International Refrigeration Products WA415YREB User manual

WINDOW
AIR CONDITIONER & HEAT PUMP
USER MANUAL
950-0222-revD 7/22/2015
FOR MODELS:
COOLING BTU/h
HEATING BTU/h
WA415YREB
15,100
N/A
WA418ZREB
18,500
N/A
WA418ZRB
18,500
N/A
WA425ZREB
25,000
N/A
WA428ZRB
28,000
N/A
WH418ZRB
18,500
16,000
WH425ZRB
25,000
16,000
WHP418ZRB
17,700
Elec. Heater – 11,200
Heat Pump – 16,000

Page 1
CONTENTS
INSTALLATION REQUIREMENTS ............................................................................................................................ 2
Tools and Parts .................................................................................................................................................. 2
Location Requirements ...................................................................................................................................... 3
Electrical Requirements ..................................................................................................................................... 4
INSTALLATION INSTRUCTIONS .............................................................................................................................. 5
Remove packaging materials ............................................................................................................................ 5
Remove Chassis ................................................................................................................................................ 5
Prepare the Cabinet ........................................................................................................................................... 6
Install the Cabinet into the Window ................................................................................................................... 6
Install the Support Bracket ................................................................................................................................ 7
Extend the Accordion Panels ............................................................................................................................. 8
Install the Window Lock and Sash Seal ............................................................................................................ 8
Install the Chassis into the Cabinet ................................................................................................................... 8
AIR CONDITIONER CONTROLS (Panel) ................................................................................................................. 9
Air Conditioner Controls .................................................................................................................................... 9
REMOTE CONTROL ............................................................................................................................................... 14
Function buttons .............................................................................................................................................. 15
Remote Control Operation ............................................................................................................................... 16
IMPORTANT INFORMATION .................................................................................................................................. 19
3 minutes delay ................................................................................................................................................ 19
Select ℉ or ℃ ................................................................................................................................................. 19
Fresh Air Vent Control...................................................................................................................................... 19
Air Directional Louvers..................................................................................................................................... 19
Normal Sounds ................................................................................................................................................ 20
AIR CONDITIONER CARE ...................................................................................................................................... 21
Cleaning the Air Filter ...................................................................................................................................... 21
Cleaning the Front Panel ................................................................................................................................. 21
Repairing Paint Damage of Outside Case ...................................................................................................... 21
Annual Maintenance ........................................................................................................................................ 21
TROUBLESHOOTING ............................................................................................................................................. 22
SPECIFICATIONS ................................................................................................................................................... 24
WARRANTY ............................................................................................................................................................. 26
FOREWORD
 Inspect unit for shipping damage, mishandling and accessories before installing.
 The appearance of the units that you purchase may be slightly different from the ones described in this manual,
but will not affect proper operations and usage.
 Please read carefully the sections corresponding to the specific model you have, and keep the manual in a safe
place for reference.
 The refrigerant used in your window air conditioner is an environmentally safe and friendly.
ATTENTION
 Do not modify or otherwise defeat the plug.
 The appliance shall be installed and operated in accordance with National Electrical Code regulations.
 Do not operate your unit in the cooling mode when the outside temperature is below 64°F . Do not operate your
unit in the heating mode when outside temperature is above 109°F.
 If the supply cord is damaged, it must be replaced by a qualified person in order to avoid a fire hazard.
 All electrical repairs and connections must be performed by a licensed electrician.
 Air conditioner with electrical heater not to be used as primary heat source.
IMPORTANT SAFETY INSTRUCTIONS
WARNING: To reduce the risk of fire, electrical shock or injury when using your air conditioner, follow these basic
precautions:
 Plug into a grounded 3 prong outlet.
 Do not remove ground prong.
 Do not use an adapter.
 Do not operate this unit if the outdoor
temperature is below 64°F or above 109°F
 Do not use an extension cord.
 Unplug Air Conditioner before servicing.
 Use two or more people to move and install air
conditioner.

