User Manual LG LT1216CER 12,000 BTU 115V Through-the-Wall Air Conditioner

• User Manual - (English, Spanish)

• Specification - (English)

Table of contents

• Before Operation
• Introduction
• Operating Instructions
• Maintenance and Service
• Troubleshooting

Before Operation

Preparing for Operation

1. Contact an installation specialist for installation.

2. Plug in the power plug properly.

3. Use a dedicated circuit.

4. Do not use an extension cord.

5. Do not start/stop operation by plugging/unplugging the power cord.

6. If the cord/plug is damaged, replace it with only an authorized replacement part.

Usage

1. Being exposed to direct airflow for an extended period of time could be hazardous to your health.

2. No correlation between fan usage and oxygen depletion.

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.

Cleaning and Maintenance

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 clean inside the air conditioner. Exposure to water can destroy the insulation, leading to possible electric shock.

3. When cleaning the unit, first make sure that the power and breaker are turned off. The fan rotates at a very high speed during operation. There is a possibility of injury if the unit’s power is accidentally triggered on while cleaning inner parts of the unit.

Service

For repair and maintenance, contact an Authorized Service Center. See the warranty page for details or call (800) 243-0000. Have your model number and serial number available. They should be written on page 2 of this manual.

Introduction

Features

WARNING This appliance should be installed in accordance with the National Electric Code.

CAUTION

We strongly recommend the removal of the old wall sleeve and the Installation of a new LGE Wall Sleeve.

If you decide to keep the existing wall sleeve, you have to redirect the louvers at the back of the wall sleeve illustration. The use of pliers is recommended. If you DO NOT redirect, you run the risk of poor performance or product failure. This is not covered under the terms of the LGE warranty.

• Pick a location which will allow the conditioned air to blow into the area you want. Good installation with special attention to the proper position of the unit will lessen the chance that service will be needed.

ITEMS IN INSTALLATION HARDWARE

You may not need all parts in the kit. Discard unused parts.

HOW TO INSTALL

1. Identify the existing wall sleeve before installing the unit from the listed below.

NOTICE All wall sleeves used to mount the new Air Conditioner must be in sound structural condition and have a rear grille that securely attaches to sleeve, or rear flange that serves as a stop for the Air Conditioner.

2. Remove the old airconditioner from existing wall sleeve.

3. Clean the interior of the existing sleeve. (Do not disturb seals.)

4. Wall sleeve must be securely fastened in wall ” before installing the air conditioner. Use the nails or screws through sleeve into wall, if needed. Repaint sleeve if needed.

5. Prepare the wall sleeve for installation of the unit. If you plan to use your existing wall sleeve, and it is not LGE, use procedure B or C below.

6. Install new unit into wall sleeve.

CAUTION

When installation is completed, the replacement unit MUST have a rearward slope as shown. To achieve 1/4" slope, remove the backing from the 11-13/16" shim strips and attach them as shown below in Fig. 3. Place the higher portion of the shim to the front of the rib on the base of the wall sleeve.

7. Remove the backing from the insulation strip 5 5/16 x 13/16 x 3/4 and attach that to the top of the cover as show below.

PROCEDURE A

1. If you are using the new sleeve (optionally supplied with your unit), skip to step 3. Otherwise, install the plastic grille from the kit. Cut the plastic grille to 25-1/2" wide and 15-1/4" high. Place the plastic grille to the inside of the wall sleeve at the rear flange.

2. Fasten the 4 washer screws to secure the grille to the wall sleeve. If you need plastic nuts to mount plastic grille to the inside of the wall sleeve, there are plastic nuts in the installation kit. The nuts are installed from the inside of the sleeve and are pressed into the square holes of the rear flanges.

3. Remove the backing from the vertical insulation strip 159/16 x 1³/8 x 1³/8 and attach that to the inside right of the sleeve as shown below. Remove the backing from the around insulation strip 67¹/8 x 1³/8 x 25/32 and attach that to the inside front of the sleeve as shown below.

4. Install the new unit into the wall sleeve.

5. To assemble trim, snap the tab of each piece into the slot of the other piece as shown below. Slide trim over the front of the air conditioner until trim is flush with sleeve as shown below.

CAUTION

• Air conditioners covered in this manual pose an excessive weight hazard. Two or more people are needed to move and install the unit.

To prevent injury or strain, use proper lifting and carrying techniques when moving unit.

• When handling the air conditioner, be careful to avoid cuts from sharp metal fins on front and rear coils.

• Make sure air conditioner does not fall during removal.

• If unit does not operate after installation check, to be sure the circuit interrupter has not been tripped. Refer to the Troubleshooting guide for reset procedure.

