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TITAN
LG Air conditioning Academy
Air Conditioning Academy
Contents
1. Introduction1.1 What is TITAN ?
1.2 Product Shape
1.3 Product background / Comparison
1.4 Main Usage / System layout
1.5 STP / Market Analysis
1.6 Nomenclature
2. Line Up2.1 Line Up
2.2 Specification
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Copyright 2010 @LG Electronics / AC Company All Rights ReservedTITAN 2
3. USP3.1 USP
4. General Information4.1 Item Inside Product Box
4.2 Accessories Information
5. Product Details5.1 Cycle Diagram
5.2 Part & Dimensions
5.3 Control Parts
5.4 Wiring Diagram : Indoor Unit
5.5 wiring Diagram : Outdoor unit
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6. Installation6.1 Installation Scene
6.2 Installation of Outdoor Unit
6.3 Installation of Indoor Unit
6.4 Piping & Wiring of Outdoor Unit
6.5 Piping & Wiring of Indoor Unit
6.6 Accessories Installation
6.7 System Set-Up
7. Start up7.1 Start up
7.2 Checking point
7.3 Operation
7.4 Special Functions
Contents
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Copyright 2010 @LG Electronics / AC Company All Rights ReservedTITAN 3
7.4 Special Functions
8. Control logic8.1 Basic Features
8.2 Compressor control
8.3 Healthy Humidification
8.4 Hot Start
8.5 EEV Control
8.6 Defrost Control
8.7 4-Way Valve
8.8 Other Operations
8.9 PBC Details
9. Troubleshooting9.1 Error code
9.2 Trouble shooting
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1.1 What is Titan ? 1. Introduction
It is Wall Mounted Type of Air Conditioner with low Noise and exceptional Performance &
Healthy Living
Copyright 2010 @LG Electronics / AC Company All Rights ReservedTITAN 4
1.2 External Appearance
Indoor
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1.2 External Appearance
Indoor
Titan-Premium Titan-Standard Air Cruiser
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1.2 External Appearance 1. Introduction
Outdoor
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UMUE
LS-C246C*U1
LS-H246C*U1LS-H186C*U1
1.3 Product Background 1. Introduction
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1.4 System Layout 1. Introduction
LG TITAN
More Quick Cooling !!
More Even Cooling !!
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1.5 Customer Insight / MOT 1. Introduction
No1 Basic Attribute. Regional Suitable Luxury Design and Smart Technology
Brand Follower
Comfort Seeker
Premium
Seeker
(10.4%)
Customer Insight
Powerful Performance
““““Most strong needs is
powerful cooling, but
hard to differentiate.””””
• Surround Cooling- IAQ Unit
(IAQ:Indoor Air Quality)
• 10m Air Flow- Aerodynamic Tech.
• Dynamic Double Big Vane- Optimized Air Flow System
Healthy Living • Allergy Care Plasma
Key Technology
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Strict Shopper
Braggart
Rational
Shopper
(47%)
++++
Convenience
• Smart Clean Indicator• Ez-Remote Controller• Magic Display• Easy Installation Design
Healthy Living
Asthma & Allergy Pain
• Allergy Care Plasma- Cyclotron Plasma Filter
& Allergy Filter
• Sterilized HumidificationModule• Selectable Swing Mode- Direct/Indirect Air Flow
1.6 Nomenclature 1. Introduction
L S – C 24 6 C 9 U 1
C : SCChassis Name
Look/Color
Development Seq.
FunctionU : Plasma + Allergy
Circulator Model Name : LSCA04GAVB0
9 : Normal Type
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L : Changwon R - 22Ref/Production Site
- : Set N : Indoor U : Outdoor C : Satellite Unit Unit
C : Cooling Only H : Heat Pump Model Type
Ex : 24 : 24,000 Btu/hr 18 : 18,000 Btu/hr 04: Air Flow (CMM) Cooling Capacity
2 : 220V/60Hz/1Φ 6 : 220~240/50Hz/1Φ
G : 220~240/50,60/1Φ
Electric Standard
-.Volt
-.Hertz
-.Phase
S : Single Split Wall Mounted Type Of Aircon
2.1 Line-up 2. Line-up
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2.2 Specification 2. Line-up
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Note: Refer PDB for more details of all the models.
3.1 USP
3.1.1 Virus & Allergy Safe filter
3. USP
LG electronics has newly developed the Virus & Allergy Safe Filter, certified by BAF (British Allergy
Foundation). The new filter can eliminate the house dust mite allergens, and viruses including H1N1
and help you breathe easier, and feel healthier.
Copyright 2010 @LG Electronics / AC Company All Rights ReservedTITAN 14
Recognized by Allergy UK, LG’s leading technology will keep your home healthy and comfortable..Allergy Care is certified by Allergy UK for your better living environment.
3.1 USP 3. USP
The Titan fan assembly is designed for the low noise operation. In this new configuration, the vanes can create very quiet and comfort air-flow.
3.1.2 Quiet Operation
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3.1 USP 3. USP
Skew Fan
With Skew Fan, it improves air flow and reduces noise
3.1.2 Quiet Operation
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3.1.3 10M Power Flow
3.1 USP 3. USP
10M Power Flow
LG TITAN air conditioner blows air to 10 meters distance. No matter how large your room is, TITAN willmeet your satisfaction.
Copyright 2010 @LG Electronics / AC Company All Rights ReservedTITAN 17
3.1 USP 3. USP
TITAN is highly reliable, even under extreme conditions (15~60'c), sandstorms and 24 hr operation.
3.1.4 Reliable Tropical Operation
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Operation Guarantee under 187V ~ 253V
Operation Guarantee under Rated voltage(220V/60Hz, 230V/50Hz)
* 54º operation is basic performance of All LG air conditioner ,
but MarComm. will be prepared in 2010
3.1.5 Twin Rotary
3.1 USP 3. USP
TITAN employs a Twin Rotary Compressor, which is a highly effective solution for reducing
noise and vibration while increasing operation efficiency.
Twin Rotary Compressor
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3.1.6 14 FPI
3.1 USP 3. USP
TITAN has a 14 FPI (low density 14 fins per inch) outdoor unit that protects the air conditioning
unit from dust particles even in the desert areas.
14 FPI – 50Hz Only
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3.1.7 Surround Cooling
3.1 USP 3. USP
The TITAN main unit itself does an excellent job of cooling, but together with the TITAN air cruiser unit, you can cool the air 40% faster and disperse cool air 70% more evenly throughout the room.
Copyright 2010 @LG Electronics / AC Company All Rights ReservedTITAN 21
3.1.7 Surround Cooling
3.1 USP 3. USP
The TITAN main unit itself does an excellent job of cooling, but together with the TITAN air cruiser unit, you can cool the air 40% faster and disperse cool air 70% more evenly throughout the room.
Copyright 2010 @LG Electronics / AC Company All Rights ReservedTITAN 22
3.1 USP
3.1.8 Pure Mist
Pure Mist
- In rooms that need more humidity, Titan Air Cruiser provides the healthiest moisture using water
plasma sterilization. Water plasma creates OH radical, H2O2, and Electric Potential to eliminate
99.9% of the bacteria in the water. Feel the difference in your home with Titan Air Cruiser!
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3.1 USP
3.1.9 Comfortable Relative humidity range
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3.1.10 Ez – Remote Controller
3.1 USP 3. USP
User Friendly & Modern Design and Easy use!!
User Friendly Design- Comfortable to grab
- Sliding type
Wide LCD
• Neo-Plasma• Smart Clean(for KLEBIO)
On/Off Button
Temperature setting
Display Operation Mode
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Easy Use- Bigger size button
- Highlight some buttons
with different colors
- Easy to recognize functions
with graphics
Display Operation Mode
Set Air Flow(Auto Swing)
Up/Down
Left/Right
Jet Cool
Timer
Room Temperature
Energy-savingCooling Mode
Display Screen Brightness
• Auto clean
• Function Setting
(for KLEBIO)
3.1 USP 3. USP
3.1.11 Anti – Corrosion Gold Fin™
Anti – Corrosion Gold Fin™
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Feature : Gold Coated Anticorrosive Fin.
Mechanism : Aluminum Fins are treated with Anticorrosive epoxy Treatment.
