LG LP073HD2A Owner'S Manual Download

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Ownerʼs Manual

ENGLISH

Maintenance and Service

Common Problems and Solutions

Troubleshooting

Normal Operation

Troubleshooting Tips save time and money!
Review the chart below first and you may not need to call for service.

• You may hear a pinging noise caused by water being picked up and thrown by the slinger fan against the

condenser on rainy days or when the humidity is high. This design feature helps remove moisture and
improve efficiency.

• You may hear the thermostat click when the compressor cycles on and off.
• Water will collect in the base pan during high humidity or on rainy days. The water may overflow and drip

from the outdoor side of the unit.

• The fan may run even when the compressor does not.

COMPLAINT

CAUSE

REMEDY

No power

Power supply cord

Rotary switch

Wire disconnected or
connection loose

Capacitor (Discharge
capacitor before testing)

Will not rotate

Revolves on overload

• Check voltage at outlet. Correct if none.

• Check voltage to rotary switch. If none, check power

supply cord. Replace cord if circuit is open.

• Check switch continuity. Refer to wiring diagram for

terminal identification. Replace switch if defective.

• Connect wire. Refer to wiring diagram for terminal

identification. Repair or replace loose terminal.

• Test capacitor.

Replace if not within ±10% of manufacturer's rating.
Replace if shorted, open, or damaged.

• Fan blade hitting shroud or cross flow fan hitting

scroll. Realign assembly.

• Units using slinger ring condenser fans must have

inch clearance to the base. If it is hitting the

base, shim up the bottom of the fan motor with
mounting screw(s).

• Check fan motor bearings; if motor shaft will not

rotate, replace the motor.

• Check voltage. See limits on this page. If not within

limits, call an electrician.

• Test capacitor.

Check bearings. Does the fan blade rotate freely?
If not, replace fan motor.

• Pay attention to any change from high speed to low

speed. If the speed does not change, replace the
motor.

Fan motor
will not run.

Fan motor runs
intermittently.

Summary of Contents for LP073HD2A

Page 1: ...0255J www lg com http www lghvac com OWNER S MANUAL AIR CONDITIONER Please read this manual carefully before operating your set and retain it for future reference TYPE Room Air Conditioner ENGLISH ESPAÑOL FRANÇAIS ...

Page 2: ...t of troubleshooting tips If you review our chart of Troubleshooting Tips first you may not need to call for service at all PRECAUTION Contact an authorized service technician for repair or maintenance of this unit Contact the installer for installation of this unit The air conditioner is not intended for use by young children or invalids without supervision Young children should be supervised to ...

Page 3: ...lity of injury or damage to properties only WARNING n Installation Don t do this Be sure to follow the instruction Donʼt use a power cord a plug or a loose socket which is damaged It may cause a fire or electrical shock Always plug into a grounded outlet It may cause a fire or electrical shock Do not modify or extend the power cord length It will cause electric shock or fire due to heat generation...

Page 4: ...wer switch when not using it for a long time Prevent accidental startup and the possibility of injury Unplug the unit if strange sounds odors or smoke come from it It could represent a fire hazed Do not open the suction inlet grill of the product during operation Otherwise it may electrical shock and failure If water enters the product turn off the the power switch of the main body of appliance Co...

Page 5: ...he window for ventilation before operating the unit Otherwise it may cause an explosion and a fire Never touch the metal parts of the unit when removing the filter They are sharp and may cause injury Install the product so that the noise or exhaust from the outdoor unit may not cause any damage to the neighbors Be considerate of your neighbor Be sure the product is level front to back and side to ...

Page 6: ...ies brush your teeth and see doctor Do not use the remote if the batteries have leaked The chemicals in batteries could cause burns or other health hazards Do not put a pet or house plant where it will be exposed to direct air flow It is not good to sit in the draft Do not block the inlet or outlet of air flow It may cause product failure Use a soft cloth to clean Do not use wax thinner or a stron...

Page 7: ...n deficiency ventilate the room when used together with stoves or other heating devices 3 Do not use this air conditioner for non specified special purposes e g preserving precision devices food pets plants and art objects Such usage could damage the items 1 Do not touch the metal parts of the unit when removing the filter Injuries can occur when handling sharp metal edges 2 Do not use water to cl...

Page 8: ...erformance in PTAC and PTHP Units For Installation purpose and better appearance Aluminium or Architectural grille can be applied in PTAC and PTHP Units Introduction Symbols Used in this Manual Features I N D O O R REAR GRILLE Aluminum Rear Grille EXPANDED METAL GRILLE For Superior Performance LG PTAC and PTHP test condition is recommended with expanded metal grille SLEEVE ASSEMBLY Including Alumi...

Page 9: ...ime delay fuse or 20 AMP Circuit breaker Use 30 AMP time delay fuse or 30 AMP Circuit breaker Never push the test button during operation Otherwise this plug can damaged This device contains chemicals including lead known to the State of California to cause cancer birth defects or other reproductive harm Wash hands after handling Do not remove modify or immerse this plug If this device trips the c...

Page 10: ...ge slot in the receptacle to assure a proper polarity connection Attaching the adapter ground terminal to the wall receptacle cover screw does not ground the appliance unless the cover screw is metal and not insulated and the wall receptacle is grounded through the house wiring The customer should have the circuit checked by a qualified electrician to make sure the receptacle is properly grounded ...

Page 11: ...ir conditioner To avoid vibration and noise make sure the unit is installed securely and firmly When installing the sleeve Front grille make certain there is nothing within 20 back front of sleeve front grille that would interfere with heat radiation and exhaust air flow Before installation Check the insulation on the inner side of the sleeve If there is no insulation place the insulation Check th...

