SAMSUNG SH07AWH, X split-system air conditioner Service Manual
Below you will find brief information for split-system air conditioner SH07AWH. This manual provides instructions on operating and installing your split-system air conditioner, as well as information on troubleshooting common problems. The manual also includes exploded views and parts lists, a block diagram, and a wiring diagram.
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DB98_21337A_co 05/1/4 1:45 AM Page 3
ROOM AIR CONDITIONER
INDOOR UNIT
SH07AWH
OUTDOOR UNIT
SH07AWHX
SERVICE Manual
AIR CONDITIONER CONTENTS
1. Product Specifications
2. Operating Instructions & Installation
3. Disassembly and Reassembly
4. Refrigerating Cycle Diagram
5. Set Up the Model Option
6. Troubleshooting
7. Exploded Views and Parts List
8. Block Diagram
9. Wiring Diagram
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1. Product Specifications
1-1 Table
Model
Item
Type
Performance
Power
Size
Cooling kW
Heating
Dehumidifying kW
|/h
Cooling
Air Volume m 3 /min
Heating
Cooling
Noise dB
Heating
Cooling
Energy Efficiency Ratio W/W
Heating
Power ø-V-Hz
Power Consumption
Operating Current
Power Factor
Cooling
Heating
Cooling
Heating
Cooling
Heating
W
A
%
Starting Current
Power Cord
Outer Dimension
Weight(Net)
Refrigerant Pipe
Drain Hose
Length
Number of Core Wire
Capacity A
A m
Width x Height x Depth
Liquid
Gas mm inch kg mm x L(m) mm x L(m)
D x L(mm)
Type
Compressor
Motor
Type
Rated Output
Oil Type
Type
Blower
Motor
Type
Rated Output W
Heat Exchanger
Refrigerant Control Unit
Freezer Oil Capacity
Refrigerant to Change(R410A)
Protection Device(OLP)
Cooling Test Condition
Maximum Operation Condition cc g
Indoor unit
SH07AWH
Outdoor unit
Wall-mounted
2.25
2.35
1.0
5.3
5.8
37
37
19
19
49
49
2.81
3.22
1-220/240-50
800
730
3.6
3.3
96.6
96.2
17
-
-
250V-10 / 16A
728x255x155 660x470x240
28.6x10.0x6.1
26.0x18.5x9.5
7.0 25.5
ø6.35 x 7.5
ø9.52 x 7.5
ø18 x 2,000
Rotary
Induction Motor(PSC)
FREOL A 68ES-T, POLYOL ESTER
Cross-flow steel
Propeller steel
11
2ROW 10STEP
20
1ROW 20STEP
CAPILLARY TUBE
280
490
RBC12126-12500
INDOOR UNIT : DB27˚C WB19˚C OUTDOOR UNIT : DB35˚C WB24˚C
INDOOR UNIT : DB32˚C WB23˚C OUTDOOR UNIT : DB43˚C WB26˚C
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1-2 Pressure Graph
9
8
11
10
7
20 30
Outdoor drybulb temperature [deg C]
30.6/22.5
27/19
21.5/14.6
40
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2. Operating Instructions & Installation
2-1 The Feature of Key in remote control
No
1
2
BUTTON FUNCTION
On/Off & Timer Set/Cancel button.
Press the button to stop and run the air conditioner or set up On/Off timer.
Mode selection button.
Each time you press this button,
Mode is changed in the following order.
: Auto Mode
: Cool Mode
: Dry Mode
: Fan Mode
: Heat Mode
3
4
5
6
7
8
9
Samsung Electronics
(UP)
(DOWN)
Temperature adjustment button(UP).
To increase the temperature by the pressing the temperature button.
Temperature adjustment button(DOWN).
To decrease the temperature by the pressing the temperature button.
Turbo/Sleep mode selection button.
Press the button one or more times until appears. The air conditioner cools or heats the room as quickly as possible. After 30minutes, the air conditioner is reset automatically to the previous mode.
Turbo/Sleep mode selection button.
Press the button one or more times until appears. The sleep timer can be used when you are cooling or heating your room to switch the air conditioner off automatically after a period of six hours.
Fan speed adjustment button.
Each time you press this button,
FAN SPEED is changed in the following order.
Swing button.
It adjusts the airflow to upward and downward.
On Timer button.
The On Timer enables you to switch on the air conditioner automatically after a given period of time that is from 30 minutes to 24 hours.
To cancel, press the (Set/Cancel) button.
Off Timer button.
The Off Timer enables you to switch off the air conditioner automatically after a given period of time that is from 30 minutes to 24 hours.
To cancel, press the (Set/Cancel) button.
Energy Saving button.
If you wish to save energy when using your air conditioner, select the Energy saving mode with the button.
3
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2-2 Details for Operation Property
1. AUTO MODE : In this mode, operation mode(COOL,
HEAT) is selected automatically by the room temperature of initial operation.
Room Temp Operation Type
Tr
≥ 21°C+∆T
Cool Operation (Set Temp:24˚C+
∆T)
21°C+ ∆T>Tr Heat Operation (Set Temp:22˚C+ ∆T)
Operation Type
Cool Operation
Room Temp.
Tr
≥ 25°C+∆T
Compressor ON
Tr
≥ 24°C+∆T
Compressor OFF
∆T= -1°C, -2°C, 0°C, +1°C, +2°C
∆T is controlled by setting temperature up/down key of remote control
2. COOL MODE : The unit operates according to the difference between the setting and room temperature.
(18°C~30°C)
3. HEAT MODE(In case of Heat pump model) :
The unit operates according to the difference between the setting and room temperature.(16°C~30°C)
*Prevention against cold wind : In order to prevent the cool air from flowing out at the heat mode, the indoor fan does not operate or operates very slowly in the following cases. At this time, the indoor heat exchanger will be preheating.
- For 3~5 minutes after the initial operation
- For deicing operation
- The operation of an indoor fan in accordance with the temperature of an indoor heat exchanger
The temperature of indoor heat exchanger below 28˚C
28˚C~below 34˚C
34˚C~below 40˚C above 40˚C
Indoor fan speed off
LL Speed
L Speed
Setting Speed
*High temperature release function : It is a function to detect an outdoor overload by the sensor of an indoor heat exchanger and to turn the outdoor fan or the compressor ON/OFF for safety.
