Hitachi RPIL-3.0UFE1NH User manual

–
SERVICE MANUAL
PRIMAIRY
LARGE SINGLE SPLIT
DC-INVERTER SERIES
MODELS
MODELS
HS2019324HB
SM)-200313
INDOOR UNITS
OUTDOOR UNITS
DUCTED
RPIL-3.0UFE1NH
RPIH-3.5UFE1NH
RPIH-4.0UFE1NH
RPIH-5.0UFE1NH
RPIH-6.0UFE1NH
RPIH-6.5UFE1NH
CASSETTE
RCI-3.0UFE1NH
RCI-3.5UFE1NH
RCI-4.0UFE1NH
RCI-5.0UFE1NH
RCI-6.0UFE1NH
RCI-6.5UFE1NH
FLOOR CEILING
RPFC-3.0UFE1NH
RPFC-3.5UFE1NH
RPFC-4.0UFE1NH
RPFC-5.0UFE1NH
RPFC-6.0UFE1NH
RPFC-6.5UFE1NH
RAS-3.0UFESNH1
RAS-3.5UFESNH1
RAS-4.0UFESNH1
RAS-5.0UFESMH1
RAS-6.0UFESMH1
RAS-6.5UFESMH1
RAS-5.0UFESNH1
RAS-6.0UFESNH1

Table of Contents
1. Option list ...............................................................................................................................................1
1.1 Wired remote controller ...............................................................................................................1
1.2 Wireless remote controller ..........................................................................................................10
1.3 IR Receiver .................................................................................................................................15
2. Troubleshooting....................................................................................................................................16
2.1 Trouble guide...............................................................................................................................16
2.2 Fault codes .................................................................................................................................21
3. Checking components .........................................................................................................................30
3.1 Check refrigerant system............................................................................................................30
3.2 Check parts unit .........................................................................................................................32
4. Disassembly and assembly for compressor and motor ......................................................................36
5. Control logic description .....................................................................................................................46
5.1 Fan only mode ............................................................................................................................46
5.2 Cooling mode..............................................................................................................................46
5.3 Heating mode ............................................................................................................................47
5.4 Auto mode ..................................................................................................................................48
5.5 Evaporator low-temperature protection ......................................................................................48
5.6 Condenser high-temperature protection.....................................................................................49

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1. Option list
1.1 Wired remote controller (Model：HCWA21NEWH)
Wired remote controller installation
Check that the following accessories are included with the unit before installation：
1pc 1pc
2 pcs 2 pcs
Manual
Quality certification
Screw Controlling cable
Connecting terminal
1pc
NOTE:
Control board of the wired controller is placed on upper cover.
Please protect it from being scratched during removal and installation!
1.Selecting the Installation Location.
Please select the installation location according to safety precautions .
2. Removing the upper cover of the wired controller.
Insert the slotted screwdriver in the slots,
and press on it for removal.
4.
3.Removing the insulating strip of the battery.
Otherwise the wired controller cannot work normally after installation!
Wiring.
Leading out wire
Pull one of the attached controlling cable out of the lower cover from the rear round hole.
Checking accessories
How to install
*Lead out the wire toward the arrow
direction!
①
②Wiring
Circuit board of
wired controller
upper cover lower cover
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A.Connect the controlling cable with upper cover terminal as the figure above.
B.Connect the other attached controlling cable with indoor unit control board.
C.Connect the 2 controlling cables with attached connecting terminal as the figure below:
Controlling cable
YL YL
BL BL
RD RD
BK
Controlling cable
BK
Firmly fasten the connection cord after connection.
GND
RXD
TXD
+12V
GND
RXD
TXD
+12V
5.Securing the lower cover.
Please secure the lower cover with the attached screws (2 pcs) on the wall or embedded box.
Custom parameters
The internal parameters of the wired controller can be set with the actual usage conditions.
The catalogue of custom-setting parameters is shown as follows:
Custom-
setting
parameter
code
Implication of code display Description Remarks
3 boot When “bo” blinks, press “ ” to restore to
factory default and quit parameter set.