Page 2
INSTALLATION REQUIREMENTS
Tools and Parts
Gather the required tools and parts before starting installation.
Read and follow the instructions provided with any tools listed here.
Parts Supplied
Hardware
(Packed with the unit)
7/16” Locking screw and Flat
washer for window panels
2
ea.
3/4”(or 1/2”) inch Long Hex-head
Screw
4
Safety Lock
1
1/2” Long Screw and Locknut
4
ea.
3/4” Long Flat Head Bolt and
Locknut
2
ea.
Sill Angle Bracket
2
Long Hex-head Locking Screw
for top angle, side retainer 5/16”
Long
10
Foam Insert
2
Window Sash Seal Foam
1
Tools Required
 Flat-blade and Phillips Screwdrivers
 Socket wrenches
 Pencil
 Ruler or tape measure
 Level
 Adjustable wrench or pliers
SAFTY LOCK AND
3/4” (or 1/2”) LONG
HEX HEAD SCREW

Page 3
Location Requirements
IMPORTANT: Observe all governing codes and
ordinances.
Check the location where air conditioner will be
installed. Proper installation is your responsibility.
Make sure you have everything necessary for
correct installation.
The location should provide:
 Grounded electrical outlet within 5 ft of
where the power cord exits the air
conditioner.
NOTE: Do not use an extension cord.
 Free movement of air in room to be cooled.
 A large enough opening for the air
conditioner.
 Adequate wall support for weight of air
conditioner. Air conditioner weights up to
139 lbs.
NOTE: Cabinet louvers & rear of the air
conditioner must not be obstructed. Air must be
able to pass freely through the cabinet louvers.
The rear of air conditioner must be outdoors. Not
inside a building or garage.
Window Requirements:
These instructions are for
a standard double hung
window. You will need to
modify them for other
types of windows.
The air conditioner can be
installed without the
accordion panel if needed
to fit in a narrow window.
See Window Opening
dimensions.
All supporting parts must be secured to firm
wood, masonry or metal.
Follow the dimension in TABLE -1.
Models
Dim. A -
Opening Width
Dim. B - Min
Vertical Opening
WA415YREB
WA418ZREB
WA418ZRB
WH418ZRB
26.5”-40.5”
18.5”
WA425ZREB
WA428ZRB
WH425ZRB
WHP418ZRB
31” – 42”
19.5”
TABLE -1
Thru the Wall Installation Requirements:
The air conditioner can be used in a wall, providing
the vents are not blocked.
Table -2 provides the maximum wall thickness
dimension from the outer case to side air louvers.
Models
Front Cover to
Side Vent
Unit Depth
WA415YREB
WA418ZREB
WA418ZRB
WH418ZRB
8”
25.4”
WA425ZREB
WA428ZRB
WH425ZRB
WHP418ZRB
10”
26.5”
TABLE -2
Storm Window Requirements:
A storm window frame will not allow the air
conditioner to tilt properly which in turn will keep
it from draining properly. To adjust for this,
attach a board or piece of wood to the sill. The
board or wood piece should have a depth of at
least 1 1/2”. Make sure the board or piece of
wood is approximately 1/2” higher than the storm
window frame. This will allow the air conditioner
to tilt enough for proper drainage. See below.

