User manual Window Air Conditioner
RAC-WK05 Models

RAC-WK06 / RAC-WK08 / RAC-WK10 / RAC-WK12 Models

NOTE All the pictures in this manual are for illustrative purposes only. The actual appearance of the air conditioner you purchased may vary slightly, but its operation and functions will be similar.
WARNING To reduce the risk of fire, electrical shock, or injury to people or property, read the SAFETY PRECAUTIONS before operating this appliance.
This air conditioner is designed to be operated under the following conditions:

NOTES
NOTE Always wait 3 minutes when turning the unit off and then on again, or when changing from cool to fan and back to cool. This prevents compressor from overheating and possible tripping.
To begin operating the air conditioner, follow these steps:
1. Set the thermostat to the highest number (coldest or cooler setting).
2. Set the selector control to the highest COOL setting.
3. Adjust the louver for comfortable airflow (see Air Directional Louvers).
4. Once the room feels cooled, adjust the thermostat to the setting you find most comfortable.
5. Make sure that the airflow inside and outside are not obstructed.

The louvers will allow you to direct the airflow Left or Right, or Up and Down (optional on some models) throughout the room as needed.
Move the Levers from side to side until the desired LEFT/RIGHT direction is obtained.
You can also move the LEFT lever to adjust airflow UP/DOWN as needed.

THERMOSTAT
The thermostat is used to set the desired room temperature when the unit is being operated in the COOL MODE.
To set the desired room temperature, rotate the thermostat switch to the desired setting. After the set temperature is achieved the thermostat will automatically start and stop the compressor in order to maintain the desired set temperature.
Rotate the thermostat selector clockwise for higher cool settings. Higher cool settings will provide lower room temperature. Rotate the thermostat selector counter clockwise for lower cool settings. Lower cool settings will provide higher room temperature.

COOL MODE
The desired cool setting is selected by rotating the knob to the right to the desired position.
HIGH COOL has maximum cooling effect and airflow.
LOW COOL has minimum cooling effect and airflow.
FAN MODE
Rotate the knob to the left to select your choice of fan speeds for air circulation.
NOTE: When selecting a low fan or high fan, the compressor will not run.
NOTE The controls featured in this manual are representative of many available models. Your model may offer slightly different features.
Before you begin, thoroughly familiarize yourself with the control panel as shown below and all its functions, then follow the symbol for the functions you desire. The unit can be controlled by the unit control alone or with the remote.

TO TURN UNIT ON OR OFF:
Press ON/OFF button to turn unit on or off .
NOTE: The unit will automatically initiate the Energy Saver function under Cool, Dry, Auto (only AutoCooling and Auto-Fan) modes.
TO CHANGE TEMPERATURE SETTING:
Press UP/DOWN button to change temperature setting.
NOTE: Press or hold either UP (
) or DOWN (
) button until the desired temperature is seen on the display.
This temperature will be automatically maintained anywhere between 62°F (17°C) and 86°F (30°C). If you want to display the actual room temperature, see To Operate on Fan Only section.
TO ADJUST FAN SPEEDS:
Press to select the Fan Speed in four steps - Auto, Low, Med or High. Each time the button is pressed, the fan speed mode is changed. On Dry mode, the fan operates on Low speed automatically and cannot be changed.
SLEEP FEATURE:
Press Sleep button to initiate the sleep mode. In this mode the selected temperature will increase by 2°F/ 1(or 2)°C 30 minutes after the mode is selected.
The temperature will then increase by another 2°F/ 1(or 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 pressing the Sleep button again.
CHECK FILTER FEATURE:
Press Check filter button to initiate this feature. This feature is a reminder to clean the Air Filter for more efficient operation. The 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.
ENERGY SAVER FEATURE (ECO):
Press Energy Saver button to initiate this function. This function is available on COOL, DRY, AUTO (only AUTO-COOLING and AUTO-FAN) modes. 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 time the compressor turns back on and Cooling resumes.
TO SELECT THE OPERATING MODE:
To choose operating mode, press Mode button. Each time you press the button, a mode is selected in a sequence that goes from Auto, Cool, Dry and Fan. The indicator light adjacent will be illuminated and remain on once the mode is selected.
The unit will automatically initiate the Energy Saver function under Cool, Dry, Auto (only AutoCooling and Auto-Fan) modes.
To operate on Auto feature:
To operate on Fan Only:
To operate on Dry mode:
TIMER: AUTO START/STOP FEATURE:

DISPLAYS:
Shows 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 it 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 it back in. If error repeats, call for service.
NOTE: “
” is shown in the display area.
NOTES
Your air conditioner is designed to install in standard double hung windows with opening widths of 23” to 36” (584mm to 914mm).

Table 1



Lower sash must open sufficiently to allow a clear vertical opening (see dimension H in Table 1). Side louvers and the rear of the AC must have clear air space to allow enough airflow through the condenser for heat removal. The rear of the unit must be outdoors, not inside a building or garage.

NOTE Weather stripping is only for ENERGY STAR models.
A: Remove the air conditioner from the carton and place on a flat surface.
B: Remove top rail and R1 insulation hardware (R1 insulation hardware for ENERGY STAR models only) from the packaging material as shown in Fig. A.


C. Align the hole in the top rail with those in the top of the unit as shown in Fig. B.
D. Secure the top rail to the unit with the 3/8” Screws as shown in Fig. C.
NOTE For safety reasons, all four (4) screws MUST be securely fastened.
NOTE Before installing unit, the top rail must be assembled on the unit.
NOTE Top rail and Sliding Panels at each side are off set to provide the proper pitch to the rear of (5/16”). This is necessary for proper condensed water management and drainage. If you are not using the Side Panels for any reason, this pitch to the rear must be maintained.