Result : Increase the life of Heat Exchanger by reducing surface corrosion.
3.1.12 Comfort Swing
3.1 USP 3. USP
Comfort Swing
- For customers who are sensitive to the direction of the air flow, LG Titan air conditioners feature
dynamic double vanes, which blow air in 6 different horizontal channels and 5 different vertical
swing mode.
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Various swing modes can be selected with the remote controller. With LG TITAN, you can make
fine adjustments to create the exact airflow you want.
3.1.13 Dynamic Double Vane
3.1 USP 3. USP
- LG Titan air conditioners create optimized air flow for cooling and heating modes using dynamic
double vanes.
Dynamic Double vane
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- In the cooling mode. Dynamic Double Vanes blow the air horizontally using bottom guide vane.
- In heating mode, the Dynamic Double Vanes push air downwards with upper vane to provide even
distribution of warm air, offering optimal cooling and heating performance.
3.1.14 Titan Surround Cooling Perfomance
3.1 USP 3. USP
LG TITAN Air Conditioning Cooling Speed
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4.1 Item Inside Product Box
4.1.1. Indoor Box
4. General Information
1 Indoor Unit
2 Owners Manual
3 Installation Manual
4 Remote Controller
5 Screw
4.1.2. Outdoor Box
1 Outdoor Unit
2 Anti Vibration Rubber
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2 Anti Vibration Rubber
4.2 Accessories 4. General Information
For End-user
1. Remote Controller
2. Battery
3. Owners Manual
For Installer
1. Installation Plate
2. Screw
3. Drain Hose
4. Installation Manual
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5.1.1 Cooling Only
5.1 Cycle Diagram 5. Product Details
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Note: Refer PDB for all the models.
LOC Description PCB Connector
Th1 Thermistor for indoor air temperatureCH-TH1
TH2 Thermistor for evaporating temperature
5.1.2 Heat Pump
5.1 Cycle Diagram 5. Product Details
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LOC Description PCB Connector
Th1 Thermistor for indoor air temperatureCH-TH1
TH2 Thermistor for evaporating temperature
Note: Refer PDB for all the models.
5.2 Dimensions 5. Product Details
Indoor
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NO Part Name
1 Front panel
2 Display & signal receiver
3 Air suction grille
4 Knockout hole
5 Installation Plate
5.2 Dimensions 5. Product Details
NO Part Name
1 Air discharge Grille
2 Gas Pipe Connection Port
3 Liquid Pipe Connection Port
4 Control Box
5 Earth Screw
Outdoor – UM Chassis
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Note: Refer PDB for the dimensions all the models.
5.3 Control Parts 5. Product Details
OutdoorIndoor
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Note: Refer PDB for PCB Details of all the models.
5.4 Wiring Diagram: Outdoor 5. Product Details
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5.5 Wiring Diagram: Indoor 5. Product Details
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6.1 Installation Scene 6. Installation
Connecting Outdoor Unit, Indoor Unit Refrigerant Pipe
More than100
INDOOR UNIT
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OUTDOOR UNIT
6.2.1 Safety Precautions
6. Installation6.2 Installation of Outdoor
WARNING
Always perform grounding Don`t use a power cord, a plug or
a loose socket which is damaged.For installation of the product,
always contact the service center
or professional installation agency. Otherwise, it may cause electrical shock.
Otherwise, it may cause a fire or electrical shock.
Otherwise, it may cause a fire,electrical shock, explosion or injury.
Always install a current leakage
breaker and a dedicated switching
board.
Securely attach the electrical
cover to indoor and pipe cover to
outdoor unit.
Do not keep or use flammable
gases or combustibles near the air
conditioner.
This symbol indicates the possibility of death or serious injury.
Installation
Copyright 2010 @LG Electronics / AC Company All Rights ReservedTITAN 40
board.
If the electrical part cover to indoor unit and pipe cover to outdoor unit are not attached securely, it could result in a fire or electric shock due to dust, water, etc.
No installation may cause a fire and electrical shock.
Otherwise, it may cause a fire, or the failure of product.
outdoor unit. conditioner.
Operation
Do not chare the outlet with other
appliances.
Do not use the damaged power
cord.Do not modify or extend the power
cord randomly.
It will cause an electric shock or a fire due to heat generation.
Otherwise, it may cause a fire or electrical shock.
Otherwise, it may cause a fire,electrical shock.
Take care so that the power cord
May not be pulled during operation.
Unplug the unit if strange sound,
smell, or smoke comes from it.Keep the flames away.
Otherwise, it may cause a fire or electrical shock.
Otherwise, it may cause electrical shock or a fire.
Otherwise, it may cause a fire.
6.2.1 Safety Precautions
6. Installation6.2 Installation of Outdoor
CAUTION
Install the drain hose to ensure that drain can be
securely done.
Install the product so that the noise or hot wind from
the outdoor unit may not cause any damage to the
neighbors. Otherwise, it may cause water leakage. Otherwise, it may cause dispute with the neighbors.
Keep level parallel while installing the product.
Otherwise, it may cause the failure of product. Otherwise, it may cause vibration or water leakage.
Always inspect gas leakage after the installation and
repair of product
This symbol indicates the possibility of injury or damage to only.
Installation
Copyright 2010 @LG Electronics / AC Company All Rights ReservedTITAN 41
Otherwise, it may cause the failure of product. Otherwise, it may cause vibration or water leakage.
Operation
Avoid excessive cooling and perform ventilation
sometimes.Use a soft cloth to clean. Do not use wax, thinner, or
a strong detergent.
Otherwise, it may do harm to your health. The appearance of the air conditioner may deteriorate, change color, or develop surface flaws.
Do not use the appliance for special purposes such as
Preserving animals vegetables, precision machine, or
art articles.
Do not place obstacles around the flow inlet or outlet
Otherwise, it may damage your properties.
Otherwise, it may cause failure of appliance or an accident.
It may cause corrosion on the product, corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient operation
Do not install the product where it will be exposed to
Sea wind (salt spray) directly.
6.2.2 Installation Parts
6. Installation
Installation Parts Supplied By Company
6.2 Installation of Outdoor
Installation plate Type “A” screw
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Type “B” screw Type “C” screw Remote control holder
The feature can be changed according a type of model
6.2.3 Installation Tools
6. Installation
Installation Tools Recommended By Company
6.2 Installation of Outdoor
Figure Name Figure Name
Screw driver Multi-meter
Electric drill Hexagonal wrench
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Measuring tape, Knife Ammeter
Hole core drill Gas-leak detector
SpannerThermometer,
Level
Torque wench Flaring tool set
6.2.4 Installation Of Outdoor
6. Installation
Installation Tool
1.Remove the tubing cover from the unit by loosening the screw.
6.2 Installation of Outdoor
Terminal Block
Cover control
Tubing Cover
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2. Align the center of the piping and sufficiently
tighten the flare nut by hand.
3. Finally, tighten the flare nut with torque wrench
until the wrench clicks.
• When tightening the flare nut with torque wrench,
ensure the direction for tightening follows the arrow
on the wrench.
②②②②
①①①①
Tubing Cover
③③③③Torque wrench
Gas side piping(Bigger diameter)
Liquid side piping(Smaller diameter)
6.2.5 Flaring Work
6. Installation6.2 Installation of Outdoor
Flaring Work
Main cause for gas leakage is due to defect of flaring
work. Carry out correct flaring work in the following
procedure.
Cut the pipes and the cable.1. Use the piping kit accessory or the pipes purchased
locally.
2. Measure the distance between the indoor and the
outdoor unit.
Copyright 2010 @LG Electronics / AC Company All Rights ReservedTITAN 45
outdoor unit.
3. Cut the pipes a little longer than measured distance.
4. Cut the cable 1.5m longer than the pipe length.
Burrs removal1. Completely remove all burrs from the cut cross
section of pipe/tube.
2. While removing burrs put the end of the copper
tube/pipe in a downward direction while
removing burrs location is also changed in order
to avoid dropping burrs into the tubing.
6.2 Installation of Outdoor 6. Installation
6.2.6 Flaring Work
Putting nut on• Remove flare nuts attached to indoor and outdoor unit, then put
them on pipe/tube having completed burr removal.
