Samsung Air Conditioner Instruction Manual
Below you will find brief information for Air Conditioner. This manual is essential for understanding how to operate your air conditioner and is especially useful for troubleshooting common problems. The document details different operating modes (Automatic, Cooling, Heating, Dry, and Fan) and provides guidance on selecting the correct settings for each mode. Specific information can be found on setting the correct fan speed, adjusting the temperature, and utilizing additional features like a filter cleaning cycle. The manual includes detailed troubleshooting steps for various errors that may occur during operation. Finally, it provides a comprehensive guide to setting up optional switches and understanding LED displays to aid in diagnosing and resolving any malfunctions.
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10. PCB Diagram
10-1 Indoor Unit
!
@ 4 #
7
8
9
5
6
0 “
!
Floating S/W
Indoor Pipe In Temperature Sensor
@
Indoor Room Temperature Sensor
#
Indoor Pipe Out
Temperature Sensor
$
Heater Discharge
Temperature Sensor
%
Wired Remote Controller Power
^
External Control(S/W Part)
&
EEV
*
Display
(
External Control(Display Part)
)
HALL IC
1
MICOM Download
2
Indoor/Outdoor Communication
10-1
& *
‘ + = Q
3
Wired Remote Controller Communication
4
Option Load Connector
5
Heater
6
Indoor Address S/W
7
Indoor Option S/W
8
Indoor Fan(TAP)
9
Ventilator
0
Drain Pump
“
Hot Coil
‘
Indoor Fan(SSR)
Power
+
Transformer Out
=
Main Power In
Power
Q
Transformer In
Samsung Electronics
)
1
2
3
!
@ 4 # $ (% ^ & *
7
8
9
5
6
0 “ ‘ + = Q
!
Floating S/W : SMW250-02(BLK)
Indoor Pipe In Temperature Sensor : SMW250-04(WHT)
@
Indoor Room Temperature Sensor : SMW250-04(WHT)
#
Indoor Pipe Out : SMW250-02(WHT)
Temperature Sensor : SMW250-02(WHT)
$
Heater Discharge : SMW250-02(YEL)
Temperature Sensor : SMW250-02(YEL)
%
Wired Remote Controller Power : YW396-02(WHT)
^
External Control(S/W Part) : SMW250-02(RED)
&
EEV : SMW250-05(BLU) : SMW250-05(BLU)
*
Display : SMW200-11(WHT) : SMW200-11(WHT)
(
External Control(Display Part) : SMW250-04(RED)
)
HALL IC : SMW250-03(BLU)
1
MICOM Download : SMW200-10(WHT)
2
Indoor/Outdoor Communication : YW396-02(RED)
3
Wired Remote Controller Communication : YW396-02(BLU)
4
Option Load Connector : SMW250-05(YEL)
5
Heater : YW39607AV(WHT)
6
Indoor Address S/W
7
Indoor Option S/W
8
Indoor Fan(TAP) : YW396-09AV(WHT)
9
Ventilator : YW396-03AV(BLK)
0
Drain Pump : YW396-03AV(YEL)
“
Hot Coil : YW396-03AV(RED)
‘
Indoor Fan(SSR) : YW396-03AV(RED)
Power : YW396-03AV(WHT)
+
Transformer Out : YW396-03AV(WHT)
=
Main Power In : YW396-03AV(BLU)
Power : YW396-03AV(BLU)
Q
Transformer In : SMW250-03(RED)
Samsung Electronics 10-2
)
1
2
3
10-2 Outdoor Unit
!
@ # $ % ^ & *
( )
!
EEV(2,000 Step)
@
EEV(480 Step)
#
Transmitter Power(12V)
$
Discharge Temperature Sensor
%
Outdoor Temperature Sensor
Outdoor Pipe Temperature Sensor
^
Low Pressure S/W
&
Communication
*
Transformer Out
1 2 3 4 5 6 7
(
GROUND
)
Main Power In
1
Outdoor Fan 1
2
Outdoor Fan 2
3
Compressor Output
4
4-Way Valve Output
5
Bypass
6
Transformer In
7
3 Phase Check
10-3 Samsung Electronics
!
