SERVICE MANUAL
SERVICE MANUAL
Mini-Split Air Conditioner
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Read this manual before installation and operation
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• Conditions
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Outdoor : DB35˚C/WB23.9˚C
Indoor air flow : Turbo
Pipe length : 5m
10
• Conditions
Indoor : DB21.1˚C/WB15.6˚C
Outdoor : DB8.33˚C/WB6.11˚C
Indoor air flow : Turbo
Pipe length : 5m
2
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20
30
40
50
60
70
80
90
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Compressor speed (rps)
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Cooling
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11
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Pipe length : 5m
10
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Heating
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110
100
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Capacity ratio (%)
Capacity ratio (%)
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90
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80
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65
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60
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1
ON/OFF Button
2
MODE Button
3
+/- Button
4
FAN Button
5
Button
6
CLOCK Button
7
TIMER ON/TIMER-OFF Button
8
X-FAN Button
2
1
3
4
5
6
8
7
9
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10
9
10
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12
11
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LIGHT Button
12
SLEEP Button
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Set fan speed
Operation mode
Send signal
Auto mode
Cool mode
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Dry mode
Fan mode
Heat mode
Set temperature
Turbo mode
Set time
Clock
TIMER ON/TIMER OFF
Sleep mode
Child lock
Temp. display type
Light
:Set temp.
:Indoor ambient temp.
:Outdoor ambient temp.
Up&down swing
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Signal sender
Battery
Reinstall
Cover of
battery box
Remove
Panel
Emergency operation
switch
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ON/OFF
1
2
Press it to start or stop operation.
▲ : Press it to increase temperature setting.
3
MODE
Press it to select operation mode
(AUTO/COOL/DRY/FAN/HEAT).
4
SWING
5
Press it set swing angle.
: Press it to decrease temperature setting.
FAN
Press it to set fan speed.
2
3
▲
6
1
7
TIMER OFF
4
8
CLOCK
TIMER ON
SLEEP
TEMP
TURBO
X-FAN LIGHT
Press it to set auto-off timer.
6
5
Press it set clock.
9
8
7
9
12
11
10
10
15
14
13
Press it to set auto-on timer.
11
12
13
Press the button left to turn X-FAN function on/off.
Press the button right to turn on/off the light.
14
15
I FEEL
/
Press it to set HEALTH or AIR function.
29 26 28
27
25
30
24
16
23
22
17 18 19 20
16
21
MODE icon:
If MODE button is pressed, current operation mode icon
(AUTO),
( COOL),
(DRY),
(FAN) or
(HEAT is only for heat
pump models) will show.
17
SLEEP icon :
is displayed by pressing the SLEEP button. Press this button again to clear the display.
18
LIGHT icon:
is displayed by pressing the LIGHT button.Press LIGHT button again to clear the display.
19
TEMP icon:
Pressing TEMP button,
(set temperature),
(indoor ambient temperature),
(outdoor ambient temperature)(Optional for some
models) and blank is displayed circularly.
20
Up & down swing icon:
is displayed when pressing the up & down swing button. Press this button again to clear the display.
7HFKQLFDO,QIRUPDWLRQ
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21
LOCK icon:
is displayed by pressing "+" and “-” buttons simultaneously.Press them again to clear the display.
22
SET TIME display:
After pressing TIMER button, ON or OFF will blink.This area will show the set time.
23
DIGITAL display:
This area will show the set temperature. In SAVE mode,"SE" will be displayed. During defrosting operation, “H1” will be displayed.
24
AIR icon:
is displayed when pressing the AIR button.Press this button again to clear the display.(Optional for some models.)
25
HEALTH icon:
26
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.
27
TURBO icon:
is displayed when pressing theTURBO button.Press this button again to clear the display.
FAN SPEED display:
28
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.
I FEEL icon:
29
is displayed when pressing the I FEEL button.Press this button again to clear the display.
8ć Heatingicon:
30
is displayed when Pressing “TEMP” and “CLOCK” simulta-neously in Heat mode.
Remote Controller Description
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 increase set temperature. Holding it down above 2 seconds rapidly increases set temperature. In AUTO mode,
set temperature is not adjustable.
3 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.
4
SWING:
Press this button to set up &down swing angle, which circularly changes as below:
OFF
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:
▲
5
:
Press this button to decrease set temperature.Holding it down above 2 seconds rapidly decreases set temperature. In AUTO
mode, set temperature is not adjustable.
6 FAN :
This button is used for setting Fan Speed in the sequence that goes from AUTO,
,
, to
, then back to Auto.
Auto
Low speed
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Medium speed
High speed
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7 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.
8 CLOCK :
Press CLOCK button,
blinking. 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
will be constantly displayed.