6Temperature display setting 0-Display the set temperature;
1-Display the indoor environment temperature
The
factory
setting
defaults to
0
7Temperature measurement
unit display setting 0-Display in Celsius;
1-Display in Fahrenheit degree
8Cooling only setting 0-Heat pump type air conditioner;
1-Cooling only air conditioner
10 Temperature limits revision
setting 0-Not permitted; 1-Permitted
11 Environment temperature
revision setting 0-Not permitted;1-Permitted
Self-setting parameter code
Function code
The method of setting the custom parameters
1Press and hold " ", " " and " " buttons at the same time for 5s, to access the
parameter custom-setting mode, and the screen will display the self-setting parameter code
and icon .
Press the “ " button to select the custom-setting parameter code, and function code will
also be displayed on the LCD.
Press the " " (up) button or " " (minus) button to select the function code and press
2
3
"ON/OFF" button to confirm the setting.
NOTE:
It will directly exit custom setting mode without saving the setting if there is no operation within 30s.
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Parameter setting
The wired controller room temperature display and limit set temperature can be revised if needed.
Before setting, please check if these parameters are enabled to be revised, for details, see
Custom parameters.
1.Temperature limit setting
Default temperature set point range is (16-30)℃. You can change the range when needed. For
example, in cooling mode, temperature adjustment range could be changed to (23-30)℃; in
heating mode, it could be changed to (16-23)℃. The temperature limit is only effective for the
cooling and heating modes.
Temp. limit setting (cooling mode) Temp. limit setting (heating mode)
Room temperature correction
How to quit:
Press the " " button to exit without settings.
2.Room temperature correction
Setting room temperature correction is for particular cases (e.g. remote located at an area with
different temperature from the room) : wired controller is set to display room temperature, but
the room temperature detected is different from the actual room temperature, so setting
correction is necessary.
Room temperature correction value
1
2
3
4
Setting method:
Press and hold the " " and " " button at the same time for 5s to enter parameter setting mode.
Press " " or " " until room temperature icon " " and temp. value start blinking on the screen,
and press " " to enter room temp. correction mode.
Press the " " or " " button to adjust the room temperature value within an offset of ±10℃ of the
current temperature.
Press the " " button to confirm the setting, save the setting and exit.
3
11
2
3
4
5
6
Setting method:
the " " and " " button at the same time for 5s to enter parametPress down the "Press down
Press " " or " " button until set temp. icon " " cooling mode icon " " and temp.all values
blink on the display, press "
" to enter cooling temp. limit setting mode.
Press the " " or "Press the " " or "
" button to adjust the lowest cooling temperature value.
Press the " " button to confirm the setting and enter heating temp. limit setting mode, temp. icon
" " heating mode icon " " and temp. all values will blink on the display.
Press the " " or " " button to adjust the highest heating temp. value.
Press the " " button to confirm the setting, save the setting and exit.

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Align the upper cover with the hasp of lower cover of the wired controller, and then press the
upper cover onto the lower cover.
After installation, tear off protective sticker attached on the display of wired controller.
Upper cover assembly
Hasp
Hasp
1
2
3
4
5
7
6
ON/OFF BUTTON
The appliance will be started or stopped when this button is pressed.
MODE BUTTON
Press this button to select the operation mode.
FAN BUTTON
Used to select fan speed in sequence high- auto-low-medium-high.
TIMER/CLOCK BUTTON
Used to set the current time or set Timer ON/OFF.
UP SETTING BUTTON
Used to raise the setting values or to set the airflow direction.
DOWN SETTING BUTTON
Used to lower the setting values.
LIQUID CRYSTAL DISPLAY(LCD) SCREEN
5
7
1 2 3456
Wired controller introduction
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LCD screen
NOTE:
Mode indication area,which indicate
the current operation mode Timer setting
Operation mode
Fan speed setting
Timer setting
Timer ON
Timer OFF
Timer setting valid only once.
Timer setting valid only for one day.
Timer setting set for a week.
Temperature display
Room temperature
Set temperature
(flickering)
Cooling mode
Auto fan speed
Ultrahigh fan speed
High fan speed
Medium fan speed
Low fan speed
Ultralow fan speed
Heating mode
Dry mode
Fan mode
Auto mode
Fan speed display
Clock
Filter cleaning indicator
Sleep indicator
Error Indicator
Parameter revision indicator
Electric heater indicator
Button lock indicator
Defrost indicator
Display room temperature
/set temperature
Up/Down airflow swing
Left/Right airflow swing
Fahrenheit Temperature
1. Heating and electric heating function are not available for single cooling only models.
2. Air direction, Filter Cleaning, Floor Heat, Electric Heating etc. are only available for specific models.
For details, please refer to the operation manual.