(not possible to put them on after finishing flare work)
Flaring Work
Flaring work1. Firmly hold copper pipe in a bar with the dimension shown in
below table below.
2. Carry out flaring work with the flaring tool.
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2. Carry out flaring work with the flaring tool.
Check1. Compare the flared work with the figure by.
2. If a flared section is defective, cut it off and do flaring work again.
Outside diameter A
inch
Ø6.35 1/4 1.1~1.3
Ø9.52 3/8 1.5~1.7
Ø12.7 1/2 1.6~1.8
Ø15.88 5/8 1.6~1.8
Ø19.05 3/4 1.9~2.1
6. Installation6.2 Installation of Outdoor
6.2.7 Settlement of Outdoor Unit
Settlement of outdoor unit1. Anchor the outdoor unit with a bolt and nut
(ø10mm) tightly and horizontally on a concrete
or rigid mount.
2. When installing on the wall, roof or rooftop,
anchor the mounting base securely with a nail
Bolt
Copyright 2010 @LG Electronics / AC Company All Rights ReservedTITAN 47
anchor the mounting base securely with a nail
or wire assuming the influence of wind and
earthquake.
3. If the vibration of the unit is transmitted to the
hose, secure the unit with an anti-vibration rubber. Tubing connection
6. Installation
6.2.8 Installation Guide at the Seaside
Selecting the location (Outdoor Unit)1) If the outdoor unit is to be installed close to the seaside, direct exposure to the sea wind should be avoided.
Install the outdoor unit on the opposite side of the sea wind direction.
6.2 Installation of Outdoor
Sea wind Sea wind
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Sea wind Sea wind
6. Installation6.2 Installation of Outdoor
6.2.8 Installation Guide at the Seaside
2) In case, to install the outdoor unit on the seaside, set up a windbreak not to be exposed to the sea wind.
• It should be strong enough like concrete to prevent the
sea wind from the sea.
• The height and width should be more than 150% of the
outdoor unit.
• Keep more than 700mm of space between outdoor unit
Sea wind
Windbreak
Copyright 2010 @LG Electronics / AC Company All Rights ReservedTITAN 49
3) Select a well-drained place.
1.If you can’t meet above guide line in the seaside installation, please contact LG Electronics for the additional
anticorrosion treatment.
2. Periodic ( more than once/year ) cleaning of the dust or salt particles stuck on the heat exchanger by using
water.
• Keep more than 700mm of space between outdoor unit
and the windbreak for easy air flow.
6.3.1 Selection of best location
6. Installation6.3 Installation of Indoor
Best location
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1. There should not be any heat or steam near the unit.
2. Select a place where there are no obstacles around of the unit.
3. Make sure that condensation drainage can be conveniently routed away.
4. Do not install near a doorway.
5. Ensure that the interval between a wall and the left (or right) of the unit is more than 100mm. The unit should
be installed as high as possible on the wall, allowing a minimum of 200mm from ceiling.
6. Use a metal detector to locate studs to prevent unnecessary damage to the wall
6. Installation
6.3.2 Fixing Installation Plate
Fixing Installation Plate
6.3 Installation of Indoor
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The wall you select should be strong and solid enough to prevent vibration
1. Mount the installation plate on the wall with type "A" screws. If mounting the unit on a concrete wall, use
anchor bolts.
• Mount the installation plate horizontally by aligning the centerline using Horizontal meter.
2. Measure the wall and mark the centerline. It is also important to use caution concerning the location of the
installation plate. Routing of the wiring to power outlets is through the walls typically.
Drilling the hole through the wall for piping connections must be done safely.
6.3.3 Hole Drilling
6. Installation
Drill a Hole in the Wall
6.3 Installation of Indoor
• Drill the piping hole with a ø70mm hole
core drill. Drill the piping hole at either
Copyright 2010 @LG Electronics / AC Company All Rights ReservedTITAN 52
core drill. Drill the piping hole at either
the right or the left with the hole slightly
slanted to the outdoor side.
6.3 Installation of Indoor6. Installation
Check1. Compare the flared work with the figure by.
2. If a flared section is defective, cut it off and
do flaring work again.
2.8 Installation of Indoor Unit
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1.Hook the indoor unit onto the upper portion
of the installation plate.( engage the three
hooks at the top of the indoor unit with the
upper edge of the installation plate) Ensure
that the hooks are properly seated on the
installation plate by moving it left and right
6. Installation
2.Unlock the tubing holder from the
chassis and mount between the chassis
and the wall in order to separate the
bottom side of the indoor unit from the wall
3. Insert the connecting cable through the bottom side of indoor unit and connect the cable
(You can see detail contents in 'Connecting the cables' section)
(1) Open the Front Grille
(2) Support the Front Grille with supporter
6.3 Installation of Indoor
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(2) Support the Front Grille with supporter
(3) Open the Control Cover
(4) Connect the connecting cable
6.4.1 IAQ (Indoor Air Quality) Unit
6. Installation6.4 Installation of Circular
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6.4.2 Installation Parts
6. Installation6.4 Installation of Circular
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6.4.3 Installation Tools
6. Installation6.4 Installation of Circular
Copyright 2010 @LG Electronics / AC Company All Rights ReservedTITAN 57
6.4.4 Location Selection
1. There should not be any heat or steam near the unit.
2. Select a place where there are no obstacles around
of the unit.
3. Do not install near a doorway.
4. Ensure that the interval between a wall and the left
(or right) of the unit is more than 400mm.
The unit should be installed on the wall, allowing a
minimum of 1500mm from floor
5. Use a metal detector to locate studs to prevent
unnecessary damage to the wall.
6. Installation6.4 Installation of Circular
Copyright 2010 @LG Electronics / AC Company All Rights ReservedTITAN 58
6. Installation6.4 Installation of Circular
6.4.5 Fixing Installation Plate
1. Measure the wall and mark the
centerline. It is also important to
use caution concerning the
location of the installation plate.
Routing of the wiring to power
outlets is through the walls
typically.
Copyright 2010 @LG Electronics / AC Company All Rights ReservedTITAN 59
2. The wall you select should be strong
and solid enough to prevent vibration
• Mount the installation plate on the wall
with type "A" screws. If mounting the
unit on a concrete wall, use anchor bolts.
6. Installation6.4 Installation of Circular
6.4.6 Drill a Hole in the Wall
For stability of the unit, drill a hole at the marked
point and fix the unit by screw.
• After installing the unit, make a hole in marked
position
• Mount the unit with type "A" screw and ring
washer
6.4.7 Maintenance and Service
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Water hotter than 40°C. It may cause deformation and discoloration.
Volatile substances. They may damage the surface of the IAQ (Indoor Air Quality) Unit.
Filter set (Pre Mesh , Allergy and Deodorization Filter) behind the doors should be checked and
cleaned once in every 2 weeks or more often it necessary.
Replacement and cleaning recommendations for filters :
6.4.7 Maintenance and Service
6.5 Piping & Wiring: Outdoor Unit 6. Installation
1.Remove the tubing cover from the unit by loosening the screw.
②②②②
Copyright 2010 @LG Electronics / AC Company All Rights ReservedTITAN 61
2. Align the center of the piping and sufficiently
tighten the flare nut by hand.
3. Finally, tighten the flare nut with torque
wrench until the wrench clicks.
• When tightening the flare nut with torque
wrench, ensure the direction for tightening
follows the arrow on the wrench. ③③③③
②②②②
①①①①
6.6 Piping & Wiring: Indoor Unit 6. Installation
(1) Pull the screw cap at the
bottom of the indoor unit
(2) Remove the chassis cover
from the unit by loosing
3screws
(Be careful not to scratch
Horizontal Vane Main!)Chassis Cover
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(3) Pull back the tubing holder.
(4) Remove pipe port cover
and position the tubing.
Backwards
Tubing holder
Left
Pipe Port
Right
Indoor unit back side view
6.6 Piping & Wiring: Indoor Unit 6. Installation
Good case• Press on the tubing cover and unfold
the tubing to downward slowly. And
then bend to the left side slowly.
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Bad case• Following bending case from right to
left directly may cause damage to the
tubing.
