Service Manual
Change for Life
Service Manual
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filter
B heat exchanger
fan
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outdoor heat exchanger
4-way valve
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SP
filter
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high pressure switch
Note: Not available for 14K/18K
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discharge silencer
C heat exchanger
C3
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filter
D3
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filter
D2
gas -liquid separator
inverter compressor
D heat exchanger
discharge temperature
sensor
Note: Not available for 14K/18K model
A1:A-unit electronic expansion valve B1:B-unit electronic expansion valve
C1:C-unit electronic expansion valve D1:D-unit electronic expansion valve
A2:A-unit gas pipe temperature sensor B2:B-unit gas pipe temperature sensor
C2:C-unit gas pipe temperature sensor D2:D-unit gas pipe temperature sensor
A3:A-unit liquid pipe temperature sensor B3:B-unit liquid pipe temperature sensor
C3:C-unit liquid pipe temperature sensor D3:D-unit liquid pipe temperature sensor
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ON/OFF
Press it to start or stop operation.
-:
Press it to decrease temperature setting.
+:
Press it to increase temperature setting.
FAN
Press it to set fan speed.
MODE
Press it to select operation mode (AUTO/COOL/DRY/FAN/HEAT).
I FEEL
Press it to set HE ALTH function
8
9
10
Press it to set AIR function.
CLOCK
Press it set clock.
TIMER ON
Press it to set auto-on timer.
11
12
13
14
15
16
17
Press it set swing angle.
X-FAN
TEMP
TIMER OFF
Press it to set auto-off timer
TURBO
SLEEP
LIGHT
Press it to turn on/off the light.
31 30 29
28
27
26
25
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18
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MODE icon:
If MODE button is pressed, current operation mode icon
models) will show.
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(AUTO),
( COOL),
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SLEEP icon :
is displayed by pressing the SLEEP button. Press this button again to clear the display.
20
TEMP icon: (“
”function is applicable to partial of models.)
Pressing TEMP button,
(set temperature),
21
Up & down swing icon:
22
LIGHT icon:
23
LOCK icon:
24
SET TIME display:
(ambient temperature),
(outdoor ambient temperature) and blank is displayed circularly.
is displayed when pressing the up & down swing button. Press this button again to clear the display.
is displayed by pressing the LIGHT button. Press LIGHT button again to clear the display.
is displayed by pressing "+" and “-” buttons simultaneously. Press them again to clear the display.
After pressing TIMER button, ON or OFF will blink.This area will show the set time.
25
TURBO icon:
26
DIGITAL display:
is displayed when pressing the TURBO button.Press this button again to clear the display.
This area will show the set temperature.During defrosting operation,“H1” will be displayed.
27
AIR icon: (NOTE: This function is applicable to partial of models.)
28
I FEEL icon:
29
FAN SPEED display:
is displayed when pressing the AIR button.Press this button again to clear the display.
is displayed when pressing the I FEEL button. Press this button again to clear the display.
Press FAN button to select the desired fan speed setting (AUTO-Low-Med-High).Your selection will be displayed in the LCD windows,
except the AUTO fan speed.
30
HEALTH icon:
31
X-FAN icon:
is displayed when pressing the HEALTH button. Press this button again to clear the display.
is displayed when pressing the X-FAN button. Press this button again to clear the display.
1
ON/OFF:
Press this button to turn on the unit .Press this button again to turn off the unit.
2
-:
Press this button to decrease set temperature. Hold it down for above 2 seconds to rapidly decrease set temperature. In AUTO mode, set
temperature is not adjustable.
3
+:
Press this button to increase set temperature. Hold it down for above 2 seconds to rapidly increase set temperature. In AUTO mode, set temperature is not adjustable.
4
FAN :
This button is used for setting Fan Speed in the sequence that goes from AUTO,
,
,
to then back to Auto.
AUTO
Low speed
Medium speed
High speed
5 MODE :
Each time you press this button, a mode is selected in a sequence that goes from AUTO,COOL,DRY, FAN,and HEAT *, as the following:
AUTO
COOL
DRY
FAN
HEAT *
*Note: Only for models with heating function.
After energization, AUTO mode is defaulted. In AUTO mode, the set temperature will not be displayed on the LCD, and the unit will
automatically select the suitable operation mode in accordance with the room temperature to make indoor room comfortable.
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I FEEL:
Press this button to turn on I FEEL function. The unit automatically adjust temperature according to the sensed temperature. Press this button
again to cancel I FEEL function.