3. Custom-setting parameters must be configured by installer or authorized person.
Basic operation
This wired controller should be used with the air conditioner, it can be used for cooling,
heating, drying and fan etc. For other functions and settings, please refer to the
specific operation in this manual.
1.Turning ON/OFF
Press the button, the appliance will be started or stopped.
2.Mode setting
Press “ ” button to select operation mode.
Each time MODE button is pressed, the operation mode will change in the following sequence:
COOLING FAN ONLY HEATING AUTO
DRY
AUTO mode is invalid for models without AUTO mode when setting.
HEATING mode is invalid for cooling only types or heating-forbidden air conditioners.
:
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3.Temperature setting
Press the " " or " " button to enter the temperature setting state.
Each time “ ” button is pressed , temperature setting increases by 1℃；
Each time “ ” button is pressed , temperature setting decreases by 1℃.
Temperature setting range
COOLING, HEATING, DRY, AUTO 16℃~30℃
FAN ONLY Unavailable for setting
1. Heating mode is invalid for cooling-only air conditioners.
2. The default setting range depends on the indoor unit.
3. Setting range can be changed by professional staff, and for detailed operations, please contact the
installation service/after-sales service center.
4. When the set temperature reaches the upper or lower limits, setting temperature will not increase or
decrease.
” buttons for 5s simultaneously to adjust the airflow direction.
5.Airflow swing setting
Press and hold “ ” and “
The airflow direction setting will change in the following sequence by default:
: This function is only applicable to the air conditioning units with the swing function.
Function set
AUTO fan speed is invalid for “FAN” mode.
AUTO fan speed is the default setting under the DRY mode, unabling adjusting.
4.. Fan speed setting
When the appliance is in working mode, press the " " button to adjust the fan speed.
The fan speed will change in the following sequence:
None
No display
UP-DOWN AND LEFT-RIGHT
Airflow Swing
MEDIUM
HIGH
AUTO
Up/Down Airflow Swing
Left/Right Airflow Swing
(blinking)
LOW
:
:
The maximum cooling/heating capacity can be activated at
the super mode.
How to activate:
Press and hold" " and " " buttons for 5s simultaneously with the working unit to activate the
super mode, and the indoor unit will run at the ultrahigh fan speed, and displays icon.
If you operate the Super mode under COOLING, DRY and FAN ONLY modes, the unit will
automatically go into forced cooling mode with lowest setting temperature, or go into forced
heating mode with highest setting temperature under the heating mode.
How to cancel:
Press " "/" "/" " button to exit immediately.
:
For the indoor units without ultrahigh fan speed function, it will be adjusted to run at high fan speed under
the super mode, with high fan speed mode icon displayed.
The silent mode reduces the noise by changing the fan speed of
indoor unit so as to keep quiet during operation at night.
How to activate:
In the COOLING/HEATING mode during appliance operation, press and hold " "and “ ”
buttons for 5s simultaneously to activate silent mode, the indoor unit will run at the ultralow fan
speed, and displays icon.
How to cancel:
Press " "/" "/" " button to exit.
:
For the indoor units without ultralow fan speed function, it will be adjusted to run at low fan speed
under the silent mode, with low fan speed mode icon displayed.
Super mode
Silent mode
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With the sleep function, the air conditioner will run in the mode
of comfortable sleep to improve comfort.
How to activate:
Press and hold “ ” button for 5s when the appliance is on to set the sleep function. The icon
will be displayed on the LCD, indicating that sleep mode is activated.
How to cancel:
Press and hold “ ” button for 5s again to cancel sleep function. The icon will disappear
from LCD, indicating that sleep mode has been cancelled.
Sleep mode
Button lock
After the wired controller setting is completed, lock buttons to
avoid wrong operation by children and others. User settings
are overwritten with lock function. All operations are disabled
after button lock function has been set.
How to activate:
Press and hold “ ” and " " buttons simultaneously for 5s to activate button lock function, and icon will be
displayed on the LCD.
How to cancel:
Press and hold “ ” and " " buttons simultaneously for 5s again to unlock, and icon will disappear from
the LCD.
FILTER CLEAN screen prompt is only available for some models. For details, please refer to indoor unit manuals.
Be sure to stop the operation and turn off the power supply before performing any cleaning.
When is displayed on LCD, it indicates that the filter
needs to be cleaned.
Please contact professional staff to perform cleaning.
