INVENTOR R2FO-50 User manual

• USER’S MANUAL
• ΕΓΧΕΙΡΙΔΙΟ ΧΡΗΣΗΣ
• MANUAL DE UTILIZARE
ENGLISH | ΕΛΛΗΝΙΚΑ
AIR CONDITIONING SYSTEMS
MODELS:
R2FI-50/R2FO-50
FLOOR STANDING

Contents
Notices for Use .................................................................4
Names of Each Part of the Unit ............................................6
Operation of Remote Controller...........................................12
Use and Maintenance
Clean and Care ...............................................................20
Troubleshooting ...............................................................22
Installation Dimension Diagram ...........................................28
Installation of Indoor Unit ....................................................30
Installation of Outdoor Unit .................................................34
Test Operation and Check after Installation............................36
Installation Service
Cautions for Operation ........................................................1
Notes for Installation .........................................................25
Adjustment of Swing .........................................................17
Instruction to Special Functions ...........................................19
The symbol stands for the items
which should be forbidden
The pictures about the unit in this Instruction may be different from the actual
ones.Please be subject to the actual one.
The symbol stands for the items
which should be followed
Name and Function of Each Button of Air Conditioner................8
Do not dispose this product as unsorted municipal waste.
Collection of such waste separately for special treatment
is necessary.
This appliance is not intended for use by persons (including children) with
reduced physical, sensory or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision or instruction concerning
use of the appliance by a person responsible for their safety. Children should
be supervised to ensure that they do not play with the appliance.

★
★
★
Please read the following carefully before operating.
WARNING
Once abnormality like burning
smell occurs,please cut off the power
supplyimmediatelyandthencontact
maybe damagedand electricshock
with service center .
If the abnormality still exists, the unit
or fire may result.
Don't operate the air conditioner
with wet hand. Never cut off or damage power
cord and signal wire. If they are
damaged,replace them with special
cord by professionals.
Special circuit must be adopted
for power supply to prevent fire. Be sure to pull out the power
plug when the air conditioner is not
in use for a long time.
Otherwise, the accumulated dust
may cause overheating or fire.
Never damage the electric wire
or use the one which is not specified.
Otherwise,itmaycauseoverheating
or fire.
During cleaning, please cut off
the power supply.
Cut off power supply
Otherwise, it may cause electric
shock or damage.
The power supply must adopt
special circuit with protection of air
switch and enough capacity.Do not
turn on or off the unit frequently to
Cautions for Operation
protecttheairconditioner.
Thepowersupplyand voltage
shouldkeepstable.Electriccompon-
Do not use octopus multipurpose
plug or mobile terminal board for
wire connection.
entsareeasytobedamagedforhigh
voltage.Refrigerationsystemwillbe
damaged and compressor and electric
componentswon'toperateifvoltage
is too low.
1
Otherwise, it may cause electric shock.

2
Don't make windows and doors open
riaehtfonoitarepognirudemitgnolarof
conditioner.
Keep pressurized spray,gas holder
and so on away from the indoor unit
It may cause fire or explosion.
Don't step on the top of the outdoor
unit or place anything on it.
There is the danger of fall of things or
Please note whether the installation
stand is firm enough or not.
If damaged, it may cause fall of the unit
and injury of people.
Don't attempt to repair the air condi-
tioner by yourself.
Improper repair may cause electric shock
or fire, so you should contact the service
center to repair.
Never insert any foreign matter into
the air conditioner to avoid damage of
the air conditioner. And never insert
your hands into the air outlets of indoor
and outdoor units.
The operation of cut-off valve of
outdoor unit must be performed by
professional personnel in order to
Never block the air inlet and outlet
of the indoor and outdoor units.
★
★
★
★
★
★★
★
avoid damage to compressor for
leakage of the system.
Earthing:the unit must be
earthed reliably! The earthing
wire should connect with special device
of buildings.
professional does not recognize.
It may reduce efficiency of the unit. It may reduce efficiency or cause stop of
the unit and even fire.
above 1m .
people .
If not, please ask the qualified personnel
to install. Furthermore, don't connect each
wire to gas pipe, water pipe, drainage
pipe or any other improper places which
Cautions for Operation