*Deice : Deicing operation is controlled by indoor unit's heat exchanger temperature and accumulating time of compressor's operation.
Deice ends by sensing of the processing time by deice condition.
4
4. DRY MODE : Has 3 states, each determined by room temperature.
The unit operates in DRY mode.
*Compressor ON/OFF Time is controlled compulsorily(can not set up the fan speed, always breeze).
*Protective function : Low temperature release.
(Prevention against freeze)
5. TURBO MODE : This mode is available in AUTO, COOL,
HEAT, DRY, FAN MODE.
When this button is pressed at first, the air conditioner is operated "powerful" state for 30 minutes regardless of the setting temperature, room temperature.
When this button is pressed again, or when the operating time is 30 minutes, turbo operation mode is canceled and returned to the previous mode.
*But, if you press the TURBO button in DRY or FAN mode that is changed with AUTO mode automatically.
6.
SLEEP MODE : Sleep mode is available only in COOL or
HEAT mode.
The operation will stop after 6 hours.
*In COOL mode : The setting temperature is automatically raised by 1°C each 1hour When the temperature has been raised by total of 2°C, that temperature is maintained.
*In HEAT mode : The setting temperature is automatically dropped by 1°C each 1hour.
When the temperature has been dropped by total of 2°C, that temperature is maintained.
7. FAN SPEED : Manual (3 step), Auto (4 step)
Fan speed automatically varies depending on both the difference between setting and the room temperature.
8.
COMPULSORY OPERATION :
For operating the air conditioner without the remote control.
*The operating is the same function that AUTO MODE in the remote control.
9.
SWING : BLADE-H is rotated vertically by the stepping motor.
*Swing Set : Press the button under the remote control is displayed on LCD the and the blades move up and down. If the one more time press the button, blades location is stop.
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10. SETTING THE ON/OFF TIMER. :
*ON TIMER : The On Timer enables you to switch on the air conditioner automatically after a given period of time.
You can set the period of time from 30 minutes to 24 hours.
*OFF TIMER : The Off Timer enables you to switch off the air conditioner automatically after a given period of time. You can set the period of time from 30 minutes to
24 hours.
11. BUZZER SOUND : Whenever the On/Off button is pressed or whenever change occurs to the condition which is set up or select, the compulsory operation mode, buzzer is sounded "beep".
Operating Instructions & Installation
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2-3 Installation
2-3-1 Before Installation
Keep the air conditioner drain hose outlet and inlet free from its surroundings.
In case of breakdown, keep the symmetry and fix it to prevent vibration.
The pipe length shall meet the standard as far as possible.
2-3-2 Installation Procedure
■ Location
Install the product in an area to guarantee the best cooling effect, convenience of piping and electric work, and inexistence of vibration or wind in the vicinity.
■ Wall Drilling
Drill the wall downward in a diameter of 60 to 65mm.
■ Fixing Indoor Unit & Outdoor Unit
Fix the air conditioner hard enough so that it can not fall to the ground. On the roadside, the outdoor unit shall be installed 2m above ground and kept away from pedestrians to prevent direct exposure to hot wind.
■ Pipe Spooling & Connecting
You shall cut the pipe straightly with a pipe cutter and grind all the burrs of the cut surface.
Pipe expansion may continue until the pipe surface becomes uneven or torn apart.
Be sure to use a torque wrench to tighten pipes or flare nuts.
<Torque & Depth>
Outer Diameter(D)
6.35mm(1/4")
12.70mm(1/2")
15.88mm(5/8")
Torque(kgf.cm)
140~170
380~420
440~480
Depth(A)
1.3mm
2.0mm
2.2mm
D
A
■ Leak Test
Put an inert gas like nitrogen in the outdoor unit pipe and put soap bubbles or other test liquids on the pipe surface for the leak test.
■ Drain Hose Connecting
Install the drain hose downward to drain water naturally. Be sure to pour water into the hose to check if it drains well.
■ Electric & Earth Work
Electric and earth work shall meet the "Electric Facility Technology Standard" and the "Internal Wire Regulation" of the Electric
Business Laws.
■ Inspection & Trial Run
Upon completion of the tests, you shall make a trial run while you explain the main functions of the air conditioner to finish the installation.
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2-4 Installation Diagram of Indoor Unit and Outdoor Unit
2-4-1 Air-Purge Procedure
1) Connect each assembly pipe to the appropriate valve on the outdoor unit and tighten the flare nut.
Outdoor unit
A
B
2) Connect the charging hose of low pressure side of manifold gauge to the packed valve having a service port (3/8" Packed valve) as shown at the figure.
Indoor unit
Gas pipe side C
Liquid pipe side D
3) Open the valve of the low pressure side of manifold gauge counter-clockwise.
4) Purge the air from the system using vacuum pump for about 30 minutes.
- After that, please recheck that pressure is stabilization.
- Close the valve of the low pressure side of manifold gauge clockwise.
- Remove the hose of the low pressure side of manifold gauge.
5) Set valve cork of both liquid side and gas side of packed valve to the open position.
6) Mount the valve stem nuts to the 2-Way and
3-Way valve. And mount the service port cap to
3-Way valve.
7) Check for gas leakage.
- At this time, especially check for gas leakage from the 3-Way valve’s stem nuts, and from the service port cap.
Vacuum Pump
Valve stem
B
(liquid)
Stem cap
A
(gas)
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Operating Instructions & Installation
2-4-2 Refrigerant Refill(R410A)
Refill an air conditioner with refrigerant when refrigerant has been leaked at installing or using.
1) Purge air(for new installation only).
2) Turn the 3-Way valve clockwise to close, connect the pressure gauge (low pressure side) to the service valve, and open the 3-Way valve again.
Compound gauge
3) Connect the tank to refill with refrigerant.
4) Set the unit to cool operation mode.
For mounting other and of hose when not in use
5) Check the pressure indicated by the pressure gauge(low pressure side).
* Standard pressure is should be 9.0~10.0kg/cm 2 in a regular, high operation mode.