After cleaning, press and hold “ ” and “ ” button for 5s to reset warning prompt.
Filter cleaning reset
(available for models equipped with filter cleaning prompt function; only professional staff should operate this function.）
:
Clock setting
When the clock value is not consistent with the actual time, the clock shall be set.
Setting method:
Press and hold " " button repetitively until icon blinks to
enter clock setting mode. Set the clock in the following
sequence:
MinuteMinute Hour Weekday
Press " / " button to select the desired Minute,
press " " button to set the next item.
Set HOUR/WEEKDAY by the same method as setting MINUTE.
Press “ ” button or wait for 30s without operation to confirm.
1
2
3
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1
2
2
3
3
4
4
1
Single TIMER ON/OFF
Enter “Single TIMER ON/OFF ” setting mode
“Single TIMER ON/OFF ” hour setting
“Single TIMER ON/OFF ” minute setting
“Single TIMER ON/OFF ” confirm
“SINGLE TIMER ON/OFF” cancellation
How to activate:
During OFF condition, repetitively press " " button until icon
ONCE appears, “ON” and clock set are flickering, press “ ”
button to enter Timer ON setting.
Press “ / ” button to adjust the timer hour.
Each time “ ” button is pressed, timer setting increases by 1h.
Each time“ ” button is pressed, timer setting decreases by 1h.
It can be set from 0h to 23h, and timer setting resolution is 1 hour.
Press “ ” button when reaches the desired value.
Set Timer ON minute with the same procedure.
It can be set from 00 to 59 with 1 minute resolution.
Press “ ” button to confirm Single TIMER ON setting.
The display will return to previous screen and icon “ ” will
appear on the upper right corner of the screen.
How to cancel:
To cancel “TIMER ON”, press “ ” button to activate the Timer
ON setting, press “ / ” button to adjust time hour until icon
OFF appears, press “ ” button to confirm cancellation and exit.
You can set Single TIMER OFF with the same method when the
appliance is ON.
:
Pressing and holding down the “ / ” button causes the value to
increase continuously and rapidly.
The Single Daily and Weekly timer functions cannot be set at the same time.
Operation:
Press “ ” button to activate TIMER setting, and press “ / ”
until icon DAILY displays on LCD, “TIMER OFF” and clock setting starts flickering.
Press “ ” button to enter timer OFF hour setting.
Steps are the same as Single TIMER ON/OFF setting.
DAILY ON/OFF TIMER
:
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Weekly Timer Setting Procedure
Operation Procedure
Weekly timer can be used to set on/off time respectively for seven days a week. Air conditioner can be on/off in preset
time every day, without manual control. The air conditioner can be set on/off automatically before you wake up in the
morning, back home from work or during sleep at night.
DAY SELECTION
DAY SELECTION
TIMER OFF HOUR
TIMER OFF MINUTE
TIMER ON HOUR
TIMER ON HOUR
TIMER ON MINUTE
TIMER ON MINUTE
TIMER OFF HOUR
TIMER OFF MINUTE
QUIT
NOTE：
START
Press“ ”button
Press " " button to activate TIMER setting, and press “ / ”
until icon WEEKLY is displayed on LCD
PRESS“TIMER”BUTTON TO ENTER NEXT DAY SETTING(Sun...Sat)
OR
OR
（Turning ON/OFF）
Press the " " button to the next step
Press “ / ” button to select the next day
Weekly Timer
1
2
3
4
5
6
Operation:
Press "" button to activate TIMER setting, and press " "
1
/ " " until icon WEEKLY is displayed on LCD, “TIMER OFF” ,
weekday and clock set are flickering.
” button to enter day of week selection.Press “
Press “ ” / “ ” button to select weekday, display from
sunday to saturday.
” button to enter TIMER OFF hour s
” / “ ” button to select desired timer of hours
Press “Press “
Press “Press “
it can be select from 00-23, or OFF if need to cancel TIMER OFF
function.
Press “Press “
Press “Press “
” button to enter TIMER OFF minutes
/ “ ” button to select desired timer of minute
setting, it can be selected from 00-59.
” button to enter TIMER ON hour setting.Press “
TIMER ON setting is done with the same procedure as TIMER OFF.
Press “ ” button to enter Next Day setting, you can set 7 day
timer on/off time as required.
Confirm or quit WEEKLY TIMER setting by pressing “ ” button,
the weekly timer setting screen will be displayed.