Keepproper temp
differencebetween
roomandoutdoors
★
★
★
★
★
Don'tinsertyourhandsorstickintotheairinletoroutlet. Selectthemostappropriatetemperature.
Splashingwaterontheairconditionermaycauseelectric
shockandmalfunction.
Don'tapplythecoldwindtothebodyforalongtimeor
Don'tusetheairconditionerforotherpurposes,suchas
dryingclothes,preservingfoods,etc.
Don'tplaceaspaceheaterneartheairconditioner.
OrCOtoxicosismayoccurforimcompleteburning.
Don'tblowthewindtoanimalsandplantsdirectly.
Itmaycauseabadinfluencetothem.
Don't striketheglassdoorwithheavythingstoavoiddamage.
settoolowtemperature.
Cautions for Operation
3

Working Principle and Special Functions for Cooling
Principle:
Anti-freezing Function:
If the unit is running under cooling mode at low temperature, the surface of indoor heat
below, the indoor microcomputer will make the compressor stop to protect the unit.
will decrease with the increase of outdoor temperature.
so that indoor ambient temperature will be decreased.By this principle, its cooling capacity
℃
exchangerwill frost.Whenthetemperature of indoorheat exchangerdecreasesto-2 or
Air conditioner absorbs heat from room and then transmit it outdoors for discharge of it,
Working Principle and Special Functions for Heating
*
*
*
*
*
Principle:
Defrosting:
defrosting function will act and heat running will briefly stop for 5-10min.
so that indoor temperature will be increased.
Ifoutdoortemperaturegetsmuchlower,pleaseoperatewithotherheatingequipments.
Note:Bythisprinciple,heating capacity of theunitwilldecreasewiththedecrease of outdoor
Air conditioner absorbs heat from outdoors and transmit into the room for distribution,
temperature.
When outdoor temperature is low with high humidity, the outdoor heat exchanger will
frost after the unit runs for a period of time, which affects heating. At this time, auto
malfunction.
During defrosting, the outdoor unit may emit vapor,which is due to rapid defrosting, not
During auto defrosting, both indoor and outdoor fans stop running.
The unit will resume heating after defrosting.
Notices for Use
Under heating mode, if indoor heat exchanger hasn't reached certain temperature under
the following three kinds of states, the indoor fan won't start to avoid blow of cold air (within
90s).
1. At the beginning of heating 2. After auto defrosting 3. Heat at ultra-low temperature
Anti-cold Air Function:
4

★
℃
"HEAT"
running
Outdoor temp above 24
"COOL"
running "DRY"
running
Outdoor temp below -7 ℃
Room temp above 27℃
Outdoor temp
below 18
Outdoor temp
above 48
℃
℃
Outdoor temp
below 21℃
Condition that unit can't normally run
Under relative humidity above 80% (door and windows open), long-time cooling or
dehumidifying, there will be dew dripping off near the air outlet.
Notices for Use
About display of ambient temperature:
1.In order to prolong lifetime of compressor, the air conditioner will automatically control start
or stop of compressor according to actual condition. It will delay for a period of time to stop
although the ambient temperature reaches setting temperature.
2.Becauseofdifferenceamongdifferentregionsintheroom,theairconditionerwillautomatically
supplement temperature to improve comfort. It is normal state that the temperature displayed
on the unit is different from that detected by the user.
5
The protection devices may be active or inactive in certain temp range of the following table.

⑹
Indoor unit
Air out
Air in
Outdoor unit
(1) Air outlet
(2) Display screen
and button
(3) Front panel
(4) Connecting pipe
(5) Drainage pipe
(6) Wrapping tape
Names of Each Part of the Unit
⑵
⑴
⑶
⑸
(4)
Air out
Air in
Display screen
.
6

⑹
Indoor unit
Air out
Air in
(1) Air outlet
(2) Display screen
and button
(3) Front panel
(4) Connecting pipe
(5) Drainage pipe
(6) Wrapping tape
Names of Each Part of the Unit
⑵
⑴
⑶
Display screen
(4)
⑸
Outdoor unit
Air in
Air out
7
.

