Koldfront WTC12000W User manual

Wall Air Conditioner
and Heater
Owner’s Manual
For more information on other great EdgeStar products on the web, go to http://www.edgestar.com
WTC12000W

Important Safety Information
Improper handling can cause serious damage to the appliance and/or to the
user. Please read the following safety information.
Warning: The water produced by
the wall AC is not potable or
suitable for drinking.
Do not drink the water drained
from the unit as it contains
contaminates and could make
you sick.
Electrical Safety
Make sure your hands are dry and not wet before operating the unit.
Do not wet the front housing or control panel.
Do not directly spray water on this Air Conditioner.
Do not pull the unit by the cord.
Always turn the unit off and unplug it from the socket when cleaning.
Unplug the unit if it is not going to be used for a long period of time.
Do not operate the unit with a damaged or loose plug and / or socket.
Use only the correct power supply with appropriate amperage.
If the power cord is damaged, it must be replaced by the
manufacturer, a service agent, or qualified technician.
Do not turn the unit off or on by inserting or pulling the power plug.
Do not modify the power cord length or share the outlet with another
appliance.
Do not use this unit with an extension cord and/or adapter plug.
Do not use this unit near flammable gases/combustibles or close
proximity to heating appliances.
During operation do not remove any part of the outside casing.
General Safety
Do not let people or pets sit or set an object directly in front of air flow.
If a strange sound, smell, or smoke comes from the unit, turn it off and
review the troubleshooting page of this manual.
Stop operation and unplug unit in the event of a severe storm.
To ensure proper air flow and intake, make sure the air vents are not
obstructed.
See instructions for cleaning air filters and how often cleaning should
occur.
Do not use strong detergents when cleaning.
Children should be supervised when operating this unit.
Do not allow children to play with the controls or drop any objects into
the air outlets or vents.
Do not place objects or let any person sit on top of the unit.
Route the power cord carefully to avoid a tripping hazard.
This unit is intended for domestic home use only. Do not use the wall
air conditioner for commercial or industrial use. Any other use may
invalidate the warranty.
Use caution when unpacking and installing the unit as there may be
some sharp edges.

Koldfront Through the Wall Air Conditioner ii
Operation of Safety Plug
Your air conditioner is supplied with a Leakage-Current Detection and
Interruption (LCDI) safety plug. This device provides protection to reduce the risk
of fire due to arcing faults in the power supply cord. Before using your air
conditioner, follow the instructions below to ensure that the LCDI plug is working
properly:
1. Plug the power cord to a grounded outlet.
2. Press the TEST button on the LCDI plug. This should trip the plug and cut the
power to the air conditioner. If the plug does not trip and you are able to turn on
the unit, please contact EdgeStar support.
DO NOT USE YOUR AIR CONDITIONER IF THE TEST FAILS.
3. Press the RESET button to start using your air conditioner.
NOTES:
Always make sure the “Reset” button is pushed in for proper
operation.
The power supply cord with LCDI plug must be replaced if it fails to
reset.
Do not use the TEST and RESET buttons as an ON/OFF switch.
Electrical products should not be disposed of with household waste.
Please contact your local recycling center for more information on how to
recycle electronic waste.