2
3
4
5
Enter “TIMER ON/OFF WEEKLY”mode
“TIMER OFF WEEKLY” weekday selection
“TIMER OFF WEEKLY” hour setting
“TIMER ON WEEKLY” hour setting
“TIMER OFF WEEKLY” minute setting
6
“TIMER ON WEEKLY” minute setting
9
Please set the clock correctly before setting weekly timer.
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1.2 Wireless remote controller (Model：HCRA31NEWH)
Wireless remote controller
34
The remote controller transmits signal to the system.
MODE
Press this button to select the
operation mode.
1
5
7
Used to adjust the room
temperature and the timer.
ON/OFF
The appliance will be started
when it is operational or will
be stopped when it is in
operation, if you press this
button.
FAN
Used to select fan speed in
sequence auto, quiet low,
low, medium and high.
6
9
Used to stop or start vertical
adjustment louver swinging
and set the desired left/right
airflow direction.
10 LEFT/RIGHT
Used to stop or start
horizontal adjustment
louver swinging and set the
desired up/down airflow
direction.
8 UP/DOWN
2TEMP.
1
4
3
7
6
10
8
9
NOTE: ①Each mode and relevant function will be further specified in following pages.
②Heating and electric heating function are not available in single cooling only models.
③Pictures in the manual are for reference only, specifications are subject to change based on the selected model.
Indication symbols on LCD:
Dry indicator
Fan only indicator
Heating indicator
Auto indicator
Cooling indicator
High fan speed
Medium fan speed
Low fan speed
Quiet fan speed
Signal transmit
Battery indicator
Timer ON indicator
Timer OFF indicator
Button locked indicator
Timer ON/OFF set hour
Display set temperature
Auto fan speed Run indicator
OFF indicator
Sleep indicator
Display set temp.indicator
Fan speed indicator
5
11
POWERFUL
Used to start or stop the fast
cooling/heating.
(Fast cooling operates at high
fan speed with 16℃ set temp.
automatically; Fast heating
operates at auto fan speed with
30℃ set temp. automatically).
AUTO
Used to enter fuzzy logic
operation directly.
TIMER
Used to set or cancel the
timer operation.
SLEEP
Used to set or cancel Sleep
Mode operation.
RESET
Back to the factory defaults.
11
10
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How to Use
To operate the room air conditioner, aim the remote controller to the signal receptor.
The remote controller will operate the air conditioner at a distance of up to 8m when pointing at signal
receptor of indoor unit.
How to Insert the Batteries
Remove the battery cover according to the arrow direction.
Insert new batteries making sure that the (+) and (-) of
battery is matched correctly.
Reattach the cover by sliding it back into position.
NOTE:
Use 2 LR03 AAA (1.5volt) batteries. Do not use rechargeable
batteries. Replace batteries with new ones of the same type
when the display becomes dim.
If the batteries are not in use for a prolonged period of time, take the batteries out.
The battery can be used for about 6 months. If the remote controller is not operated even when placing it
near the receiver, replace 2 batteries with the new ones.
Please do not use manganese battery because it may cause malfunction.
Avoid extremely hot or cold locations such as placing it near or over a radiator, or in direct sunlight.
Also avoid placing under fluorescent light.
Do not let children play with the remote controller.
To avoid interference, the indoor unit and the remote controller unit should be at least 1m away from a TV
set or a radio. In case more than two air conditioners are installed in the same room, it may interrupt
individual operation.
CAUTION
Storage and Tips for Using the Remote Controller
remote controller
holder fixing
remote controller
mounting
The remote controller may be stored mounted on a wall with a holder.
NOTE: The remote controller holder is an optional part.
NOTE: The shape may differ from that of the remote controller holder
for the model selected.
The operation modes are changed in sequence:
Selecting mode
Heating mode is NOT available for cooling only air conditioner.
Operation modes
Result:
PressPress button repetitively.
FAN
COOL
DRY
HEAT
PRESS
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�
The fan speed is changed in sequence:
FAN mode
At "FAN" mode, only "Auto" is not available.
At "DRY" mode, Fan speed is set at "AUTO” automatically, "FAN"
button is ineffective in this case.
Setting temperature
Turning on or off
AUTO, POWERFUL, TIMER and SLEEP operation modes will be specified in the
following pages.
Changing modes during operation, sometimes the unit does not respond at once. Wait for 3 minutes.
During heating operation, air flow is not discharged at the beginning. After 2－5 minutes, the air flow will be
discharged until temperature of indoor heat exchanger rises.