Page 4
Electrical Requirements
Power Supply
Cord
Wiring Requirements
NEMA 5-15P
 115-Volt (103.5 min to
126.5 max.)
 0 to 13amps
 15-amp time-delay fuse or
circuit breaker
 Use on single outlet circuit
only.
NEMA 6-15P
 230-Volt (198 min to 253
max.)
 0 to 12 amps
 15-amp time-delay fuse or
circuit breaker
 Use on single outlet circuit
only.
NEMA 6-20P
 208/230-Volt (198 min to
253 max.)
 0 to 16 amps
 20-amp time-delay fuse or
circuit breaker
 Use on single outlet circuit
only.
NEMA 6-30P
 230-Volt (198 min to 253
max.)
 0 to 24 amps
 25-amp time-delay fuse or
circuit breaker
 Use on single outlet circuit
only.
TABLE - 2
Recommended Grounding Method
This air conditioner must be grounded. This air
conditioner is equipped with a power supply cord
having a grounded 3 prong plug. To minimize
possible shock hazard, the cord must be
plugged into a mating, grounded 3 prong outlet,
grounded in accordance with all local and
national codes. If a mating outlet is not available,
it is the customer’s responsibility to have a
properly grounded 3 prong outlet installed by a
qualified electrical installer.
It is the customer’s responsibility:
 To contact a qualified electrical installer.
 To assure that the electrical installation
is adequate and in conformance with
National Electrical Code, ANSI/NFPA
70- latest edition, and all local codes
and ordinances.
Power Supply Cord
NOTE: Your unit’s device may differ from the
ones shown.
This room air conditioner is equipped with a
power supply cord required by UL. This power
supply cord contains state-of-the-art electronics
that sense leakage current. If he cord is crushed,
the electronics detect leakage current and power
will be disconnected in a fraction of a second.
To Test your power supply cord:
1. Plug power supply cord into a grounded 3
prong outlet.
2. Press RESET
3. Press TEST (listen for click, Reset button
will trip and pop out).
4. Press and release RESET (listen for click;
Reset button will latch and remain in). The
power supply cord is ready for operation.
NOTES:
 The reset button must be pushed in for
proper operation.
 The power supply cord must be replaced if it
fails to trip when the test button is pressed
or fails to reset.
 Do not use the power supply cord as an
off/on switch. The power supply cord is
designed as a protective device.
 A damaged power supply cord must be
replaced with a new power supply cord
obtained from the product manufacturer and
must not be repaired.
 The power supply cord contains no user
serviceable parts. Opening the tamper-
resistant case voids all warranty and
performance claims.

Page 5
INSTALLATION INSTRUCTIONS
Remove packaging materials
 Remove and dispose of/recycle packaging
materials. Remove tape and glue residue
from surfaces before turning on the air
conditioner. Rub a small amount of liquid
dish soap over the adhesive with your
fingers. Wipe with warm water and dry.
 Do not use sharp instruments, rubbing
alcohol, flammable fluids, or abrasive
cleaners to remove tape or glue. These
products can damage the surface of your air
conditioner.
 Handle air conditioner gently.
Remove Chassis
1. Pull down the front panel and remove the filter.
See Fig.1.
2. Lift the front panel upwards to remove and
place to the side.
3. Locate the four front screws and remove.
These screws will need to be re-installed prior to
mounting the air conditioner. See Fig.2
4. After removing the screws, gently pull away
the front panel from the air conditioner cabinet.
You may push metal cabinet side to release the
plastic tabs on each side of front panel. See Fig
3A & 3B.
5. Disconnect the connector plug of the display
panel from the unit. See Fig. 4.
5. Remove the two screws on the top of
the chassis and also on the side by base
if installed. See Fig.5.
6. Hold the cabinet while pulling on the
base of the chassis and carefully
remove the chassis from the cabinet.
7. Add two foam inserts (included) to holes
in top of cabinet where shipping screws
were removed from. See Fig.6.
8. Your unit may come with internal
packaging. This packaging must be
removed prior to installing the air
conditioner back into the cabinet. See
Fig.7.

Page 6
Prepare the Cabinet
1. Place the air conditioner on a hard flat surface.
2. Locate the foam gasket (included) and top
angle rail (included).
3. Attach the foam gasket to the top angle rail.
NOTE: Your units may have the seal strip already
attached to the top mounting rail. If applicable,
skip this step.
4. Install top angle and side retainers to cabinet
as shown below.
5. Slide “I” section of window filler panel into side
retainer on the side of cabinet. Do both sides.
6. Insert top and bottom legs of window filler
panel frame into channel in the top angle and
bottom rail. Do both sides.
7. Insert washer head locking 7/16” screws (2) in
to holes in top leg of filler panel frame (See
Extend the Accordion Panels on Page 8.) Do not
totally tighten. Screws will be tightened in later
steps.
Install the Cabinet into the Window
NOTE:
 Handle air conditioner gently.
 Be sure your air conditioner does not fall out
of the opening during installation or removal.
 The place where the power cord exits the air
conditioner should be no more than 5 ft from
a grounded 3 prong outlet.
 Do not block the louvers on the front panel.
 Do not block the louvers on the outside of
the air conditioner.
Prepare the Window
Open window and mark center of the window sill.
Install the Cabinet
1. Center the air conditioner in window. Check
that lower rail of air conditioner is behind and
against back side of window sill. Maintain a firm
hold on the air conditioner cabinet. Lower
window sash to hold cabinet in place.
Window Sill
Bottom Rail