@ # $ % ^ &
PCB Diagram
*
( ) 1 2 3 4 5 6
!
EEV(2,000 Step) : B6B-XH-A(BLU)
@
EEV(480 Step) : B5B-XH-A(BLU)
#
Transmitter Power(12V) : YW396-02V(WHT)
$
Discharge Temperature Sensor : SMW250-02(WHT)
%
Outdoor Temperature Sensor : SMW250-04(WHT)
Outdoor Pipe Temperature Sensor : SMW250-04(WHT)
^
Low Pressure S/W : YW396-02V(YEL)
&
Communication : YW396-02V(RED)
*
Transformer Out : SMW250-03(RED)
(
GROUND : YDW236-01(WHT)
)
Main Power In : YW396-07AV(WHT)
1
Outdoor Fan 1 : YW396-05AV(WHT)
2
Outdoor Fan 2 : YW396-05AV(BLU)
3
Compressor Output : YW396-03AV(BLK)
4
4-Way Valve Output : YW396-03AV(YEL)
5
Bypass : YW396-03AV(WHT)
6
Transformer In : GT-2(WHT)
7
3 Phase Check : YW396-05AV(YEL)
7
Samsung Electronics 10-4
11. Operating Instruction and Installation
11-1 Main Function
Mode
Selecting the
Automatic
Operating Mode
Explanation
1. If necessary, press (ON/OFF) button.
2. To select the AUTO mode, press the button until is displayed at the top of the wired remote controller.
Remark
3. To adjust the temperature, press the buttons one or more times until the required temperature is displayed. Possible temperatures are between 18˚C and 30˚C inclusive.
Cooling Your Room
1. If necessary, press (ON/OFF) button.
2. To select the COOL mode, press the button until is displayed at the top of the wired remote controller.
3. To adjust the temperature, press the buttons one or more times until the required temperature is displayed. Possible temperatures are between 18˚C and 30˚C inclusive.
11-1 Samsung Electronics
Main Function (cont.)
Mode
Cooling Your Room
Explanation
4. Select the fan speed by pressing the button one or more times until the intended value is displayed :
Automatic(rotated :
➔ ➔
)
Low
Medium
High
Heating Your Room
(Except cooling only models)
1. If necessary, press (ON/OFF) button.
Remark
2. To select the HEAT mode, press the button until is displayed at the top of the wired remote controller.
3. To adjust the temperature, press the buttons one or more times until the required temperature is displayed. Possible temperatures are between 16˚C and 30˚C inclusive.
4. Select the fan speed by pressing the button one or more times until the intended value is displayed :
Automatic(rotated :
➔ ➔
Low
Medium
High
)
Samsung Electronics 11-2
Operating Instruction and Installation
Mode
Removing Excess
Humidity
Explanation
1. If necessary, press (ON/OFF) button.
2. To select the DRY mode, press the button until is displayed at the top of the wired remote controller.
3. To adjust the temperature, press the buttons one or more times until the required temperature is displayed. Possible temperatures are between 18˚C and 30˚C inclusive.
Airing Your Room
1. If necessary, press (ON/OFF) button.
Remark
2. To select the FAN mode, press the button until is displayed at the top of the wired remote controller.
3. Select the fan speed by pressing the button one or more times until the intended value is displayed:
Low
Medium
High
11-3 Samsung Electronics
11-2 Additional Function
■ Compensation for lost temperature in heating operation
• Reduces the difference between an actual room temperature and a sensed temperature by the air conditioner when heating.
Switch No.
K5
Switch ON
2˚C compensation
Switch OFF
5˚C compensation
K5 K6 K7 K8
SW06
■ Adjusting filter cleaning cycle
• You can adjust the cycle for filter sign indicator.
Switch No.
K6
Switch ON
1,000 hours
Switch OFF
2,000 hours
K5 K6 K7 K8
SW06
■ Hot water heater
•
You must adjust the K7 when you install the hot water heater.
Switch No.
K7
Switch ON Switch OFF
No use of hot water heater Use of hot water heater
K5 K6 K7 K8
SW06
■ External Control
• You must adjust the K11 when you use external control.
Switch No.