Suspension hook
High pressure gauge
Hand wheel
Finger tight fittings
Connected to high pressure side
Charging line
R410A
6) Open the refrigerant tank and fill with refrigerant until the rated pressure is reached.
* It is recommended not to pour the refrigerant in too quickly, but gradually while operating a pressure valve.
7) Stop operation of the air conditioner.
8) Close the 3-Way valve, disconnect the pressure gauge, and open the 3-Way valve again.
9) Close the cap of each valve.
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Operating Instructions & Installation
2-4-3 ”Pump down” Procedure
Pump down will be carried out when an evaporator is replaced or when the unit is relocated in another area.
1) Remove the caps from the 2-Way valve and the
3-Way valve.
2) Turn the 3-Way valve clockwise to close and connect a pressure gauge (low pressure side) to the service valve, and open the 3-Way valve again.
2-Way Valve
3-Way Valve
3) Set the unit to cool operation mode.
(Check if the compressor is operating.)
4) Turn the 2-Way valve clockwise to close.
5) When the pressure gauge indicates "0" turn the
3-Way valve clockwise to close.
6) Stop operation of the air conditioner.
7) Close the cap of each valve.
Relocation of the air conditioner
• Refer to this procedure when the unit is relocated.
• Carry out the pump down procedure (refer to the details of 'pump down').
• Remove the power cord.
• Disconnect the assembly cable from the indoor and outdoor units.
• Remove the flare nut connecting the indoor unit and the pipe.
• At this time, cover the pipe of the indoor unit and the other pipe using a cap or vinyl plug to avoid foreign material entering.
• Disconnect the pipe connected to the outdoor unit.
At this time, cover the valve of the outdoor unit and the other pipe using a cap or vinyl plug to avoid foreign material entering.
• Make sure you do not bend the connection pipes in the middle and store together with the cables.
• Move the indoor and outdoor units to a new location.
• Remove the mounting plate for the indoor unit and move it to a new location.
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3. Disassembly and Reassembly
Stop operation of the air conditioner and remove the power cord before repairing the unit.
3-1 Indoor Unit
No
1
Parts
Front Grille
Procedure
1) Stop the air conditioner operation and block the main power.
2) Detach tape of Grille Air-Inlet.
Remark
3) After Both End Part of the Grille Lower
Position are pressing, it shall be detach by pushing up.
4) Loosen 1 of the right screw and detach the Terminal Cover.
5) Detach the thermistor from the Front
Grille.
6) Loosen 3 fixing screws of Front Panel.
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No Parts Procedure
7) Pull the lower left and right of discharge softly for the outside cover to be pulled out.
Disassembly and Reassembly
Remark
8) In order to disassemble the Panel Front press, in order, the left, center and right of the upper side of the Panel Grille with the plam of the hand to remove the hook.
And then disassemble the Panel Grille.
2 Tray Drain 1) Pull Tray Drain out from the Back Body.
3 Electrical Parts
(Main PCB)
1) Take all the connector of PCB upper side out. (Inclusion Power Cord)
2) Detach the outdoor unit connection wire from the Terminal Block.
3) If pulling the main PCB up, it will be taken out.
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Disassembly and Reassembly
No
4
Parts
Heat Exchanger
Procedure
1) Loosen 2 fixing earth screws of right side.
2) Detach the Connection Pipe.
3) Detach the Holder Pipe at the rear side.
4) Loosen the 2 fixing screws of right and left side.
5) Lifting the Heat Exchanger up a little to push the up side for separation from the indoor unit.
Remark
12
5 Fan Motor
&
Cross Fan
1) Loosen the 4 fixing screws and detach the
Motor Holder.
2) Loosen the fixing screw of Fan Motor.
(with a M3 wrench)
3) Detach the Fan Motor from the Fan.
4) Detach the Fan from the left Holder
Bearing.
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3-2 Outdoor Unit
No
1
Parts
Common Work
Procedure
1) Loosen 2 fixing screws and detach the
Cover Terminal.
2) Loosen 2 fixing screws and detach the
Cover Control.
3) Detach the connection wire from the
Terminal Block.
4) Loosen 6 fixing screws and detach the
Cabinet-Front.
5) Loosen 1 fixing screw of Ass'y E-part.
Remark
6) Loosen 12 fixing screws and detach the
Cabinet-Side.
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Disassembly and Reassembly
No
2
Parts
Fan & Motor
Procedure
1) Remove the Nut Flange.
(Turn to the clockwise)
2) Detach the Fan.
3) Loosen 4 fixing screws to detach the
Motor.
4) Loosen 2 fixing screws and detach the
Motor Bracket from the Base.
3 Heat Exchanger 1) Loosen 2 fixing screws of left and right side.
2) Disassemble the inlet and outlet pipe by welding.
3) Detach the Heat Exchanger.
4 Compressor 1) Open the Terminal Cover of Compressor and unscrew the Connection Terminal.
2) Disassemble the inlet and outlet pipe of
Compressor by Welding.
3) Loosen 3 bolts of the lower part.
4) Detach the Compressor.
Remark
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4. Refrigerating Cycle Diagram
Indoor Unit Outdoor Unit
T
1
Liquid side
2-Way valve
Capillary tube
Heat exchanger
(Evaporator)
Heat exchanger
(Evaporator)
T
2
Gas side
3-Way valve
Compressor
4-Way valve
Cooling
Heating
Gas Leak Check Polnt
Piping : Maximum Allowable Length 15m, Distance from Indoor Unit to Outdoor Unit in Height 7m.
If the pipe length exceeds 7.5m, the standard, please add 15g of refrigerant whenever the length increases by 1m.
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5. Set Up the Model Option
5-1 Setting Option Setup Method
Option No. :
Step 1 : Enter the Option Setup mode.
1 st Take out the batteries of remote control.
2 nd
3 rd
Press the temperature insert the battery again.
button simultaneously and
Make sure the remocon display shown as .
Step 2 : Enter the Option Setup mode and select your option according to the following procedure.
4
5
6
1
2
3
✳ Setting is not required if you must a value which has a default.
1
The default value is .
Otherwise, push the button to .
Every time you push the button, the display panel reads or repeatedly.
2
Push the button to set the display panel to .
Every time you push the button, the display panel reads
. . .
repeatedly.
3
Push the button to set the display panel to .
