HDU-18HF03
DUCT TYPE AIR CONDITIONER
Indoor Unit Operation & Installation
Manual
HDU-18CF03
HDU-18HF03
HDU-28CF03
HDU-28CF03
No. 0010576844
Please read this operation manual before using the air conditioner.
Please keep this manual carefully and safely.
Table of Contents
Cautions
Safety Precautions
Parts and Functions
Operation
Malfunction
Care and Maintenance
For Preparation of Heating
Is The Unit Installed Correctly
Installation Manual For Wire Controller
Installation Manual For Indoor Unit
2
3-5
6-8
9-14
15-17
18
19
20
21-22
23-32
1
Cautions
Disposal of the old air conditioner
Before disposing an old air conditioner that
goes out of use, please make sure it's
inoperative and safe. Unplug the air
conditioner in order to avoid the risk of
child entrapment.
It must be noticed that air conditioner
system contains refrigerants, which require
specialized waste disposal. The valuable
materials contained in a air conditioner can
be recycled. Contact your local waste
disposal center for proper disposal of an
old air conditioner and contact your local
authority or your dealer if you have any
question. Please ensure that the pipework
of your air conditioner does not get
damaged prior to being picked up by the
relevant waste disposal center, and
contribute to environmental awareness by
insisting on an appropriate, anti-pollution
method of disposal.
Disposal of the packaging of your new
air conditioner
All the packaging materials employed in
the package of your new air conditioner
may be disposed without any danger to the
environment.
The cardboard box may be broken or cut
into smaller pieces and given to a waste
paper disposal service. The wrapping bag
made of polyethylene and the polyethylene
foam pads contain no fluorochloric
hydrocarbon.
All these valuable materials may be taken to
a waste collecting center and used again
after adequate recycling.
Consult your local authorities for the name
and address of the waste materials collecting
centers and waste paper disposal services
nearest to your house.
Safety Instructions and Warnings
Before starting the air conditioner, read the
information given in the User's Guide
carefully. The User's Guide contains very
important observations relating to the
assembly, operation and maintenance of the
air conditioner.
The manufacturer does not accept
responsibility for any damages that may arise
due to non-observation of the following
instruction.
Damaged air conditioners are not to be put
into operation. In case of doubt, consult your
supplier.
Use of the air conditioner is to be carried
out in strict compliance with the relative
instructions set forth in the User's Guide.
Installation shall be done by professional
people, don't install unit by yourself.
For the purpose of safety, the air conditioner
must be properly grounded in accordance
with specifications.
Always remember to unplug the air
conditioner before opening inlet grill. Never
unplug your air conditioner by pulling on the
power cord. Always grip plug firmly and pull
straight out from the outlet.
All electrical repairs must be carried out
by qualified electricians. Inadequate repairs
may result in a major source of danger for
the user of the air conditoiner.
Do not damage any parts of the air
conditioner that carry refrigerant by piercing
or perforating the air conditioner's tubes with
sharp or pointed items, crushing or twisting
any tubes, or scraping the coatings off the
surfaces. If the refrigerant spurts out and gets
into eyes, it may result in serious eye injuries.
Do not obstruct or cover the ventilation
grille of the air conditioner. Do not put fingers
or any other things into the inlet/outlet and
swing louver.
Do not allow children to play with the air
conditioner. In no case should children be
allowed to sit on the outdoor unit.
2
Safety Precautions
Before starting to use the system, read carefully this"SAFETY PRECAUTIONS" to ensure a proper operation of the system.
Safety precautions described here are classified to " WARNING" and " CAUTION". Precautions which are shown in the column of
" WANING" means that an improper handing could lead to a grave result like a death, serious injury, etc. However, even if precautions
are shown in the column of " CAUTION", a very serious problem could occur depending on situation. Make sure to observe these safety
precautions faithfully because they are very important information to ensure the safety.
Symbols which appear frequently in the text have following meanings.
Strictly prohibited.
Observe instructions faithfully.
Provide a positive grounding.
When you have read through the manual, keep it always at hand for read consultation. If the operator is replaced, make sure to hand over
this manual to the new operator.
CAUTIONS FOR INSTALLATION
WARNING
The system should be applied to places as
office, restaurant, residence and the like.
Application to inferior environment such as an engineering shop, could cause equipment malfunction and
serious injury or death.
Do not install nearby the place where may
have leakage of flammable gas.
If the gas leakes and gathers around, it may cause the
fire.
Where strong winds may prevail, the
system should be fixed securely to prevent
a collapse.