4. Tape the tubing pipe, drain hose and the connection cable. Be sure that the drain hose is located at the
lowest side of the bundle. Locating at the upper side can cause overflow from the drain pan through the inside
of the unit.
6.6 Piping & Wiring: Indoor Unit 6. Installation
If the drain hose is routed inside the room insulate the hose with an insulation material* so that dripping from
sweating (condensation) will not damage furniture or floors.
* Foamed polyethylene or equivalent is recommended.
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Connecting the installation pipe and drain hose to the indoor unit.
1. Align the center of the pipes and sufficiently
tighten the flare nut by hand
6.6 Piping & Wiring: Indoor Unit 6. Installation
2. Tighten the flare nut with a wrench 3. When needed to extend the drain hose of indoor
unit, assembly the drain pipe as shown on the
drawing
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Outside diameter A
inch
Ø6.35 1/4 1.8~2.5
Ø9.52 3/8 3.4~4.2
Ø12.7 1/2 5.5~6.5
Ø15.88 5/8 6.3~8.2
Ø19.05 3/4 9.9~12.1
6.6 Piping & Wiring: Indoor Unit 6. Installation
1. Overlap the connection pipe insulation material
and the indoor unit pipe insulation material. Bind
them together with vinyl tape so that there may be
2. Wrap the area which accommodates the
rear piping housing section with vinyl tape.
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them together with vinyl tape so that there may be
no gap.
3. Bundle the piping and drain hose together
by wrapping them with vinyl tape sufficient
enough to cover where they fit into the rear
piping housing section.
6.6 Piping & Wiring: Indoor Unit 6. Installation
Finishing the indoor unit installation1. Mount the tubing holder in the original position.
2. Ensure that the hooks are properly seated on
the installation plate by moving it left and
right.
3. Press the lower left and right sides of the unit
against the installation plate until the hooks
engage into their slots (clicking sound).
4. Finish the assembly by screwing the unit to
the installation plate by using two pieces of
type "C" screws. And assemble the chassis.
Type ‘C’ screw
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type "C" screws. And assemble the chassis.
5. Reinstall the chassis cover in Original place
Installation of filters (Optional)1. Pull out the [Allergy Filter + Triple Filter] from
the separately packed plastic bag.
2. Detach the two into tapes from the filter.
3. Insert the filter into the filter case.
4. Detach two into tapes from the plasma filter.Allergy free filter + Triple filter Plasma filter
6.6 Piping & Wiring: Indoor Unit 6. Installation
IndoorConnect the cable to the indoor unit by connecting the wires to the terminals on the control board individually
according to the outdoor unit connection. (Ensure that the color of the wires of the outdoor unit and the terminal
No. are the same as those of the indoor unit.)
If a power plug is not used, provide a circuit breaker between power
source and the unit as shown.
The earth wire should be longer than the common wires.
When installing, refer to the circuit diagram on the front panel.
Connect the wires firmly so that they may not be pulled out easily.
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Connect the wires firmly so that they may not be pulled out easily.
Connect the wires according to color codes, referring to the wiring
diagram.
Power Code
Capacity W (kBtu/h) 5 270 (18) 7 030 (24)
Normal cross
sectional area1.5 2.5
Unit Indoor Indoor
Cable Type H05VV-F H05VV-F
6.6 Piping & Wiring: Indoor Unit 6. Installation
The power cord connected to the Indoor unit should be selected according to the following specifications (Type
"B“ approved by HAR or SAA).
Power
Connecting Cable
Power
Connecting Cable
Communication
Connecting Cable
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Power Connecting Cable
Capacity W (kBtu/h) 5 270 (18) 7 030 (24)
Normal cross
sectional area1.5 2.5
Unit Indoor Indoor
Cable Type H05RN-F H05RN-F
Communication Connecting Cable
Capacity W (kBtu/h) 5 270 (18) 7 030 (24)
Normal cross
sectional area0.75 0.75
Unit Indoor Indoor
Cable Type H05RN-F H05RN-F
6.6 Piping & Wiring: Indoor Unit 6. Installation
Checking the Drainage
1. Pour a glass of water on the evaporator.
2. Ensure the water flows through the drain hose of the
indoor unit without any leakage and goes out the
drain exit.
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1. The drain hose should point downward for easy
drain flow.
2. Do not make drain piping like the following.
6.6 Piping & Wiring: Indoor Unit 6. Installation
Form the piping by wrapping the connecting portion of the indoor unit with insulation material and secure it with two kinds of vinyl tapes.• If you want to connect an additional drain hose, the
end of the drain outlet should be routed above the
ground. Secure the drain hose appropriately.
In cases where the outdoor unit isinstalled below the indoor unit perform thefollowing.
Forming the Piping
Drain hosePipe
Vinyl tape(narrow)
Wrap withvinyl tape(wide)
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following.1. Tape the piping, drain hose and connecting cable
from down to up.
2. Secure the tapped piping along the exterior wall
using saddle or equivalent.
In cases where the Outdoor unit is installed above the Indoor unit perform the following.1. Tape the piping and connecting cable from down to
up.
2. Secure the taped piping along the exterior wall.
Form a trap to prevent water entering the room.
3. Fix the piping onto the wall by saddle or equivalent.
Seal a small openingaround the piping's withgum type sealer.
Trap is required to prevent water from entering into electrical parts.
Seal a small openingaround the piping's withgum type sealer.
6.6 Piping & Wiring: Indoor Unit 6. Installation
Air purgingThe air and moisture remaining in the refrigerant system have undesirable effects as indicated below.
1. Pressure in the system rises.
2. Operating current rises.
3. Cooling (or heating) efficiency drops.
4. Moisture in the refrigerant circuit may freeze and block capillary tubing.
5. Water may lead to corrosion of parts in the refrigeration system.
Therefore, after evacuating the system, take a leak test for the piping and tubing between the indoor and
outdoor unit.
Air Purging
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outdoor unit.
Air purging with vacuum pump1. Preparation
• Check that each tube (both liquid and gas side tubes) between the indoor and outdoor units have been
properly connected and all wiring for the test run has been completed. Remove the service valve caps from
both the gas and the liquid side on the outdoor unit. Note that both the liquid and the gas side service valves
on the outdoor unit are kept closed at this stage.
2. Leak test
• Connect the manifold valve (with pressure gauges) and dry nitrogen gas cylinder to this service port with
charge hoses.
6.6 Piping & Wiring: Indoor Unit 6. Installation
To avoid nitrogen entering the refrigerant system in a liquid state,
the top of the cylinder must be higher than its bottom when you
pressurize the system. Usually, the cylinder is used in a vertical
standing position.
1.Do a leak test of all joints of the tubing (both indoor and outdoor)
and both gas and liquid side service valves. Bubbles indicate a
leak. Be sure to wipe off the soap with a clean cloth.
2. After the system is found to be free of leaks, relieve the nitrogen
pressure by loosening the charge hose connector at the nitrogen
cylinder. When the system pressure is reduced to normal,
disconnect the hose from the cylinder.
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disconnect the hose from the cylinder.
Soap water method1. Remove the caps from the 2-way and 3-way valves.
2. Remove the service-port cap from the 3-way valve.
3. To open the 2-way valve turn the valve stem
counterclockwise approximately 90°, wait for about
2~3 sec,and close it.
4. Apply a soap water or a liquid neutral detergent on the
indoor unit connection or outdoor unit connections by a
soft brush to check for leakage of the connecting points of
the piping.
5. If bubbles come out, the pipes have leakage
6.6 Piping & Wiring: Indoor Unit 6. Installation
Evacuation1. Connect the charge hose end described in the preceding
steps to the vacuum pump to evacuate the tubing and
indoor unit. Confirm the "Lo" knob of the manifold valve is open.
Then, run the vacuum pump. The operation time for evacuation
varies with tubing length and capacity of the pump. Required
time for evacuation when 30 gal/h vacuum pump is used If tubing
length is less than 10m (33 ft) 10 min. or more. If tubing length is
longer than 10m (33 ft) 15 min. or more
2. When the desired vacuum is reached, close the "Lo“ knob of the
manifold valve and stop the vacuum pump.
Indoor unit
Outdoor unit
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manifold valve and stop the vacuum pump.
Finishing the job1. With a service valve wrench, turn the valve stem of liquid
side valve counter-clockwise to fully open the valve.