Page 7
2. Measure the distance between the right-hand
side of the cabinet and the inside of the window
channel.
3. Repeat for the left side. Adjust the cabinet
until the distance on each side is the same.
4. Attach the screws to the window sill. (Refer to
below installation Fig. for the model you bought).
Pre-drill holes if needed.
5. Add the bottom rail seal over the screws.
Install the Support Bracket
1. Hold each support bracket flush against the
outside of the window sill. Tighten each bracket
to the bottom of the cabinet as shown below.
Mark the brackets at top lever of the window sill
and then remove.
2. Assemble the sill angle brackets to the
support brackets at the marked position as
shown below. Hand tighten, but not all the way
for any changes that may need to be made later
during installation.
3. Install the support brackets (with sill angle
brackets attached) to the bottom of the cabinet
as shown below.
4. Tighten all 6 bolts securely.
NOTE: Make sure the air conditioner is tilted back
about 1 1/4” to 1 5/8” (tilted about 3º to 4º
downward to the outside). After proper
installation, condensate should not drain from
the overflow drain hole during normal use,
correct the slope otherwise. See below.
1/2” long
screws and
locknuts

Page 8
Extend the Accordion Panels
1. Carefully raise the window to expose the
accordion panel and panel frame. Loosen the
locking screws so the accordion panels slide
easily.
2. Extend each panel to completely fill the width of
the window. Tighten the locking screws when the
panels are fully extended.
3. Close window behind top angle.
Install the Window Lock and Sash Seal
1. Trim the sash seal to fit the width of the window.
Insert the sash seal into space between the upper
and lower sashes.
2. Attach the right angle safety lock as shown below.
Install the Chassis into the Cabinet
1. Team lift (two people) the air conditioner chassis
and carefully slide it into the cabinet. Let the front
of the air conditioner hang out approximately 6”.
DO NOT PUSH ON THE CONTROLS OR FINNED
COILS.
2. Be sure the chassis is firmly seated in the back
of the cabinet.
3. Insert all screws removed during window
installation and reattach the front face plate, front
panel, and the air filter. Use the “REMOVE
CHASSIS” instructions on Page 5 and figures for
reference.
3/4” or 1/2” Long
Hex-head Screw

Page 9
AIR CONDITIONER CONTROLS (Panel)
Before you begin, thoroughly familiarize yourself with the control panel and remote as shown below and all its
functions then follow the symbol for the functions you desire. The air conditioner can be controlled by the remote or the
control panel.
UNIT CONTROL PANEL
NOTE: HEAT MODE FOR WINDOW WITH ELECTRIC HEATER OR HEAT PUMP UNIT ONLY
Air Conditioner Controls
TO TURN UNIT ON/OFF:
Press button to turn unit ON or OFF

Page 10
TO CHANGE TEMPERATURE SETTING:
TO ADJUST FAN SPEED:
Change Temperature:
 Press or hold either Up (▲) or
Down (▼) button until the desired
temperature is seen on the
display.
 Temperature range is 62°F (17°C)
to 86°F (30°C) in 1°F (1°C)
increments.
 Display indicates set temperature
in all modes except "FAN ONLY"
mode.
Select Fan Speed
 Used to select the Fan Speed in
four steps
o Auto
o Low
o Med.
o High
 Each time the button is pressed,
the fan speed mode is shifted.
 If the DRY mode is selected the
fan will operate in Low speed.

