LG AMNH096AP 1 Series User manual

LG
Multi Type Air Conditioner
SERVICE MANUAL
LG
CAUTION
website http://www.lgservice.com
e-mail http://lgservice.com/techsup.html
• BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.
• ONLY FOR AUTHORIZED SERVICE PERSONNEL.
MODEL
• Indoor Unit: AMNH076LQL0
AMNH096LQL0
AMNH096LRL0
AMNH126LRL0
AMNH186LTL0
AMNH246LTL0
AMNH096AP*1
AMNH126AP*1
AMNH076DZ*0
AMNH096DU*0
AMNH126DU*0
• Outdoor Unit: A2UW146FA0
A2UW186FA0
A3UW186FA0
A3UW246FA0
A4UW246FA0
A4UW306FA0
A6UW406FA0
A7UW486FA0
A8UW566FA0
Room Type
Art Cool Type
Art Cool Deluxe Type
Duct Type 1 Way CST
AMNH096BTG0
AMNH126BTG0
AMNH186BTG0
AMNH096BPA0
AMNH126BPA0
AMNH186BHA0
AMNH246BHA0
AMNH306BGA0
AMNH366BGA0
AMNH096TCC0
AMNH126TCC0
4 Way CST
AMNH126TEC0
AMNH186TEC0
AMNH246TFC0
AMNH306TFC0
AMNH366TDC0
AMNC126TEC0
AMNC186TEC0
AMNC246TFC0
CVT
AMNH096VEA0
AMNH126VEA0
AMNH186VBA0
AMNH246VBA0
AMNC246VBA0
A2UQ166FA0
A3UQ186FA0
A6UQ406FA0
A8UQ566FA0

2Multi type Air Conditioner
Multi type Air Conditioner Service Manual
TABLE OF CONTENTS
Model Number Nomenclature....................................................................................................................3
Symbols Used in this Manual...................................................................................................................5
Safety Precautions......................................................................................................................................6
Dimensions................................................................................................................................................12
Indoor Unit.............................................................................................................................................12
Outdoor Unit...........................................................................................................................................20
Product Specifications ............................................................................................................................22
Installation.................................................................................................................................................28
Select the best location of indoor unit ....................................................................................................28
How to fix ...............................................................................................................................................31
Piping and Drainage of Indoor Unit........................................................................................................38
Connection of indoor unit piping.............................................................................................................39
Remote Controller Installation................................................................................................................62
Connecting Pipings and the cable to Outdoor unit.................................................................................64
Checking the Drainage and Pipe forming...............................................................................................66
Maximum Length of Pipe and Extra Charge of Refrigerant Charge.......................................................71
Test Running ..........................................................................................................................................78
System Layout and Piping Length..........................................................................................................81
Installation..............................................................................................................................................82
Installation of The Main Unit...................................................................................................................83
Connection of Piping..............................................................................................................................84
Connection of Wiring..............................................................................................................................85
Operation ..................................................................................................................................................86
Function of control..................................................................................................................................86
Function of Indoor Unit...........................................................................................................................91
Function of Outdoor Unit........................................................................................................................97
Remote Control Operation .....................................................................................................................98
Control Devices and Function ...............................................................................................................106
Simple Central Control.........................................................................................................................106
Term of Each part and Function...........................................................................................................106
Electrical wiring ....................................................................................................................................107
Deluxe Central Control.........................................................................................................................113
Disassembly of the parts (Indoor unit) .................................................................................................119
Indoor unit ............................................................................................................................................119
Schematic Diagram.................................................................................................................................133
Electronic Control Device.....................................................................................................................133
Wiring Diagram.....................................................................................................................................142
Components Locations.........................................................................................................................146
Troubleshooting Guide...........................................................................................................................161
Refrigeration Cycle Diagram................................................................................................................161
Self-diagnosis Function........................................................................................................................166
Cycle Troubleshooting Guide................................................................................................................167
Electronic Parts Troubleshooting Guide ...............................................................................................168
General Information..............................................................................................................................173
(3-way) Valve ...........................................................................................................................................189
Exploded View & Replacement Parts List ............................................................................................193
Indoor Unit ...........................................................................................................................................193
Outdoor Unit ........................................................................................................................................222