7
Press this button to set HEALTH function ON or OFF. After the unit is turned on, it defaults to HEALTH function ON.
8
(NOTE: This function is applicable to partial of models.)
Press this button to select AIR function ON or OFF.
9
CLOCK :
Pressing CLOCK button,
blinks. Within 5 seconds, pressing + or - button adjusts the present time. Holding down either button above 2
seconds increases or decreases the time by 1 minute every 0.5 second and then by 10 minutes every 0.5 second. During blinking after
setting, press CLOCK button again to confirm the setting, and then
10
will be constantly displayed.
TIMER ON :
Press this button to initiate the auto-ON timer. To cancel the auto-timer program, simply press this button again.
After pressing this button,
disappears and " ON " blinks . 00:00 is displayed for ON time setting. Within 5 seconds, press + or - button to
adjust the time value. Every press of either button changes the time setting by 1 minute. Holding down either button rapidly changes the time
setting by 1 minute and then 10 minutes. Within 5 seconds after setting, press TIMER ON button to confirm.
11
Press this button to set up & down swing angle, which circularly changes as below:
AUTO
This remote controller is universal. If any command ,
,
or
is sent out,the unit will carry out the command as
indicates the guide louver swings as:
12
X-FAN:
Pressing X -FAN button in COOL or DRY mode, the icon
is displayed and the indoor fan will continue operation for 2 minutes in order to
dry the indoor unit even though you have turned off the unit. After energization, X-FAN OFF is defaulted. X-FAN is not available in AUTO,
FAN or HEAT mode.
13
TEMP:
Press this button, you can see indoor set temperature, indoor ambient temperature on indoor unit’s display. The setting on remote controller
is selected circularly as below:
When selecting "
"
no display
" with remote controller or no display, temperature indicator on indoor unit displays set temperature; When selecting
" with remote controller,temperature indicator on indoor unit displays indoor ambient temperature; 3s later or within 3s it receives other
remote control signal that will return to display the setting temperature.
Caution:
●This model hasn't outdoor ambient temperature display function. While remote controller can operate "
"and indoor unit displays
set temperature.
●It’s defaulted to display set temperature when turning on the unit.
●Only for the models with temperature indicator on indoor unit.
14
TIMER OFF :
Press this button to initiate the auto-off timer. To cancel the auto-timer program, simply press the button again. TIMER OFF setting is the
same as TIMER ON.
15
TURBO:
Press this button to activate/deactivate the Turbo function which enables the unit to reach the preset temperature in the shortest time. In
COOL mode, the unit will blow strong cooling air at super high fan speed. In HEAT mode, the unit will blow strong heating air at super high
fan speed. (This function is not applicable for some models).
16
SLEEP:
Press this button to go into the SLEEP operation mode. Press it again to cancel this function. This function is available in COOL, HEAT
(Only for models with heating function) mode to maintain the most comfortable temperature for you.
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LIGHT:
Press LIGHT button to turn on the display's light and press this button again to turn off the display's light. If the light is turned on,
displayed. If the light is tunrned off ,
18
Combination of "+" and "-" buttons: About lock
Press "+" and "-" buttons simultaneously to lock or unlock the keypad. If the remote controller is locked,
pressing any button,
19
is displayed. In this case,
blinks three times.
Combination of "MODE" and "-" buttons: About switch between Fahrenheit and Centigrade
At unit OFF, press "MODE" and "-" buttons simultaneously to switch between °C and °F.
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1.Remove the battery cover plate from the rear of the remote controller.
(As shown in the figure)
2.Take out the old batteries.
3.Insert two new AAA1.5V dry batteries, and pay attention to the polarity.
4. Reinstall the battery cover plate.
★Notes:
●When replacing the batteries, do not use old or different types of batteries,
otherwise, it may cause malfunction.
●If the remote controller will not be used for a long time, please
remove batteries to prevent batteries from leaking.
●The operation should be performed in its receiving range.
●It should be kept 1m away from the TV set or stereo sound sets.
●If the remote controller does not operate normally, please take the
Sketch map for
replacing batteries
batteries out and reinsert them after 30 seconds. If it still can't operate properly,replace the batteries.
is
disappears.
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Cooling
operation
With compressor capacity supplied
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12. Compulsory defrosting function
(1) Entry condition of compulsory defrosting function
Under heating operation and set temperature is 16ć, press “+, -, +, -, +, -” successively within 5s and indoor unit will
enter into compulsory defrosting setting. Indoor unit will send compulsory defrosting model signal to outdoor unit. When
outdoor unit received compulsory defrosting signal from indoor unit, the unit will operate under normal defrosting model.
