3. Alignment and Adjustments
3-1 Test Mode
Q How to Approach Test Mode
You can approach the Test Mode by pressing the on/off switch of
indoor unit for 5 seconds.
on/off switch
Q Test Mode Operation Option
After installing the air conditioner, check whether each subordinate is normally operated or not by operating the Test Mode.
• Temperature Display Part : Display the set option at one-second intervals. (Only for models having the temperature display part)
ex) 0b0000-1730F8 : 0b→00→00→17→30→F8→0b ...(Repeat)
• When an error occurs, display the Error Mode.
LED Display
LAMP
Waiting Operation
OPERATION
TIMER
TURBO
Cause
Indoor temperature
sensor error
(OPEN /SHORT)
Follow-up Measures
• Check assembling status of the sensor part’s
connector on the indoor unit main PCB
• Measure the resistance value on both sides –
connector no. 1 and no. 2 (E1), no. 3 and no. 4
(E2) – by separating the sensor part’s connector
Temp. Resistance Temp. Resistance
(°C) Value(KΩ) (°C) Value(KΩ)
Indoor heat exchanger
temperature sensor error
(OPEN /SHORT)
15
14.68
30
8.31
20
12.09
35
6.94
25
10.00
40
5.83
Others
The error of
DATA is
±2%.
* If not meet the above DATA, replace sensors.
Indoor fan motor speed
detecting error
(Occur when it continues
for 15 seconds at below
450rpm)
• Check assembling status of the Motor Hall IC
output connector (CN44) on the indoor unit
main PCB
EEPROM error
(Option memory)
* Display only for models
having the returning
function for the power failure
Blink all lamps
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When there is an option
related error
When options are not set
When there is an option
data error
• Reset options
• Replace the PCB
• Reset options
3-1
Alignment and Adjustments
Q Test Mode Operation Option(cont.)
• Operation Mode : Cool mode. Operate the cool mode by operating the compressor by force without the compressor ON/OFF
according to the set temperature/indoor temperature. (Do not follow the antifreeze control)
• Up-down louver : Up-down swing mode
• Indoor Fan : High
• Because the Test Mode operate the cool mode by force not related to the set temperature / indoor temperature, check
whether each subordinate is operated normally or not after completing installation and must turn off the power of the
air conditioner.
3-2
Samsung Electronics
3-2 Error Mode and Check Method
Error Mode
LAMP
7-segment Display
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)
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Display Flickering
3-3
Alignment and Adjustments
3-2-1 Room temperature sensor Error
Error Mode
LAMP
7-segment Display
Indoor unit room temperature sensor error(open or short)
Detach the assembly sensor from the
ASS'Y PCB CN43 connector and measure
the sensor resistance with an ohmmeter (tester)
between Pin #1 and #2.
ASS'Y Sensor Replace
Is the sensor resistance value
10K: ±3% at the room temperature
No
SENSOR Resistance Value :
SENSOR Resistance Value :
SENSOR Resistance Value :
:
:
:
:
Yes
Connect the sensor to CN43,
supply power, and measure the voltage of
#1 and #2 of the CN43 connector.
Below 0.5V?
Yes
Poor ASS'Y PCB Replace
No
Yes
Over 4.9V?
Poor ASS'Y PCB Replace
No
MICOM Error or Connector(CN43) check
3-4
Samsung Electronics
Alignment and Adjustments
3-2-2 Room Pipe sensor Error
Error Mode
LAMP
7-segment Display
Indoor unit heat exchanger temperature sensor error
(open or short)
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 Pin #3 and #4.
Temperature( C)
Resistance Value(Kohm)
Temperature( C)
Resistance Value(Kohm)
15
14.68
30
8.31
20
12.09
35
6.94
25
10
40
5.83
Others
The data tolerance
is ±3%.
If the above data is not met, replace the room pipe sensor.
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)
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3-5
Alignment and Adjustments
3-2-3 Indoor Unit Fan Motor Error
Error Mode
LAMP
7-segment Display
Indoor Unit Fan Motor Malfunction
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
Check as in the procedure "No power".
Does the OPERATION lamp blink?
Yes
Does the Solid State Relay(SS71) work properly?
Test rod location
+
-
SS71-
SS71-
No
Micom is
out of order.
Micom should be replaced
Normal
Voltage
12V
Yes
No
Is the supply voltage of the fan motor sufficient?
Test rod location
PCB CN72
Condition
pin #3 and #5
Fan operating
PCB is
out of order.
PCB should be replaced.
Normal
voltage
About AC180V
Motor Fan-Capacitor is out of order
Replace Motor
Fan-Capacitor
Yes
Fan motor is out of order.
3-6
Fan motor should be replaced.
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3-3 Setting Option Setup Method
ex) Option No. :
Step 1 : Enter the Option Setup mode.
1st
Take out the batteries of remote control.
2nd
Press the temperature
insert the battery again.
3rd
Make sure the remocon display shown as
button simultaneously and
.
Step 2 : Enter the Option Setup mode and select your option according to the following procedure.
1
The default value is
Otherwise, push the
.
button to
.
Every time you push the button, the display panel reads
or
repeatedly.
2
3
button to set the display panel to
.
Every time you push the button, the display panel reads
...
repeatedly.
2
3
1
Push the
button to set the display panel to
.
Every time you push the button, the display panel reads
...
repeatedly.
4
5
Push the
6
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
Setting is not required if you must
a value which has a
default.
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Push the
button to set the display panel to
.
Every time you push the button, the display panel reads
...
repeatedly.
3-7
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
8
9
Push the
button to set the display panel to
.
Every time you push the button, the display panel reads
...
repeatedly.
7
10
10
11
Push the
12
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.
Setting is not required if you must
a value which has a
default.
Step 3 : Upon completion of the selection, check you made right selections.
Press the Mode Selection key,
The display part shows
Press the Mode Selection key,
The display part shows
to set the display part to
and check the display part.
.
to set the display part to
and check the display part.
.
Step 4 : Pressing 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
1st If all lamps of indoor unit are flickering, plug out, plug in power plug again and press the ON/OFF key to retry.
2nd 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.
3-8
Samsung Electronics
Alignment and Adjustments
QOPTION ITEMS
REMOCON
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
AQ09MSBN
0
6
7
0
1
4
1
7
0
2
4
E
AQ12MSBN
0
6
0
0
0
0
1
5
0
2
4
E
AQ18MSBN
0
8
7
0
2
7
1
8
0
3
8
2
AQ24MSBN
0
8
0
0
0
0
1
8
0
3
8
2
MODEL
Samsung Electronics
3-9