Every time you push the button, the display panel reads
. . .
repeatedly.
4
Push the button to set the display panel to .
Every time you push the button, the display panel reads
. . .
repeatedly.
5
Push the button to set the display panel to .
Every time you push the button, the display panel reads
. . .
repeatedly.
6
Push the button to set the display panel to .
Every time you push the button, the display panel reads
. . .
repeatedly.
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10
11
12
7
8
9
✳ Setting is not required if you must a value which has a default.
Set Up the Model Option
7
Press button, then the default value is .
8
Push the button to set the display panel to .
Every time you push the button, the display panel reads
. . .
repeatedly.
9
Push the button to set the display panel to .
Every time you push the button, the display panel reads
. . .
repeatedly.
10
Push the button to set the display panel to .
Every time you push the button, the display panel reads
. . .
repeatedly.
11
Push the button to set the display panel to .
Every time you push the button, the display panel reads
. . .
repeatedly.
12
Push the button to set the display panel to .
Every time you push the button, the display panel reads
. . .
repeatedly.
Step 3 : Upon completion of the selection, check you made right selections.
Press the Mode Selection key, to set the display part to and check the display part.
The display part shows .
Press the Mode Selection key,
The display part shows .
to set the display part to and check the display part.
Step 4 : Press the ON/OFF button ( )
When pressing the operation ON/OFF key with the direction of remote control for unit, the sound ''Ding'' or ''Diriring'' is heard and the OPERATION ICON( ) lamp of the display is flickering at the same time, then the input of option is completed. (If the diriring sound isn't heard, try again pressing the ON/OFF button.)
Step 5 : Unit operation test-run
First, Remove the battery from the remote control.
Second, Re-insert the battery into the remote control.
Third, Press ON/OFF key with the direction of remote control for set.
• Error Mode
1 st If all lamps of indoor unit are flickering, Plug out, plug in power plug again and press ON/OFF key to retry.
2 nd If the unit is not working properly or all lamps are continuously flickering after setting the option code, see if the correct option code is set up for its model.
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6. Troubleshooting
Check the basic items first to judge if the problem was caused by breakdown or misuse. If none of the basic items are related to the problem, please scrutinize the machine according to the 'Breakdown Diagnosis by Symptoms' method.
6-1 Basic Breakdown Diagnosis Items
1.
The input voltage should be rating voltage ±10% range.
The airconditioner may not operate properly if the voltage is out of this range.
2.
Is the link cable linking the indoor unit and the outdoor unit linked properly?
The indoor unit and the outdoor unit shall be linked by 5 cables(Heat pump model) or 3 cables(cool model).
Check the terminals if the indoor unit and outdoor unit are properly linked by the same number of cables.
Otherwise the airconditioner may not operate properly.
3.
When a problem occurs due to the contents illustrated in the table below it is a symptom not related to the malfunction of the airconditioner.
No
1
Operation of air conditioner
The OPERATION indication LED(GREEN) blinks when a power plug of the indoor unit is plugged in for the first time.
Explanation
It indicates power is on. The LED stops blinking if the operation ON/OFF button on the remote control unit is pushed.
2 In a COOL operation mode, the compressor does not operate at a room temperature higher than the setting temperature that the INDOOR FAN should operate.
[In case of heat pump model]
In a HEAT operation mode, the compressor does not operate at a room temperature lower than the setting temperature that indoor fan should operate.
In happens after a delay of 3 minutes when the compressor is reoperated. The same phenomenon occurs when a power is on.
As a phenomenon that the compressor is reoperated after a delay of 3 minutes, the indoor fan is adjusted automatically with reference to a temperature of the air blew.
3 Fan speed setting is not allowed in DRY( ) mode.
4 Compressor stops operation intermittently in DRY( ) mode.
5 Timer LED(GREEN) of the indoor unit lights up and the air conditioner does not operate.
The speed of the indoor fan is set to LL in DRY mode.
Fan speed is selected automatically in AUTO mode.
Compressor operation is controlled automatically in DRY mode depending on the room temperature and humidity.
Timer is being activated and the unit is in ready mode.
The unit operates normally if the timer operation is cancelled.
6 The compressor stops intermittently in a COOL mode or
DRY mode, and fan speed of the indoor unit decreases.
7 [In case of heat pump model]
Compressor of the outdoor unit is operating although it is turned off in a HEAT mode.
8 [In case of heat pump model]
The compressor and indoor fan stop intermittently in
HEAT mode.
9 [In case of heat pump model]
Indoor fan and outdoor fan stop operation intermittently in a HEAT mode.
The compressor stops intermittently or the fan speed of the indoor unit decreases to prevent inside/outside air frozen depending on the inside/outside air temperature.
When the unit is turned off while de-ice is activated, the compressor continues operation for up to 9 minutes
(maximum) until the deice is completed.
The compressor and indoor fan stop intermittently if room temperature exceeds a setting temperature in order to protect the compressor from overheated air in a HEAT mode.
The compressor operates in a reverse cycle to remove exterior ice in a HEAT mode, and indoor fan and outdoor fan do not operate intermittently for within 20% of the total heater operation
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6-2 Trouble check in the initial status
6-2-1 Diagnosis and marking of the part in trouble.
Please check the air conditioner operation status and write the check result in the chart in the room.
Description
OPERATION
LAMP
TURBO
Indoor unit room temperature sensor error
(open or short)
Indoor unit heat exchanger temperature sensor error
(open or short)
Indoor fan motor malfunction
EEPROM error
Option error
(option wasn't set up or option data error)
TIMER
: Lamp off : Lamp flickering
6-2-2 Operation with abnormal motion
No Abnormal condition
1 No response from the remote control operation signal.
Inspection
• Plug out and plug in 5 seconds later.
Able to operate the remote control.
Unable to operate the remote control.
Initial Diagnosis
OK
Press the (ON/OFF) button in the indoor unit.
• If it operates, the remote control and indoor unit receiver are in trouble.
• If not, the indoor unit is in trouble.
2 Unable to operate the outdoor unit
• Press the TURBO button with the remote control.
• In 3 minutes, check the voltage between the indoor unit terminal block N(1) and 1.
AC198V ~ AC242V
No power source displayed.