9 TIMER ON :
Press this button to initiate the auto-ON timer. To cancel the auto-timer program, simply press this button again. After press of this
disappears and "ON "blinks .00:00 is displayed for ON time setting. Within 5 seconds, press + or - button to adjust the time
button,
value. Every press of either button changes the time setting by 1 minute. Holding down either button rapidly changes the 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.
10 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. This function is available in COOL , HEAT (Only for models with heating function) mode to maintain
the most comfortable temperature for you.
11 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:
no display
When selecting " " 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 "
set temperature.
• It’s defaulted to display set temperature when turning on the unit.
• Only for the models with temperature indicator on indoor unit.
"and indoor unit displays
12 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.
:
13 X-FAN
X-FAN function: 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.
function: turn on the display's light and press this button again to turn off the display's light. If the light is turned on ,
is
displayed. If the light is turned off,
disappears.
14 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.
15
/
Press this button to achieve the on and off of healthy and scavenging functions in operation status.Press this button for the
first time to start scavenging function; LCD displays“ ”. Press the button for the second time to start healthy and scavenging
functions simultaneously; LCD displays“ ” and “ ” . Press this button for the third time to quit healthy and scavenging functions
simultaneously. Press the button for the fourth time to start healthy function; LCD display “
”. Press this button again to repeat
the operation above. (This function is applicable to partial of models)
16 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,
blinks three times.
is displayed. In this case,
17 Combination of "MODE " and "-" buttons : About switch between Fahrenheit and centigrade At unit OFF, press "MODE" and " -" buttons
simultaneously to switch between ć and ̧.
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18 Combination of " TEMP " and "CLOCK" buttons : About Energy-saving Function
Press “TEMP” and “CLOCK” simultaneously in COOL mode to start energy-saving function.Nixie tube on the remote controller displays
“SE”. Repeat the operation to quit the function.
19 Combination of " TEMP " and "CLOCK" buttons : About 8℃ Heating Function
Press “TEMP” and “CLOCK” simultaneously in HEAT mode to start 8℃ Heating Function Nixie tube on the remote controller displays
“ ” and a selected temperature of “ 8℃”. (46̧ if Fahrenheit is adopted). Repeat the operation to quit the function.
20 About Back-lighting Function
The unit lights for 4s when energizing for the first time, and 3s for later press.
Replacement of Batteries
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.
ƾ 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
batteries out and reinsert them after 30 seconds.If it still can't operate properly,
replace the batteries.
7HFKQLFDO,QIRUPDWLRQ
Sketch map for
replacing batteries
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Space to the ceiling
15cm
Above
Space to the wall
15cm Above
15cm Above
Space to the wall
300
cm
Above
250
cm
Above
Air outlet side
Space to the floor
Space to the obstruction
50cm Above
The dimensions of the space necessary for proper
installation of the unit include the minimum
permissible distances to adjacent parts.
Air inlet side
cm
0
20
cm
Ab
30
Space to the wall
o
Ab
e
ov
30cm Above
ve
Space to the wall
50cm Above
Air outlet side
Schematic diagram being reference only (outdoor unit is with variation),
please refer to real product for authentic information.
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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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Neutral wire, live wire
Neutral wire, live wire
Electrolytic capacitor of DC bas bar
Electrolytic capacitor of switch power
160V-265V
160V-265V
DC 180V-380V
DC 180V-380V
D10 (IPM module +15V)
DC 14.5V-15.6V
Test 6
Both ends of electrolytic
C40 (+12V power)
capacitor C40
DC 12V-13V
Test 7
Both ends of electrolytic C82 (+5V power)
capacitor C82
DC 5V
Test 8
Both ends of electrolytic
C225 (+3.3V power)
capacitor C225
DC 3.3V
Test 9
Test 10
Test 11
Test 12
Test 13
Test point
Between S and T
Between point N and
GND
U12
Between point M and
GND
U15
Communication circular current
R78 to N terminal (ground) (signal receiving
terminal of outdoor unit)
Between 1 and 2 at leading foot of U12
R75 to M terminal (signal sending terminal of
outdoor unit)
Between 3 and 4 at leading foot of U15
DC 56V
Jumping between 0V and 3.3V
Jumping between 0V and 3.3V
Jumping between 0V and 3.3V
Jumping between 0V and 3.3V
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Malfunction indicator of outdoor unit
;7
ZLUH
Turn on the unit
and wait 1 minute
Use DC voltmeter
to measure the
voltage on the two
ends of electrolytic
capacitor(test 8)
Voltage higher than 200V?
Y
Fault with the voltage
testing circuit on
control panel AP1
Replace the control
panel AP1
N
Measure the AC voltage between
terminalL and N on wiring board
XT
Voltage within
210VAC~250VAC?
