Arctic King MWFUK-15CRN1-BCK8 User manual

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WINDOW AIR CONDITIONER
Operator's Manual
Model/Modèle :
MWFUK-15CRN1-BCK8
36059778

1
18
19
25
2. OPERATING INSTRUCTIONS
REMOTE CONTROL OPERATING INSTRUCTIONS
3. 9
5
4.
5.
6.
7.
20
Read this Manual
disabled
You will find inside many helpful tips on how to use and maintain your air conditioner
properly. Just a little preventive care on your part can save you a great deal of time
and money over the life of your air conditioner. You'll find many answers to common
problems in the Troubleshooting chart. Reviewing this chart first may prevent you
from calling for service.

must be followed. Incorrect operation due to failure to following the instructions may cause
harm or damage. The severity level is classified as follows:
This symbol indicates a risk of death or serious injury.
This symbol indicates a risk of injury or damage to property.
Unplug the unit in the
presence of strange sounds,
smell, or smoke.
It may cause an explosion, fire, and burns. It may cause failure of the unit and electric shock.
2
Always ensure proper
grounding.
grounding
A damaged unit may cause fire
and electric shock.
place
Plug in the power plug
properly.
Do not modify the power
cord's length or share the
outlet with other appliance.
Do not operate with wet hand
or in a damp environment.
Do not direct airflow at
room occupants only.
This may be harmful to your
health.
a circuit
It may cause failure of the unit or
electrical shock.
Ventilate the room before operating the air
conditioner if there is a gas leak from
another appliance.
Do not disassemble or modify the unit.

any other
purpose than air cooling.
3
Ventilate the room properly
when used together with a
stove, etc..
An oxygen deficiency may occur.
When the unit is to be
cleaned, switch it off and
turn off the circuit breaker.
Do not clean the unit when the
power is ON as it may cause fire,
electric shock, and even an injury.
This could harm the pet or plant.
Stop operating the unit and close
the window during storms or
hurricanes.
Disconnect the power cord by
pulling it out by the plug.
Operation with windows opened
may cause indoor wetting and
soaking of household furniture.
It may cause failure of the unit or
fire.
Do not place obstacles around
the air inlet or inside the air
outlet.
It may cause failure of the unit or
an accident.
A damaged bracket may cause the
unit to overturn.
Operation without filters may cause
failure of the unit.
Do not use abrasive detergents,
such as wax or thinner, but use
a soft cloth.
Do not place heavy objects on
the power cord and ensure that
the cord is not compressed.
Do not drink water drained from
the air conditioner.
The appearance may deteriorate
due to discoloration or surface
scratches of the product.
It may cause fire or electric shock.
If water enters the unit, turn the unit off at the power outlet and
switch off the circuit breaker. Isolate the supply by unplugging
the power cord and contact a qualified service technician.

For Your Safety
The power supply with this
air conditioner contains a current
detection device designed to reduce
the risk of fire.
Please refer to the section
"Operating the Current Device" for
details. In the event that the power
cord is damaged, it cannot be
repaired-it must be replaced with a
cord from the product manufacturer.
NEVER cut, remove or
bypass the grounding
prong of the plug.
The power cord contains a current device that detects damage to the power cord. To test your power cord,
perform the following:
1. Plug in the air conditioner.
2. The power supply's plug has TWO buttons. By pressing the TEST button,
you will hear a click as the RESET button pops out.
3. Press the RESET button again to hear another click sound as the button
engages.
4. The power cord is now supplying electricity to the unit. (On some models,
the plug is equipped with a light indicating that the power is ON.)
proper
P
Safety Precautions
Operating the Current Device
selected.Ths information can be found on the serial plate, which
-
installing the unit.
Power supply cord
with three-prong grounding plug
and current detection device

Operating Instructions
Normal Sounds
/64-109°F
/62-90°F
5
The unit may vibrate and make noise
becaure of poof wall or winodw
construction, or incorrect instlalation.
NOTE: Performance may be reduced outside of these operating temperatures.