Page 11
TO SELECT THE OPERATING MODE:
TO USE THE ENERGY SAVER MODE:
Select Operating Mode：
 To choose operating mode, press the Mode button.
Each time you press the button, a mode is selected
in a sequence that goes from Auto, Cool, Dry, Heat
and Fan. The indicator light beside the Mode button
will be illuminated.
To Operate Cool/Heat Mode:
 Press the MODE button to select Cool/Heat mode,
temperature could be set between 62 ºF and 86 ºF
in 1 ºF increments
 In cooling mode, the FAN-AUTO function can be
selected, automatically changing the fan speed as
the room temperature gets closer to set point.
To Operate Auto Mode:
 When the "AUTO" function is selected, it will
automatically select the cool, heat or fan. The
temperature can be changed as desired. The
temperature range is 62°F to 86°F.
 The air conditioner will control room temperature
automatically around the temperature set point.
 In the "AUTO" mode, the fan speed is not
selectable. The fan will change speeds according to
the room temperature and the set point.
 If "AUTO" mode is not comfortable, select another
mode.
To Operate Fan Only Mode:
 Use this function only when cooling is not desired
such as for room air circulation or to exhaust stale
air. Open the outside vent for maximum circulation.
The outside vent should be closed for all other
modes (Cooling, Heating, Auto and Dry). Fan speed
is selectable (Auto, High, Med, and Low).
 The Fan only function will display the actual room
temperature.
 In other modes the set point is displayed.
 In Fan only mode, the temperature is not adjustable.
To Operate Dry Mode:
 In this mode, the air conditioner will operate in the
form of a dehumidifier. Since the conditioned space
is a closed or sealed area, some degree of cooling
will continue.
Energy Saver Mode:
 This function is available in COOL/DRY/AUTO (only
Auto Cool and Auto Fan available) mode. 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. If the room
temperature goes above the set point, the
compressor turns on and begins to cool.
 Press the temperature UP/DOWN buttons to select
the desired set temperature. The temperature range
is 62°F to 86°F.
 The fan speed is selectable in the Energy Saver
mode.

Page 12
SLEEP MODE:
TIMER: AUTO START/STOP FEATURE:
SLEEP MODE:
The temperature setting will increase (cooling mode) /
decrease (heating mode) by 2°F in 30 minutes. In another
30 minutes the temperature setting will increase (cooling
mode) / decrease (heating mode) by another 2°F.
This temperature will be maintained for 6 hours and then
the temperature will return to the original set point
temperature.
To cancel the sleep mode, press the "Sleep" button.
TIMER ON / TIMER OFF:
 Press the Timer button to select "On or Off". After the
time is selected the unit will either turn on or off after
the timer has timed out.
Example:
 If the unit is operating and "Off' is selected the unit will
turn off after the selected time times out.
 If the unit is off and "On" is selected the unit will turn
on after the selected times out.
 Press or hold the UP or DOWN button to change the
Auto time by 0.5 hour increments up to 10 hours, then
at 1 hour increments up to 24 hours. The control will
count down the time remaining until unit starts or
stops.
 The selected time will update in 5 seconds. The
system will automatically revert back to display the
previous temperature setting or room temperature
when the unit is on. (When the unit is off, there is no
display.)
 Turning the unit ON or OFF at any time or adjusting
the timer setting to 0.0 will cancel the Auto Start/Stop
timed program.

Page 13
CHECK FILTER FEATURE:
DISPLAYS:
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 turn off.
DISPLAY INDICATIONS:
Displays the following possibilities:
* °F or °C
* Timer setting
* Set temperature (all modes other than fan).
* Room temperature in the fan mode
* Error codes
Error codes:
1) AS - Room temperature sensor error. Unplug the
unit and plug it back in. If error repeats, call for
service.
2) LO or HI – (Fan Only Mode) Room temperature
sensor error. Unplug the unit and plug it back in. If
error repeats, call for service.
3) “·” (see picture to the left) - Evaporator
temperature sensor error. Unplug the unit and plug
it back in. If error repeats, call for service.
4) HS -Electric heating sensor error. Unplug the unit
and plug it back in. If error repeats, call for service.