Problem with the outdoor unit or PCB
Problem with the relay (RY71) or PCB
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6-3 Breakdown diagnosis by symptoms
6-3-1 Room temperature sensor failure
Description
Indoor unit room temperature sensor error(open or short)
OPERATION
LAMP
TURBO TIMER
: Lamp off : Lamp flickering
Detach the assembly sensor from the
ASS'Y PCB CN43 connector and measure the sensor resistance with an ohmmeter (tester).
Is the sensor resistance value
10K
Ω ±3% at the room temperature of 25˚C?
Yes
Connect the sensor to CN43, supply power, and measure the voltage of
#1 and #2 of the CN43 connector.
No
ASS'Y Sensor Replace
SENSOR Resistance Value : 20˚C-12.09k
Ω
SENSOR Resistance Value : 30˚C-8.31k
Ω
SENSOR Resistance Value : 35˚C-6.94k
Ω
SENSOR Resistance Value : 40˚C-5.83k
Ω
Yes
Poor ASS'Y PCB Replace Below 0.5V?
No
Over 4.9V?
No
MICOM Error or Connector(CN43) check
Yes
Poor ASS'Y PCB Replace
20 Samsung Electronics
DB98-21337A(1) 05/1/4 2:21 AM Page 21
Troubleshooting
6-3-2 Room Pipe sensor failure
Description OPERATION
LAMP
TURBO TIMER
Indoor unit heat exchanger temperature sensor error
(open or short)
: Lamp off : Lamp flickering
1. Check the assembly condition of the sensor connector(CN43) on the indoor unit Main PCB and if not assembled, reassemble the connector accurately.
2. Detach the room pipe sensor connector(CN43) and check the resistance between connector 3 and 4.
Temperature(˚C)
15
20
25
Resistance Value(Kohm)
14.68
12.09
10
If the above data is not met, replace the room pipe sensor.
Temperature(˚C)
30
35
40
Resistance Value(Kohm)
8.31
6.94
5.83
Others
The data tolerance is ±3%.
3. Assemble the room pipe sensor to PCB, plug in, and check the voltage of connector 3 and 4. If the resistance is below 0.5V or over 4.9V, replace the indoor Main PCB. (short or disconnected in the PCB board)
Samsung Electronics 21
DB98-21337A(1) 05/1/4 2:21 AM Page 22
Troubleshooting
6-3-3 When the Indoor unit fan motor doesn't operate
Description
OPERATION
LAMP
TURBO TIMER
Indoor fan motor malfunction
: Lamp off : Lamp flickering
1. Checklist :
1) Is the indoor unit fan motor properly connected with the connector (CN72)?
2) Is the AC voltage correct?
3) Is HALL IC in indoor fan motor properly connected with the connector (CN44)?
4) Is the running capacitor (CR71) properly connected with PCB board?
2. Troubleshooting procedure
After unplugging out the power cord should be reconnected within 5 seconds.
Yes
No
Does the OPERATION lamp blink?
Yes
Does the Solid State Relay(SS71) work properly?
Test rod location
Normal
Voltage
+ -
SS71SS71-
Yes
12V
Is the supply voltage of the fan motor sufficient?
Test rod location
Normal
Voltage
PCB CN72 Condition pin #3 and #5 Fan operate
About AC
180V
Yes
No
No
Micom is out of order.
PCB is out of order.
Check as in the procedure
"NO power parts"
Motor Fan-Capacitor is out of order
Micom should be replaced
PCB should be replaced.
Replace Motor
Fan-Capacitor
Fan motor is out of order.
Fan motor should be replaced.
22 Samsung Electronics
DB98-21337A(1) 05/1/4 2:21 AM Page 23
Troubleshooting
6-3-4 When the power doesn't come in.
1. Checklist :
1) Is input voltage normal?
2) Is AC power linked correctly?
3) Is input voltage of DC regulator IC KA7805 (IC02) normal? (11VDC-12.5VDC)
4) Is output voltage of DC regulator IC KA7805 (IC02) normal? (4.5VDC-5.5VDC)
2. Troubleshooting procedure
Unplug the power cord and plug it after 5 seconds
Press the Power Button on the remote control unit to operate the air conditioner does not operate
◆ Check the indoor unit control board operate
◆ Check the display board
Check whether two wires of power cord are connected correctly to the terminal block and control board.
Yes
Check whether the fuse on the control board is normal.
F701: 3.15[A]/250[V]
Yes
Check the output of
SMPS on the control board.
Input power: AC230±15%[V]
IC02 Input: DC12[V]
IC02 output: DC5[V]
Yes
◆ Check the setting temperature
No
No
No
Reconnect wires correctly
Replace fuse
Replace the control board
Samsung Electronics 23
DB98-21337A(1) 05/1/4 2:21 AM Page 24
Troubleshooting
6-3-5 When the Outdoor Unit Does Not Operate. (Initial Diagnosis)
1. Checklist :
1) Is input voltage normal?
2) Is the set temperature of the remote control higher than room temperature in COOL mode?
3) Is the set temperature of the remote control lower than room temperature in HEAT mode?
4) Is the POWER IN connector (CN71) linked correctly?
5) Is the outdoor unit properly connected with the TERMINAL BLOCK connector(N(1), 1, 2, 3)?
2. Troubleshooting procedure
After unplugging out the power cord should be reconnected within 5 seconds.
24
Does the OPERATION lamp blink
No
Check as in the procedure
"No Power parts"
Yes
Does the timer lamp blink during operation?
No
#
Is the power relay RY71 operated by adjusting the room temperature?
+
Test rod location
Condition
IC4 Pin No.38
GND RY71 ON
No
Normal
Voltage
DC4.8V
Is rating voltage ±10% range applied relay between
Terminal block No. N(1) and No. 1
Yes
Yes
!
No
Room temperature sensor is
@
Micom is out of order out of order.
Power relay is out of order
PCB should be checked.
PCB should be checked.
Power relay should be replaced.
Outdoor unit is out of order.
!
Yes
No
@
Is the room sensor normal register?
10°C
17.96k
Ω
20°C
12.09k
Ω
30°C
8.3k
Ω
#
Samsung Electronics
DB98-21337A(1) 05/1/4 2:21 AM Page 25
Troubleshooting
6-3-6 In the HEAT mode, When there is no warm air current. Check this fist;
1) Is the set temperature of Remote Control lower than room temperature in Heat mode?