8
Function Button and Display of Air Conditioner
ON/OFF
●
ON/OFF Button
Press this button to turn on/off the unit.
When turning on/off the unit, the timer
and sleep function which have been set
before will be cleared.
Note: during DRY operation, press
ON/OFF button to turn on the unit directly.
●
Name and Function of Each Button of Air Conditioner
MODE
AUTO COOL
HEAT
DRY
FAN
●
●
●
●
Function Button
FUNCTION
Function Button of Air Conditioner
When the unit operates, it is green;
when the unit is energized but doesn’t
operate, it is red.
Mode Button
Press this button and the mode will
change as follows:
AUTO: in this mode, the operation mode
is automatically determined by controller
based on change of room temperature.
COOL: cooling status is displayed.
DRY: the humidity is decreased but room
temperature doesn’t change.
FAN: in this mode, compressor doesn’t
operate and only indoor fan operates.
HEAT: heating status is displayed.
(Note: there is no HEAT mode for cooling
-only unit).
When the unit is operating, press
function button to set function as per
the sequence of vertical SWING,
horizontal SWING, X-FAN, E-Heater,
TIMER, SLEEP, SET TEMP,
ROOM TEMP.Afunction which blinks
can be set. Use button “▲”or “▼” for
setting. If there is no change within 5
seconds after setting, the setting will
be confirmed. Or press function button
again to confirm this function.
When the unit is in X-FAN status,
press function button to turn off the
unit directly. If the unit has been turned
off and not in X-Fan status, press
function button to set TIMER ON.
SPEED SPEED Button
Press this button, fan speed can be
circularly changed as the sequence
of AUTO-LOW-MED-HIGH-AUTO.

●
●
●
●
空调器功能键空调器功能键
Function Button and Display of Air Conditioner
Function Button of Air Conditioner
Name and Function of Each Button of Air Conditioner
▲ and ▼
Buttons ▲ and ▼
When function is not set, each press of
▲ or ▼ will make set temperature
increase or decrease for 1 ℃and the
adjustment range is 16℃~30℃.
The SET TEMP button is invalid in AUTO
mode.
(Set ▲ and ▼ to circularly chose this
function. When setting function, the
direction can be reversed. )
Press buttons ▲ and ▼ for continuous
3 seconds, all buttons on display panel
will be shielded. If pressing any button
after that, the buzzer will sound and nixie
tube will display LC which will blink for
3 times and then resume normal display
so as to remind user of that buttons have
been locked. When pressing these two
buttons again, the shielding function will
be released and normal display will be
resumed.
▲ and ▼ Buttons ▲ and ▼ (continued )
When the unit is energized for the first
time, if no button pressed:
①press ▲ for continuous twice within
20 seconds, the unit will enter force
heating operation immediately. In that
case, vertical louver will turn to the
minimum angle, all loads will be turned
on, and indoor and outdoor fan will
operate at high speed. If there is no
malfunction of temp sensor, all icons
will be displayed. If malfunction of temp
sensor exists, nixie tube will display
malfunction code and buzzer will sound.
The unit will stop operation in 5 minutes
later or it receives turning off signal
within 5 minutes, then stops operation
and enters normal standby status.
②press ▼ for continuous twice within
20 seconds, the unit will enter force
cooling operation immediately. In that
case, vertical louver will turn to the
minimum angle, all loads except 4-way
valve will be turned on, and indoor and
outdoor fan will operate at high speed.
If there is no malfunction of temp sensor,
all icons will be displayed. If malfunction
of temp sensor exists, nixie tube will
display malfunction code and buzzer
will sound. The unit will stop operation
in 5 minutes later or it receives turning
off signal within 5 minutes, then stops
operation and enters normal standby
status.
①and ②are for testing only.
9

10
AUTO
●
●In this mode, compressor doesn’t operate
and only indoor fan operates.
●In this mode, the operation mode will
be determined by controller based on
change of room temperature.
Auto Display
Fan Display
●
●
●
●
●
●
●
●
●
空调器功能键空调器功能键
Function Button and Display of Air Conditioner
Function Button of Air Conditioner
Name and Function of Each Button of Air Conditioner
Room Temperature
Operation Display
When the unit is energized, the display
will be on.
Setting
Set temperature is displayed.
When “Turbo” is bright, turbo function
is set.
Turbo
Room temperature is displayed.
TIMER Timer Display
Set timer to turn on or turn off the unit.
Timer can only be set by remote control.
FAN
Room Temperature Display/Set
Temperature Display/ Timer Display
Set temperature can be set by function
button or remote control.
Timer can be set by remote control.
Where there is malfunction, only
malfunction code will be displayed.
During normal operation, if temperature
or timer is set by button or remote
signal, the corresponding setting will
be displayed for 5 seconds and then
set temperature will be displayed (set
temperature or room temperature).
During defrosting operation, H1 will be
displayed as default. If set temperature,
timer, temperature display are set by
button or remote control, the display
will follow the following sequence: set
temperature, timer, temperature display.
During defrosting operation(H1), each
status will be displayed for 5 seconds
and then next status will be entered. If
the status (set temperature, timer,
temperature display or defrosting)
doesn’t change, it will not be displayed
and the default or set temperature will
be displayed finally. The room
temperature will be displayed as default
after energization.