N
Shut down the power
and repair the power
supply to restore the
range
210VAC~250VAC
power on and
restart the unit
If the fault is
eliminated?
Y
Y
Shut down the power and wait 20 minutes;
or use DC voltmeter to measure the voltage
on the two ends of capacitor , until the
voltage is lower than 20V
N
Check the
connection of reactor
(L in the Electrical
Wiring Diagram)
If the wiring of
reactor L is normal?
N
Connect the reactor
L according to Electrical Wiring Diagram correctly
Re-energize and
turn on the unit
If the fault is
eliminated?
Y
Y
Replace the control
panel AP1
N
End
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Fault with outdoor unit)
Malfunction indicator of outdoor unit
Malfunction
D5
IMP protection
Out-of-step fault
Compressor overcurrent
D6
D16
D30
,
Energize and
switch on
IPM protection
occurs after the
machine has run for
a period of time?
Y
Use AC voltmeter
to measure the
voltage between
terminal L and N
on the wiring
board XT)
If the voltage
between terminal L
and N on wiring
board XT is within
210VAC~250VAC?
N
Check the supply
voltage and
restore it to
210VAC~250VAC
Y
Restart the unit. Before
protection occurs,
use DC voltmeter to
measure the voltage
between the two
ends of electrolytic
capacitor on control
panel AP1
Voltage between
the two ends of celectrolytic
capacitoUWHVW
is
higher than
250V
Y
Please confirm:
1. If the indoor and
outdoor heat
exchangers are
dirty? If they are
obstructed by other
objects which affect
the heat exchange
of indoor and
outdoor unit.
2. If the indoor and
outdoor fans are
working normally?
3. If the environment
temperature is too
high, resulting in
that the system
pressure is too high
and exceeds the
permissible range?
4. If the charge
volume of
refrigerant is too
much, resulting in
that the system
pressure is too
high?
5. Other conditions
resulting in that the
system pressure
becomes too high.
The connection
of capacitor C2
is loose.
Reconnect the
capacitor C2 according
to Electrical Wiring
Diagram. Then,
Restart the
unit.
Y
N
Stop the unit and
disconnect the power
supply. Wait 20 minutes,
or use DC voltmeter to
measure the voltage
between the two ends of
capacitor C2, until the
voltage is lower than 20V
Remove the wires
on the two ends of
capacitor C2. Then,
use capacitance
meter to measure
the capacitor C2.
Verify as per the
Parameters Sheet.
If capacitor
C2 is failed?
Replace the capacitor
C2. Then, energize
and start the unit.
Y
Replace the
control panel AP1
N
If there is any
abnormality
described above?
Y
Y
Take corrective actions
according to Technical
Service Manual, and
then energize and start
the unit.
Connect the control panel
AP1 and compressor
COMP correctly according
to the Electrical Wiring
Diagram. Then, energize
and start the unit.
If the
resistance is
normal?
N
N
If the unit can
work normallv?
If the unit can
work normally?
Y
Y
N
Replace the
control panel AP1
N
Use ohmmeter to
measure the resistance
between the three
terminals on compressor
COMP, and compare the
measurements with the
compressor resistance on
Service Manual.
Y
N
Stop the unit and
disconnect the power
supply. Then, check
the connection of
capacitor C2
according to Electrical
Wiring Diagram.
Refer to the
Electrical Wiring
Diagram and check
if the connection
between AP1 and
COMP is loose and if
the connection order
is correct.
If the connection
between AP1 and
COMP is unsecure
or the connection
order is wrong?
If the unit can
work
normally?
N
If the unit can
work
normally?
If the unit can
work normally?
Y
N
Y
Replace the
compressor
COMP
N
Use ohmmeter to
measure the resistance
between the two
terminals of compressor
COMP and copper tube.
Resistance higher
than 500MΩ?
Y
Replace the
control panel
AP1
END
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Check
the indoor
unit in cooling mode and check
in heating mode
Malfunction indicator of outdoor unit
check points:
(including if the fan speed is too low)
tube temperature sensor of indoor and outdoor unit normal
Overload and high
temperature protection
Is outdoor ambient temperature
Y
in cooling mode? /Is indoor and outdoor
higher than 53
ambient temperature too high in
heating mode?
Normal protection, please operate
it after the outdoor ambient temperature is normalized.
N
Is heat dissipation of the indoor unit
and outdoor unit abnormal?
Y
Improve the heat dissipation
environment of the unit
N
1. Check if the fan terminal
OFAN is connected correctly
Does the indoor and outdoor fan
work normally?