remote control.
The unit will initiate automatically the Energy Saver function under COOL, DRY, and AUTO (AUTO
COOL and AUTO FAN only) modes.
Unit Control Panel
Operating Instructions
1
2
3
5
4
69
7
8
1)
2)
3)
4)
6
refer to the unit controls
Press or hold either UP ( ) or DOWN ( ) button until the desired temperature is displayed. This
temperature will be automatically maintained anywhere between 62ºF and 86ºF
(17ºC - 30ºC). If
you want the display to read the actual room temperature, refer to "Operating on the Fan Only"
section.
You may select the fan speed in four steps: AUTO, LOW ( ), MED ( ), or HIGH ( ).
Each button press shifts the fan speed mode. For some models, the fan speed cannot be adjusted
under HEAT mode. On DRY mode, the fan speed is automatically controlled at Low.
-
cooling starts.

●To choose the operating mode, press the MODE button. At each button press, a mode is selected in a
sequence that goes from AUTO, COOL, DRY and FAN. The indicator light illuminate and remain
ON once the mode is selected.
operate on AUTO mode:
DRY Mode:
Operating Instructions
SLEEP
5)
6)
7)
- When the unit is ON or OFF, first press the TIMER button. The TIMER ON indicator light will illuminate,
indicating that the AUTO-START program has been initiated.
- When the TIMER ON time is displayed, press the TIMER button again. The TIMER OFF indicator light
will illuminate, indicating that the AUTO-STOP program has been initiated.
- Press or hold the UP or DOWN button to change the AUTO time in 0.5-hour increments, up to 10 hours,
then in 1-hour increments up to 24 hours. The control will count down the remaining time 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. (When the unit is OFF, there is
no display.)
- Turning the unit ON or OFF at anytime or adjusting the timer setting to 0.0 will cancel the AUTO/ START/
STOP timed program.
The unit will initiate automatically the Energy Saver function under Cool, Dry, Auto( Auto
-Cooling and Auto-Fan) modes.
8)
7
2ºF/1ºC
2ºF/1ºC
● When you set the air conditioner in AUTO mode, it will automatically select COOLING or FAN ONLY
operation depending on the temperature you have selected and the room temperature.
● The air conditioner will automatically control the room temperature around the temperature point set
by you.
● In this mode, the fan speed cannot be adjusted, it starts automatically at a speed according to the
room temperature.
FAN ONLY mode:
In FAN ONLY mode, the temperature cannot be adjusted.
In this mode, the air conditioner will operate as a dehumidifier. Since the conditioned space is a closed
area, there will still be some degree of cooling.
SLEEP
SLEEP
air filter
CHECK
FILTER

AS- Room temperature sensor error. Unplug the unit and
plug it back in. If error repeats, call for service.
NOTE: The FAN ONLY mode will display LO or HI.
● -Evaporator temperature sensor error. Unplug the unit
and plug it back in. If error repeats, call for service.
NOTE: "●" is displayed as shown in the left picture.
HS - Electric heating sensor error. Unplug the unit and
plug it back in. If error repeats, call for service.
Operating Instructions
● The COOL circuit has an automatic 3-minute starting time 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 can display the temperature in Fahrenheit or 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.
The fresh air vent allows the air conditioner to:
1. Recirculate air indoors- 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-way Air Directional Louvers
Air Direction (4 Ways)
Additional
9)
8
Displays
AUTO TIMER setting. While on FAN ONLY
Features you Should Know
AND

