltage product input voltage ac about 12±3v 29.

  • Page 31

    Air conditioner service manual 10.2 indoor fan does not operate at all (e6). Connector contact motor-related parts motor detail check operation mode check pcb ass'y check check: motor driving circuit relay output check: motor output connector motor capacitor check: motor bearing inserted state fan(b...

  • Page 32

    Air conditioner service manual 10.3 compressor or outdoor fan does not operate at all. Re-input after power off set the desired temperature of remote controller to be lower by 2°c or over than room temperature, and start the cooling operation. Does not operate at all. Repeat running/stopping at a sh...

  • Page 33

    Air conditioner service manual 10.4 vane does not operate at all. 10.5 cooling/heating conversion is disable. Vane bending, structures interference check connector check (broken/short circuit/mal- connection) vane motor check pcb ass'y check(vane motor driving circuit) replace the vane motor replace...