N
2. If the indoor and outdoor
motor is broken
Y
Check if the temperature sensor is normal
according to the Resistance Table of Tube
Temperature Sensors(check outdoor tube
temperature in cooling mode and check
indoor tube temperature in heating mode)
Y
Replace the fan
capacitor C1
Is the tube temperature sensor normal?
Replace the
outdoor fan
Shut down the power and wait 20min
N
Replace corresponding
Replace corresponding control board (replace outdoor
control board in cooling mode and replace indoor control
board in heating mode)
tube temp. sensor
End
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Fault with outdoor unit)
Malfunction indicator of outdoor unit
check points:
ly
I
too much
Power on the unit
Is stop time of the compressor longer
than 3 minutes?
Restart it up after 3 minutes
N
Y
Are the wires for the
compressor(UVW) connected correctly? Is
connection sequence right?
Connect the wires between control
N
panel AP1 and compressor as
per the wiring diagram
Y
Does the unit start
up normally?
Is the charge volume of refrigerant
N
too much?
Y
Charge refrigerant according
to the service manual
Does the unit start
up normally?
Y
N
Replace the control panel AP1
If the fault is
eliminated?
N
Replace the
compressor
End
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Fault with outdoor unit)
Malfunction indicator of outdoor unit
check points:
Out of step occurs once
the unit is powered on
Out of step occurs in
operation
Is stop time of the
compressor longer than
3 minutes?
Is the outdoor fan working
normally?
N
N
Check if the fan terminal
OFAN is connected correctly
Replace the fan
capacitor C1
Y
Y
Is heat dissipation of the unit
Are the wires for the
compressor connected correctly? Is the
connection made in clockwise
direction?
N
Y
Is the input voltage normal?
abnormal?
N
Connect the
wires correctly
Replace the control
panel AP1
N
Start the unit after input
volatge is normal
Replace the
outdoor fan
Y
Is the
charge volume of refrigerant
too much?
Y
Y
Improve the heat dissipation
of the unit(eg. clean heat
exchanger, improve
ventilation, etc.)
If the fault is eliminated?
N
N
Replace the control
panel AP1
Charge refrigerant according
Y
to the service manual
Replace the
compressor
If the fault is eliminated?
End
N
Y
Replace the
compressor
End
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Fault with outdoor unit)
Malfunction indicator of outdoor unit
Malfunction
Overload
Air exhaust
D5
D6
D16
D30
check points:
electronic expansion valve
the electronic expansion valve
overload protector
the air exhaust temperature sensor damaged
20 minutes after
the unit is
powered off
Is the overload protector SAT
connected well?
N
Y
Check if the resistance
of overload protector is less than 1000ohm
in ambient temp.
Y
N
Is the terminal FA of
the electronic expansion valve connected
correctly?
N
Connect the wires
correctly according
to wiring diagram
Y
Check if the coil of electronic expansion
valve is installed correctly on the valve
Replace the
overload
protector SAT
Check if the electronic expansion
valve is blocked
Y
If the fault is eliminated?
N
Check if the refrigerant is leaked,
if yes, recharge refrigerant
Y
If the fault is eliminated?
N
Check if the air exhaust
temperature sensor is normal according to
the Resistance Table
N
Replace the air
exhaust temp. sensor
Y
Replace the outdoor
control panel
End
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7
Malfunction indicator of outdoor unit
check points
of indoor mainboard
of outdoor mainboard(AP1)
ed
is
damage?
Start
Did the equipment operate
normally before the failure
occurs?
Y
N
Check the wiring of the indoor
and outdoor units according to
the wiring diagram
Check if the controller connection wire
inside the electric box of indoor and
outdoor unit is loose
Y
Is the connection right?
N
N
Correctly connect the
corresponding wires for
the indoor and outdoor
units according to
the wiring diagram
If the connection
wire inside electric box
is normal?
N
Correctly connect the
wires for the indoor and
outdoor units according
to the wiring diagram
Y
Check the communication
circuit of the outdoor unit
N
If the fault is eliminated?
Y
If the fault is
eliminated?
Replace the mainboard
(AP1) of outdoor unit
The communication
circuit is abnormal
N
If the fault is eliminated?
Replace the mainboard
of indoor unit
Y
Y
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End
Y
6HUYLFH0DQXDO
Detection process of outdoor communication circuit (refer to the outdoor key detection points)
Start
Test the voltage
of Test 10
The value is changing
N
Y
Test the voltage
of Test 13
Y
The value is changing
N
Y
Fault of outdoor
End
unit
Test the voltage
of Test 11
The value is changing
N
Y
Test the voltage
of Test 12
N
The value is changing
Y
Outdoor
communication
circuit is normal
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2013 Johnson Controls, Inc.
www.johnsoncontrols.com
Doc.MUHJZHAMQ-130508
Johnson Controls reserve the right to change product features without prior notice.
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