iii
Table of Contents
INTRODUCTION ...................................................................................................1
PARTS IDENTIFICATION.....................................................................................2
SIDE VIEW...........................................................................................................2
FRONT VIEW........................................................................................................2
PREPARATIONS FOR INSTALLATION ..............................................................3
WALL SLEEVE PREPARATIONS........................................................................4
ASSEMBLING THE KOLDFRONT SLEEVE...................................................................4
INSTALLATION INSTRUCTIONS ........................................................................5
INSTALLING CABINET INTO WALL...........................................................................5
INSTALLING THE GRILLE........................................................................................5
DIRECT UNIT MOUNTING ......................................................................................6
COMPLETING INSTALLATION..................................................................................6
CONTROL PANEL OPERATIONS.......................................................................7
TO TURN UNIT ON:...............................................................................................7
TO CHANGE TEMPERATURE:.................................................................................7
TO ADJUST FAN SPEEDS:.....................................................................................7
TO SELECT OPERATING MODE: ............................................................................7
To operate on Auto Feature:.........................................................................7
To operate on Fan Only: ...............................................................................8
To operate on Dry mode: ..............................................................................8
TO USE ENERGY SAVER FEATURE:.......................................................................8
TO USE THE SLEEP FEATURE:..............................................................................8
TO USE TIMER (AUTO START/STOP)FEATURE:.....................................................8
TO CHECK FILTER FEATURE:................................................................................9
DIGITAL DISPLAY:.................................................................................................9
Error Codes...................................................................................................9
ADDITIONAL TIPS: ..............................................................................................10
REMOTE OPERATIONS.....................................................................................11
MAINTENANCE ..................................................................................................12
AIR FILTER CLEANING ........................................................................................12
CABINET CLEANING............................................................................................12
NORMAL SOUNDS.............................................................................................13
ENERGY SAVING GUIDE...................................................................................13
TROUBLESHOOTING ........................................................................................14
SPECIFICATIONS...............................................................................................16
EDGESTAR LIMITED WARRANTY ...................................................................17

1
Introduction
Thank you for purchasing this Koldfront by EdgeStar air conditioner. We are glad
you chose us. We believe that your purchase of this product opens a relationship
between you and EdgeStar. We will provide the customer support needed to
nurture that relationship.
This manual contains important information regarding the proper installation, use
and maintenance of your air conditioner. Following this manual will ensure that
your product will work at its peak performance and efficiency.
Please save the original product packaging in case you need to safely transport
your air conditioner.
For Your Records:
Please write down the model number and serial number
below for future reference. Both numbers are located on the
ratings label on the back of your unit and are needed to
obtain warranty service. You may also want to staple your
receipt to this manual as it is the proof of your purchase, and
is also needed for service under your warranty.
Model Number:
Serial Number:
Date of Purchase:
To better serve you, please do the following before contacting customer service:
If you received a damaged product, immediately contact the dealer that
sold you the product.
Read and follow this instruction manual carefully to help you install, use
and maintain your air conditioner.
Read the troubleshooting section of this manual as it will help you
diagnose and solve common issues.
Visit us on the web at http://www.edgestar.com for product guides,
additional troubleshooting resources and up-to-date information. If you
need service, our friendly customer service representatives are available
via email at serv[email protected] or by telephone at 1 (866) 319-
5473.

Koldfront Through the Wall Air Conditioner 2
Parts Identification
Side View
Front View
Control Panel
CAUTION: Make sure the
drain plug is firmly installed
before using the unit to
prevent leaking.
Louver
Center Handles
Control Panel
Louver
Air Outlet
Front Air Intake Panel

3
Preparations for Installation
NOTE: To avoid risk of injury and/or product/property damage,
please take the following precautions:
- Two or more people are needed to properly handle and install.
- Use proper lifting and carrying techniques.
- Wearing protective gloves will help to avoid injury from sharp
edges.
Before you begin, make sure you have all the parts necessary for
installation.
Name
Spec.
Qty
Tapered Spacer Blocks
17” Long
2
Centering/Support Blocks
4 ½” x 3 ½“ x 1 ½“
4
Plastic Divider
⅛“x 4 ½“ x 14 ½“
2
Stuffer Seal
1” x 1 ½“ x 84”
1
Seal
1” x 1 ½” x 25”
3
Seal
1” x 1 ½“ x 14
2
Seal
1” x ⅜” x 25”
3
Seal
1” x ⅜” x 14”
2
Seal
1” x ¾” x 14”
2
Trim frame (side legs)
2
Trim Frame (top & bottom legs)
2
Ground Wire (green)
1
Toothed Washer for grounding screw
2
Grounding Screw
1
Grille (plastic)
1
Grille Aluminum
1
Nuts (plastic)
4
Screw Washer
4
Screw
4
Tools Needed:
Flat Screwdriver
Phillips Screwdriver
Tape Measure
Level
Drill
NOTE: You may need to
contact your electrician if
your room’s circuit is not
able to power your unit.