When indoor unit received the signal that outdoor unit has entered into defrosting status, it will cancel to send compulsory
defrosting mode to outdoor unit. Heating indicator on indoor unit will be OFF 0.5 and ON 10s successively.
˄2˅ Exit condition of compulsory defrosting function
After defrosting is finished, outdoor unit will send normal operation mode to indoor unit. When indoor unit received the
normal operation model from outdoor unit, the unit will operate as the normal mode.
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(1) Entry condition of Freon recovery (Freon recovery mode)
Enter into refrigerant recovery mode actively (Freon recovery mode˅: After energized for 5min, turn on the unit under
cooling mode and set 16ć, press light button for 3 times within 3s to enter into Freon recovery mode, Fo is displayed.
Freon recovery model will be sent to outdoor unit.
Enter into refrigerant recovery mode passively: When indoor unit hasn’t set Freon recovery mode, if it received Freon
recovery signal from outdoor unit, indoor unit will enter into Freon mode and it will also send Freon recovery mode to
outdoor unit. Fo will be displayed.
(2) Exit condition of refrigerant recovery function (Freon recovery mode)
Exit refrigerant recovery mode actively (Freon recovery mode): After entering into Freon recovery mode, if it has received
any signal from remote controller or entered into Freon recovery mode for 25min, the unit will exit Freon recovery mode.
Exit refrigerant recovery mode passively (Freon recovery mode): If it can’t receive Freon recovery mode fro outdoor unit
any more, the unit will exit Freon recovery mode and indoor unit will stop sending Freon signal to outdoor unit.
The action of entering into Freon recovery mode: Indoor unit operates under cooling mode. Fan speed is super high speed
and set temperature is 16ć. Horizontal louver will stay at the minimum operation angle.
The action of exiting Freon recovery mode: Indoor unit operates as the previous setting status of remote controller.
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Start installation
Preparation before installation
Read the requirements
for electric connection
select installation
location
Select indoor unit
installation location
Prepare tools
Select outdoor unit
installation location
Install the support of outdoor unit
(select it according to the actual situation)
Install wall-mounting
frame, drill wall holes
Connect pipes of indoor
unit and drainage pipe
Fix outdoor unit
Connect wires of indoor unit
Install drainage joint of outdoor unit
(only for cooling and heating unit)
Bind up pipes and
hang the indoor unit
Make the bound pipes pass
through the wall hole and then
connect outdoor unit
Connect pipes of outdoor unit
Connect wires of outdoor unit
Neaten the pipes
Vacuum pumping and leakage detection
Check after installation and test operation
Finish installation
Note: this flow is only for reference; please find the more detailed installation steps in this section.
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Start
Is the wiring
terminal between temperature
sensor and the controller loosened or
poo rly contacted?
yes
Insert the temperature
sensor tightly
no
no
Is there short circuit due to tri-pover
of the pa rts?
Malfunction is
eliminated.
yes
Make the parts upright
no
no
Is the tem perature
sensor normal according to the
Resistance Table?
Malfunction is
eliminated.
yes
no
Replace it with a
temperature sensor
of the same model
yes
no
Malfunction is
removed.
yes
Replace the controller with
one of the same model
yes
End
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6HUYLFH0DQXDO
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Troubleshooting for
H6 malfunction
Stir the blade
with a tool to see whether
the blade rotates
smoothly
yes
no
Tighten the screw; reassemble the blade, motor
and shaft bearing rubber base sub-assy to make
sure there is no foreign object between them
Is malfunction
eliminated
no
Is the
control terminal of PG motor
connected tightly ?
yes
no
Insert the control
terminal of PG
motor tightly
yes
Is malfunction
eliminated
no
Stir the blade by
hand to see whether
the blade rotate s
smoothly
yes
no
Reinstall the blade and
motor correctly
yes
no
Turn on the
unit again ; measure whether the output
voltage on control terminal for PG motor
is more than 50V within 1 min after the
louvers are opened
yes
Measure the voltage of this foot to neutral
wire on the mainboard
Is malfunction
eliminated
yes
yes
yes
Is the motor
started up
no
no
Replace PG motor
no
Is malfunction
eliminated
yes
Replace the mainboard
with the same model.