A. Place unit on floor, a bench or a table. Hold the Accordion Panel in one hand and gently pull back the center to free the open end. See Fig. 1.

B. Slide the free end “
“ section of the panel directly into the cabinet as shown in Fig. 2. Slide the panel down. Be sure to leave enough space to slip the top and bottom of the frame into the rails on the cabinet.

C. Once the panel has been installed on the side of the cabinet, make sure it sits securely inside the frame channel by making slight adjustments.
Slide the top and bottom ends of the frame into the top and bottom rails of the cabinet. Fig. 3.

D. Slide the panel all the way in and repeat on the other side.
NOTE If storm window blocks AC, see Fig. 15.

A. Keep a firm grip on the air conditioner, carefully place the unit into the window opening so the bottom of the air conditioner frame is against the window sill (Fig. 5). Carefully close the window behind the top rail of the unit.
NOTE Check that air conditioner is tilted back per dimension H (Fig. 5) (tilted about 3° to 4° downward to the outside). After proper installation, condensate should not drain from the overflow drain hole during normal use. Adjust the slope if otherwise.

B. Extend the side panels out against the window frame (Fig. 6).

A. Place the frame lock between the frame extensions and the window sill as shown (Fig. 7).
Drive 3/4” (19 mm) or 1/2” (12.7 mm) locking screws through the frame lock and into the sill.
NOTE To prevent window sill from splitting, drill 1/8” (3 mm) pilot holes before driving screws.

B. Drive 3/4” (19 mm) or 1/2” (12.7 mm) locking screws through frame holes into window sash (Fig. 8).

C. To secure lower sash in place, attach right angle sash lock with 3/4” (19 mm) or 1/2” (12.7 mm) screw as shown (Fig. 9).

D. Cut Window sash seal foam and insert it in the space between the upper and lower sashes (Fig. 10).

In order to minimize air leaks and ensure optimal insulation, it is necessary to install the included R1 insulation hardware to the side curtain. Follow the instructions below.
Step 1. After the unit is installed in the window, measure the inner width of the side curtain as shown (Fig. 11).

Step 2. Mark a line on the provided R1 insulation panel that is 1/8” (3 mm) less than the measured width in step 1, then cut the R1 insulation panel along the line (Fig. 12).

Step 3. Slide the R1 insulation panel into the side curtain. The side with the pattern should facing indoors. (Fig. 13).
Step 4. Repeat on the other side.

In order to minimize air leaks between the room air conditoner and the window opening, trim the weather stripping to the proper length, peel off the protective backing and plug any gaps if needed (Fig. 14).
Models RAC-WK05/06/08/10/12

Add wood as shown in Fig. 15, or remove storm window before air conditioner is installed.
If storm window frame must remain, be sure the drain holes or slots are not caulked or painted shut. Accumulated rain water or condensation must be allowed to drain out.
CAUTION Clean your air conditioner occasionally to keep it looking new. Be sure to unplug the unit before cleaning to prevent shock or fire hazards.
RAC-WK05 only

Models RAC-WK06 / 08 / 10 / 12

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 cause an accumulation of frost on the cooling coils.
NOTE Never use hot water over 104°F (40°C) to clean the air filter. Never attempt to operate the unit without the air filter.
If you plan to store the air conditioner during the winter, remove it carefully from the window according to the installation instructions. Cover it with plastic or return it to the original carton.
Before calling for service, review this list. It may save you time and expense. This list includes common occurrences that are not the result of defective workmanship or materials in this appliance.
Air conditioner does not start
Air from unit does not feel cold enough
Air conditioner cooling, but room is too warm- ice forming on cooling coil behind decorative front.
Air conditioner cooling, but room is too warm- NO ice forming on cooling coil behind decorative front
Air conditioner turns on and off rapidly
Noise when unit is cooling
Water dripping INSIDE when unit is cooling
Water dripping OUTSIDE when unit is cooling
Remote sensing deactivating prematurely (some models)
Room too cold

Location of the remote controller
CAUTIONS
Step 1: Insert a coin vertically in the groove on the battery cover, and turn 45º clockwise, making sure that the groove is aligned with the “unlock” sign as shown below and remove the battery cover.

Step 2: Install battery inside the remote controller, the positive (+) side up.

Step 3: Replace the battery cover, making sure the battery cover groove is aligned with the “unlock” sign. Insert a coin vertically in the groove and press it gently, then rotate 45º counter clockwise, making sure the groove is aligned with the “lock” sign as shown below.

WARNING
Remote Control Specifications

NOTE



Auto operation
Ensure the unit is plugged in and power is available.
NOTES

Cooling / Fan operation
Ensure the unit is plugged in and power is available.
NOTE Temperature cannot be changed in Fan mode.

Dehumidifying operation
Ensure the unit is plugged in and power is available.
NOTE In the Dehumidifying mode, you cannot adjust the fan speed, as it is controlled automatically.

Timer operation
Press the TIMER button to initiate the Auto-start and Auto-stop setting program of the unit.
To set the Auto-start/stop time.
1. Press the TIMER button, when the TIMER ON indicator is displayed on the LED window of the air conditioner, it indicates the Auto Start setting program is initiated. When the TIMER OFF indicator is 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. The control will count down the time remaining until start/stop.
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.
NOTE 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.

COMBINED TIMER
(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.
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 stop it 8 hours after setting.

Energy saver operation
In this 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 until the room temperature is above the set temperature, at which time the compressor turns back on and cooling resumes.
NOTE
Reference file: Toshiba RAC-WK1011ESCWU 10,000 BTU 115-Volt Smart Wi-Fi Window Air Conditioner
Additionally, the document applies to other Toshiba models: RAC-WK0511CMU, RAC-WK0611CRU, RAC-WK0811ESCWU, RAC-WK1211ESCWU