11
●Sleep status is displayed and this
function can only be set by remote
control.
Sleep Display
●
Vertical Swing Display
●
Horizontal Swing Display
●Reduce humidity and keep room
temperature unchanged.
DRY Display
Speed Display
●The speed can be set by button or remote
control: AUTO, LOW, MED, HIGH, or
TURBO will be displayed accordingly.
E-HEATER Display
●
X-FAN Display
●
●
●
Cooling Operation Display
●The cooling status is displayed.
Heating Operation Display
●Heating status is displayed.
When this word is displayed, the function
of E-HEATER is turned on.
When this word is displayed, the function
of X-FAN is turned on.
空调器功能键空调器功能键
Function Button and Display of Air Conditioner
Function Button of Air Conditioner
Name and Function of Each Button of Air Conditioner
COOL
HEAT
SPEED
E-HEATER
X-FAN
SWING
The swing status of horizontal louver is
displayed.
Only two statuses: it is on that means
operation while off means stop of
operation.
The swing status of vertical louver is displayed.
Only two statuses: it is on that means
operation while off means stop of operation.
DRY
SLEEP
SWING

12
FAN
AUTO
OPER
HEALTH
AIR
FILTER
TURBO
ON/OFF
X-FAN
HOUR
HUMIDITY
ON/OFF
MODE
FAN
X-FAN
TURBO
TEMP TIMER
SLEEP LIGHT
2
11
7
10
13
9
43
12
8
6
14
5
1
Press it to start or stop
ON/OFF operation.
MODE
+
-
Press it to select operation mode
(AUTO/COOL/DRY/FAN/HEAT).
:Press it to increase temperature
setting.
: Pressittodecreasetemperature
setting.
FA
HEALTH SAVE
N
Pressitto setup & down swingangle.
Press it to turn on/off the light.
TIMER
X-FAN ( page 15)
( page 15)
TEMP( page 15)
TURBO( page 15)
SLEEP( page 16)
LIGHT
Press it to set fan speed.
Press it to set timer ON/ timer OFF.
1
2
Press it to turn on or off health function.
7
4
3
5
6
Press it to set left & right swing angle.
8
11
9
10
12
13
14
Operation of Remote Controller

Operation of Remote Controller
LOCK icon:
MODE icon:
LIGHT icon:
If MODE button is pressed,
current operation mode icon
Pressing TEMP button,
(set temperature),
ambient temperature)
(outdoor ambient temperature)
and blank is displayed circularly.
(indoor
is displayed by pressing "+"
and “-” buttons simultaneously. Press
them again to clear the display.
is displayed when pressing the
left & right swing button.Press this
button again to clear the display.
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.
(AUTO), ( COOL),
(DRY), (FAN) or (HEAT
only for heat pump models) will show.
15
Left & right swing icon:
20
Up & down swing icon:
After pressing TIMER button,
ON or OFF will blink.This area
will show the set time.
SET TIME display:
21
This area will show the set tempe-
rature. In SAVE mode,"SE" will be
displayed. During defrosting opera-
tion, “H1” will be displayed.
DIGITAL display:
23
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.
FAN SPEED display:
24
16
17
SLEEP icon :
is displayed by pressing
the SLEEP button. Press this
button again to clear the display.
18
TEMP icon:
19
FAN
AUTO
OPER
HEALTH
AIR
FILTER
TURBO
ON/OFF
X-FAN
HOUR
HUMIDITY
19
15
20
18
16
17 21
22
23
24
13
22
19

Remote controller description
ON/OFF
Notice: This is a general use remote controller, it could be used for the air conditioners
with multifunction; For some function, which the model doesn't have, if press the corres-
ponding button on the remote controller that the unit will keep the original running status.
:
MODE :
+:
FAN:
1
2
4
3
5
Operation of Remote Controller
-14-
Press this button to turn on the unit. Press this button again to turn off the unit.
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 modelswith 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.
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.
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.
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
:
6
defaults to simple swing condition.
If the unit is turned off during swing operation,the louver will stop at present position.
changes as below:
●
●
●
●
Press button to start or stop up & down swing function.The remote controller
Press + button and button at the same time at unit OFF to switch between
simple swing and static swing; blinks for 2 seconds.
In static swing condition, pressing button, the swing angle of up & down louver