2. Turn the valve stem of gas side valve counter-clockwise
to fully open the valve.
3. Loosen the charge hose connected to the gas side
service port slightly to release the pressure, then remove
the hose.
4. Replace the flare nut and its bonnet on the gas side
service port and fasten the flare nut securely with an
adjustable wrench. This process is very important to
prevent leakage from the system.
Outdoor unit
Manifold valve
Pressuregauge
Open Close
Vacuum pump
6.6 Piping & Wiring: Indoor Unit 6. Installation
5. Replace the valve caps at both gas and liquid side
service valves and fasten them tight.
This completes air purging with a vacuum pump.
The air conditioner is now ready to test run.
PUMP DOWNThis is performed when the unit is relocated or the refrigerant circuit is serviced.Pump Down means collecting all refrigerant into the outdoor unit without the loss of refrigerant.
Be sure to perform Pump Down procedure in the cooling mode.
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Be sure to perform Pump Down procedure in the cooling mode.
Pump Down Procedure1. Connect a low-pressure gauge manifold hose to the charge port on the gas side service valve.
2. Open the gas side service valve halfway and purge the air in the manifold hose using the refrigerant.
3. Close the liquid side service valve (all the way).
4. Turn on the unit's operating switch and start the cooling operation.
5. When the low-pressure gauge reading becomes 1 to 0.5kg/cm2 G(14.2 to 7.1 P.S.I.G.), fully close the gas
side valve and then quickly turn off the unit. Now Pump Down procedure is completed, and all refrigerant is
collected into the outdoor unit.
6.6 Piping & Wiring: Indoor Unit 6. Installation
Piping Length and Elevation
Capacity
W (kBtu/h)
Pipe Size[(in)] Standard
Length m(ft)
Max.
Elevation m(ft)
Max.
Length m(ft)
Additional Refrigerant g/m(oz/ft)
GAS LIQUID
5 274 (18) Ø12.7(1/2) Ø6.35(1/4) 7.5(25) 15(49) 20(65) 20(0.22)
7 032 (24) Ø15.88(5/8) Ø9.52(3/8) 7.5(25) 15(49) 20(65) 30(0.32)
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6.7 Accessory Installation 6. Installation
Installation of Filters (Plasma Filter, Allergy Filter)
Open the front panel as shown.
Then pull the filter tab slightly forward to remove the air filter.
After removing the air filter remove the plasma and Allergy Free Filter by slightly pulling downwards.
Allergy Filter+Triple Filter
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Allergy Free Filter + Triple Filter Plasma Filter
Installation of filters1. Pull out the [Allergy Filter + Triple Filter] From
the separately packed plastic bag.
2. Detach the two into tapes from the filter.
3. Insert the filter into the filter case.
4. Detach two into tapes from the plasma filter.
Plasma FilterTriple Filter
7.1 Start up 7. Start up
1. Check that all tubing and wiring are properly
connected.
2. Check that the gas and liquid side service valves
are fully open.
Test Running
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Prepare remote controller1. Remove the battery cover by pulling it according to
the arrow direction.
2. Insert new batteries making sure that the (+) and
(–)of battery are installed correctly.
3. Reattach the cover by pushing it back into position
7.1 Start up 7. Start up
Evaluation of the performanceOperate the unit for 15~20 minutes, then check the
system refrigerant charge:
1. Measure the pressure of the gas side service valve.
2. Measure the temperature of the intake and discharge
of air.
3. Ensure the difference between the intake
temperature and the discharge is more than 8°C
4. For reference; the gas side pressure of optimum
Test Running
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4. For reference; the gas side pressure of optimum
condition is as below. (Cooling)
The air conditioner is now ready for use.
If the actual pressure is higher than shown, the
system is most likely over-charged, and charge
should be
removed. If the actual pressure are lower than
shown, the system is most likely undercharged,
and charge should be added.
RefrigerantOutside ambient TEMP
The pressure of the gas
Side Service valve.
R22 35(95(95(95(95)))) 4~5/G(56.8~71.0 P.S.I.G)
R410A 35(95(95(95(95)))) 8.5~9.5/G(120~135 P.S.I.G)
Select the best Location
7.2 Checking point 7. Start up
Indoor unit Drain piping
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Outdoor unitSelf-Diagnosis Function
This unit has an inbuilt error diagnosis capability. If thermistor fails, “CH”
And “01/02”is displayed alternately.
Please contact your serviceman/dealer in such a situation
Error Display LED Check Point
• Indoor room temperature thermistor open/short
• Indoor pipe temperature thermistor open/short
Forced Operation
7.3 Operation 7. Start up
Normal Operation
1. The signal receiver is inside the unit.
2. Aim the remote controller towards the unit to operate it.
there should not be any blockage in between.
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Cooling Model
Heat pump Model
RoomTemp.
≥ 24 21 ≤ Room Temp<<<< 24 Room Temp<<<< 21
Operating mode
Cooling CoolingHealthy
DehumidificationHeating
Indoor FAN Speed
High High High High
Setting Temperature
22 22 23 24
Forced operation is used when the remote controller can't be used.
The operation will be started if the ON/OFF button is pressed. If you
want to stop the operation, re-press the button.
ON/OFFButton
7.4 Special Functions 7. Start up
Energy-Saving Cooling Mode (Optional)
Energy-saving cooling mode can save energy in cooling
operation, because it can operate efficiently by setting
Body-adaptation time according to the change of time
and temperature and adjusting desired temperature
automatically.
1. Press the ON/OFF BUTTON to the unit.
2. Open the cover of the remote
Display Luminosity (Optional)
The unit display Luminosity can be adjusted by
using the remote controller. Open the cover of
the remote controller and press the LED
LUMINOSITY button. Display LED will be dark, press
the button again to set bright display.
(The order of 100% → 0% LUMINOSITY is
repeated whenever you press the button.
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2. Open the cover of the remote controller Select cooling operation
3. Press the ENERGY-SAVING COOLING MODE BUTTON.
4. To cancel the energy-saving cooling mode, press the ENERGY-SAVING COOLING MODE BUTTON again and unit will operate in previous mode. (Cooling mode)
This operation is basically heating
or cooling function of the air
conditioner. But during this operation
the controller changes the operation
mode automatically to keep the
temperature within ± 2 with respect to the
setting temperature.
Auto changeover Operation (Optional)
7.4 Special Functions 7. Start up
Auto Operation (Optional)
<For Cooling Model>The temperature and fan speed are automatically set by the electronic controls based on the actual
room temperature. If you feel hot or cold, press TEMPERATURE SETTING buttons for more cooling
or heating effect.
You cannot switch the indoor fan speed. It has already been set by the Auto Operation Mode rule.
* Please select the code
as per your requirement.
FeelCode
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Warm-2
Slightly warm-1
Neutral0
Slightly cool1
Cold2
FeelCode
<For Heating Model>
You can set desired temperature and indoor fan speed,
setting Temp. Range : 18~30
: You can not set the actual setting temperature and the fan speed in this operation
mode, But you can use the Auto swing in this operation. If the system is not
operating as desired, switch manually to another mode
8.1 Basic Features 8. Control logic
Category Function
Air flow
Air supply outlet
Airflow direction control (left & right)
Airflow direction control (up & down)
Auto swing (left & right)
Auto swing (up & down)
Airflow steps (fan/cool/heat)
Chaos swing
Chaos wind (auto wind)
Jet cool (Power wind)
Swirl wind
Deodorizing filter
Category Function
Convenience
Auto changeover
Auto cleaning
Auto operation (artificial intelligence
Auto restart operation
Child lock
Forced operation
Group control
Sleep mode
Timer (on/off)
Timer (weekly)
Two thermistor control
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Note: Refer PDB for the Function of all the models.
Air purifying
Deodorizing filter
Plasma air purifier
Profiler (washable / anti-fungus)
Installation
Drain pump
E.S.P. control
Electric heater (operation)
High ceiling operation
Reliability
Hot start
Self diagnosis
Soft dry operation
Special
function kit
Zone control
CTIE
Electro thermostat
Two thermistor control
Individualcontrol
Standard wired remote controller
Deluxe wired remote controller
Simple wired remote controller
Wired remote controller (for hotel use)
Wireless remote controller (simple)
Wireless LCD remote control
CAC networkfunction
General central controller (Non LGAP)
Dry contact
Network Solution (LGAP)
P야야야야 (power distribution indicator)
PI 485
Others Thermistor
8.2 Compressor control 8. Control logic
When the intake air temperature reaches 0.5 below the setting temp, the compressor and the outdoor fan
stop.