Page 14
REMOTE CONTROL
Handling and location of the remote controller
Use the remote controller at a distance of 16 ft., or less, from the appliance. Point it towards the receiver on the air conditioner.
Communication is confirmed with a beep.
CAUTIONS
 The air conditioner will not operate if curtains, doors or other materials block the signal from the remote control to the air
conditioner.
 Avoid
o Liquids
o Direct Sunlight
o Extreme Temperatures
 If the infrared signal receiver on the indoor unit is exposed to direct sunlight, the air conditioner may not function properly.
 If other electrical appliances react to the remote controller, either move these appliances or consult your local dealer.
Replacing Batteries
The remote control is powered by two AAA alkaline batteries housed in the back of the remote. (Do not use rechargeable batteries)
(1) Remove the cover by pressing down and sliding back.
(2) Remove the old batteries and insert the new batteries, observing polarity.
(3) Replace the battery cover.
NOTE: When the batteries are removed, the remote control erases all settings. After inserting new batteries, the remote controller
settings must be selected.
Remote Control Specifications
Rated Voltage
3.0V
Lowest Voltage of CPU
Emitting Signal
2.4V
Signal Receiving Range
16 ft
Environment
23-140︒F
1) The remote control is a sending device only. The display on the control panel of the air
conditioner will indicate changes made by the remote control.
2) The illustrations in this manual are for explanation purposes only. The actual shape of remote
controller may be slightly different.
3) An audible sound will be heard when the buttons are pressed to change settings or modes.

Page 15
Function buttons
ON/OFF button
Operation starts when this
button is pressed and
stops when it is pressed
again.
TEMP / TIME UP
button
Push this button to
increase the temperature
setting in 1 ºF increments.
Temperature range is 62
ºF to 86 ºF.
Adjust the time setting.
TIMER button
Push this button to
activate the “Auto Start”
or “Auto Stop” program.
ONE TOUCH button
Push this button; the system will
automatically shift to COOL
Operation with auto fan speed, the
setting temperature is 80 ºF . And
the timer setting program will be
cancelled.
SLEEP button
Press this button to
activate the Sleep mode.
This function is available
on COOL, HEAT or AUTO
mode only.
FAN button
Used to select the fan
speed in four steps: Auto,
Low, Med and High.
TEMP / TIME DOWN
button
Push this button to decrease
the indoor temperature setting
in 1 ºF increments.
Temperature range is 62 ºF to
86 ºF.
Adjust the time setting.
MODE button
Press this button to select
the desired operation mode
from AUTO, COOL, DRY,
HEAT (For Heat Model
Only) and FAN.

Page 16
Remote Control Operation
Press to turn unit ON/OFF
Auto operation
1. Press the ON/OFF button to start the air conditioner.
2. Press the MODE button to select Auto. The panel
"AUTO" LED will illuminate when selected.
3. Press the TEMP UP/DOWN button to set the
desired temperature. The temperature range is 62 ºF -
86 ºF in 1 ºF increments.
NOTE:
1. In the Auto mode the air conditioner will select
Cooling, Heating or Fan depending upon set point
vs. room temperature.
2. In the Auto mode, you cannot switch the fan
speed. It is automatically controlled.
3. If the Auto mode is not comfortable select another
mode for manual operation.
ONE TOUCH button
4. Push this button; the system will automatically shift
to COOL Operation with auto fan speed, the setting
temperature is 80°F . And the timer setting program will
be cancelled.
Cooling/Heating/Fan operation
1. Press the ON/OFF button to start the air conditioner.
2. Press the MODE button to select Cool, Heat or Fan
mode. The panel "Cool" “Heat” or “Fan” LED will illuminate
when selected.
3. Press the TEMP UP/DOWN button to set the desired
temperature. The temperature can be set within the range of
62 ºF - 86 ºF in 1 ºF increments.
4. If cooling is selected, the FAN-AUTO function can be
selected, automatically changing the fan speed as the room
temperature gets closer to set point. The panel “Fan-Auto"
LED will illuminate when selected.
5. Press the FAN button to select the fan speed in four steps
- Auto, Low, Med, or High.
6. In the FAN mode, actual room temperature is displayed in
the control panel. If the Fan-Auto is selected, the
temperature is automatically set to 75 °F. The fan speed will
decrease as the room temperature approaches set point.