K11
Switch ON
No use of external control
Switch OFF
Use of external control
K 1 K 2 K 3 K 4
SW07
Samsung Electronics 11-4
Operating Instruction and Installation
■ External Control (cont.)
• You can use external control when the K11 switch is turned off.
•
<Operation ON/OFF Function>
Connector No.
CN83(RED)
SHORT
Operation ON
OPEN
Operation OFF
CN83(RED)
ON/OFF Switch
•
<Operation State Display>
Connector No.
Function
PIN #1 and #2 of CN81(RED) +12V Out if any error occurs
PIN #3 and #4 of CN81(RED) +12V Out when the compressor is operating
AC
220V
Error Display
Comp. Status Display
Sub. PCB
CN81(RED)
11-5 Samsung Electronics
11-3 Wired Remote Controller-Buttons and Display
Removing frost indicator
Operating mode
Centralized controller indicator
(In case of installing the Centralized controller)
Communication error indicator
On Timer setting
Off Timer setting
Test indicator
Temperature adjustment buttons
Timer button
Timer Set/Cancel button
Test button
Temperature setting
Fan speed
Air flow direction
Filter Sign indicator
On/Off button
On/Off indicator
Fan speed adjustment button
Swing button(Except Duct type)
Filter Reset button
Mode selection button
Note : • The button is for your installation specialist. You must not press it.
• After cleaning the air filter, press the button. Then the wired remote controller will display the
Filter Sign indicator when the time to clean the air filter.
• Duct type air conditioner does not have function of adjusting air flow direction.
Therefore, the function is not operated even if you press the button.
Samsung Electronics 11-6
12. Troubleshooting
12-1 Operation Specification
12-1-1 Tracking process marked on display part
• Left numeral is an address that outdoor unit transfers communication.
-
... -
(Calling indoor unit)
• Right numeral marks address that is answered.
• During the tracking, left calls indoor unit through
-
... -
and checks. At this time connected indoor unit set on " " and the indoor unit set address marked on right.
Right side mark is marked by when left side is .
(If SW02(MAIN) that set indoor unit address is controlled to " ", indoor unit number marked on outdoor unit is marked by " ".)
12-1-2 Option set part for Outdoor unit PCB
Left Right
DISPLAY PART (DS1)
Data display part
KEY
Setting switch for indoor unit installation numbers
■ Setting switch for indoor unit installation numbers
Counts of Indoor
Unit Installation
Numbers of the switch
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1 2 3 4 5 6 7 8 9 A B C D E F
● Example : When the installed indoor unit is one, control the arrow of switch forward to ‘0’ or ‘1’ as figure.
12-1 Samsung Electronics
Troubleshooting
12-1-3 Setting Up Option Switches
■ KEY
K1 K2 K3 K4
CHECK
MODE
RESET DISPLAY
MODE
■ Display
DIS 1 DIS 2
SEG1 SEG2 SEG3 SEG4
ITEM No.
CURRENT DATA DISPLAY
■ Summary of KEY functions
Function
Number of press times
K1
(Displayed on SEG 3, 4)
K2
(Displayed on SEG 3, 4)
K3
(Displayed on SEG 3, 4)
K4
(Displayed on SEG 3, 4)
1
Adding refrigerant at heating mode
Adding refrigerant at cooling mode
Reset Displays data
2
Test operation at heating mode
Test operation at cooling mode
-
-
3
End
4
-
✳ Use the K1 only for heat pump models.
Pump Down for recovery of refrigerant
End
-
-
-
-
Samsung Electronics 12-2
12-2 Troubleshooting
12-2-1 Wired remote controller display error occurring
■ If an error occurs, is displayed on the wired remote controller.
■
If you would like to see an error code, press the Test button.