Wait for 3 minutes before restarting the appliance.
16℃~30℃
Range of available set temperature
*HEATING, COOLING, DRY
unable to set
FAN
*Note: Heating mode is NOT available for cooling only models.
Press
PressPress button can change the unit operation status.
Result:
Press Press
Auto High
Medium
button
Raise temperature by 1℃.
button
Lower temperature by 1℃.
Press
Result:
Result:
Low
Quiet Low
PRESS
Press MODE button and cancel AUTO mode.
Note: Temperature, airflow and direction are controlled automatically in AUTO mode.
AUTO mode
How to set AUTO mode?
Press the AUTO button.
Result: Enters AUTO mode (fuzzy logic operation).
Mode and fan speed are automatically
set based on the actual room temperature.
PRESS
Your feeling
What you can do in AUTO mode?
Button Adjust
Uncomfortable because
of unsuitable air flow
volume.
Uncomfortable because
of unsuitable flow
direction.
Indoor fan speed alternates among Auto, Low,Medium
and High each time this button is pressed.
Press it once, the horizontal adjustment louver (vertical
adjustment louver) swings to change vertical airflow
direction (horizontal airflow direction). Press it again,
swings stops.
button repetitively.
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How to cancel the AUTO mode?
Press the
Result:
button.
The AUTO mode will be cancelled.
P
P
R
R
E
E
S
S
S
S
NOTE:
POWERFUL button is not available in AUTO mode.
POWERFUL mode
POWERFUL mode is used to start or stop fast cooling or heating only when the unit is on.
In POWERFUL mode, you can set temperature, airflow direction or timer.
How to set POWERFUL mode?
Press POWERFUL button at the cool, dry and fan mode.
Result: At high fan speed, the set temperature
automatically goes to 16℃.
Press POWERFUL button at the heat mode.
Result: At high fan speed, the set temperature
automatically goes to 30℃.
How to cancel POWERFUL mode?
Press POWERFUL, MODE, FAN, ON/OFF button.
Result: The display return to the original mode.
Escape from POWERFUL mode.
PRESS
PRESS
Timer mode
It is convenient to set the timer on with TIMER button when you go out in the morning to achieve a
comfortable room temperature at the time you get home. You can also set timer off at night to enjoy
a good sleep.
How to set TIMER ON?
Press TIMER button when the unit is off.
Result: and flash on the LCD.
1.
PRESS
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NOTE: It is similar to set TIMER OFF, you can make the appliance
switch off automatically at your desired time.
Press the or button.
Once to increase or decrease the time setting by 1 hour.
When your desired time displayed on LCD, press the TIMER button and confirm it.
Result: and stop flashing.
Result:
Press the TIMER button.
Result: The indicator disappears, the timer on mode has been cancelled.
How to cancel TIMER ON?
2.
3.
PRESS
PRESS
PRESS
SLEEP mode can be set in COOLING, HEATING or DRYING mode.
This function gives you a more comfortable environment for sleep.
The appliance will stop operation automatically after operating for 8 hours.
Fan speed is automatically set at low speed.
SLEEP mode
How to set SLEEP mode?
Each time SLEEP button is pressed.
Result: SLEEP function will be started.
PRESS
How to cancel SLEEP mode?
Press AUTO, MODE, SLEEP, ON/OFF or FAN button.
Result: Exist from SLEEP mode.
PRESS
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1.3 IR Receiver (Model: HRBA31NEGH)
Along the arrow
direction into the
ceiling with
a hole punched
Check and confirm that in addition to the IR receiver product the
following accessories are also included in the packaging box.
Qty:1 Qty:1
Please read the Installation Manual supplied with the IR receiver
carefully, and perform installation properly in accordance with these
instructions.
Cut out a hole at the suitable place of the false ceiling with a diameter of
95mm.
Place the connecting wire on the false ceiling.
Insert the connecting wire into the indoor unit.
Connect the wires with the indoor PCB.
Connect the other terminal with the receiver, for details please refer to the
indoor unit wiring diagram.
Adjust the spring of the receiver and install the receiver into the hole that
is made. After installation, the appearance is shown in the figure below.
Avoid installing it close to the fluorescent lamp.
The figures in this manual are based on the external view of a standard model.
Consequently, the shape may differ for the air conditioner you have selected.
Operation
5
Max. permission distance up to 8m.