Window sash seal
Safety lock
and 3/4" long
hex head screw
Top angle
Foam gasket
Washer head
locking screw
Frame
assembly
(left)
Side retainer
Seal-bottom rail
to unit
3/4" long flat
head bolt
Locknut
1/2" long
screw and
locknuts Frame
assembly
(right)
Window
support
bracket
Sill
angle bracket
Storm window frame or
other obstruction Storm window
frame or
other obstruction
Board thickness
as required,
along entire
stool. Fasten
with two nails
or screws.
Installation Instructions
9
25K
18 5/8
" (473 mm) 17 5/8 " (455 mm)
26 1/2
" (673 mm) 23 5/8 " (600 mm)
19 1/2
" (495 mm) 18 1/2 " (470 mm)
31
" (787 mm) 28 " (710 mm)
42
" (1067 mm) 40 " (1029 mm)
15K,18K
Please read ALL the instructions before installing. Two people are recommended to install this product. If
a new electrical outlet is required, have the outlet installed by a qualified electrician before installing the unit.
1. Check window opening size. The mounting parts provided
with this air conditioner are designed for installation in a
wooden sill double-hung window. The standard parts are for
window dimensions listed above. Open the sash to a minimum
of 19" (483 mm) (see Fig. D).
2. Check the window condition. All the wood parts of window
must be in good shape and able to firmly hold the needed
screws. If not, make repairs before installing the unit.
3. Check your storm window. If your storm window frame
does not allow the required clearance, correct by adding a
piece of wood as shown in Fig. E, or by removing the storm
window when the room air conditioner is being installed.
4. Check for anything that could block the air flow. Check
the outside area of the window for things such as shrubs,
trees or awnings. Be sure that the indoor furniture, drapes,
or blinds will not obstruct the airflow.
5. Check the available electrical service. The power supply
must be the same as specified on the unit serial nameplate.
The power cord is 48" long. Make sure there is an outlet near
the unit.
6. Carefully unpack the air conditioner. Remove all the
packing material. Protect the floor or carpet from damage.
Two people are recommended to move and install the unit.

( )
Installation Instructions
10
R1 hardware 2
(10 *3/4 *1/12 )
Weather stripping 5
Tools Required (Not Included)
-long flat
head bolt and
locknut
Sill angle
bracket

Installation Instructions
Window Mounting
1
4. Push metal cabinet side to release the plastic tabs
on each side of the front panel (see Fig.3).
5. Gently lift the front panel off the unit (see Fig.4).
6. Disconnect the connector plug of the display
panel from the unit and place the front panel to
one side (see Fig. 5).
2Install the top angle and
side bracket.
3
Plastic
frame
Window Filler
panel
Side retainer
Fig.9
5 16 long
hex-head
/
Front grille
Fig.1 Fig.2
Fig.3
Fig.4
Front panel
Fig.5
Shipping
screws
Fig.6 Fig.7
Fig.8
11
Remove the chassis
1. Pull down the front grill and remove the filter
(see Fig.1).
2. Lift the front grill upwards and place to one side.
3. Locate the four front screws and remove.
These screws will be needed to reinstall the
front panel (see Fig.2).
7. Remove the shipping screws from the top of the unit
and on the side by the base, if installed (see Fig.6).
8. Hold the cabinet while pulling on the base pan handle
and carefully remove the unit.
9. Add two foam inserts to the hole on top of the cabinet
where the shipping screws were removed (see Fig.7).
1. Attach the foam gasket to the top angle above
the holes as shown in Fig.6.
2. Install the top angel and side retainers to the
cabinet as shown in Fig.8 (10 screws).
Assemble the window filler
panels.
1. Place the cabinet on the floor, a bench, or a table.
2. Slide the "I" section of the window filler panel into
the side retainer on the side of the cabinet (see
Fig.9 & Fig.10).
Repeat on the other side.
Top
view
Air conditioner
cabinet Plastic
frame
Window
filler
panel
Locking
screw
hole

Place the cabinet in the window.
angle
3. Shift the cabinet to the left or right (as needed) to
line up the centre of the cabinet on the marked
centre line on the stool.
4. Fasten the cabinet to the window stool with 2
screws into the holes (pilot holes may be pre-drilled).
5. Add the bottom rail seal over the screws to the
window stool.
Install the support bracket.
1. Hold each support bracket flush against outside
the sill and tight to the bottom of the cabinet
(see Fig. 14). Mark the brackets at the top level
of the sill, then remove.
2. Assemble the sill angle bracket to the support
brackets at the marked position (see Fig. 15).
Hand tighten to allow for any change later.
Installation Instructions
12
3. Insert the top and bottom legs of the window filler
panel frame in to the channel in the top angle and
bottom rail. Repeat on the other side.
4. Insert the two 7/16" washing head locking screws
(2) into the holes in the top leg of the filler pane
frame (refer to step 6). Do not completely tighten.
Allow the leg to slide freely. The screws will be
tightened after section 6.
1. Open the window and mark the center of the
window stool as shown (see Fig. 11).
2. Place the cabinet in the window with the bottom
stool angle firmly seater over the window stool.
Bring the window down temporarily behind the
top angle to hold the cabinet in place (see Fig. 12).
Sill angle
bracket
Flat head
bolt
screws
and locknuts
2 screws per support bracket
Bottom
rail seal
hex head screw