Koldfront Through the Wall Air Conditioner 4
Wall Sleeve Preparations
Assembling the Koldfront Sleeve
1. Using the grounding screw and toothed washer, drill a 1/8”
clearance hole (for the grounding screw) in a clear area
about 3 inches back from the front edge of the sleeve
through the left side.
2. Pull the loose end of the ground wire (green) out of the front
of the sleeve.
3. Temporarily bend it down and around the lower edge of the
sleeve.
4. This ground wire will later be attached to the frame of the Air
Conditioner once it is installed.
CAUTION: When installation is complete, the replacement unit
MUST have a rearward slope as shown in the image to the left.

5
Installation Instructions
Installing the Cabinet into the Wall
Follow the steps listed below to install the cabinet into the wall
1. Remove existing rear grille as shown on Page 4 of this manual
and replace with provided louvered rear panel.
2. Attach (1) 1”x ⅜” x 25”long seal in the center at the top of the
sleeve. Remove the backing paper and press into position.
3. Attach (2) 1” x ⅜”x 14”seals to the left and right sides of the
sleeve.
4. Attach (2) 1”x ¾” x 14”long seals vertically 4 ½” from the left
side of the sleeve .Attach the other 1”x ¾” x 14”long seal 4”from
the right side of the sleeve.
5. Center unit and gently slide unit into sleeve.
6. Before sliding all-the-way back, remove 2nd screw from front on
left side of unit.
7. Remove the plastic washer from the screw.
8. Screw and attach the other end of the ground wire to the unit as
shown in picture. Make sure that the toothed washer is against the
cabinet.
9. Slide the unit completely to the rear to ensure a good seal,
making sure the ground wire does not become tangled.
Installing the Grille
This units increased performance characteristics result from having
two rear air intakes. It is very important that these installation
instructions are followed so your unit can operate a maximum
efficiency. If this is an existing sleeve, and there is an existing rear
grille, it needs to be replaced by one that has been shipped with the
unit in the accessory kit.
NOTE: For increased efficiency, utilize the provided louvered rear
panel.
1. Remove the existing grille.
2. Place the grille included with the new air conditioner towards the
rear of the sleeve.
3. Mark through the hole positions.
4. Drill through the sleeves flanges with a ⅛” drill bit.
5. Attached the new grille with self-threading screws and washers.
6. It is VERY IMPORTANT that the grille is placed exactly as shown
below.
7. Most decorative exterior grilles may be left in place as long as
the proper interior air direction grille is installed.
NOTE: You may need to
drill holes in flange of
existing sleeve to match
new rear grille.

Koldfront Through the Wall Air Conditioner 6
Direct Unit Mounting
The previous directions are the preferable way to mount the new
rear grill. The unit’s performance is slightly better and the possibility
of draughts is reduced. As a last resort, direct mounting of the grille
to the unit can be considered.
NOTE: The grille must be installed prior to inserting the unit into the
sleeve.
1. Attach the (2) seal pieces (1” x ⅜” x 14”) as shown below.
2. Position the grille over the rear of the unit, making sure that:
a. The double set of screw holes are at the bottom.
b. The fins of the grill are pointed away from the unit.
3. Align the top of the grille with the top of the unit. The overhang
on each side is equal.
4. If the unit has not been pre-drilled (some models), carefully drill
four ⅛” holes through the grille and into the side flange of the unit
approximately 1 ½” to 2”from the top and bottom as the images
below. (Be careful not to drill into the copper heat exchanger coils.)
5. Install (4) #8 self- tapping screws to affix the grille to the unit.
6. Insert the unit into the sleeve.
Completing Installation
1. Install the 1”x1 ½” x 84”long stuffer-seal between the wall-
sleeve and the unit. A flat-bladed screwdriver or putty knife is
recommended.
2. Assemble the trim frame by inserting top and bottom pieces
into side pieces and snapping into place.
3. Pull cord through trim frame then slide over unit until flush
with wall.
Grille screw
locations
1/8” Hole, Grille,
and Flange
#8 Screw
Seal
Seal