Service Manual 3
Model Number Nomenclature
Model Number Nomenclature
Indoor Unit
Outdoor Unit
AMN H 6
07 QLA0
Serial Number
A2U W 618 F A 0
Electrical Ratings
MPS Inverter Multi System Indoor Unit
Model Type
H : Heat Pump C : Cooling Only
Ex) 7,000 Btu/h '07', 18,000 Btu/h '18'
Nominal Cooling Capacity in Btu/h
Electrical Rating
6 : 1Ø, 220-240V, 50Hz
Chassis Name
Indoor Unit Type
L : Wall Mounted , A : ART COOL
D : ART COOL DELUXE, T : Ceiling Cassette
B : Ceiling Concealed Duct
V : Ceiling & Floor(Convertible)
Function
A : Basic, L : Nano Plasma + Auto Clean(Wall Mounted)
C: Plasma(Ceiling Cassette), G: Low Static Motor
ART COOL(DELUXE) Type Front Panel Color
B : Blue, D : Wood, M : Meta, R : Mirror, W : White
R410A MPS Inverter Multi System Outdoor Unit.
And No. of Connectable Indoor Units
Ex) A2U : Connectable max. 2 Indoor Units
A6U : Connectable max. 6 Indoor Units
Model Type
W : DC Inverter Heat Pump Q : DC Inverter Cooling Only.
Ex) 18,000 Btu/h '18', 48,000 Btu/h, '48'
Nominal Cooling Capacity in Btu/h
6 : 1Ø, 220-240V, 50Hz
8 : 3Ø, 380-415V, 50Hz
Multi Type
Function
A : Basic
F : Free Joint Multi Type
Serial Number

Model Number Nomenclature
Panel (Cassette, Built in Duct)
4Multi type Air Conditioner
PT-CFA 3721A10072B 8435002992862 COOLING
TF PT-CFC 3721A10072G 8435002992879 COOLING + PLASMA
PT-HFA 3821A10072A 8435002992886 HEATING
PT-HFC 3721A10072E 8435002992893 HEATING + PLASMA
PT-CCA 3721A10023Z 8435002994095 COOLING
TC PT-CCC 3721A10023W 8435002994101 COOLING + PLASMA
PT-HCA 3721A10023Y 8435002994118 HEATING
CST PANEL PT-HCC 3721A10023V 8435002994125 HEATING + PLASMA
PT-HEA 3721A10105A 8435002992978 HEATING
TE(family look) PT-HEC 3721A10105B 8435002992985 HEATING + PLASMA
PT-CEA 3721A10105C 8435002992954 COOLING
PT-CEC 3721A10105D 8435002992961 COOLING + PLASMA
PT-HAD 3721A10106A 8435002994057 HEATING
TD(family look) PT-HDC 3721A10106B 8435002994064 HEATING + PLASMA
PT-CDA 3721A10106C 8435002994071 COOLING
PT-CDC 3721A10106D 8435002994088 COOLING + PLASMA
BUILT IN DUCT BP PB-HPA 3721A20168A 9K/12K
BQ PB-HQA 3721A20168B 18K/24K
Category CHASSIS PANEL NAME PANEL P/NO. SERIAL NO. Remark
123456
PT-HEA
Basic A
B
Plasma Filter C
D
Elevation Grille E
Elevation Grille + Plasma Filter F
TE/TB/TD Before 2003 : Basic 0
TE/TD Before 2003 : Plasma Filter 1
6. Function
5. Chassis Name
Function
Number Contents
1, 2 Panel for Cassette
3-
4 Cooling/Heatpump
5 Chassis Name
6 Function
Chassis Abbrevation
TC C
TB B
TD D
TE E
TF F
TH H
TJ J
BP P
BQ Q