Indoor Unit
IR Receiver
Wireless Remote Controller
Virtual Line between
Transmitter and Receiver
Sending commands from controller
The operation commands are sent by pressing the required operation
switch by aiming the transmitter of the remote controller at the receiver of
the indoor unit.
When the commands are sent correctly, the buzzer on the wireless receiver
goes off once. If the buzzer does not go off although the commands are sent,
the commands are not received by the indoor unit. In such a case, send the
commands again. Sometimes the buzzer may not be heard in case of the noise.
In some special cases, the indoor unit does not respond to the commands of
the wireless remote controller. The buzzer beeps 3 times.
Connecting wire
15
Installation completed.
4 Filter cleaning (Yellow)

2.TROUBLESHOOTING
2. Troubleshooting
2.1 Trouble guide
Troubleshooting for normal malfunction
Troubleshooting Possible Reason of Abnormality How to Deal With
Air conditioner can not start up
1. Power supply failure;
2. Trip of breaker or blow of fuse；
3. Power voltage is too low;
4. Improper setting of remote
controller ;
5. Remote controller is short of
power.
1. Check power supply circuit;
2. Measure insulation resistance to
ground to see if there is any
leakage;
3. Check if there is a defective
contact or leak current in the
power supply circuit;
4. Check and set remote
controller again;
5. Change batteries.
The compressor starts or
stops frequently
The air inlet and outlet has been
blocked. Remove obstacles.
Poor cooling/heating
1.
2.
3.
The outdoor heat exchanger is
dirty, such as condenser;
There are heating devices indoors；
The air tightness is not enough.
People come in and out too
frequently;
4. Block of outdoor heat exchanger;
5. Improper setting of temperature.
1. Clean the heat exchanger of the
outdoor unit, such as condenser;
2. Remove heating devices;
3. Keep certain air tightness indoors;
4. Remove block obstacles;
5. Check and try to set temperature
again.
Sound from deforming parts
During system starting or stopping, a
sound might be heard. However, this
is due to thermal deformation of
plastic parts.
It is not abnormal, and the sound will
disappear soon.
Water leakage
1. Drainage pipe is blocked or broken;
2. Wrap of refrigerant pipe joint is not
closed completely.
1. Change the drainage pipe;
2. Re-wrap and make it tight.
Troubleshooting according to fault codes
When the air conditioner failure occurs, the fault code will display on control board, wired controller or
display panel.
How to check fault codes
Indoor Unit
(1) Fault codes indicated by wired controller
Fault code
Error indicator
FIG.1 Fault code displays on wired controller
16

(2) Fault codes indicated by LED lamps on display panel
Lamp RUN (LED2, Red) and Lamp DEFROST (LED5, Green) flash. Lamp RUN display fault code
is represented by 2- digit number, and lamp DEFROST display fault code is represented by single
digit number (as shown fig. below). For example,fault code 36: LED RUN & defrost flash 3 times
at the same time, and LED DEFROST continue flashing 3 times, reports No. 36 fault.
Display panel
1 2
2.TROUBLESHOOTING
1
2
Run indicator (Red)
Indicates the fault code represented by 2-digit number.
Defrost indicator (Green)
Indicates the fault code represented by single digit number.
D E F R O S T
F I L T E R TIME
RUN EMERGENCY
21
2 1
LED FALSH CONTROL flash 300mS (T1) off 300mS(T2), after 2000mS (T3) fault code repeat displays. (as shown below)
T1 T2 T3
FIG.2 LED flash control
17

2.TROUBLESHOOTING
Outdoor unit
3.0/3.5HP
DC-Inverter unitary (Main control board upside-down)
Fault code displayed by LED lamps on outdoor main control board.
There are 3 LED lamps on control board, LED1, LED2 and LED3.
LED1 indicates fault code represented by 2-digit number, LED2 indicates fault code represented
by single digit number and LED3 indicates outdoor drive control fault.
When LED3 is off, LED1 and LED 2 indicate main control fault code.
When LED3 is on, LED1 and LED 2 indicate drive control fault code.
When LED3 is flickering and LED1, LED 2 are all off, indicate compressor is preheating. Failures
display with 5s interval. It means LED will be off for 5s to report next fault code.
System protection codes display method is the same with main control fault code.
LED lamps will be off when there is no failure, protection or preheating.
For example, outdoor main control fault 32:
For example, outdoor drive fault 32:
18