7
Control Panel Operations
Using the Control Panel
To Turn Unit on:
Press On/Off Button. NOTE- The Energy Saver feature will
automatically turn on in “Cool”, “Dry”, and “Auto”mode.
To Change Temperature:
Press or hold either Up or Down button until desired
temperature is seen on the digital display. This temperature will be
automatically maintained anywhere between 62 °F (17°C) and 86°F
(30°C). If you want the display to read the actual room
temperature, see “To Operate on Fan only” section.
To Adjust Fan Speeds:
To select the speed of the fan press Fan Speed in four steps-
Auto, Low, Medium, or High. Each time the button is pressed the
fan speed mode is shifted. NOTE- During "Dry mode" the fan
speed is controlled at Low automatically.
To Select Operating Mode:
To choose operating mode press Mode . Each time you press
the button a mode is selected in a sequence that goes from Auto,
Cool, Dry, Heat to Fan. The indicator light beside will be illuminated
and remain on once the mode is selected.
To operate on Auto Feature:
When you set the unit to “Auto” mode it will automatically
select cooling, heating, or fan only operation depending on
the temperature selected and the current room temperature.
Once the temperature you selected is achieved the unit will
automatically maintain the room temperature.
On/Off
Energy Saver
Timer
Mode
Check Filter
Fan Speed
Sleep
Temp/Timer Up
Temp/Timer Down

Koldfront Through the Wall Air Conditioner 8
In this mode the fan speed cannot be adjusted. It will start
automatically at a speed according to the actual room
temperature.
To operate on Fan Only:
Use this function only when cooling is not desired, such as
for room circulation or to exhaust air (remember to open the
vent). You can choose any speed you prefer.
During this function the display will show the actual room
temperature as in the cooling mode.
In Fan only mode, the temperature is not adjusted.
To operate on Dry mode:
In this mode, the air conditioner will operate as a
dehumidifier. Because the conditioned space is a closed or
sealed are some degree of cooling will continue.
To Use Energy Saver Feature:
To start the Energy saver, press . This feature is available on
“Cool”, “Dry”, and “Auto”. The fan will continue to run for 3 minutes
after the compressor shuts off. The fan then cycles on for 2
minutes at 10 minute intervals until the room temperature is above
the set temperature at which the compressor turns back on and
cooling starts.
To Use the Sleep Feature:
At the time of sleep press the sleep button . In this mode the
selected temperature will increase (cooling) or decrease (heating)
by 2°F (2°C) 30 minutes after the mode is selected. The
temperature will then increase (cooling) or decrease (heating) by
another 2°F (2°C) after an additional 30 minutes. This new
temperature will be maintained for 6 hours before it returns to the
originally selected temperature. This ends the Sleep mode and the
unit will continue to operate as originally programmed. The Sleep
Mode program can be cancelled at any time during operation by
again pressing the Sleep button.
To Use Timer (Auto Start/Stop) Feature:
When the unit is on or off, press the Timer button the
“Timer On” indicator light illuminates. It indicates the Auto
Start program is initiated.
To switch to off press the Timer button again and the
“Timer Off” indicator light illuminates. It indicates the Auto
Stop program is initiated.

9
Press or hold the Up or Down to change the Auto
Time by ½ hour increments up to 10 hours or 1 hour
increments up to 24 hours. The control will count down the
time remaining until start.
The selected time will register in 5 seconds and the system
will automatically revert back to display the previous
temperature setting or room temperature when the unit is on.
(NOTE-when the unit is off there is no display)
To Check Filter Feature:
This feature is a reminder to clean the Air Filter for more efficient
operation. The LED light will illuminate after 250 hours of
operation. To reset after cleaning the filter press the Check
Filter button and the light will go off.
Digital Display:
Displays the set temperature in “C” or “F” and the Auto-Timer
settings. While on Fan only mode it shows the room temperature.
Error Codes
AS- Room temperature sensor error
Unplug the unit and plug back in.
If error repeats call for service.
NOTE- In Fan only mode it will display
“LO” or “HI”.
- Evaporator temperature sensor error
Unplug the unit and plug back in.
If error repeats, call for service.
HS-Electric Heating sensor error
Unplug the unit and plug back in.
If error repeats, call for service.