The system should be installed by your
dealer or a professional installer.
Installation by yourself is not encouraged because
it could cause such problems as water leakage,
electrical shock or fire accident by some improper
handing.
CAUTION
Depending on the place of installation, a
circuit breaker may be necessary.
ON
OFF
Unless the circuit breaker is installed, it could
cause elecrical shocks.
Install on the place where can endure
the weight of air conditioner.
When you need some optional devices such as a humidifier, electric heater, etc., be sure to use the products
which are recommended by us. These devices should
be attached by a professional installer.
Installation by yourself is not encouraged because it
could cause such problems as water leakage, electrical
shock or fire accident by some improper handing.
Drain pipe should be arranged to provide a
positive draining.
If the pipe is arranged improperly, furniture or the
likes may be damaged by leaked water.
Make sure the system is grounded.
Bodily injury could result by a collapse.
CAUTIONS FOR OPERATION
You should refrain from exposing your body
directly to cool wind for a long time.
It could affect your physical condition or cause some
health problems.
The system should never be used for any
other purposes than intended such as for
preservation of food, flora and fauna, precision deices or work of art.
It could cause deterioration of food or other problems.
Bodily injury could result by a careless installation.
WARNING
Do not poke the air inlet or outlet with a
bar, etc.
Since the internal fan is operating with a high
speed, it could cause an injury.
CAUTION
Do not handle switches with a wet hand.
It could cause electric shocks.
3
Grounding cable should never be connected to a gas
pipe, city water pipe, lightning conductor rod or
grounding cable of telephone. If the grounding cable
is not set properly, it could cause electric shocks.
When any abnormal condition (scorching smell or others) is found, stop the operation immediately and turn
off the power switch. Then consult your dealer.
If you continue the operation without removing the
cause, it could result in a trouble, electric shock or fire.
Combustion apparatus should not be placed
allowing a direct exposure to wind of air conditioner.
Incomplete combustion could occur on the apparatus.
Safety Precautions
Do not wash the air conditioner with water.
CAUTION
Do not install the system where the air outlet
reaches directly the flora and fauna.
Make sure to use a fuse of proper electric
rating.
It could cause electric shocks.
Neither stand on the air conditioner nor
place something on it.
There are risks of falling or injury by collapsed object.
Do not use the power switch to turn on or
off the system.
ON
OFF
It could cause a fire or water leakage. There is a risk of injury.
When operating the system simultaneously with a combustion
apparatus, indoor air must be ventilated frequently.
Insufficient ventilation could cause an oxygen deficiency accident. If the structure is not repaired immediately, the unit could topple down to cause
When cleaning the system, stop the operation and turn off the
power switch.
It will not be good for their health.
It is strictly prohibited to place a container of
combustible gas or liquid near the air conditioner or to spray it directly with the gas or liquid.
It could cause a fire accident.
Do not touch the air outlet section while
the swing louver is operating.
Check occasionally the support structure of the unit for any damage
after a use of long period of time.
a personal injury.
Do not put water containers on the unit such as a flower vase, etc.
Use of steel or copper wire in place of a fuse is strictly
prohibited because it could result in a trouble or fire
accident.
Do not operate the system while the
air outlet grill is removed.
There is a risk of injury.
Do not use such equipment as a water
heater, etc. around the indoor unit or the
wire controller.
If the system is operated at the vicinity of such equipment which generates steam, condensed water may
drip during cooling operation or it could cause a fault
current or short-circuit.
Cleaning should never be done while the internal fans are running with high
speed.
If the structure is not repaired immediately, the unit could topple down to cause
apersonal injury.
CAUTIONS FOR TRANSFER OR REPAIR
WARNING
Modification of the system is strictly prohibited. When the system
needs a repair, consult your dealer.
Improper practice of repair could cause water leakage, electric shock or fire. Improper practice of installation could cause water leakage, electric shock or fire.
When the air conditioner is relocated, contact your dealer or a professional installer.
4
Safety Precautions
The machine is adaptive in following situation
1. Applicable ambient temperature range:
Rated Maximum Minimum
Indoor
Cooling
outdoor
WB C
DB C
WB C
DB C
Heating
Indoor
outdoor
DB C
WB C
DB C
WB C
2. If the supply cord is damaged, it must be replaced by the manufacturer or its service agent
or a similar qualified person.