2) Is the Indoor PCB properly connected with the CN71 connector?
After training on, the heating operation should start in 5 minutes.
No
Is the number #38 of Micom (IC04)
DC5.0V?
Yes
Is the number checking
#11 of IC05 (ULN2003A) LOW?
Yes
Is the voltage between
CN71 #1 and CN71 #5 rating voltage
±10% range
Yes
Abnormal 4-Way valve of Outdoor Unit.
or connecting Cable
Yes
No
No
No
Normal
Abnormal Micom
Abnormal IC05
Abnormal RY73
PCB should be replaced.
4-Way valve should be replaced or connecting Cable Check.
Samsung Electronics 25
DB98-21337A(1) 05/1/4 2:21 AM Page 26
Troubleshooting
6-3-7 When the UP/DOWN Louver Motor Does Not Operate. (Initial Diagnosis)
1. Checklist :
1) Is input voltage normal?
2) Is the UP/DOWN louver motor properly connected with the connector (CN61)?
2. Troubleshooting procedure
Remove power cord and plug in again in approx.
5 seconds.
No
Is STD lamp blinking?
Yes
Does operation start when swing button of the remote control unit pushed?
No
Voltage at pin #57~#60 of micom (IC04) change?
(Squarewave)
Yes
Voltage at pin #16 of
IC06 (ULN2003A) and #10~#12 of IC08
(ULN2003A) change?
(Squarewave)
Yes
UP/DOWN louver motor is faulty.
Yes
No
No
Check as in the procedure
"No Power parts".
Normal
Micom (IC04) is faulty.
Driver IC06/08 (ULN2003A) is faulty.
26 Samsung Electronics
DB98-21337A(1) 05/1/4 2:21 AM Page 27
6-3-8 When the remote control is not receiving.
1. Check if the connector was normally assembled.
2. Put the set in operation and check the voltage of No. 3(+) and No. 2(-) of the main PCB CN91 while operating the remote control. When the voltage descends below 3V, the assembly module PCB is normal and the main PCB is poor.
Then replace the main PCB.
3. Replace the assembly display PCB because the module PCB is poor if the voltage between No. 2~3 of CN91 maintains 5V after the remote control starts operation.
Troubleshooting
Samsung Electronics 27
DB98-21337A(1) 05/1/4 2:21 AM Page 28
6-4 PCB Inspection Method
6-4-1 Pre-inspection Notices
1. Check if you pulled out the AC power plug when you eliminate the PCB or front panel.
2. Don't hold the PCB side not impose excessive force on it to eliminate the PCB.
3. Don't pull the lead wire but hold the whole housing to connect or disconnect a connector to the PCB.
6-4-2 Inspection Procedure
1. Check connector connection and peeling of PCB or bronze coating pattern when you think the PCB is broken.
2. The PCB is composed of the 3 parts.
● Main PCB Part : MICOM and surrounding circuit, relay, room fan motor driving circuit and control circuit, sensor driving circuit, power circuit of DC12V and DC5V, and buzzer driving circuit.
● Display part : LED lamp
● Switch part : Switch
6-4-3 Detailed Inspection Procedure
No
1
2
3
4
Procedure Inspection Method
Plug out and pull the PCB out of the electronic box.
Check the PCB fuse.
1) Is the fuse disconnected? (F701)
Cause
• Overcurrent
• Indoor Fan Motor Short
• AC Part Pattern Short of the MAIN PCB
Supply power.
If the operating lamp twinkles at this time, the above 1)~3) have no relation.
Checking the power voltage.
1) Is the DB71input voltage AC200V~AC240V?
• Power Cord is fault, Fuse open. Wrong
Power Cable Wiring, AC Part is faulty.
• Switching Trans or Power Circuit is faulty 2) Is the voltage between both terminals of the
C102 on the 2 nd side of the transformer AC12V
±0.5V?
3) Is the voltage between both terminals of OUT and GND of IC02(KA78L05) DC5V ±0.5V?
• Power Circuit is faulty, Load Short
Press the ON/OFF button and operate TURBO mode.
But, exclude the
RESERVE operation.
Checking the power voltage.
1) Check the voltage of the relay(RY71) coil(IC05 PIN
#11 and GND : 0V, PIN#6 and GND : 5V) during operation(3 minutes after TURBO operation).
• Relay(RY71) Coil Disconnection, IC05 is faulty
2) Check the voltage of both terminals of terminal block 1 and N(1) after 3 minute operation.: AC220V
• Relay(RY71) Contact is faulty
• Fan Motor of the indoor is faulty Press the ON/OFF button.
1. FAN Speed [High]
2. Continuous Operation
1) Is the voltage over AC180V being imposed on terminal #3 and #5 of the fan motor connector(CN72)?
2) The fan motor of the indoor unit doesn't run.
• Fan Motor Connector(CN72) is faulty
3) The power voltage between terminal #3 and #5 of the connector(CN72) is 0V.
• ASS'Y Main PCB is faulty
• Connection is faulty
28 Samsung Electronics
DB98-21337A(1) 05/1/4 2:21 AM Page 29
Troubleshooting
6-4-4 Temperature Sensor Feature Conversion Table(Room Temperature Sensor); 103AT
Temperature
[˚C]
Sensor Resistance
[Kohm]
Temperature
[˚C]
Sensor Resistance
[Kohm]
Temperature
[˚C]
Sensor Resistance
[Kohm]
Temperature
[˚C]
Sensor Resistance
[Kohm]
65
64
63
62
61
60
70
69
68
67
66
59
58
57
56
55
54
53
52
51
50
2.229
2.296
2.365
2.437
2.512
2.589
2.669
2.752
2.838
2.928
3.021
3.116
3.216
3.319
3.426
3.537
3.652
3.772
3.897
4.026
4.161
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
4.300
4.444
4.594
4.749
4.912
5.080
5.256
5.439
5.630
5.828
6.033
6.246
6.468
6.699
6.941
7.192
7.455
7.729
8.015
8.313
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
8.622
8.944
9.281
9.632
10
10.380
10.780
11.200
11.630
12.090
12.560
13.060
13.570
14.120
14.680
15.280
15.900
16.550
17.240
17.960
9
8
7
6
5
4
3
2
1
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
28.470
29.720
31.040
32.430
33.890
35.430
37.050
38.760
40.560
18.700
19.480
20.290
21.150
22.050
22.990
23.900
25.030
26.130
27.280
Samsung Electronics
Temperature Sensor Characteristic Curve
Temperature
(˚C)
70
20
10
0
-10
-9
60
50
40
30
At the temperature of 25˚C(10K
Ω)
5 10 15 20 25 30 35 40
Resistance Value (Kohm)
29
DB98-21337A(1) 05/1/4 2:21 AM Page 30
6-5 Main Part Inspection Method
Part
Room Temperature Sensor
Room Fan Motor
Breakdown Inspection Method
Measure resistance with a tester
Normal
Abnormal
At the normal temperature 37k
Ω~ 8.3kΩ(-7˚C~+30˚C)
*Refer to Table 6-4-4.