When it reaches 0.5 above the setting temp, temp they start to operate again.
Compressor ON Temp Setting Temp +0.5
Compressor OFF Temp Setting Temp -0.5
While in compressor running, indoor fan operate with the airflow speed set by the remote controller.
While in compressor not running, indoor fan operate with the low airflow speed regardless of the setting.
Intake Air TempSetting Temp++++0.5
C/O Model
8.2.1 Cooling Control
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ON ON
ON ON
OFF
OFF
OFF
OFF
LOW LOW
3min 3min
< Cooling Mode Operation Graph >
Setting Temp
- 0.5(COMP OFF)
++++0.5(COMP ON)
Compressor
Outdoor Fan
Indoor FanSelecting
Fan Speed
Selecting
Fan Speed
OFF
OFF
LOW
ON
ON
Selecting
Fan Speed
8. Control logic8.2 Compressor control
At the beginning of Fuzzy mode operation, The setting temperature is automatically selected according to the
intake air temp at that time.
Intake Air. Temp Setting Temp
26≤ Intake Air.Temp 25
24≤ Intake Air.Temp <<<<26 Intake Air Temp +1
Intake Air.Temp ≤18
22≤ Intake Air.Temp <<<<24
18
Intake Air Temp +0.5
18≤ Intake Air.Temp <<<<22 Intake Air Temp
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According to the temperature set by Fuzzy rule, when the intake air temp is -0.5 or more below, the setting
temp, the compressor is turned off. When +0.5 or more above the setting temp, the compressor is turn on.
Compressor ON Temp Setting Temp +0.5
Compressor OFF Temp Setting Temp -0.5
While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the
temperature.
When the Fuzzy key (Temperature Control key) is input, the initial setting temperature is selected, the Fuzzy
key value and the intake air temperature at that time are compared to select the setting temperature
automatically according to the Fuzzy rule.
8. Control logic8.2 Compressor control
H/P Model
When any of operation mode is not selected like the moment of the power ON or when 3 hrs has passed
since the operation off, the operation mode selected.
When determining the operation mode, the compressor, the outdoor fan, and the 4 way valve are off and
only the indoor fan is operated for 15 seconds. Then an operation mode is selected according to the intake
air temp at that moment as follows.
Intake Air. Temp Setting Temp
24≤ Intake Air.Temp Fuzzy Operation for Cooling
8.2.2 Heating Control
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Indoor fan sped
High
Med
LowTi < 1
1≤ Ti < 2
2≤ Ti
Ti = Intake air temp - Comp off temp
If any of the operation mode among cooling/dehumidification/heating mode operations is carried out for
10 sec or longer before Fuzzy operation, the mode before Fuzzy operation is operated.
Fuzzy airflow control.
21≤ Intake Air.Temp <<<<24
Intake Air.Temp <<<< 21
Fuzzy Operation for Dehumidification
Fuzzy Operation for Heating
8. Control logic8.2 Compressor control
When the intake air temp reaches +3 over
the setting temp., the compressor is turned off.
When below the setting temp, the compressor
is turned on.
Compressor ON Temp. Setting Temp.
Compressor OFF Temp. Setting Temp +3.
While in compressor ON, the indoor fan is OFF
when the indoor pipe temp is below 26,
when above 28, it operate with the low
or setting airflow speed. (while in sleep
262835 Pipe Temp(Indoor)
10 sec
PIPE TEMP
INDOOR
33Intake Air TempIntake Air.
Temp
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or setting airflow speed. (while in sleep
mode, with the medium airflow speed)
While in compressor off, the indoor fan is off
when the indoor pipe temp is below 33,
when above 35, it operate with the low
airflow speed.
If overloaded while in heating mode operation,
in order to prevent the compressor from OLP
operation the outdoor fan is turned On/Off
according to the indoor pipe temp.
Setting Temp(COMP ON)
Setting Temp++++3.0(COMP OFF)
Compressor
Outdoor Fan
Indoor Fan STOP
4_way Valve
ON
ON
LOW
1min
ON
ON
LOW
1min
STOP
3min 3min
SFS
OFF
LOW STOP
OFF
LOW
ON
ON
ON
1min
LOW
OFF
OFF
SFS SFS
8. Control logic8.3 Healthy Humidification
When the dehumidification operation input from the remote controller is received, the intake air temperature
is detected and the setting temp is automatically set according to the intake air temperature.
While the intake air temperature is between compressor on temp. and compressor off temp.
10-min dehumidification operation and 4-min compressor off repeat.
Compressor ON Temp. Setting Temp +0.5
Compressor OFF Temp. Setting Temp -0.5
While in compressor off, the indoor repeats low airflow speed and pause.
In 10-min dehumidification operation, the indoor fan operates with low airflow speed.
Intake Air Temp Intake Air. Temp Setting Temp
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< Healthy Dehumidification Mode Operation Graph >
ON
ON
ON
ON
3’
20’ 10’ 10’
ON
ON
4’(Min)
OFF
OFF
ON
ON
4’ 10’(Max)
3 ’(Max)
ON
ON
OFF
OFF
4’
OFF
OFF
40”
OFF
OFF
OFF
OFF
OFF
OFF OFF OFF OFF
3’
20” 40”
Intake Air Temp
Setting Temp.
- 0.5(COMP OFF)
Setting Temp.++++0.5(COMP ON)
Compressor
Outdoor Fan
Indoor FanSelecting Fan Speed
Selecting Fan SpeedLOW LOW LOW LOWLOW LOW
Intake Air. Temp Setting Temp
26≤ Intake Air.Temp 2524≤ Intake Air.Temp <<<<26 Intake Air
Temp ----1Intake Air.Temp ≤1818<<<< Intake Air.Temp <<<<24
18Intake Air
Temp----0.5
8. Control logic8.4 Hot Start
The indoor fan stops until the evaporator piping temperature will be reached to 28.
During heating operation, if piping temperatures falls below 26 fan stops
The operation diagram is as following
28
Pipe Temp
(Indoor) Pipe Temp(Indoor)
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26
ON
1min
ON
ON
STOP LOW STOP LOW
1min
Compressor
Outdoor Fan
Indoor Fan
4_way Valve
Selecting
Fan Speed
Selecting
Fan Speed
< Hot-Start Operation Graph >
8. Control logic8.5 Heating Overload
During heating overload condition, if indoor pipe temperature is higher than a overload condition, outdoor fan
stop to prevent Comp OLP caused by overload.
Outdoor fan control
During heating operation comp on, if indoor pipe temperature is above T1 outdoor fan will be off, if below
T2 it will be on again.
T1Pipe Temp(Indoor)
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< Heating Overload Control Graph >
T2
ON
ON
ON ONOFF
Compressor
Outdoor Fan
Indoor Fan
4_way Valve
Selecting Fan Speed
8.6 Defrost Control 8. Control logic
During the heating mode operation, heating cycle is reversed to the cooling cycle to defrost the evaporator
pipe of the outdoor unit in order to protect the evaporator pipe of the outdoor unit from freezing (in defrost
control, the compressor is on, and the indoor fan, outdoor fan, and the 4-way valve are off.)
After continuous 10 min. of “compressor operation”, the maximum temp. of the indoor pipe is measured, and
it’s max. temp. is compared with the present temp. of indoor pipe in order to get the difference between the
max. temp. and present temp.
1) After 40 min. heating mode operation, the MICOM checks whether carry out defrost control or not and the
time of defrost control according to the index of several conditions at every 4 min. interval
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2) When the determined time of defrost control is below 7 min., heating mode operation continues without
carrying out defrost control according to the procedure stated above, the determination is made again.
When the defrost control time is 7 min or longer, defrost control is then carried out.
3) After 60 min., the logic shown above is same.
