LG M2400HR Support and Manuals
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Service Manual - Page 1
Thermostat
Auto Swing
Off On
Fan
Operation Off
Warmer
Low Heat
Cooler WBaeiftoTrehrReeesMtainrtuintegs
High Heat
Fan Low Cool
High Cool
MODELS: R1804H/M2400HR/HBLG1800H/LWM1836B5S ONLY FOR AUTHORIZED SERVICE.
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
- website http://www.lgservice.com
Room Air Conditioner
SERVICE MANUAL
CAUTION
-
Service Manual - Page 2
... ...11 Disassembly instructions...13 Mechanical parts ...13 Air Handling Parts ...14 Electrical Parts ...15 Refrigeration cycle ...18 Troubleshooting guide...21 Piping System ...21 Troubleshooting guide ...22 Schematic Diagram...27 Electronic Control Device ...27 Components location (Main P.W.B Assembly 28 Wiring Diagram...29 Product Specifications ...31 Exploded View...32 Replacement Parts List...
Service Manual - Page 3
... and property damage, the following indications. Service Manual 3 CAUTION This symbol indicates the possibility of electric shock. s Installation
WARNING
Do not use the power plug and socket with the ground terminal.
• There is risk of fire or electric shock.
• There is
classified by the following instructions must be followed. s Incorrect operation due...
Service Manual - Page 7
... Kits Contents (some models including installation kit)
Top retainer bar
Foam-PE (Adhesive-Backed)
Foam strip
Foam-PE
(Plain-Back) (Adhesive-Backed)
Left frame curtain
Frame guide(2) Window locking bracket
Sill bracket(2)
Support bracket(2)
Right frame curtain
Type A (14)
Type B (7)
Type C (5)
Type D (2) Carriage Bolt (2) Lock Nut (4)
Service Manual 7 The top and bottom window...
Service Manual - Page 9
...Service Manual 9 Do not pull the window sash down behind the Top retainer bar until they meet.
Cabinet Installation
1. Be sure the cabinet slants outward.
Installation
Sill Bracket Carriage Bolt (M-Screw) Figure 5
Cabinet Track hole Support Bracket
Carriage bolt and lock nut Figure 6
Support...track hole.
The cabinet should be installed with approximately 1/2" of the window ...
Service Manual - Page 11
... If the room is a normal setting for the simple installation and service. • Reversible inlet grille. &#...Service Manual 11 The centrol position is too cool, turn the thermostat control clockwise. If the room is turned off or set... is exhausted.
First, pull down part A to the OPEN position.
HIGH HEAT ( ) : Permits heating with part B .
Operation
Operation
Features
•...
Service Manual - Page 13
... grille. 3. Mechanical parts
1. Pull the base...Fan Low Cool
High Cool
Figure 18
Service Manual 13 Open the inlet grille upward or downward. 2. Re-install the component by placing a 20,000...Before the following disassembly, power switch is set to section 1)
2. NOTICE Mark ∆ of inlet grille means opening direction.
2. Cabinet
1.
Re-install the components by referring to the removal...
Service Manual - Page 15
...Electrical parts
8. Remove the cover control and disconnect a wire housing
in place after servicing the...install the components by referring to the removal pro-
Discharge the refrigerant system using FreonTM
Recovery System. Remove the compressor. 7. Re-instill the components by referring to the removal procedure, above . Figure 23 Figure 24 Figure 25 Figure 26
Disassembly Service Manual...
Service Manual - Page 19
...will be sure to set for a while,...liquid refrigerant to valve C by means of the refrigeration cycle.
1. CAUTION: If high vacuum equipment is now pulling through the access valve which you installed as ...running , open slowly with Service valves.
5. Open valve C. Disassembly
NOTICE - Replacement of the manifold and entire system.
6. When replacing the refrigeration cycle, be put in ...
Service Manual - Page 21
...) CAPILLARY TUBE
OUTSIDE COOLING AIR FOR REFRIGERANT PASS THROUGH
LIQUID OUTLET HIGH PRESSURE VAPOR LIQUID PEFRIGERANT LOW PRESSURE VAPOR
Service Manual 21 Refer to Fig. 36 to follow the refrigeration cycle and the flow of the important components and their functions in the cooling cycle.
Troubleshooting guide
Piping system
Troubleshooting guide
CONDENSER COIL FAN
MOTOR
CAPILLARY TUBE...
Service Manual - Page 22
Repair gas leak.
Troubleshooting guide
Troubleshooting guide
In general, possible trouble is Ineffective Air Conditioning caused by a defect in the refrigeration circuit and improper application.
Dirty indoor coil (Heat exchanger)
Malfunction of fan
Clogged of air filter
Obstruction at air outlet
Stop of outdoor coil (heat exchanger) & the fan operation. Repair clogging in refrigeration ...
Service Manual - Page 23
... and fuse.
Irregular motor insulation ( ). Check of compressor capacitor. Defect of control switch setting. Check capacitor.
Replacement of fan motor
Irregular motor resistance ( )
Irregular motor insulation ( )
Replacement of power source.
Only fan fails to Start
Troubleshooting guide
Check of compressor (Motor damaged)
Regular but fails to start. Improper wiring. Improper...
Service Manual - Page 25
... (damaged)
Troubleshooting guide
REMEDY
Check voltage. Service Manual 25 Check wire locations. See the limits on overload. See the limits on the coil surface, head pressures will not run, but fan motor runs.
if restricted, clean carefully with a vacuum cleaner (do not damage fins) or brush. Check the wire connections, if loose, repair or replace the...
Service Manual - Page 27
Service Manual 27
Schematic diagram
ROOM-TH 1 2 3 4
PIPE-TH
CN-TH1
SMW250-04 1
2
2
4
R03H 0K
5V
R21H 12.1K
1%
5V
R02H
R01H
...
Q02G A101S
Q01G A101S
Option2 Option1 Pipe TH Room TH VAref VSS Osc out Osc in /Reset TEST
Schematic diagram
Electoinc control device
Model: M2400HR
SYNC MOTOR
S/V4WAY
FAN MOTOR
CAPACITOR FAN
C
HERM
MAIN POWER
COMP
12V
CN-SYNC 33 11
CN-4WAY 33 11
RY-SYNC...
Service Manual - Page 31
...
660 x 428 x 675
660 x 428 x 770
Service Manual 31
Product Specifications
Product Specifications
Table 1
ITEMS
MODELS
HBLG1800H R1804H
LWM1836B5S
M2400HR
REMARK
POWER SUPPLY
COOLING HEATING
CAPACITY (Btu/h)
INPUT
(W)
... (DB) 8.3 (DB)
19.4 (WB) 23.9 (WB) 15.6 (WB)
6.1 (WB)
REFRIGERANT (R-22) CHARGE(g)
710(25.0 OZ)
880(31.0 OZ)
EVAPORATOR CONDENSER
3 ROW 18 STACKS
3 ROW...
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