How it Works
Samsung
Loading...
AS07A5MA

Samsung AS07A5MA, AS12ABMCF, US07A5MA, AS07A6MA, US07A6MA Service Manual

...
Manual
SERVICE
SPLIT TYPE AIR CONDITIONER
Indoor Unit
AS07A5(6)MA AS09A5(6)MAF AS12AA(B)MCF
Outdoor Unit
US07A5(6)MA US09A5(6)MAF US12AA(B)MCF
Safety Precautions
The following safety precautions must be taken when using your air conditioner.
WARNING
I
NSTALLING THE UNIT
POWER SUPPLY LINE,
FUSE OR CIRCUIT BREAKER
Risk of electric shock. • Can cause injury or death. • Disconnect all remote electric power supplies before servicing, installing or cleaning. • This must be done by the manufacturer or its service agent or a similar qualified person in order to avoid a hazard.
◆ The unit should not be installed by the user. Ask the dealer or authorized company to install the units except room air conditioners for the U.S.A and Canada area.
◆ If the unit is installed improperly, water leakage, electric shock or fire may result.
◆ The air conditioner must be installed in accordance with national wiring regulations and safety regulations wherever applicable.
◆ Mount with the lowest moving parts at least 8.2ft(2.5m) above the floor or grade level. (If applicable)
◆ The manufacturer does not assume responsibility for accidents or injury caused by an incorrectly installed air conditioner. If you are unsure about installation, contact an installation specialist.
◆ When installing the built-in type air conditioner, keep all electrical cables such as the power cable and the connection cord in pipe, ducts, cable channels e.t.c to protect them against liquids, outside impacts and so on.
◆ If the power cord of this air conditioner is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
◆ The unit must be plugged into an independent circuit if applicable or connect the power cable to the auxiliary circuit breaker. An all pole disconnection from the power supply must be incorporated in the fixed wiring with a contact opening of >3mm.
◆ Do not use an extension cord with this product.
◆ If the unit is equipped with a power supply cord and a plug, the plug must
be accessible after installation.
◆ This appliance must be installed accordance with the national wiring regulations.
2
Contents
ΙΙ
DISASSEMBLE AND REASSEMBLE
1. Indoor unit
2. Outdoor unit
ΙΙΙΙ
ET UP THE OPTION CODE 10
S
ΙΙΙΙΙΙ
TROUBLESHOOTING
1. Items to be checked first
2. Abnormal diagnosis by symptom
ΙΙΛΛ
ASSEMBLY DRAWING AND PART’S LIST
1. Indoor unit
2. Outdoor unit
3. Assembly control in
4. Assembly control out
ΛΛ
REFRIGERATING CYCLE BLOCK DIAGRAM 31
ΛΛ
ΙΙ
PERFORMANCE CURVE 32
4 6
13 14
22 24 28 29
ΙΙΙΙ
ΛΛ
WIRING DIAGRAMS
1. Indoor unit
2. Outdoor unit
ΛΛΙΙΙΙΙΙ
S
CHEMATIC
1. Indoor unit
2. Outdoor unit
DIAGRAMS
SPLIT TYPE
AIR CONDITIONER
41 42
44 45
3
ΙΙ
Disassemble and reassemble
Stop operation of the air conditioner and remove the power cable before repairing the unit.
1 Indoor unit
If you disassemble the heat exchanger, you must pump down at first.
No. Part Procedure Remark
1
Front Panel
1) Stop the operation of the air conditioner and block the main power.
2)Separate the tape from the front panel.
3)Contract the second finger to the left, and right handle. And pull the inlet grille to open.
4)Take the left and right filter out.
*Taking off the deodorizing filter.
5)Loosen one of the right screw and separate the terminal cover.
6)Loosen three screws of front panel.
7)Pull the upper left, center and right of discharge softly so that the outside cover is pulled out.
8)Pull softly the lower part of discharge and push it up.
Caution
Assemble the front panel and fix the hooks of left, center and right.
4
No.
Part
Procedure Remark
2
3
4
Electrical
Parts
(Main PCB)
Assembly Tray
Drain
Heat
Exchanger
1) Take all the connector of PCB on the upper part. (Included Power cord)
2) Separate the outdoor unit connection wire from the terminal block.
3) If you pull out the main PCB up, it will be taken out.
1) Separate the drain hose from the extension drain hose.
2) Pull tray drain out from the back body.
1) Loosen two ground screws at the right side.
2) Separate the connection pipe.
3) Separate the holder pipe at the rear side.
4) Loosen three screws at the right and left side.
5) Lift the heat exchanger up a little to push the upper side to separate it from the indoor unit.
5
Fan Motor and
Cross Fan
1) Loosen two screws and separate the motor holder.
2) Loosen the screw of fan motor.
(By use of M3 wrench)
3)Separate the fan motor from the fan.
4)Separate the fan from the left holder
bearing.
5
ΙΙ
Disassemble and reassemble (cont’d)
2 Outdoor unit
■ US07A5(6)MA/US09A5(6)MAF
No. Part Procedure Remark
1
Common Work
1)Loosen screws and separate the cover E-part.