End
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6HUYLFH0DQXDO
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Troubleshooting for C5
malfunction
Is there jumper cap on the
mainboard?
no
Appearance of
the jumper cap
Assemble the jumper
cap with the same
model
yes
Is malfunction
eliminated
no
Is
the jumper cap inserted
correctly and
tightly ?
no
Insert the
jumper cap
tightly
yes
no
Is malfunction
eliminated
yes
Replace the jumper cap
with the same model
yes
Is malfunction
eliminated
yes
no
Replace the mainboard
with the same model.
End
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6HUYLFH0DQXDO
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Troubleshooting
for U8 malfunction
Re-energize1
minute after
de-erergization
U8 is still
displayed
No
The unit returns to normal.
Conclusion:U8 is displayed due
to instant energization afte deenergization while the capacitor
discharges slowly.
Yes
The zero-cross detection
circuit of the mainboard is
defined abnormal.Replace
the mainboard with the same
model
End
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Communication malfunction of
some indoor units
De-energize the unit and check
if the connecting wire of indoor
and outdoor unit and wiring of
electric box are correct.
Is wire connected
No
Connect wires
according to the
correctly˛
Is malfunction
Yes
removed˛
wiring diagram
No
Yes
De-energize the unit. Change the communication cable
of indoor units. Energize the unit and wait for 3 min
Does the
broken-down indoor
Yes
Replace mainboard
of outdoor unit
unit resume normal?
No
Replace the broken-down
mainboard of the indoor unit
End
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Communication malfunction of
all indoor units
De-energize the unit and check if the
connecting wire of indoor and outdoor unit
and wiring of electric box are correct.
No
Is wire connected
Connect wires
according to the
correctly˛
wiring diagram
Yes
Is malfunction
removed˛
No
Yes
De-energize the unit. Check if the connecting wire
between outdoor mainbaord and filter plate is correct.
Is wire connected
Connect wires
No
according to the
correctly˛
wiring diagram
Yes
Is malfunction
removed˛
No
Yes
Is connecting wire
Yes
damaged˛
Replace the
Is malfunction
connecting wire
removed˛
Yes
No
No
Check if there is power input between
neutral wire and live wire of outdoor unit.
Is there power
No
input?
Replace filter plate of
Is malfunction
outdoor unit
removed˛
Yes
Yes
No
Replace mainboard of outdoor unit
Does communication
resume normal˛
No
Replace mainboard
of indoor unit
Yes
End
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Steps
Procedure
1.Before disassembly
2.Removal of filter and horizontal louver
1
Open the front panel .
2
Push the fi lter inward and then draw itupward
to remove it.
Filter
3
Remove axial sleeve of horizontal louver and
bend the louver slightly. Then remove the
louver.
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Steps
Procedure
Indicator
3.Removal of indicator and front panel
1
Remove connection screw of indicator and
then remove the indicator.
Screw
2
Front Panel Assy
Remove rotating shaft of front panel and then
remove the front panel.
4.Removal of electric box cover 2
Screw
Remove connection screws between electric
box cover 2 and front case. Then remove the
electric box cover 2.
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Steps
Procedure
5. Removal of front case
1
Remove connection screws between front
case and rear case.
Screw
Clasp
2
Release clasp connecting front case and rear
case and then remove the front case.
6. Removal of vertical louver
1
Remove 10 clasps of vertical louver and rear
case assy.
Clasp
2
Remove vertical louver.
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Steps
Procedure
7. Removal of electric box assy
1
Indoor Temp Sensor
Unplug indoor temp sensor.
Electric Box Cover
2
Remove connection screws of electric box
assy and rear case. Release clasps and
remove connection screws of earthing wire
and evaporator assy. Then remove electric
box assy.
8.Removal of evaporator
Electric Box Assy
Pipe Clamp
Auxiliary Piping
1
Turn over the rear case assy and remove
connecting pipe clamp. Release clasps
between connecting pipe clamp and rear case
assy. Then remove connecting pipe clamp.
2
Remove connection screws of evaporator
assy and motor clamp. Release clasps
connecting evaporator assy to rear case. Then
remove evaporator assy.
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Procedure
9.Removal of cross flow fan and motor
1
Remove screws of step motor and then
remove the motor.
Step Motor
2
Remove 4 connection screws of motor clamp
and rear case. Then remove motor clamp.
Motor Press Plat
3
Remove cross flow fan and motor.
O-Gasket Sub-assy of Bearing
4
Removal of ring of bearing sub-assy.
Ring of Bearing
5
Removal of connection screws connecting
cross fl ow fan to motor shaft. Then remove
the motor.
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