Page 17
Dehumidifying (DRY) operation
1. Press the ON/OFF button to start the air conditioner.
2. Press the MODE button to select DRY. The panel "DRY"
LED will illuminate when selected.
3. Press the TEMP UP/DOWN button to set the desired
temperature. The temperature can be set within a range of
62 ºF - 86 ºF in 1 ºF increments.
NOTE:
In the Dehumidifying mode, you cannot change the fan speed. It is
controlled in low speed.
SLEEP operation
Press this button to activate the SLEEP mode. This function is
available on COOL, HEAT or AUTO mode only and maintains
the most comfortable temperature for you. The panel "SLEEP"
LED will illuminate when selected.
In this mode the selected temperature will increase (cooling
mode) / decrease (heating mode) by 2 ºF in 30 minutes after the
mode is selected. The temperature will then increase (cooling
mode) / decrease (heating mode) by another 2 ºF 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 may be cancelled by pressing the
SLEEP button again during operation.

Page 18
Timer operation
Press the TIMER button to initiate the Auto-start and Auto-stop
setting program of the unit. The time can be set for 0~24 hours.
To set the Auto-start/stop time.
1. Press the TIMER button, when the TIMER ON indicator
displayed on the LED window of the air conditioner, it indicates
the Auto Start setting program is initiated. When the TIMER OFF
indicator displayed on the LED window of the air conditioner, it
indicates the Auto Stop setting program is initiated.
2. Press or hold the Up(▲) or Down(▼) to change the Auto
time by 0.5 hour increments up to 10 hours, then at 1 hour
increments up to 24 hours. The control will count down the time
remaining until starts/stops.
3. The selected time will register in 5 seconds and the air
conditioner will automatically revert back to display the previous
temperature setting.
4. Turning the unit ON or OFF at any time will cancel the Auto
start/stop function.
5. To cancel the TIMER setting, push the TIMER button and
press or hold the Up (▲) or Down (▼) until 0 hour is displayed
on the LCD window of the air conditioner
Timer operation (Combined)
(Setting both ON and OFF timers simultaneously)
AUTO STOP-> AUTO START
(On-> Stop ->Start operation)
This feature is useful when you want to stop the air conditioner after you go to
bed, and start it again in the morning when you wake up or when you return
home.
Example:
To stop the air conditioner 2 hours after setting and start it again 10 hours after
setting.
1. Press the TIMER button until the TIMER OFF indicator is displayed on the
LED display of the air conditioner.
2. Use the UP/DOWN button to display “2.0” on the LED display.
3. Press the TIMER button again to display the TIMER OFF
4. Use the UP/DOWN button to display “10”.
5. Wait for 5 seconds until the previous display revert back to the LED window.
AUTO START -> AUTO STOP
(Off ->Start->Stop operation)
This feature is useful when you want to start the air conditioner before you wake
up and stop it after you leave the house.
Example:
To start the air conditioner 5 hours after setting, and stopping it 8 hours later.
1. Press the TIMER button until the TIMER ON indicator is displayed.
2. Use the UP/DOWN button to display “5.0”.
3. Press the TIMER button again to display the TIMER OFF.
4. Use the UP/DOWN button to display “8.0”.
5. Wait for 5 seconds until the previous display reverts back to the LED
window.

Page 19
IMPORTANT INFORMATION
3 minutes delay
The Cool circuit has an automatic 3 minute time delayed 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.
Select ℉ or ℃
The unit is shipped in degree F as the default indication.
The control is capable of displaying temperature in degrees Fahrenheit or degrees Celsius. To convert from one to the
other, press and hold the UP and DOWN temperature (Timer) buttons on control panel simultaneously for 3 seconds.
Fresh Air Vent Control
The Fresh Air Vent allows the air conditioner to:
1. Recirculate inside air - Vent Closed (See Fig. A)
2. Draw fresh air into the room- Vent Open (see Fig. B)
3. Exchange air from the room and draws fresh air into the room - Vent and Exhaust Open (see Fig. C)
4. To change vent operation (position) pull lever to desired opening.
Air Directional Louvers
The louvers will allow you to direct the air flow Up or
Down (on some models) and Left or Right throughout the
room as needed. Pivot horizontal louvers until the desired
Up/Down direction is obtained.
Move the Levers from side to side until the desired
Left/Right direction is obtained.