2)Separate the connection wire from the terminal block.
3)Loosen five screws and separate the upper cabinet.
4) Loosen the screw of the control box.
5) Loosen nine screws and separate the
side cabinet.
2
6
Fan Motor
1) Loosen four screws and separate Guard Fan from the front cabinet.
No. Part Procedure Remark
2) Remove the nut flange (Turn to the clockwise).
3)Separate the fan.
4)Loosen four screws to separate the motor.
3
4
Heat
Exchanger
Compressor
1)Release the refrigerant.
2)Loosen two screws of left and right side.
3)Disassemble the inlet and outlet pipe by welding.
4)Separate the heat exchanger.
1)Release the refrigerant.
2)Loosen the nut on the terminal cover and open the terminal cover.
3)Separate the OLP and the compressor wire.
4)Disassemble the inlet and outlet pipe of compressor by welding.
5)Disassemble the inlet and outlet pipe of condenser by welding.
6) Loosen three bolts of the lower part.
7)Separate the compressor.
7
ΙΙ
Disassemble and reassemble(cont’d)
■ US12AA(B)MCF
No. Part Procedure Remark
1
Common Work
1) Loosen a screw and separate the cover E-part.
2)Separate the connection wire from the terminal block.
3) Loosen thirteen screws and separate the front cabinet.
4) Loosen a screw of the control box.
5) Loosen four screws and separate the side cabinet.
8
No. Part Procedure Remark
2
3
Fan and Motor
Heat Exchanger
1) Remove the nut flange (Turn to the clockwise).
2) Separate the fan.
3) Loosen four screws to separate the motor.
4) Loosen five screws and separate the motor bracket from the base.
1)Release the refrigerant.
2)Loosen screws of left and right side.
3)Disassemble the inlet and outlet pipe by welding.
4)Separate the heat exchanger.
4
Compressor
1)Release the refrigerant.
2)Open the terminal cover of compressor and unscrew the connection terminal.
3)Separate the OLP and the compressor wire.
4)Disassemble the inlet and outlet pipe of compressor by welding.
5) Loosen three bolts of the lower part.
6) Separate the compressor.
9
ΙΙΙΙ
Set up the option code
The method for setting up the model option with the remote control
◆ It is necessary to set up option codes after replacing the main PCB with service parts.
Make sure that you can set up option codes of the remote control after replacing the main PBA. Otherwise, the unit won’t be working properly and all LED lamps on display will be flickering.
Step 1
Step 2
NNNNoooottttee
Preparing for the remote control to the main PCB option set.
1. Remove the battery from the remote control.
2. Press the temperature button simultaneously and insert the battery again.
3. Make sure the remote control display shown as .
Preparing for the remote control option set.
ee
In case that the wrong letter has been selected; continue to press the button until the correct letter appears.
1. If the number “ ”appears on the display, proceed to the second stage.
2. Every time you press the 1) and 7) button, “ ” and “ ” continue to appear.
3. Every time you press the 2), 3), 4), 5), 6), 8), 9), 10), 11), 12) button, the number increases from ~ ( , , , , , , , , , ) and , , , , , in order.
1) If the first number is , it is correct. Otherwise, press the button until appears.
2) When pressing the button ~ on the display, select one of them.
10
3) When pressing the button ~ on the display, select one of them.
4) When pressing the button ~ on the display, select one of them.
5) When pressing the button ~ on the display, select one of them.
6) When pressing the button ~ on the display, select one of them.
7) If the first number is , it is correct. Otherwise, press the button
until appears.
8) When pressing the button ~ on the display, select one of them.
9) When pressing the button ~ on the display, select one of them.
10) When pressing the button ~ on the display, select one of them.
11) When pressing the button ~ on the display, select one of them.
12) When pressing the button ~ on the display, select one of them.
Step 3
Step 4
Step 5
NNNNoooottttee
Reconfirming the option set after completing
Example : 000000-1700b7
Press the button for the “ ” mode and the display will be shown as . Press the button for the “ ” mode and the display will be shown as .
Pressing the (On/Off)button
When pressing the (On/Off)button in the direction of the remote control for unit, it sounds beep or ringing and the first LED lamp on the left side is flickering at the same time, then the input option is completed. If it doesn’t sound ringing, try again by pressing the (On/Off)button.
Testing the unit
1 Remove the battery from the remote control.
2. Insert the battery into the remote control.
3. Press the (On/Off)button in the direction of the remote control for set.
Error mode
ee
1. If all lamps of the indoor units are flickering, plug out and in again and press the (On/Off) button again.
2. If the unit doesn’t work properly or all lamps are continuously flickering after setting the option
code, check that the option code is set properly for its own model.