Koldfront Through the Wall Air Conditioner 10
Air Directional Louvers:
The 4-way air directional louvers allow you to direct the air flow Up,
Down, Left, and Right throughout the room as needed. To adjust
the air directional louvers side to side use the center handles as
you move side to side.
Additional Tips:
The “Cool” mode has an automatic 3 minute timed delay start if the
unit is turned off and on quickly. This prevents overheating of the
compressor and possible circuit breaker tripping. The fan will
continue to run during this time.
The control is capable of displaying the temperature in degrees
Fahrenheit or degrees Celsius. To convert from one to the other,
press and hold the Up and Down Temp/Timer buttons at the same
time for 3 seconds

11
Remote Operations
ON/OFF button-
Select to turn unit
off and on.
TEMP UP button- Push
this button to increase the
temperature setting in
1°C/1°F increments to
30°C/86°F.
TIMER button –Push
this button to activate
the “Auto Start” or
“Auto Stop” program
MODE
SPEED
MODE button- Press
this button to selected
desired operation
mode from AUTO,
COOL, DRY, HEAT,
and FAN.
TEMP DOWN button-
Use to increase either
temperature of timer
depending on function.
activate the “Auto
ONE TOUCH button-
When pushed the system
will automatically shift to
COOL operation with auto
fan speed, the setting
temperature is 26°C/80°F.
And the timer setting
program will be cancelled.
MODE button- Press
this button to select
desired operation
mode from AUTO,
COOL, DRY, HEAT,
and FAN.
TEMP DOWN button –
Use to increase either
temperature of timer
depending on function.
FAN SPEED button –Use
to select the fan speed in
four steps. AUTO, LOW,
MED, and HIGH.
SLEEP button –Press this
button to activate the Sleep
mode. This function is
available on COOL, HEAT
or AUTO mode only.
TIMER
SPEED
ONE
TOUCH
SLEEP
MODE

Koldfront Through the Wall Air Conditioner 12
Maintenance
Clean the air conditioner and filters regularly to maximize
performance and efficiency, and prolong the unit’s life. Be sure to
always unplug the air conditioner from the power outlet before
cleaning.
Air Filter Cleaning
The air filter should be checked at least once a month to see if
cleaning is necessary. Trapped particles in the filter can build up
and could cause an accumulation of frost on the cooling coils.
1. Push the vent handle to the “vent closed” position.
2. Open the front panel.
3. Grasp the filter, pull up and out.
4. Wash the filter using liquid dishwashing detergent and
warm water. Rinse filter thoroughly.
5. Gently shake excess water from the filter. Be sure the
filter is thoroughly dry before replacing.
6. You also have the option of cleaning filter with vacuum.
Warning: Never use hot water over 40C (104F) to clean the
air filter. Never attempt to operate the unit without the air
filter.
Cabinet Cleaning
Be sure to unplug the air conditioner to prevent shock or
fire hazard. The cabinet and front may be dusted with an
oil-free cloth or washed with a cloth dampened in a
solution of warm water and mild dishwashing detergent.
Rinse thoroughly and wipe dry.
Never use harsh cleaners, wax, or polish on the cabinet
front.
Be sure to wring excess water from the cloth before
wiping around the controls. Excess water in or around
the controls may cause damage to the air conditioner.
NOTE: Winter Storage-
If you plan to store the
air conditioner during
the winter, remove it
carefully from the wall
according to the
installation instructions.
Make sure to clean the
unit thoroughly and
cover it with plastic or
return it to the original
carton.

13
Normal Sounds
High Pitched Chatter- High efficiency compressors may have
a high pitched chatter during the cooling cycle.
Sound of Rushing Air- At the front of the unit, you may hear
the sound of rushing air being moved by the fan.
Gurgle/Hiss- Gurgling or Hissing noise may be heard due to
refrigerant passing through evaporator during normal
operation.
Vibration- Unit may vibrate and make noise because of poor
wall construction or incorrect installation.
Pinging or Switching- Droplets of water hitting condenser
during normal operation may cause these sounds.
Energy Saving Guide
Read and follow the guide below to get the best performance and
efficiency from your air conditioner:
Do not cover the air outlet (exhaust) while in use.
Use the timer to operate the unit before it is needed. For
example, set the timer to turn on the unit in cooling mode for 3
or more hours to cool the room before you arrive. You may want
to operate the unit all day if you live in a warmer climate.
Minimize the heat sources (direct sunlight, computers, servers,
people, etc.) in the room.
Close all windows and doors.
Use the unit in a contained room. For example, a room with four
windows and a ceiling, instead of a partitioned studio, or
warehouse.
Make sure the unit is secure with no gaps where air can escape.
Minimize the amount of humidity in the room. For example, run
the unit as a dehumidifier.
To prolong the compressor's life, please wait at least 3 minutes
before turning the unit back on after shutting it off.
Inspect and keep the air filters clean by cleaning regularly.
Perform routine maintenance.