During the defrost control, the minimum temp of the indoor pipe is measured and it is compared with the
present temp. of the indoor pipe to get the difference of the indoor temperature. When the difference is 5
or higher, the defrost control is completed and heating mode operation is carried out.
8.6 Defrost Control 8. Control logic
< Defrost Control Graph : Fuzzy Logic >
Max Temp
Heating Cycle
40 min.
∆Tmax
HOT START
EndCOMP ON
10 min. Max Temp
Defrost
If the determined defrost time is completed before the end of defrost control, the defrost control is stopped
and heating mode operation is carried out regardless of the above condition in the defrost control.
when the indoor pipe temp is 42 or above, the defrost control is not carried out even if the condition is one
of the defrost conditions above.
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Intake
Air Temp
Pipe
Temp
ON
ON
OFF ON
ON
ON
OFF
OFF
ON
ON
Defrost
Time
∆Tmin=5 OverMin Temp
Defrost
Start
Defrost
End
Compressor
Outdoor Fan
Indoor Fan
4_way Valve
Defrost
Condition
Start
Heating Time(minutes)
30 60
0%%%%
Discharge Temp.(Indoor)
DefrostCondition(Outdoor)
8.7 4 – Way Valve 8. Control logic
At the beginning of heating mode, 4-way valve will operate in 2~3sec after receiving the data to operate
heating cycle.
When operation stops,4-way valve will stop after 30 sec delay to prevent some noise of refrigerant.
When operation mode changes cooling to heating, 4-way valve will operate in heating cycle after 2~3 sec
delay.
When defrost mode, it will operate in cooling cycle.
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In case 4-way valve need to be controlled due to changing the operation mode, comp must be stopped first
(but, another control on defrost mode)
In case 4-way valve is off condition (changing operation mode or operation off), compressor will be stopped in
advance, and 4-way valve will be controlled in 30 sec after Comp off.
8.8 Other Operations 8. Control logic
1. C/O Model
If the jet cool key is input at any operation mode during operation, the jet cool mode operates.
In the jet cool mode, the indoor fan is operated at super-high speed for 30 min at cooling mode operation.
In the jet cool mode operation, the room temperature is controlled to the setting temperature, 18
When the sleep time mode is input while in the jet Cool mode operation, the jet cool mode has the priority.
When the jet cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and then
operated in order that the air outflow could reach further.
2. H/P Model
8.8.1 Jet Cool
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2. H/P Model
While in heating mode or Fuzzy operation, the jet cool key cannot be input. When it is input while in the other
mode operation (cooling, dehumidification, ventilation), the jet cool mode is operated.
In the jet cool mode, the indoor fan is operated at super-high speed for 30 min. at cooling mode operation.
In the jet cool mode operation, the room temperature is controlled to the setting temperature, 18
When the sleep timer mode is input while in the jet cool mode operation, the jet cool mode has the priority.
When the jet cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and then
operated in order that the air outflow could reach further.
8. Control logic8.8 Other Operations
When the power is restored after a sudden power failure while in appliance operation , the mode before the
power failure is kept on the memory and the appliance automatically operates in the mode on the memory.
The slide switch on the main unit of the appliance should be on the Auto Restarting position in order that the
auto restarting operation is available.
Operation Mode that is kept on the memory
- State of Operation ON/OFF
- Operation Mode/Setting Temp/Selected Airflow Speed.
- Sleep Timer mode/Remaining Time of sleep timer (unit of hour)
8.8.2 Auto Restart
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- Auto Swing (Chaos Swing)
After restarting by the Auto Restarting function, the appliance keeps operating regardless of operating time.
When starting operation with forced operation , the initial operation mode is determined by room temperature.
Room temperature Mode Setting temperature Setting fan speed
24≤room temp Cooling 22 High
21≤room temp<24 Dehumidification 23 High
Room temp<21 Haeting 24 high
8. Control logic8.8 Other Operations
A. On - Timer Operation
When the set time is reached after the time is input by the remote controller, the appliance start to operate.
The Timer LED is on when the on-timer is input. It is off when the time set by the timer is reached.
If the appliance is on pause at the time set by the timer, the pause continues.
B. Off - Timer Operation
8.8.3 On/Off Timer
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When the set time is reached after the time is input by the remote controller, the appliance stops operate.
The Timer LED is on when the off-timer is input. It is off when the time set by the timer is reached.
If the appliance is on pause at the time set by the timer, the pause continues.
C. Off -Timer <=> On-Timer Operation
When the set time is reached after the on/off time is input by the remote controller, the on/off – timer
operation is carried out according to the set time.
8. Control logic8.8 Other Operations
The Setting temperature will be automatically raised by 1 30minutes later and by 2 1 hour later
(cooling/healthy dehumidification)
The operation will be stopped after 1,2,3,4,5,6,7 hour
Indoor fan control
- Cooling/ Healthy Dehumidification/ Auto Mode Low speed
- Heating/Auto Mode Mid speed
Sleep key input30 Min 30 Min
1
8.8.4 Sleep Timer
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Set Temp
Set Temp ----0.5(COMP OFF)
Set Temp ++++0.5(COMP ON)
COMP
Outdoor fan
Indoor fan speed
ON
ON
Selecting
fan speed
Intake air temp
Low (heat pump : Mid)
1
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
1
8. Control logic8.8 Other Operations
A. C/O Model
If you lose wireless remote controller, you can operate the unit with forced operation switch.
The standard conditions are as
8.8.5 Forced Operation
Cooling Model
Operation mode
Indoor fan Speed
Setting Temp.
Cooling
High
22
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In the forced operation mode, the indoor fan is operated at low speed for around 15 sec and then
the operation condition is set according to the intake air temperature as follows.
B. H/P Model
Intake Air. Temp Setting Temp
24≤ Intake Air.Temp Cooling Mode Operation,22,High Speed
21≤ Intake Air.Temp <24
Intake Air.Temp < 21
Dehumidification Operation,23,High Speed
Heating Mode Operation,24,High Speed
8. Control logic
A. Compressor 3minutes Delay
In the case when the compressor restarts after compressor off, there is time delay of 3-min. in order to
prevent damage to compressor due to frequent ON/OFF .
Once OFF, the indoor unit fan will start with a delay of 5 seconds in order to prevent noise which may be
caused if the vane opening time and the fan start time are the same.
B. Indoor Fan Start 5seconds Delay
8.8 Other Operations
8.8.6 Time Delay Operation
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Loads such as Fan speed control , Compressor, Timer etc are activated 2~ 3 seconds after the
corresponding key is pressed on the Remote controller .
C. Function Activation Delay Time
8. Control logic8.8 Other Operations
Comp and Outdoor fan stop when indoor evaporator pipe temperature is below 0 and restart when the pipe
temperature is above 7.
0
7
Pipe Temp(Indoor)
Pipe Temp(Indoor)
8.8.7 Eva Frosting Prevention
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Setting
fan speed
COMP
OUTDOOR FAN
INDOOR FAN SPEED
0
7Min
ON
Setting fan speed
OFF
ON
7Min
OFF
ON
ON
ON
ON
Low Low
OFF
OFF
3Min3Min
Setting fan speed
8. Control logic8.8 Other Operations
With heat pump model, cooling and heating operation is changed automatically on the basis of the room temp.
Setting Temp.
+0.5
+1
+2
-0.5
-1
-2
Inside Temp
8.8.8 Auto Changeover
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• Initial Setting Temp: 22 (Memorize the final setting temp)
• Control of setting temp.
-Wireless Remote Controller: 18-30 .
-Reset Button in indoor unit: finally memorized temp.
-Variation – 2 to + 2 Set.
Low
CYCLE
COMP on off offon on off on off on
Indoor FAN Low
off off
Low StopLow/
Stop
Low/
Stop
Set
Mode
Cooling Heating Cooling
Set
ModeSet
Mode
Set
ModeSet
Mode
8.9 PCB Details 8. Control logic
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Note: Refer PDB for PCB Details of all the models.
9.1 Error code 9. Troubleshooting
Thermistor Error Indicator
When the indoor pipe sensor or the room temperature sensor is open or is shorted, the error is indicted.
To indicate the error, the operation LED is flashed at 3 sec interval.
When the error is cleared, the LED stops flashing, the operation LED is on.
while in appliance pause, the error is not indicated
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Operation LED ON
LED OFF
LED ON
Sensor ERROR
LED OFF
LED ON
3 sec.