PROCEDURE B

1. Redirect the louvers at the back of the wall sleeve to 60° angle as shown in the Figure 8. The use of pliers is recommended.

2. If the wall sleeve already has a rear grille, skip to step 4. If the wall sleeve does not have a rear grille or louvered panel, install the plastic grille from the kit. Cut the plastic grille to 25-1/2" wide and 15-1/4" high. Place the plastic grille to the inside of the wall sleeve at the rear flange.

3. Fasten the 4 washer screws to secure the grille to the wall sleeve. If you need plastic nuts to mount plastic grille to the inside of the wall sleeve, there are plastic nuts in the installation kit. The nuts are installed from the inside of the sleeve and are pressed into the square holes of the rear flanges.

4. Remove the backing from the Vertical Insulation strip 159/16 x 13/8 x 1 3/8 and attach that to the inside right of the sleeve as shown below. Remove the backing from the Around Insulation strip 671/8 x 13/8 x 25/32 and attach that to the inside front of the sleeve as shown below.

If the depth of your existing wall sleeve is less than or equal to 18", skip to step 6. Otherwise, cut the baffles and the support blocks according to length A in the table below.

6. Remove the backing from the support blocks and attach them to the inside of the wall sleeve as shown In Figure 13. Slide the baffle into slots of the support blocks.

7. Install the new unit into the wall sleeve

8. Assemble trim as described in Step 5, Procedure A.

CAUTION

• Air conditioners covered in this manual pose an excessive weight hazard. Two or more people are needed to move and install the unit.
To prevent injury or strain, use proper lifting and carrying techniques when moving unit.

• When handling the air conditioner, be careful to avoid cuts from sharp metal fins on front and rear coils.

• Make sure air conditioner does not fall during removal.

• If unit does not operate after installation check, to be sure the circuit interrupter has not been tripped. Refer to the Troubleshooting guide for reset procedure.

PROCEDURE C

1. Redirect the louvers at the back of the wall sleeve to 60° angle as shown in the Figure 14. The use of pliers is recommended.

2. If the wall sleeve already has a rear grille, skip “ to step 4. If the wall sleeve does not have a rear grille or louvered panel, install the plastic grille from the kit. Cut the plastic grille to 26-1/2" wide and 15-1/2" high. Place the plastic grille to the inside of the wall sleeve at the rear flange.

3. Fasten the 4 washer screws to secure the grille to the wall sleeve. If you need plastic nuts to mount plastic grille to the inside of the wall sleeve, there are plastic nuts in the installation kit. The nuts are installed from the inside of the sleeve and are pressed into the square holes of the rear flanges.

4. Remove the backing from the horizontal insulation strip 263/4 X13/8 X 13/16 and attach that to the inside right of the sleeve as shown below. Remove the backing from the around insulation strip 5927/32 x 13/8 x 13/8 and attach that to the inside front of the sleeve as shown below.

5. If the depth of your existing sleeve is less than or equal to 18”, skip to step 7. Otherwise, cut the baffles and the support blocks according to Length A in the table below.

6. Remove the backing from the support blocks and attach them to the inside of the wall sleeve as shown in Figure 19. Slide the baffle into slots of the support blocks

7. To achieve rearward slope for unit draining, remove the backing from the 1113/16" shim strips and attach them as shown below in Figure 21. The higher portion of shim is to be placed in front of the rib on the base of wall sleeve.

8. Install the new unit into the wall sleeve.

9. Assemble trim as described in Step 6, Procedure A.

CAUTION

• Air conditioners covered in this manual pose an excessive weight hazard. Two or more people are needed to move and install the unit.
To prevent injury or strain, use proper lifting and carrying techniques when moving unit.

• When handling the air conditioner, be careful to avoid cuts from sharp metal fins on front and rear coils.

• Make sure air conditioner does not fall during removal.

• If unit does not operate after installation check, to be sure the circuit interrupter has not been tripped.
Refer to the Troubleshooting guide for reset procedure.

Operating Instructions

Remote Control Operations

1) POWER

Operation starts when this button is pressed and stops when you press the button again.

2) FAN SPEED SELECTOR

Use to set the fan speed to Low (F1), MED (F2), High (F3).

3) ON/OFF TIMER

Delay ON - when the air conditioner is off, it can be set to automatically turn on from 1 to 24 hours at its previous mode and fan settings.

Delay OFF- when the air conditioner is on, it can be set to automatically turn off from 1 to 24 hours.

4) OPERATION MODE SELECTOR

• Push the MODE button to rotate between Energy Saver / Cool / Fan / Dry.

Energy Saver- The fan stops when the compressor stops cooling. Approximately every 3 minutes the fan will turn on and check the room air temperature if cooling is needed.