Service Manual 5
Model Number Nomenclature
Indoor Units
Outdoor Units
2.1
(7000) 2.6 (9000) 3.5 (12000) 5.3 (18000) 7.0 (24000) 8.8 (30000) 10.6 (36000)
SQ AMNH
076LQL0 AMNH
096LQL0 -- - - -
SR -AMNH
096LRL0 AMNH 126LRL0 ----
ST ---
AMNH
186LTL0 AMNH 246LTC0 --
General SP1 -AMNN
096AP*1 AMNN 126AP*1 ----
SZ AMNH
076DZ*0 --- - - -
SU -AMNH
096DU*0 AMNH 126DU*0 ----
1Way TC -AMNH
096TCC0 AMNH 126TCC0 ----
TE --
AMNH/C
126TEC0 AMNH/C 186TEC0 -- -
TF ----
AMNH/C
246TFC0 AMNH 306TFC0 -
TD ---- --
AMNH
366TDC0
BH ---
AMNH
186BHA0 AMNH 246BHA0 --
BG ---- -
AMNH
306BGA0 AMNH 366BGA0
Low
Static BT -AMNH
096BTG0 AMNH 126BTG0 AMNH 186BTG0 -- -
Built in BP -AMNH
096BPA0 AMNH 126BPA0 ----
VE -AMNH
096VEA0 AMNH 126VEA0 ----
VB ---
AMNH
186VBA0 AMNH/C 246VBA0 --
Chasiss
Model Name
Capacity, kW(Btu/h)
Wall
Mounted General
Ceiling &
Floor Convertible
Category Type
ART
COOL Mirror
Ceiling
Cassette 4Way
Ceiling
Concealed
Duct
High
Static
Notes :
A2UW146FA0, A2UW186FA0 and A3UW186FA0 are not TPS inverter system but one inverter compressor system.
MPS Inverter Multi Series Multi Piping Type Distributor Type
Heat Pump Model Name
Rated Capacity Cooling kW(Btu/h)
Heating kW(Btu/h)
Number of Indoor Units to be Connected
Indoor Units kW
Connectable Capacity Btu/h
Power Supply
A2UW146FA0 A2UW186FA0 A3UW186FA0 A3UW246FA0 A4UW246FA0 A4UW306FA0 A6UW406FA0 A7UW486FA0 A8UW566FA0
4.7(1600) 5.3(18000) 5.3(18000) 7.0(24000) 7.0(24000) 8.8(30000) 11.7(40000) 14.0(48000) 16.4(56000)
5.3(1800) 6.3(21600) 6.3(21600) 8.2(28000) 8.2(28000) 10.1(34500) 13.5(46000) 16.2(55200) 18.9(64400)
Max.2 Units Max.2 Units Max.3 Units Max.3 Units Max.4 Units Max.4 Units Max.6 Units Max.7 Units Max.8 Units
2.1~6.2 2.1~7.0 2.1~7.0 2.1~9.7 2.1~9.7 2.1~11.4 4.7~15.2 5.6~18.3 6.6~21.3
7000~21000 7000~24000 7000~24000 7000~33000 7000~33000 7000~39000 16000~52000 19200~62400 22400~72800
1Ø, 220-240V, 50Hz
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that could cause harm to the
air conditioner.
This symbol indicates special notes.
NOTICE
Symbols Used in this Manual

6Multi type Air Conditioner
Safety Precautions
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must
be followed.
■Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is
classified by the following indications.
■Meanings of symbols used in this manual are as shown below.
WARNING
CAUTION
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
WARNING
■Installation
Be sure not to do.
Be sure to follow the instruction.
Do not use a defective or under-
rated circuit breaker. Use this
appliance on a dedicated circuit.
•There is risk of fire or electric
shock.
For electrical work, contact the
dealer, seller, a qualified electrician,
or an Authorized Service Center .
•Do not disassemble or repair the
product. There is risk of fire or
electric shock.
Always ground the product.
•There is risk of fire or electric
shock.
Install the panel and the cover
of control box securely.
•There is risk of fire or electric
shock.
Always install a dedicated cir-
cuit and breaker.
•Improper wiring or installation may
cause fire or electric shock
Use the correctly rated break-
er or fuse.
•There is risk of fire or electric
shock.