0.5 sec.
Sensor ERROR clear
Operation LED on
9.2 Trouble shooting 9. Troubleshooting
1. Product does not operate at all
Does "beeping" sound is made from the Indoor Unit?
Primarily, the operating condition of Micom is OK.Check the voltage of power (About AC 220V,
60Hz)(About AC 220/240V, 50Hz)
• Main power's voltage
• Voltage applied to the unit Check each load (Indoor/Outdoor Fan Motor,
(After 10 seconds)
NO YES
Turn on Main Power
Turn off Main Power
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• Replace Trans
• Replace IC04D
• Replace faulty
parts
• Connecting method of Indoor/Outdoor connecting cable
• Check PCB Assembly
- Fuse - Pattern damage - Varistor(ZNR01J)
Check the connection housing for contacting
• Connector related to CN-TAB1, RY-COMP NO.3
• Connector related to CN-MOTOR
• Connector contacting of Outdoor
Fan/Compressor
• Display PCB Assembly Check
Compressor, Stepping Motor) and contacting
condition of related connector
Remedy
Main PCB Board Operation Check
• SMPS Transformer(Indoor unit)
- Input Voltage
- Output Voltage(ZD02D)
• IC04D(7805) Output
(Indoor/Outdoor unit)
• IC01A(KIA7036,Reset IC)X01(8MHz)
-About AC220V/240V±±±± 10%
- Check the power voltage
- About DC12V
• DC +5V
• Voltage of Micom No. 2,(DC +4.5V over) and Soldering condition.
ContentItems
9.2 Trouble shooting 9. Troubleshooting
2. The product is not operate with the remote controller.
Turn on Main Power
While the compressor has been stopped, the compressor does notoperate owing to the delaying function for 3 minutes after stopped.
When the compressor stopped Indoor Fan is driven by a low speed. At this point thewind speed is not controlled by the remote controller. (When operated in the
Sleeping Mode, the wind speed is set to the low speed by force.).
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• Check the connecting circuit
between CN-DIS1②②②② - R01L(5.1kΩ) - C01L(680pF) - MICOM PIN 43
• Check Receiver Assembly
Check Display PCB Assembly
Voltage between CN DISP1 ①①①① – ⑦⑦⑦⑦
: DC+5V
Check point
Cause by the remote control Cause by other parts except the remote control
When the mark( ) is displayed in
LCD screen, replace battery.
Check the connecting circuit between the remote controller
MICOM (No.30 ) - R17(2Ω) - IRLED - TR- R16(2.2KΩ).
Check the contact of CN-DISP1 connector
9.2 Trouble shooting 9. Troubleshooting
3. Compressor/Outdoor Fan are unable to drive.
• Check the electrical wiring diagram of outdoor side.
• Check the abnormal condition
Turn on Main Power
Operate "Cooling Mode( )" by setting the desired temperature of the remote
controller is less than one of the indoor temperature by 1°°°°C at least.
When in Air Circulation Mode, Compressor/Outdoor Fan is stopped.
Check the sensor for indoor temperature is attached as close as to be effected
by the temperature of Heat Exchanger (EVA).
When the sensor circuit for indoor temperature and connector are in bad connection
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for the component of
Compressor/Outdoor Fan Motor.
• Check the "open" or "short" of connecting wires between indoor and outdoor.Check Relay (RY - COMP) for driving compressor.
• When the power (About AC220V/240V) is applied to the connecting wire terminal support transferred to compressor, PCB Assembly is normal.
• Check the circuit related to the relay.
Check point COMP ON COMP OFF
Bet. Micom(No.62) and GND
Between IC01M(No. 14) and GND Below DC 1V(app)
DC 5V DC 0V
About DC12V
When the sensor circuit for indoor temperature and connector are in bad connection or are not engaged, Compressor/Outdoor Fan is stopped.• Check the related circuit of RY-FAN.
• Check the indoor temperature sensor is disconnected or not (About 10kΩ / at 25°°°°C).
Turn off Main Power
9.2 Trouble shooting 9. Troubleshooting
4. When indoor Fan does not operate.
Turn off Main Power
Check the connection of CN-MOTOR
Check the Fan Motor
Check the Fuse(AC250V/T2A
Check the TRIAC high speed operation by remote control.(The Indoor Fan Motor is connected)
The voltage of PIN NO 1(orange) and 3(yellow) of CN-MOTOR.
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Check the related circuit of indoor Fan Motor.
• The pin NO 63 of Micom, and the part for driving TRIAC(the input and output signal of IC01M, PIN NO 7, 10)• Check the pattern• Check the TRIAC- TRIAC Open: Indoor Fan Motor never
operate- TRIAC short: Indoor Fan Motor always
operates in case of ON or OFF.
Turn ON Main Power
About AC 180V over
TRIAC is not damaged
About AC 50V over
TRIAC Check
9.2 Trouble shooting 9. Troubleshooting
• Confirm that the Vertical Louver is normally geared with the shaft of Stepping Motor.
• If the regular torque is detected when rotating the Vertical Louver with hands -> Normal
• Check the connecting condition of CN-U/D Connector
• Check the soldering condition (on PWB) of CN-U/D Connector
Check the operating circuit of the Vertical Louver
5. When Vertical Louver does not operate.
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If there are no problems after above checks
• Confirm the assembly conditions that are catching and interfering parts
in the rotation radial of the Vertical Louver
Check the operating circuit of the Vertical Louver
• Confirm that there is DC +12V between pin①①①① (RED) of CN-U/D and GND.
• Confirm that there is a soldering short at following terminals.
- Between 60,61,62 and 63 of MICOM
- Between 2,3,4 and 5 of IC01M
- Between 15,14,13 and 12of IC01M
9.2 Trouble shooting 9. Troubleshooting
6. When Heating does not operate
In heating mode, the indoor fan operates, in case the pipe temperature is higher
Turn ON Main Power
Operate “Heating Mode( )” by setting the desired temperature of the remote control higher than one of the indoor
temperature by 2°°°°C at least.
About
DC 12V
Check the DC voltage on the PCB ASSEMBLY
• The details of check are as followings• Comp Relay.
Check point
Between Micom
(NO.59) and GND
Between IC01M
(NO.11) and GND
Comp ON
DC 5V
Below
DC 1V
Comp OFF
DC 0V
About
DC 12V
• 4 way Relay
• Outdoor fan Relay
Between Micom
(NO.53) and GND
Between IC02M
(NO.12) and GND
Fan ON
DC 5V
Below
DC 1V
Fan OFF
DC 0V
Check point
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in case the pipe temperature is higher
than 28°°°°C.
Check the connector of intake and pipe sensor (thermostors)
• Check the related circuit of RY-4WAY
• Check the indoor room temperature is
disconnected or not (about 10KΩ/at 25°°°°C).
• Check the indoor pipe temperature is
disconnected or not (about 5KΩ/at 25°°°°C).
Between Micom(NO.51) and GND
Check point
Between IC02M(NO.11) and GND
4 way ON
DC 5V
Below DC 1V
4 way OFF
DC 0V
About DC 12V
• 4 way Relay
• Check the electrical wiring diagram of outdoor side.
• Check the abnormal condition for the component of Compressor / Outdoor Fan Motor, 4 way.
• Check the "open" or "short" of connecting wires between indoor and
outdoor.
Turn off Main Power
Publisher : CAC Engineering Team
Air Conditioning Company
LG Electronics Inc.
TITAN
LG Electronics Inc.
The date of issue : 2010.05
Copyright Copyright Copyright Copyright 2010 by LG Electronics, Inc. All rights reserved.2010 by LG Electronics, Inc. All rights reserved.2010 by LG Electronics, Inc. All rights reserved.2010 by LG Electronics, Inc. All rights reserved.No part of this publication may be reproduced or distributed in any No part of this publication may be reproduced or distributed in any No part of this publication may be reproduced or distributed in any No part of this publication may be reproduced or distributed in any form or by any means, without the prior written permission of the form or by any means, without the prior written permission of the form or by any means, without the prior written permission of the form or by any means, without the prior written permission of the publisher.publisher.publisher.publisher.
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