∞, 0Ω . . . Open or Short
Measure the resistance between terminals of the connector (CN73) with a tester.
Normal At the normal temperature (10˚C ~ 30˚C)
Compare terminal
Yellow, Blue
Yellow, Red
Resistance
404.4
Ω ± 10%
340
Ω ± 10%
Remark
Main
Sub
Outdoor Fan Motor
Abnormal
∞, 0Ω . . . Open or Short
Measure the resistance between motor wires with a tester.
Normal At the normal temperature (10˚C ~ 30˚C)
Compare terminal
Yellow, Red
Black, Yellow
Resistance
360
Ω ± 10%
328
Ω ± 10%
Remark
Main
Sub
Stepping Motor
(Discharge Air flow blade : B/L/R)
Stepping Motor
(Grille Motor)
Abnormal
∞, 0Ω . . . Open or Short
Measure the resistance between the red wire and each terminal wire with a tester.
Normal
Abnormal
About 300
Ω at the normal temperature (20˚C ~ 30˚C)
∞, 0Ω . . . Open or Short
Measure the resistance between connector 3 and each terminal wire with a tester.
Normal
Abnormal
About 120
Ω at the normal temperature (20˚C ~ 30˚C)
∞, 0Ω . . . Open or Short
30 Samsung Electronics
DB98-21337A(1) 05/1/4 2:21 AM Page 31
MEMO
Samsung Electronics 31
DB98-21337A(1) 05/1/4 2:21 AM Page 32
7. Exploded Views and Parts List
7-1 Indoor Unit
32
2
3
8
7
1
1-5
6
1-4
5
2-1
5-1
5-4
5-2
5-3
5-5
1-3
1-2
1-1
4-2
4-1
4
4-3
3-1
3-5
3-3
3-2
3-4
9
10-1 10-2
2-2
You can search for the updated part code number through the ITSELF.
URL : http://itself.sec.samsung.co.kr
Samsung Electronics
DB98-21337A(1) 05/1/4 2:21 AM Page 33
■
Parts List
No.
Code No.
7
8
9
10-1
10-2
5-1
5-2
5-3
5-4
5-5
6
3-4
3-5
4
4-1
4-2
4-3
5
1-4
1-5
2
2-1
1
1-1
1-2
1-3
2-2
3
3-1
3-2
3-3
DB63-00865A
DB61-01657A
DB93-02513D
DB61-01656A
DB93-02617A
DB62-01661A
DB94-00314A
DB63-00869A
DB94-00551A
DB66-00606A
DB66-00605A
DB95-20138A
DB61-01658A
DB70-00426A
DB96-03063D
DB63-00867A
DB93-01364B
DB61-00204A
DB94-00434A
DB61-01660A
DB61-01655A
DB31-00217A
DB94-00436A
DB94-00258A
DB92-00527B
DB64-01005A
DB63-00870B
DB92-00528A
DB64-01004A
DB63-00866A
DB93-02534A
Description
ASS'Y BACK BODY
BACK BODY
HOLDER MOTOR
MOTOR FAN IN
CROSS FAN
RUBBER BEARING
ASS'Y GRILLE
GRILLE AIR INLET
GUARD AIR FILTER
ASS'Y PANEL FRONT
PANEL FRONT
COVER DISPLAY
ASS'Y DISPLAY PCB
COVER DISPLAY PCB
HOLDER LED
ASS'Y CONTROL IN
HOLDER CONTROL
ASS'Y MAIN PCB
HOLDER CLAMP IN
ASS'Y TRAY DRAIN
TRAY DRAIN
DRAIN HOSE
BLADE-H
BLADE-V
MOTOR STEPPING
HOLDER PIPE
PLATE HANGER
ASS'Y EVAP UNIT
COVER TERMINAL
REMOCON
REMOCON HOLDER
HIPS
HIPS
ASS'Y
HIPS(V0)
ASS'Y
SGCC-M
ASS'Y
ABS
ASS'Y
HIPS
PP
ASS'Y
HIPS
SGCC-M
ASS'Y
HIPS(V0)
ASS'Y
HIPS
ASS'Y
HIPS
PP(V0)
ASS'Y
ASS'Y
RUBBER
ASS'Y
HIPS
PP
ASS'Y
HIPS
PC
ASS'Y
Specification
Exploded Views and Parts List
Q'TY
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Samsung Electronics 33
DB98-21337A(1) 05/1/4 2:21 AM Page 34
7-2 Outdoor Unit
23
22
11
13-6
13-1
13-3
13-4
13
13-5
13-2
12
15
24 2
5
3
4
21
20
19
18
17
6
1
7
8
14-1
9-1
9
10
16
14-2
14
34 Samsung Electronics
DB98-21337A(1) 05/1/4 2:21 AM Page 35
13-6
14
14-1
14-2
15
16
17
18
19
20
21
22
23
24
9
9-1
10
11
12
13
13-1
13-2
13-3
13-4
13-5
5
6
7
8
1
2
3
4
■
Parts List
No.
Code No.