Cool - Compressor runs and cools the room. Use the A / V and FAN buttons to set the desired temperature and circulation fan speed.

Fan - Fan circulates air but compressor does not run. Use the FAN button to set the desired fan speed.

Dry- Dry mode is used to remove humidity from the room without additional cooling. Once the set temperature is reached, the compressor and circulation fan turns off. Fan speed is pre-set and cannot be adjusted.

5) TEMPERATURE CONTROL

The thermostat monitors room temperature to maintain the desired temperature. The thermostat can be set between 60°F~86 °F (16 °C~30 °C).

6) REMOTE CONTROL SENSOR

7) CLEAN FILTER

‘Clean Filter' LED will light up to notify you that your filter needs to be cleaned. After cleaning the filter, press “Temp A V” together to turn off ‘Clean Filter’ light. (Filter reset must be done from unit control panel not remote control).

NOTICE This feature is reminder to clean the Air Filter (See Maintenance) for more efficient operation. The LED (light) will illuminate after 250 hours of operation.

AUTO RESTART

During operation in failure of electric power, the unit runs as previous setting operation.

ENERGY SAVER

The unit defaults to Energy Saver mode each time the unit is switched on except restoration after an electrical power outage and fan mode.

CAUTION

The remote controller will not function properly if strong light strikes the sensor of the air conditioner or if there are obstacles between the remote controller and the air conditioner.

Inserting the Remote Control Battery

1. Push out the cover on the back of the remote control with your thumb.

2. Pay attention to polarity and insert one new AAA 1.5 V battery.

3. Reattach the cover.

NOTICE

Do not ure rechargeable battery. Make sure that the battery is new.

Do not mix alkaline, standard (Carbon-zinc) or rechargeable (Nickel-cadmium) battery.

- In order to prevent discharge, remove the batteries from the remote control if the air conditioner is not going to be used for an extended period of time.

Keep the remote control away from extremely hot or humid places.

To maintain optimal operation of the remote control, the remote sensor should not be exposed to direct sunlight.

Ventilation

Air Direction

The direction of air can be controlled wherever you want by adjusting the horizontal louver and the vertical louver.

• HORIZONTAL AIR-DIRECTION CONTROL

The horizontal air direction is adjusted by moving vertical louver. The lever of vertical louver is located in the right and left side of the air discharge.

• VERTICAL AIR-DIRECTION CONTROL

The vertical air direction is adjusted by moving the horizontal louver.

Maintenance and Service

TURN THE AIR CONDITIONER OFF AND REMOVE THE PLUG FROM THE POWER OUTLET.

Air Filter Cleaning

The air filter should be checked at least twice a month to see if cleaning is necessary. Trapped particles in the filter will build up and block the airflow. This reduces the cooling capacity and also causes an accumulation of frost on the cooling coils.

If the filter becomes turn or damaged you should replace immediately. Replacement filters are available from your salesperson, dealer, and the authorized customer service centers.

1. Open the inlet grille downward by pulling out the top of the inlet grille.

2. Remove the air filter from the front grille assembly by pulling the air filter up slightly.

3. Wash the filter using lukewarm water below 40 °C (104 °F).

4. Gently shake the excess water from the filter completely.
Replace the filter.

How To Attach Front Grille To Cabinent

The front grille can be removed for cleaning or to check the model and serial numbers. For your safety, you should attach the front grille as the following procedures.

1. Pull down front grille from the cabinet top.

2. Push front grille's tips toward the cabinet in order to insert front grille’s tabs into the cabinet.

3. Open the inlet grille.

4. Tighten the screw through the front grille into the plate of control box.

5. Close inlet grille.

NOTICE

Guide the lever carefully through the grille as you push it in.

Common problems and solutions

Before Calling for Service

If you have problems with your air conditioner, read the following information and try to solve the problem. If you cannot find a solution, turn off the air conditioner and call 1-800-243-0000.

Air conditioner does not operate

1. Ensure that the air conditioner is plugged into an outlet of the proper voltage and amperage.

2. Check the fuse or circuit breaker.

3. Check whether the voltage is unusually high or low.

Air does not feel cold enough on the cooling setting

1. Ensure that the temperature settings are correct.

2. Check to see if the air filter is clogged with dust. If so, clean the filter.

3. Ensure that the air flow from the outside is not obstructed and that there is a clearance of over 20" between the back of the air conditioner and the wall or fence behind it.

4. Close all doors and windows and check for any source of heat in the room. Water drip from the rear of the unit
You see water dripping from the rear of the unit. Water may be collected in the base pan in highly humid conditions or on rainy days. This water overflows and drips from the rear of the unit.

Normal sound

Troubleshooting

The air conditioner may be operating abnormally when:

* If you see “CH” in the display, please call 1-800-243-0000.