3. If the fuse on PC board is broken please change it with the type of T 3.15A /250V.
4. The wiring method should be in line with the local wiring standard.
27 32 18
19 23 14
35 43 10
24 26 6
20 27 15
14.5 -- - 7 24 -7
6 18 --
5. The power cable and connecting cable are self-provided. The power cable should be
H07RN-F 3G 2.5mm
HDU-28CF03,HDU-28HF03).The connecting cable should be H05RN-F 0.75mm2x2+2.0mm2x3
(For HDU-18HF03), H05RN-F 2.0mm2x3 ( For HDU-18CF03), and
(For HDU-28HF03); H05RN-F 0.75mm2x4 ( For HDU-28CF03). During installation, when the
connecting cables break off, it must be assured that the grouding wire is the last one to be broken off.
6. The breaker of the air conditioner should be all-pole switch; and the distance between its
two contacts should be no less 3mm.
7. The indoor unit installation height is at least 2.5m.
2
( For HDU-18CF03, HDU-18HF03), H07RN-F 3G 4.0mm
H05RN-F : 0.75mm2x6
2
( For
5
Parts and Functions
Indoor unit
Outlet
Evaporator
Wire controller
Electrical box
Drain pan
HEALTH
HEAT
6
Parts and Functions
Operation
CLOCK
Used to set correct time.
TIMER
Used to select
TIMER ON,
TIMER OFF,
TIMER ON/OFF .
TIME
Used to set clock and
timer setting.
HEAT
Buttons and display of the wire controller .
Used to select AUTO
RUN, COOL, DRY,
HEAT and FAN
operation.
FAN SPEED
Used to select fan
speed: LO, MID, HI,
AUTO
HEALTH
HEAT
Used for setting indoor
health function
Used to select your
desired temp.
Used to confirm Timer
and Clock settings.
MODE
HEALTH
TEMP
SET
Used to start/stop auxiliary electric
heater when in heating operation
Power ON/OFF
Used for unit start and
stop.
Cautions:
On cooling only unit, heating
mode is not available;For this
unit the "HEALTH" function is
not available.
SLEEP
Used to select sleep
mode.
Note:
The above information is the explanation of
the displayed information therefore varies
with those displayed in actual operation.
7
Parts and Functions
Operation
SLEEP
AUTO
DRY
FAN SPEED
Buttons and display of the wire controller.
Remote control
COOL
HEAT
HEALTH
HEALTH
HEAT
ELECTRIC HEATER
TIMER ON
TIMER OFF
CLOCK
Clock set
When unit is started for the first time, clock should be adjusted as follows:
Press CLOCK button, "AM"or "PM" flashes.
8
OPERATING LAMP
F AN OPERATION
TEMP.
Operation
The air conditioner has the function of POWER
FAILURE RESUME.
HEALTH
HEAT
Fan operation
Enjoy yourself by just a gentle press.
(1) Unit start
Press ON/OFF button, unit starts.
Previous operation status appears on display.
(Not Timer setting)
Power indicator lights up.
(2) Select operation mode
Press MODE button. For each press, operation
mode changes as follows:
AUTO COOL DRY F AN
HEAT
Hints
Wire controller can memorize settings in each operation mode. To run it next time just select
the operation mode and it will start with the previous setting.
No reselecting is needed.(TIMER ON/OFF needs reselecting)
In FAN mode, temp. can't be set.
(3) Fan
Press FAN button. For each press, fan speed
changes as follows:
LOW
Unit will run at selected fan speed.
MID HIGH
(4) Unit stop
Press ON/OFF button.
Only time and room temp remains on LCD.
All indicators go out.
Vertical flap closed automatically.
9
Operation
AUTO RUN, COOL,HEAT and DRY operation
Recommendations
Use COOL in summer.
Use HEAT in winter.
Use DRY in spring,autumn and in damp climate.
(1) Unit start
Press ON/OFF button, unit starts.
Previous operation status appears on display
(Not Timer setting). Power indicator lights up.
(2) Select operation mode
Press MODE button. For each press, operation mode
changes as follows:
HEALTH
HEAT
(4) Fan speed selection
Press FAN button. For each press, fan speed changes
as follows:
LOW
MID HIGH
AUTO
AUTO
AUTO COOL DRY FANHEAT
Unit will run in operation mode displayed on LCD.
Stop display at your desired mode.
(3) Select temp. setting
Press TEMP button
Unit will start running to reach the temp. setting
on LCD.
(5) Unit stop
Press ON/OFF button.
Only time and room temp remains on LCD.
All indicators go out.
Vertical flap closes automatically.
Hints
Wire controller can memorize each operation
status. When starting it next time, just press
ON/OFF button and unit will run in previous
status.
10
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