Display Description
Compressor down due to protection control of the discharge temperature sensor
Control due to the condenser temperature sensor when cooling mode
Remarks
Error about protection control of the outdoor unit
Error of the low pressure switch (Protection control)
Reverse phase error (Protection control)
In removing frost
Error of the outdoor temperature sensor (Open/Short)
Error of condenser temperature sensor (Open/Short)
Error about the outdoor unit sensor (Open/Short)
Detection during the operation of the indoor unit
(sensing and sending errors into the communication data)
Error of discharge temperature sensor (Open/Short)
- System down caused by communication error after completion of tracking
- Mismatching of the indoor unit numbers set with those communication after completion of 5 times tracking
Communication and the indoor unit errors
Error of temperature sensor in the indoor unit (Open/Short)
Self-diagnosis of the indoor and outdoor unit
Error of the heat exchanger sensor in the indoor unit (Open/Short)
Error of electronic expansion valve open in the outdoor unit
(when it is detected more than once)
Error of electronic expansion valve close in the outdoor unit
(when it is detected more than once)
Error of communication between the indoor unit and the wired remote controller
Master wired remote controller
↔ Slave wired remote controller
Wired remote controller errors
COM1/COM2 Cross-installed error
Error of setting option for wired remote controller COM2
12-3 Samsung Electronics
Troubleshooting
12-2-2 LED Display on the receiver & display unit
● If an error occurs during the operation, an LED flickers and the operation is stopped except the LED.
● If you re-operate the air conditioner, it operates normally at first, then detect an error again.
● If you turn off the air conditioner when the LED is flickering, the LED is also turned off.
■ LED Display
LED lamp display
Concealed Type
Error type
Blue Red
Standard Type
Power reset
Error of temperature sensor in the indoor unit (Open/Short)
Error of heat exchanger sensor in the indoor unit
Error of the outdoor temperature sensor
Error of the condenser temperature sensor
Error of the discharge temperature sensor
1. No communication for 2 minutes between indoor units
(Communication error for more than 2 minutes)
2. Indoor unit receiving the communication error from outdoor unit
3. Outdoor unit tracking 3 minutes error
4. When sending the communication error from outdoor unit, the mismatching of the communication numbers and installed numbers after completion of tracking.
(Communication error for more than 2 minutes)
Communication error between indoor units
1. Error of electronic expansion valve close
2. Error of electronic expansion valve open
3. 2'nd detection of high temperature cond
4. 2'nd detection of high temperature discharge
5. Error of reverse phase
6. Compressor down due to 6'th detection of freezing
Detection of the float switch
Error of setting option switches for optional accessories
EEPROM error
EEPROM option error
: On : Flickering : Off
Samsung Electronics
Remarks
1. Indoor unit error
(Display is unrelated with operation)
2. Outdoor unit error
(Display is unrelated with operation)
12-4
Troubleshooting
12-2-3 Outdoor Unit
If an error occurs during the operation, it is displayed on the outdoor unit PCB.
Display
Flicker
Flicker x x x x
Explanation
High temperature of Discharge (Protection control)
High temperature of outdoor heat exchanger (Protection control)
Reverse phase error (Protection control)
COMP DOWN to protect being frozen
In removing frost
Error of OUT TEMP sensor (OPEN/SHORT)
Error of temperature sensor in outdoor heat exchanger (OPEN/SHORT)
Error of Discharge TEMP sensor (OPEN/SHORT)
System Down caused by communication error after completion of tracking
Mismatching of the indoor unit numbers set with those communicated after completion of tracking
Error of float switch in indoor unit
Error of setting option switches for optional accessories
OPEN/SHORT error of room sensor in indoor unit
OPEN/SHORT error of eva in sensor in indoor unit
EEPROM option error
Error of fan starting
Open error of electronic expansion valve in outdoor unit
(Detected once or more times)
Close error of electronic expansion valve in outdoor unit
(Detected once or more times)
Below -5°C when cooling (Outdoor temperature)
Over 30°C when heating (Outdoor temperature)
Remark
Error about protection control of outdoor unit
Errors about outdoor unit sensor (OPEN/SHORT)
Detection during the operation of indoor unit
(Sensing and sending errors into the communication data)
Communication and indoor unit errors
Self-diagnosis of indoor and outdoor unit (x:indoor unit address)
Displays of operating status
K1, K2, K3, K4,
K5 Flicker
The order of priority : E1
→ E2 → E3 → E5 → P0 → P1 → P4 → P5 → P9 → t1 → t2 → t3 → tu → to → G4 → G5 → E3 → qx → rx → vx →
K1, K2, K3, K4, K5
The order of priority : - In case that the same error displays from multi-indoor units, the one having the faster address has the priority.