Koldfront Through the Wall Air Conditioner 14
Troubleshooting
Follow the troubleshooting guide below to resolve common issues.
Issue
Possible Cause
Solution
My air conditioner is not
functioning at all
Wall plug
disconnected
Make sure the unit is
plugged in.
LCDI power cord is
tripped
Press the Reset button
on the LCDI cord.
House fuse blown or
circuit breaker tripped.
Replace fuse with time
delay type or reset circuit
breaker.
Control panel is off
Turn control panel ON
and set to desired
setting.
Insufficient power
Move the unit to another
outlet. Check your circuit
breaker. (Refer to the
rating label on the back
of the unit to determine
the Amperage draw).
Air from unit does not
feel cold enough
Room temperature
below 17°C (62°F)
Cooling may not occur
until room temperature
rises above 17°C (62°F).
Temperature sensing
element touching cold
coil, located behind air
filter
Straighten tube away
from coil.
Compressor shut-off
by changing modes
Wait approximately 3
minutes and listen for
compressor to restart
when set in the COOL
mode.
Air conditioner is cooling
but room is too warm,
ice is forming on cooling
coil behind decorative
front.
Outdoor temperature
below 18°C (64°F)
To defrost the coil, set
FAN ONLY mode.
Air filter may be dirty
Clean Filter. Refer to
maintenance section. To
defrost set to FAN ONLY
mode.
Thermostat set too
cold for night-time
cooling.
To defrost the coil, set to
FAN ONLY mode. Then,
set temperature to higher
setting.
Air conditioner is cooling
but room is too warm,
NO ice is forming on
cooling coil behind
decorative front.
Dirty air filter, air
restricted
Clean air filter. Refer to
maintenance section.
Temperature is set too
High
Set temperature to lower
setting.
Air directional louvers
positioned improperly
Position louvers for better
air distribution.
Front of unit is blocked
by drapes, blinds,
furniture, etc., restricts
air distribution
Clear blockage in front of
unit.

15
Issue
Possible Cause
Solution
Air conditioner is cooling
but room is too warm, NO
ice is forming on cooling
coil behind decorative
front
Open doors, windows,
etc.
Open = cold air
escapes. Close doors,
windows, etc.
Unit recently turned on
in hot room
Allow additional time to
remove “stored heat”
from windows, ceiling,
floor and furniture.
Air conditioner turns on
and off rapidly
Dirty air filter, air
restricted
Clean air filter.
Outside temperature
extremely hot
Set FAN speed to a
higher setting to bring
air past cooling coils
more frequently.
Outside temperature
extremely hot
Air movement sound,
this is normal
Set FAN speed to a
higher setting to bring
air past cooling coils
more frequently.
If too loud, set to a
slower FAN setting.
Wall vibration, poor
installation
Refer to installation
instructions or check
with installer.
Water dripping INSIDE
when unit is cooling
Improper installation
Tilt air conditioner
slightly to the outside
to allow water
drainage.
Water dripping OUTSIDE
when unit is cooling
Unit removing large
quantity of moisture
from humid room
This is normal during
excessively humid
days.
Remote not sensing
Remote control not
located within range
Place remote control
with 20 feet and 180
degrees radius of the
front of the unit.
Remote control signal
obstructed
Remove obstruction.
Room too cold
Set temperature too
low
Increase set
temperature.

Koldfront Through the Wall Air Conditioner 16
Specifications
Description of product
Wall Air Conditioner
Model
WTC12000W
Voltage/Frequency
220 V / 60 HZ
Input Power
1330W / 3450W
Current
6.0A / 15.0A
Color
White
Coolant
R410A /17.64
Timer
24 Hour
Dimensions
W x D x H
24.2” x 20.3” x 14.5”
Weight
72.6 Lbs.