Description
DB61-00170A
DB90-00108J
DB63-00099A
DB64-00086A
DB90-00152A
DB94-00021A
DB67-60020A
DB35-00028V
DB63-20002A
DB63-10165D
DB60-30018A
DB31-00034A
DB67-00036A
DB60-30020A
DB90-00107D
DB94-00045A
ASS'Y BASE OUT
ASS'Y PARTITION
DB73-00070A GROMMET ISOLATOR
G4A080JU1EP-TS ROTARY COMP
DB60-30028A
DB72-00727A
DB61-00168A
DB96-03064D
NUT WASHER
CLOTH COMP SOUND
BRACKET VALVE
ASS'Y CONDENSER
DB99-00574A
DB33-00002A
DB96-02989F
DB90-01287A
DB90-00109D
DB93-02565C
2501-001236
DB93-00481A
DB61-00172A
DB65-40049E
2301-001375
ASS'Y 4WAY VALVE
ASS'Y SOLENOID COIL
ASS'Y TUBE CAPILLARY
ASS'Y BRACKET MOTOR
ASS'Y CABI SIDE
ASS'Y CONTROL OUT
C OIL
ASS'Y LEAD WIRE
HOLDER CAPACITOR
TERMINAL BLOCK
C FILM
CASE CONTROL OUT
ASS'Y CABI FRONT
GUARD FAN WIRE
CABINET FRONT
ASS'Y COVER CONTROL
ASS'Y COVER VALVE
SPRING OLP
PROTECTOR O/P
GASKET
COVER TERMINAL
NUT FLANGE
MOTOR FAN OUT
FAN PROPELLER
NUT FLANGE
Samsung Electronics
Exploded Views and Parts List
Q'TY
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
1
35
DB98-21337A(1) 05/1/4 2:21 AM Page 36
7-3 Ass'y-Control In : DB93-02513D
No.
5
6
7
8
1
2
3
4
9
10
11
12
■
Parts List
Code No.
DB61-01656A
DB93-02617A
DB93-02508A
DB61-01661A
6001-000929
6001-001054
6001-000725
DB61-00171A
DB93-01549B
DB32-00020A
DB93-02498A
DB39-00147D
Description
CASE-CONTROL
ASS'Y MAIN PCB
ASS'Y TERMINAL BLOCK
HOLDER CLAMP IN
SCREW-MACHINE
SCREW-MACHINE
SCREW-MACHINE
CLAMP WIRE
POWER CORD
ASS'Y-THERMISTOR
ASS'Y-C/W SUB(MAIN)
CONNECTOR PCB U/D
Specification
HIPS
ASS'Y
ASS'Y
SGCC-M T1.0
PH M3xL22
TH M4xL10
TH M4xL16
ABS
-
ASS'Y
ASS'Y
ASS'Y
36
Q'TY
2
1
1
1
1
1
1
1
1
1
1
1
Samsung Electronics
DB98-21337A(1) 05/1/4 2:21 AM Page 37
8. Block Diagram
REMOTE CONTROL
POWER ON/OFF
MODE
(AUTO, COOL, DRY,
FAN, HEAT(*))
TEMPERATURE
SELECT(UP/DOWN)
TURBO OPERATION
SLEEP OPERATION
FAN SPEED SELECT
(H/M/L)
BLADE-H
MOVING SELECT
(SWING/STOP)
TIMER
-ON TIMER
-OFF TIMER
-SET/CANCEL
ENERGY SAVING
HEAT EXCHANGER SENSOR
ROOM TEMPERATURE SENSOR
INFRARED SIGNAL
RESET
CIRCUIT
CONTROLLER
IC-MCU
• BLADE CONTROL
• INDOOR FAN MOTOR CONTROL
• COMPRESSOR CONTROL
• TEMPERATURE CONTROL
• TIMER
• BUZZER CONTROL
• OUTDOOR FAN MOTOR CONTROL
• 4-WAY VALVE CONTROL(*)
OSCILLATION
CIRCUIT
ZERO
VOLTAGE
DETECT
• COMPRESSOR CONTROL
SIGNAL
• STEPPING MOTOR
CONTROL SIGNAL
• BUZZER CONTROL SIGNAL
• OUTDOOR FAN MOTOR
CONTROL SIGNAL
• 4-WAY VALVE CONTROL
SIGNAL(*)
TRIGGER
SIGNAL
SSR
RPM
DETECT
• COMPRESSOR DRIVE
• OUTDOOR FAN MOTOR
DRIVE
• STEPPING MOTOR DRIVE
• BUZZER DRIVE
• 4-WAY VALVE DRIVE(*)
BUZZER
DC5V
VOLTAGE REGULATOR
DC12V
SMPS POWER BLOCK
DISPLAY PART
OPERATION
TIMER
TURBO
INDOOR FAN MOTOR
COMPRESSOR
OUTDOOR FAN MOTOR
4-WAY VALVE(*)
STEPPING MOTOR
: BLADE UP/DOWN
Samsung Electronics
AC INPUT ✳ (*)marks : In case of heat pump model.
37
DB98-21337A(1) 05/1/4 2:21 AM Page 38
9. Wiring Diagram
9-1 Indoor Unit
38
Code No : DB98-15960A
This Document can not be used without Samsung's authorization.
Samsung Electronics
DB98-21337A(1) 05/1/4 2:21 AM Page 39
9-2 Outdoor Unit
C1 : MOTOR CAPACITOR
C2 : COMP CAPACITOR Code No : DB68-01765A
Samsung Electronics
This Document can not be used without Samsung's authorization.
39
DB98-21337A(1) 05/1/4 2:21 AM Page 40
MEMO
40 Samsung Electronics
DB98_21337A_co 05/1/4 1:45 AM Page 2
ELECTRONICS
This Service Manual is a property of Samsung Electronics Co., Ltd.
Any unauthorized use of Manual can be punished under applicable
International and/or domestic law.
© Samsung Electronics Co., Ltd. Jan. 2005.
Printed in Korea.
Code No. DB98-21337A(1)

Public link updated
The public link to your chat has been updated.
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Key features
- Cooling and heating functions
- Dehumidifying capability
- Multiple operation modes
- Remote control with timer functions
- Energy saving mode
- Automatic fan speed adjustment
- Swing function for airflow direction
- Turbo cooling and heating mode
- Sleep mode for temperature adjustments
- Compulsory operation mode