3. Install the support brackets (with the sill angle
brackets attached) to the correct holes at the
bottom of the cabinet (see Fig. 16).
4. Tighten.
Extend the window filler panels
Install the window sash seal
and safety lock.
Installation Instructions
13
7Attach the window filler
panels to the window frame
1. Extend the window filler panels out against the
window frame.
2. Use a 1/8" drill bit to drill a starter hole through the
hole in the top leg of each window filler panel and
into the window sash (see Fig. 18A and Fig. 18B).
Connect with one 3/ 4 (or 1/ 2") long hex head
screw.
Fig.18A
A.3/ 4 (or 1/2 ) long hex head screw
B. Left-hand window filler
panel top leg
C. Window channel
Fig.18B
A. 3/ 4"(or 1/2")-long hex head screw
Fig.17A
3/ 4 (or 1/ 2 )-long
hex head screw
1/2"screws and
locknuts
1. Carefully raise the window to expose the filler panel
locking screws. Loosen the screws so the filler panels
slide easily.
2. Extend the panels to fill the window opening completely.
Tighten the locking screws on top (see Fig. 17).
3. Close the window behind the top angle.
Locking screw
7/16" locking screw
and washer
4. Attach the top angle to the window frame. Use a 3/32"
drill bit to drill one hole through the hole in the
middle of the top angle into the window frame, and
drive one 3/ 4 (or 1/ 2 ) HEX-HEAD locking screw
through the hole in the middle of the top angle into the
window frame (see Fig.17A).
1. Trim the sash seal to fit the window width. Insert
the sash seal between the upper and lower sashes
(see Fig. 18).
Window sash seal
2. Attach the right angle safety lock (see Fig. 19).
Weather seal

Measure the inner width
of the side curtain
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
1 2 3 4 5 6
Fig.20
or
Fig.21
4. Repeat the previous steps on the other side.
Fig.22
3. Slide the R1 insulation panel into the side
curtain. The side with pattern should be facing
the indoor side
(see Fig.22).
11
In order to minimize air leaks between the room air
conditoner and the window opening, trim the weather
stripping with a proper length, peel off the protective
backing, and plug any gaps if needed (see Fig.23).
Fig.23
Install R1 hardware (for Energy
Star models only)
In order to minimize air leaks and ensure optimal
insulation, it is necessary to install the included R1
hardware to the side curtain. Follow the instructions
below.
1. After the unit is installed to the window,
measure the inner width of the side curtain (see
Fig.20).
10
2. Remark a line on the provided R1 insulation
panel according to a length 1/8 (3mm) less than the
measured width in Step 1, then cut the R1 insulation
(enilehtgnolalenap
Installation Instructions
14
9
Safety lock
3/4" (or 1/2") hex
head screws
Install the chassis into the
cabinet and front of the unit
Fig.19
1. Lift the air conditioner and carefully slide it into the
cabinet leaving 6" protruding.
2. DO NOT push on controls or finned coils.
3. Be sure the chassis is firmly seated towards the rear
of the cabinet.
4. The front is installed in reverse order of removal
(refer to Section 1).
see Fig. 21).
Install the weather stripping
(for Energy Star models only)