Page 12: ...g the unit top front 3 Slide the unit into the wall sleeve and secure with 6 screws through the unit flange holes 4 Reinstall the front grille by hooking the top over the unit top then pushing it in at the bottom Failure to follow this caution may result in equipment damage or improper operation Blocking indoor curtain or bedclothes etc or outdoor discharge air could cause premature failure of uni...

Page 13: ...d fan operation HIGH HEAT Heating with the high speed fan operation VENTILATION The ventilation lever is located to the lower left side of the unit The ventilation lever must be in the CLOSE position in order to maintain the best cooling conditions When fresh air is necessary in the room set the ventilation lever to the OPEN position The damper is opened and outdoor air is drawn into the room This...

Page 14: ... TIMER SHUT OFF TIME You will usually use shut off time while you sleep If unit is running use Timer to set number of hours until shut off For your sleeping comfort once Time is set the Temperature setting will raise 2 F 1C after 30 minutes and once again after another 30 minutes Push Timer to cycle through the settings from 1 Hour 2 Hours 12 Hours maximum TEMPERATURE SETTING Use this button to au...

Page 15: ...ch the LED indicates by flashing number of times the error has been recorded against it The errors are the mentioned which is as follows Electrical Controls ON Normal OFF No power failed board Fault Codes CH 01 Indoor Air Thermistor Error CH 02 Indoor Coil Thermistor Error CH 03 Outdoor Air Thermistor Error PTHP Only CH 04 Outdoor Coil Thermistor Error PTHP Only CH 05 Mode Error CH 06 Set point Er...

Page 16: ...5 LOCAL 1 OFF 2 OFF 3 OFF 4 OFF 5 ON ON REMOTE OFF ON ON ON Remote Local Energy Saver Temperature Limit 1 Temperature Limit 2 Temperature Limit 3 PTAC PTHP UNIT TYPE LOCAL LOCAL 1 OFF OFF 2 OFF OFF 3 OFF OFF 4 OFF OFF 5 LOCAL 1 OFF 2 OFF 3 OFF 4 OFF 5 LOCAL LOCAL 1 OFF OFF 2 OFF OFF 3 OFF OFF 4 OFF OFF 5 LOCAL 1 OFF 2 OFF 3 OFF 4 OFF 5 OFF 6 OFF 7 LOCAL LOCAL 1 OFF OFF 2 OFF OFF 3 OFF OFF 4 OFF OF...

Page 17: ...ure Temperature Limit 1 Limit 2 Limit 3 Lowest Temp Highest Temp Lowest Temp Highest Temp Cooling Operation Heating Operation REMOVING THE FRONT GRILLE Additional controls are available after removing the front grille and option cover of control box To remove the front grille pull out the bottom of front grille and then lift up To replace the front grille place the tabs over the top of the unit an...

Page 18: ...ng without working compressor and heater When the front desk switch is OFF the unit can operate according to the setting of controls REMOTE WALL THERMOSTAT When the wires are connected the unit will be controlled by a remote wall thermostat The thermostat connections supply the 24 Volt AC When you install the digital electronic thermostat you must set it to 24 Volt AC See the installation Instruct...

Page 19: ...te Wall Thermostat REMOTE LOCAL CONTROL When remote local switch 1 is on it allow the unit to operate by the control of Remote Wall Thermostat The unit control by knobs are not available ENERGY SAVER The energy saver switch 2 is on This switch is set at continuous fan to provide continuous fan operation in cool or heat modes When the switch is off the continuous fan allows continuous circulation o...

Page 20: ... the top of the unit through reversible 2 position discharge grille louvers The unit is shipped from the factory with the discharge grille louvers at an angle of 40 off vertical In an alternate position the louvers will be at an angle of 15 off vertical To adjust the air direction remove the front grille Remove the 4 screws that fasten the discharge grille to the front grille Flip the discharge gr...

Page 21: ... completely Replace the filter Before cleaning the vent filter disconnect power to the unit by unplugging the power cord at the wall outlet or subbase or disconnect power at the fuse box or circuit breaker If unit is operated with vent door closed the vent filter does not need to be cleaned 1 Remove the cabinet front as described in Front Removal 2 Remove the six screws securing the chassis to the...

Page 22: ... manner as above The base pan may overflow due to high humidity To drain the excess water remove the drain cap from the back of the unit The compressor and fan motor are hermetically sealed permanently lubricated and require no additional oiling The cabinet front and discharge air grille can be cleaned with a mild soap or detergent Under no circumstances should hydrocarbon based cleaners e g aceto...

Page 23: ...on overload Check voltage at outlet Correct if none Check voltage to rotary switch If none check power supply cord Replace cord if circuit is open Check switch continuity Refer to wiring diagram for terminal identification Replace switch if defective Connect wire Refer to wiring diagram for terminal identification Repair or replace loose terminal Test capacitor Replace if not within 10 of manufact...

Page 24: ...to wiring diagram for identification and replace Check wire locations If not per wiring diagram correct Check for continuity refer to the wiring diagram for terminal identification Replace the switch if circuit is open Check the position of knob If not at the coldest setting advance the knob to this setting and restart unit Check continuity of the thermostat Replace thermostat if circuit is open C...

Page 25: ...quired Remove the cabinet inspect the interior surface of the condenser if restricted clean carefully with a vacuum cleaner do not damage fins or brush Clean the interior base before reassembling If condenser fins are closed over a large area on the coil surface head pressures will increase causing the compressor to cycle Straighten the fins or replace the coil Test capacitor Check the terminals I...

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