12-5 Samsung Electronics
12-3 Sequence for trouble diagnosis
12-3-1 Outdoor temp. sensor(OPEN/SHORT)
Outdoor unit display
Indoor unit display
How to determine
Reason of error
(Outdoor temp. sensor OPEN/SHORT error)
(Operation) (Timer) (Airflow) (Filter)
Disconnection and short of outdoor temp. sensor
Disconnection or leak of applied sensor
Does the out temperature sensor connected to PCB?
(CN41)
Yes
Measure the resistance value between two terminals after separating the out temp. sensor connector from PCB
No
Reoperation after connect to connector PCB
At this time, Is largely deviate the resistance value from side table value?
No
Check the out temp. sensor is normal or not by use of out data display part
➞ Check the temp. data is normal or not after pressing K4 3 times.
At this time, is occurred the difference between the out temp. and data?
Yes
Reoperation after PCB replacement
Yes
Outdoor unit thermistor is defective(replace)
No
PCB and sensor are normal.
To perform the test operation by use of K2
40
30
20
10
Temp.
(˚C)
70
60
50
0
-10
Resistance
(k
Ω)
2.2
3.0
4.2
5.8
8.3
12.1
18.0
27.3
43.0
Samsung Electronics 12-6
Troubleshooting
12-3-2 Outdoor heat exchanger temp. sensor error(OPEN/SHORT)
Outdoor unit display
Indoor unit display
How to determine
Reason of error
(Outdoor heat exchanger temp. sensor error(OPEN/SHORT)
(Operation) (Timer) (Airflow) (Filter)
Disconnection and short of outdoor heat exchanger temp. sensor
Disconnection or leak of Applied sensor
Does the out heat exchanger temp. sensor connected to PCB?
(CN41)
Yes
Measure the resistance value between two terminals after separating the out heat exchanger temp.
sensor connector from PCB
No
Reoperation after connect to connector PCB
Yes
Temp.
(˚C)
70
60
50
40
30
20
10
0
-10
Resistance
(k
Ω)
2.2
3.0
4.2
5.8
8.3
12.1
18.0
27.3
43.0
At this time, Is largely deviate the resistance value from side table value?
No
Check the out temp. sensor is normal or not by use of out data display part
➞ Check the temp. data is normal or not after pressing K4 2 times.
At this time, is occurred the difference between the out temp. and data?
Yes
Reoperation after PCB replacement
No
Outdoor heat exchanger temp. is defective(replace)
PCB and sensor are normal.
To perform the test operation by one of K2
12-7 Samsung Electronics
Troubleshooting
12-3-3 Outdoor discharge temp. sensor error(OPEN/SHORT)
Outdoor unit display
Indoor unit display
How to determine
Reason of error
(Outdoor discharge temp. sensor OPEN/SHORT error)
(Operation) (Timer) (Airflow) (Filter)
Disconnection and short of outdoor discharger temp. sensor
Disconnection or leak of Applied sensor
Does the outdoor discharge temp. sensor connected to PCB?
(CN42)
Yes
Measure the resistance value between two terminals after separating the outdoor discharge temp.
sensor connector from PCB
No
Reoperation after connect to connector PCB
Temp.
(˚C)
130
120
100
80
60
25
20
10
0
Resistance
(k
Ω)
8.9
11.2
18.5
32
59
200
242
362
553
At this time, Is largely deviate the resistance value from side table value?
No
Check the out temp. sensor is normal or not by use of out data display part
➞ Check the temp. data is normal or not after pressing K4 1 times.
At this time, is occurred the difference between the out temp. and data?
Yes
Reoperation after PCB replacement
Yes
Outdoor heat exchanger temp. is defective(replace)
No
PCB and sensor are normal.
To perform the test operation by use of K2
Samsung Electronics 12-8
Troubleshooting
12-3-4 Communication error during the operation
Outdoor unit display
Indoor unit display
How to determine
Reason of error
(Communication error during the operation)
(Operation) (Timer) (Airflow) (Filter)
Disconnection and short of communication lines
Communication error between the indoor unit and outdoor unit.
Check the display after pressing the reset key on outdoor PCB
When tracking, is there any indoor answer from display part?