Service Manual 7
Safety Precautions
Do not modify or extend the
power cable.
•There is risk of fire or electric
shock.
Do not install, remove, or re-
install the unit by yourself
(customer).
•There is risk of fire, electric shock,
explosion, or injury.
Be cautious when unpacking
and installing the product.
•Sharp edges could cause injury.
Be especially careful of the case
edges and the fins on the con-
denser and evaporator.
For installation, always con-
tact the dealer or an
Authorized Service Center.
•There is risk of fire, electric shock,
explosion, or injury.
Do not install the product on a
defective installation stand.
•It may cause injury, accident, or
damage to the product.
Be sure the installation area
does not deteriorate with age.
•If the base collapses, the air condi-
tioner could fall with it, causing
property damage, product failure,
and personal injury.
Do not let the air conditioner
run for a long time when the
humidity is very high and a
door or a window is left open.
•Moisture may condense and wet or
damage furniture.
Take care to ensure that
power cable could not be
pulled out or damaged during
operation.
•There is risk of fire or electric
shock.
Do not place anything on the
power cable.
•There is risk of fire or electric
shock.

8Multi type Air Conditioner
Safety Precautions
Do not allow water to run into
electric parts.
•It may cause There is risk of fire,
failure of the product, or electric
shock.
Do not store or use flammable
gas or combustibles near the
product.
•There is risk of fire or failure of
product.
Do not use the product in a
tightly closed space for a long
time.
•Oxygen deficiency could occur.
When flammable gas leaks,
turn off the gas and open a
window for ventilation before
turn the product on.
•Do not use the telephone or turn
switches on or off. There is risk of
explosion or fire
If strange sounds, or small or
smoke comes from product.
Turn the breaker off or discon-
nect the power supply cable.
•There is risk of electric shock or
fire.
Stop operation and close the
window in storm or hurricane.
If possible, remove the prod-
uct from the window before
the hurricane arrives.
•There is risk of property damage,
failure of product, or electric shock.
Do not plug or unplug the
power supply plug during
operation.
•There is risk of fire or electric
shock.
Do not touch(operate) the
product with wet hands.
•There is risk of fire or electrical
shock.
Do not place a heater or other
appliances near the power
cable.
•There is risk of fire and electric
shock.
Gasolin

Service Manual 9
Safety Precautions
Do not open the inlet grill of the product
during operation. (Do not touch the elec-
trostatic filter, if the unit is so equipped.)
•There is risk of physical injury,
electric shock, or product failure.
When the product is soaked
(flooded or submerged), contact
an Authorized Service Center.
•There is risk of fire or electric
shock.
Be cautious that water could
not enter the product.
•There is risk of fire, electric shock,
or product damage.
Ventilate the product from time to time when
operating it together with a stove, etc.
•There is risk of fire or electric shock.
Turn the main power off when cleaning or
maintaining the product.
•There is risk of electric shock.
When the product is not be used for a long time, dis-
connect the power supply plug or turn off the breaker.
•There is risk of product damage or failure, or unintend-
ed operation.
Take care to ensure that nobody could step on
or fall onto the outdoor unit.
•This could result in personal injury and product dam-
age.
Always check for gas (refrigerant) leak-
age after installation or repair of product.
•Low refrigerant levels may cause
failure of product.
Install the drain hose to ensure that
water is drained away properly.
•A bad connection may cause water
leakage.
Keep level even when
installing the product.
•To avoid vibration or water leak-
age.
CAUTION
■Installation
90°

10 Multi type Air Conditioner
Do not block the inlet or outlet
of air flow.
•It may cause product failure.
Use a soft cloth to clean. Do
not use harsh detergents, sol-
vents, etc.
•There is risk of fire, electric shock,
or damage to the plastic parts of
the product.
Do not touch the metal parts of
the product when removing the
air filter. They are very sharp!
•There is risk of personal injury.
Safety Precautions
Do not install the product
where the noise or hot air
from the outdoor unit could
damage the neighborhoods.
•It may cause a problem for your
neighbors.
Use two or more people to lift
and transport the product.
•Avoid personal injury.
Do not install the product
where it will be exposed to
sea wind (salt spray) directly.
•It may cause corrosion on the
product. Corrosion, particularly on
the condenser and evaporator fins,
could cause product malfunction or
inefficient operation.
Do not expose the skin directly to cool air for
long periods of time.
(Don't sit in the draft.)
•This could harm to your health.
Do not use the product for special purposes,
such as preserving foods, works of art, etc. It
is a consumer air conditioner, not a precision
refrigeration system.
•There is risk of damage or loss of property.
■Operational
Wax
Thinner