Maximum wall thickness: 12" or 10"
1. Prepare the wall in frame construction (including
brick and stucco veneer). Working from inside the
room, find the wall stud closest to the centre of the
area where the air conditioner will be installed (by
sounding the wall, or by magnetically finding nails).
2. Cut or knock out a hole on each side of the center
stud.
3. Measure between the inside edges of every other
stud as shown in Fig. 1.
4. Build a wooden frame with the INSIDE dimensions
of your model listed above (measure twice). Frame
depth should be the same as wall thickness. Fill in
the space from the opening to the studs with wood
spacers, as shown.
5. Nail the frame to the spacers with the front flush
with the drywall.
Fig.2
Installation Instructions
Through-the-Wall InstalltaionI
All the parts needed for through-the-wall-
installation are provided, except for the wood frame,
shims, and 10 wood screws (at least #10-1" long).
15
NOTE: Consult the local building codes prior to
installation or a qualified carpenter.
Select Wall Location
1. Does not support major structural loads such as
the frame construction at window ends and under
truss-bearing points.
2. Does not have plumbing or wiring inside.
3. Is near existing electrical outlets or where another
outlet can be installed.
4. Is facing and not blocking the area to be cooled.
5. Allows free airflow from the rear sides and from
the end (outside) of the installed air conditioner.
Prepare the wall
( )
Inside
frame
height
Inside
frame
width

NOTE: If the wall thickness is 8-1/2" or more, add
aluminum flashing over the bottom of the frame
opening to prevent water from entering the area
between the inner and outer wall. 1" wood screw
Caulk as
required
Aluminum flashing over
the bottom of the frame
Refer to Step 5 in the "Window Mounting" section
(p. 13) to assemble the support brackets. A wooden
strip nailed to the outside wall should be used in
conjunction with the sill support angle brackets.
Prepare and install the cabinet.
1. Slide the chassis from the cabinet. Refer to Step
1 in the "Window Mounting" section (p. 12).
2. Place the cabinet into the opening with the bottom
rail resting firmly on the bottom board of the wooden
frame.
3. Position the cabinet to achieve a proper slope for
water drainage (see Fig. 5).
6. Install the chassis into the cabinet by following
all the Step 8 procedures in the "Window Mounting"
section (p. 14).
5
Side louvers
Window sash
Window sill
Sill angle bracket
1 5
About1 / to1 /
4 8
Measure from
the cabinet edge.
NOTE: Make sure that air conditionertilted back about
(tilted 3-4 degree slope downward to the outside.)
After proper installation, if condensate drains from the
(see Fig.14).
1 5
1 / to 1 /
4 8
Installation Instructions
16
5. Screw or nail the cabinet wooden frame using
shims to eliminate distortion if the frame is
oversized (see Fig. 8). Remember to maintain a
proper slope as described in Step 3.
overflow drain hole during normal use, correct the slope
4. Secure the bottom rail to the wood frame with two large
1" (2.5 cm) wood screws using the two holes in the
bottom of the channel resting on the frame (see Fig. 6).

You may apply caulking and install a
trim on the interior wall. You can buy wood from your
local hardware. On the outside, caulk the openings
around the top and sides of the cabinet, including all
the wood sleeve sides.
Installation Instructions
Installation ina Masonry Wall
17
NOTE: Refer to Item 3, Step 5 of the "Window
Mounting" section (p. 13) for the bottom rail seal
location.
1. Cut or build a wall opening in the masonry wall
similar to the frame construction (refer to Step 2
of "Through-the-Wall Installation" section (p. 16)
or a wall thickness greater than 8-1/2").
2. Secure the cabinet in place using masonry nails
or right masonry anchor screws. Another way to
do this is to build an in-between 2x4 frame (see Fig.
1 after Step 2 on p. 16), but doubled on either side,
and install the frame between the masonry wall
opening and the cabinet. The frame must be securely
anchored to the masonry wall opening. This ensures
a good louver clearance on either side of the cabinet.
3. Install a lintel to support the masonry wall above
the cabinet. Existing holes in the cabinet may be
used and/or additional holes can be drilled to fasten
the cabinet at various positions. Verify that the louver
clearance is in accordance with Step 1 above.
4. Install the exterior cabinet support brackets as
shown in Step 2 in the "Through-the-Wall Installation"
section (p. 16). Caulk or flash as required to provide
a weather-tight seal around the top and sides of the
cabinet.
5. To complete the installation, apply a wood trim
moulding around the room side projection of the
cabinet.

You may vacuum the filter clean instead of
washing it.
moistened with
Care and Cleaning
Air Filter Cleaning
Cabinet Cleaning
Winter Storage
18
store
it in its original box.