Yes
Measure the 2 lines of outdoor side by scope after removing the communication line connecting from outdoor unit to indoor unit.
No
Multi type
After 2 minutes, check if PCB address setting of indoor unit displayed the communication error among indoor units are overlapped or not.
(If the indoor unit address is overlapped, the communication error is occurred.)
- In this case, the communication error is occurred to over two indoor units set wrong.
If address is not fault exchange the indoor unit PCB after communication line check.
At this time, is the voltage between lines rectangular wave over DC±0.7V
like below figure?
Yes
After connecting again the communication line connecting from outdoor unit to indoor unit, remove the communication connector on indoor unit PCB, and find the indoor unit preventing communication through connecting the communication connectors each by each, and then replace the indoor unit PCB after line check.
No
Replace PCB after checking the outdoor unit communication line and connector
Good
Bad
+0.7V
-0.7V
12-9 Samsung Electronics
Check the setting value of indoor unit installation number setting switch of outdoor PCB and actual indoor unit installation numbers
Troubleshooting
12-3-5 Communication error between indoor and outdoor after initial power input.
Outdoor unit display
Indoor unit display
How to determine
Reason of error
(Tracking error)
(Operation) (Timer) (Airflow) (Filter)
Mismatching the communicating indoor unit and setting switch indoor numbers When outdoor tracking
Communication error between the indoor unit and outdoor unit, and installation number switch setting miss
If the indoor unit number installed is one, set the outdoor unit switch forward to "0", "1"
➞ "0" and "1" spell the connection of an indoor unit.
Is equal indoor unit actual installation number and installation number setting switch?
Yes
Press the reset key K3 of outdoor unit
PCB and check the display to check the number of indoor units answering to the tracking
No
After setting the indoor unit installation setting number switch correctly, re-perform the tracking by pressing the reset key K3 of outdoor unit PCB
When tracking, is there any indoor answer from display part?
Yes
To measure the 2 lines of outdoor unit side by use of scope after removing the communication line connecting from outdoor unit to indoor unit
At this time, is the voltage between lines rectangular wave over
DC±0.7V?
Yes
After connecting again the communication line connecting from outdoor unit to indoor unit, check this communication is reverse or not, and if there is no fault, find the indoor unit preventing communication through connecting indoor units each by each, and then exchange the indoor unit PCB after line check
Samsung Electronics
No
Multi type
After 2 minutes, check if PCB address setting of indoor unit displayed the communication error among indoor units is overlapped or not .
(If the indoor unit address is overlapped, the communication error is occurred.)
- In this case, the communication error is occurred to over two indoor units set wrong
If address is not fault exchange the indoor unit PCB after communication line check.
12-10
Troubleshooting
12-3-6 Indoor float switching error
Outdoor unit display
Indoor unit display
How to determine
Reason of error
(Indoor float switching error )
(Operation) (Timer) (Airflow) (Filter)
The status continues over 1 minute that indoor unit float switch is opened.
The rising of water level of drain pan due to the disorder of indoor unit drain pump, the badness of detection sensor
Is the resistance value
∞ when measuring the resistance value of two terminal after taking out the floating switch connector connected to indoor unit PCB? (Open status)
No
Re-assembly the floating switch connector and perform the reset of outdoor power(Required the reset of indoor unit power)
Yes
No
Is much the water of drain pan ?
Yes
Reset the indoor unit power and check the drain pump operation
No
Is the same error occurred?
Yes
Replace the indoor unit PCB
Normal operation
12-11
No
Check the floating switch is bad.
Reset the indoor unit power after replace
Does the drain pump operate?
Yes
Does the water level decrease?
Yes
Normal operation
No
Is the terminal voltage of drain pump PCB about
AC220V?
Yes
Replace the drain pump
No
Replace the indoor unit PCB
Replace the drain pump
Note : E3 error should be released when indoor unit power is reset.
Samsung Electronics

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Key features
- Multiple operating modes
- Fan speed adjustment
- Temperature control
- Filter cleaning indicator
- Hot water heater option
- External control option
- Self-diagnosis system
- LED error display
- Troubleshooting guidelines
- Option switch configuration