11
ΙΙΙΙ
Set up the option code(cont’d)
A table of the option code
Model
AS07A5MA
AS07A6MA AS09A5MAF AS09A6MAF
AS12AAMCF AS12ABMCF
Option code
010000-1700b7 000000-1700b7 010000-1700Fb 000000-1700Fb 010000-170340 000000-170340
12
ΙΙΙΙΙΙ
Troubleshooting
1 Items to be checked first
1) The input voltage should be voltage rating within ±10% range. The air conditioner may not operate properly if the voltage is out of this range.
2) Is the connection cable linking the indoor unit and the outdoor unit properly? The indoor unit and the outdoor unit shall be linked by five cables. Check the terminals if the indoor unit and outdoor unit are properly linked by the same number of cables. Otherwise the air conditioner may not operate properly.
3) When a problem occurs due to the contents illustrated in the table below, it is not a symptom related to the malfunction of the air conditioner.
No.
The STD operation indicator, LED blinks when a
1
power plug of the indoor unit is plugged in at first. In the Cool mode, the compressor does not operate
at a room temperature higher than the setting temperature while the indoor fan operates.
2
The Fan speed operating is not allowed in the Auto
3
or Dry mode.
Compressor stops operating intermittently in the Dry
4
mode.
Timer LED of the indoor unit lights up and the air conditioner does not operate.
5
The compressor stops intermittently in the Cool or Dry mode, and the fan speed of the indoor unit
6
decreases.
Operation of air conditioner
It indicates power is on. The LED stops blinking if the On/Off button on the remote control is pushed.
It happens after three minutes when the compressor is reoperated. The same phenomenon occurs when a power is on. As a phenomenon that the compressor is reoperated after three minutes, the indoor fan is adjusted automatically with reference to a temperature of the air.
The speed of the indoor fan is set to LL in the Dry mode. The Fan speed is five steps are selected automatically in the Auto mode.
The compressor is controlled automatically in the Dry mode depending on the room temperature and humidity.
The timer is being activated and the unit is in the ready mode. The unit operates normally if the timer operation is cancelled.
The compressor stops intermittently or the fan speed of the indoor unit decreases to prevent inside/outside air from freezing depending on the inside/outside air temperature.
Explanation
4) Indoor unit observes operation condition of the air conditioner and displays self diagnosis on the display panel.
No.
STD LED blinking (1Hz)
1
TIMER LED blinking (1Hz)
2
STD and TIMER LED blinking (1Hz)
3
NATURE LED blinking (1Hz)
4
All LED blinking (1Hz)
5
Display
Self Diagnosis
Restore from power failure (input initial power) Indoor unit Room sensor Error (open or short) Indoor unit heat exchanger temperature sensor Error (open or short) Indoor fan malfunctioning (for speed is below 450rpm) Option Error
13
ΙΙΙΙΙΙ
Troubleshooting (cont’d)
2 Abnormal diagnosis by symptom
1. No Power - Initial diagnosis
1. No Power - Initial diagnosis
1) Checklist :
(1) Is input voltage normal? (2) Is AC power linked correctly? (3) Is output voltage of DC regulator IC KA78L05 (IC02) normal? (4.5VDC-5.5VDC)
2) Troubleshooting procedure
Remove the power cord and plug in
again in approx. five seconds
14
YES
Replace PCB
display
Is DC voltage of PCB
display normal?
NO
Is voltage rating within ±10%
range applied to the primary
side(~,~) of the “BD71”?
NO
Check linkage between
a power cord and
a terminal tap
Check fuse
Does 325VDC appear in
the secondary side (+, -)
of “BD71”?
YESNO
Replace
SMPS PARTS
Replace resonator (X301)
Is operation normal?
YES
OK
NO
Does the lamp blink?
Does it start operating when
you push the On/Off button
on the remote control?
Is transmission display of the
remote control unit blinking?
Does the ‘beep’ sound from the
NO
Is DC voltage of the PCB module
Are voltages of #33 (IC04 : compressor)
of Micom normal? 5VDC
Is voltage of #32 (IC04 : indoor fan) of
DC5V
Is voltage of #10(IC04) terminal of Micom normal?
Is voltage of #9(IC04) terminal of Micom normal?
Is voltage of #3(IC04) terminal of
Are voltages of #12(IC04) and
NO
NO
#11(IC04) of Micom normal?
YES
NO
YES
main unit?
YES
normal?
YES
Micom normal?
10ms
NO
0VDC 5VDC
YES
Micom normal?
10ms
YES
250ns
YES
Replace
Micom
YES
NO
NO
YES
NO
NO
Normal
Refer to remote control
unit abnormal diagnosis
Replace PCB
module
.
Are voltages of RY71(Compressor)
normal? DC12V
Is voltage of SS71(indoor fan)?
YES
Check connections
of compressor
and indoor fan.
Is output voltage of ICO2 normal?
YES
Check PCB pattern
Replace the main PCB
Is voltage output terminal of
PC814A(PC02) normal?
YES
OK
Replace
RY71 and
SS71
Replace ICO2
NO
Replace PC814A(PC02)
NO
NO
Loading...
+ 32 hidden pages
Buy Points How it Works FAQ Contact Us Questions and Suggestions Privacy Policy Cookie Policy Terms of Use