10 TEMP:
Press this button, could select displaying the indoor setting temperature or indoor ambient
temperature.When the indoor unit firstly power on it will display the setting temperature,
if the temperature's displaying status is changed from other status to" ",displays the
ambient temperature, 5s later or within 5s, it receives other remote control signal that will
return to display the setting temperature. if the users haven't set up the temperature
displaying status,that will display the setting temperature.
HEALTH SAVE:
Press HEALTH part of this button to turn on or off HEALTH function.
7
Press TIMER button at unit ON to set TIMER OFF; HOUR OFF blinks. Press TIMER
button at unit OFF to set TIMER ON; HOUR ON blinks. In this case, pressing + or -
button changes time setting. Holding down either button rapidly changes time setting
(time setting range 0.5-24hours). Press TIMER button again to confirm setting; HOUR
O
N/OFF stops blinking. If there is not any
operation of button within 5 seconds during
HOUR ON/OFF blinking, TIMER setting will be cancelled.
TIMER:
11
X-FAN:
TURBO:
9
12
15
:
8
Pressing X-FAN button in COOL or DRY mode,the icon "X-FAN" is displayed and the
indoor fan will continue operation for 10 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 and
HEAT mode.
Press this button to activate / deactivate the Turbo function which enables the unit to
reach the preset temperature in 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).
Pressing SAVE part of this button, is displayed and the unit goes into SAVE operation
mode. Press SAVE part of the button again to cancel SAVE function. During SAVE
operation, the temperature and fan speed is not adjustable.
Operation of Remote Controller
changes as below:
●
●
●
If the unit is turned off during swing operation,the louver will stop at present position.
●
Press button to start or stop left & right swing function.The remote controller
defaults to simple swing condition.
Press + button and button at the same time at unit OFF to switch between
simple swing and static swing; blinks for 2 seconds.
In static swing condition, pressing button, the swing angle of left & right louver

SLEEP :
LIGHT:
13
14
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) or DRY mode to maintain the most comfortable temperature for you.
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 , is displayed. If the light is tunrned off,
disappears.
16
Replacement of Batteries
properly, replace the 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.
When replacing the batteries, do not use old or different batteries,
If the wireless remote controller will not be used for a long time, please
otherwise, it may cause malfunction.
remove batteries to prevent damage from leaking batteries.
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 wireless remote controller does not operate normally, please take
the batteries out and reinsert them after 30 seconds. If it still can't operate Sketch map for
replacing batteries
Notes:
3
2
Operation of Remote Controller
Combination of "+" and "-" buttons: About lock
15
Combination of "MODE " and "-" buttons:AboutswitchbetweenFahrenheitandCentigrade.
16
Press "+" and "-" buttons simultaneously to lock or unlock the keypad. If the remote
controller is locked, is displayed. In this case, pressing any button,
blinks three times.
At unit OFF, press "MODE" and "- " buttons simultaneously to switch between℃and℉.

Up & Down Swing
Up &down swing can be selected to control start or stop
:setoN
of up & down swing motor by pressing up & down button on
remotecontrollerorFUNCbuttonondisplayer,sothatguide
louver will swing up and down or stop at a certain angle.
If indoor fan has operated,press up &down button on remote
controller. Refer to remote controller instruction for swing
mode.
Select up & down swing button on displayer to set it,and
then press button to start or stop swing. Press
▼or▲
it once to start and repress it to stop.
If stop of swing is selected,the characters and icon about
up & down swing will disappear. When other states are selected
,
characters and icon about up & down swing will show again.
Front or upward air supply should be set for cooling and
dehumidifying mode.(Fig.4)
Fig.5
Fig.4
Guide louver (downward)
or can be set
Guide louver (upward)
Guide louver (level)
At the begining of startup of the unit,downward air supply
can be selected for quick cooling around the people,but
it can not be kept for a long time in order to ensure good
circulation of air in the room .
Downward air supply should be set for heating.(Fig.5)
Adjustment of Swing
or can be set
Fig.3
17

Left&Right Swing
Left & right swing can be selected to control start or stop
of left & right swing motor by pressing left & right button on
remotecontrollerorFUNCbuttonondisplayer,sothatguide
louver will swing left and right or stop at a certain angle.
If indoor fan has operated,press left & right button on remote
controller. Refer to remote controller instruction for swing
mode.
Select left & right swing button on displayer to set it,and
then .gniwspotsrotratsotnottubsserp Press
it once to start and repress it to stop.
▼or ▲
If stop of swing is selected,the characters and icon about
up&downswingwilldisappear.Whenotherstatesareselected ,
characters and icon about up & down swing will show again.
Fig.6
Left & right swing button
Up &down swing button
Adjustment of Swing
18