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Service Manual - Page 1
....com
LG Multi Type Air Conditioner
SERVICE MANUAL
MODEL
• Indoor Unit:
Room Type
AMNH093D4A0(LMN090HE) AMNC093D4A0(LMN090CE) AMNH123DEA0(LMN120HE) AMNC123DEA0(LMN120CE)
Art Cool Type
AMNH093APM0(LMAN090HNS) AMNC093APM0(LMAN090CNS) AMNH123APM0(LMAN120HNS) AMNC123APM0(LMAN120CNS)
• Outdoor Unit: A3UH363FA0(LMU360HE) A3UC363FA0(LMU360CE)
LG
CAUTION
• BEFORE SERVICING THE...
Service Manual - Page 2
Multi type Air Conditioner Service Manual
TABLE OF CONTENTS
Model Number Nomenclature ...3 Symbols Used in this Manual ...4
Safety Precautions...5 Dimensions...11
Indoor Unit...11 Outdoor Unit ...12 Product Specifications ...13 Installation ...15 Installation Parts...15 Installation Tools...15 Select the best location ...16 Piping length and elevation ...17 Fixing Installation Plate(Standart Type...
Service Manual - Page 6
... the dealer or an Authorized Service Center.
• There is risk of the case edges and the fins on a Be sure the installation area defective installation stand. does not deteriorate with...
damage furniture. Do not install the product on the condenser and evaporator.
Take care to the product.
• If the base collapses, the air conditioner could cause injury. Safety Precautions...
Service Manual - Page 8
...Multi type Air Conditioner or fall onto the outdoor unit.
• There is risk of product damage or failure, or unintend- • This could step on connect the power supply plug or turn off when cleaning or maintaining the product.
• There is risk of electric shock. installing...Keep level even when
age after installation or repair of product.
Install the drain hose to ensure that...
Service Manual - Page 14
...Column/No. Installation
Indoor Unit~...5m -Level Difference of innovation some specifications may be changed without notification.
14 Multi type Air Conditioner
A3UH363FA0(LMU360HE)
9,000~36,000 ... 5 : See the page "Combination Table" 4. Product Specifications
Outdoor Unit -
Number of Zero. Multiple piping models
Model
Cooling Capacity5
Btu/hr
W
kcal/hr
Heating Capacity5
Btu/hr...
Service Manual - Page 20
... rear surface)
2. Look at suited horizon by adhesive tape. Horizontality
INSTALLATION GUIDE MAP
Indoor
WALL
Outdoor
5-7mm (0.2~0.3")
20 Multi type Air Conditioner
Drive the fore plastic anchors into drilled points.
In case of product with the hole slightly slanted to No. 5 on
the horizontal setting line, and Fix lightly the
map by horizontal meter on this...
Service Manual - Page 22
...
Connecting the Piping
Indoor
1. Prepare the indoor unit's piping and drain hose for installation through the piping hole. • Do not connect the cable to overflow inside ...
Replace only the plastic tubing holder 1, not the holder 2 in the direction of rear right.
2. Be sure that dripping from chassis.
3. If a flared section is recommended.
22 Multi type Air Conditioner
...
Service Manual - Page 24
... connection later.
4. When extending the drain hose at the top of the indoor unit from the hooks at the indoor unit, install the drain pipe.
24 Multi type Air Conditioner
Indoor unit
Installation plate 8cm
Spacer
Indoor unit tubing Flare nut Pipes
Wrench Indoor unit tubing
Open-end wrench (fixed) Flare nut Connection pipe
Drain...
Service Manual - Page 30
...of the outdoor unit and the terminal No. AWG18
Low voltage (below . When installing, refer to change without notice.
RECOMMAND: • The circuit diagram is not... • Connect the wires according to color codes by referring to the outdoor unit should be complied with the following specifications (ETL recognized and CSA certified). RECOMMAND: The...
30 Multi type Air Conditioner
Service Manual - Page 35
...ground. In cases where the Outdoor unit is installed below the indoor unit perform the following .
1. Tape the piping, drain hose and connecting cable from entering into electrical parts.
Fix the piping onto the wall by ...routed above the Indoor unit perform the following .
1.
Trap
Trap
Service Manual 35 Secure the taped piping along the exterior wall using saddle or equivalent.
Service Manual - Page 38
...5m(25ft) 20g/m(0.22oz/ft)
Example: A 80ft line set is used either shorter or longer then the nominal 22.5m(75ft: for tri-zone) line set is used for tri - zone 5 additional ft X 0.22 ounces per meter(foot).... nameplate charge adjusting for line sets longer or shorter than 7.5m(25ft) for each indoor line. Any time total line set for each indoor unit.
38 Multi type Air Conditioner
Service Manual - Page 65
... OFF OFF OFF
Outdoor Error
Error code
Description
MPS Variable LED1(Red) LED2(Green) Indoor Status
33
D-Pipe High(Normal)
44
Outdoor Air Thermistor Error(Open/Short)
45
Cond Pipe Thermistor Error(Open/Short)
47
Const. Troubleshooting Guide
Self-diagnosis Function
s Error Indicator • The function is to self-diagnoisis airconditioner and express the troubles identifically if there...
Service Manual - Page 67
... of Micom is made from the indoor unit? Trouble 1 The Product doesn't operate at all. NO
Check the voltage of power(AC208V/AC230V, 60Hz).
• The voltage of main power. • The voltage applied to electronic contorol device drawing & schematic diagram. Troubleshooting Guide
Turn off . Electronic Parts Troubleshooting Guide
❇ Refer to the unit. • The...
Service Manual - Page 74
...
1. Check the constant compressor. Check the combination table. 5 In the tropical model case ➔ single cycle has no error for over load. 2. high
Check point & Normal condition
• Check the discharge pipe sensor. • Check the install condition for over capacity.
74 Multi type Air Conditioner
bination
• Check the combination table
❑ Check Point
1. Check...
Service Manual - Page 76
...outdoor unit
Works Shipping
Air purging 1. (Installation)
Operation
Pumping down 2. (Transfering)
Evacuation 3. (Servicing)
Gas charging 4. (Servicing)
Pressure check 5. (Servicing)
Gas releasing
6.
(Servicing)
Shaft position Closed
(with valve cap) Open
(counter-clockwise)
Open (with valve cap)
Closed (clockwise)
Open
Open
Open
Open
76 Multi type Air Conditioner
Shaft position Closed...
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