WHYNTER ARC-1280MX (01) PDF Document

The symbols displayed on the unit indicate the following:

CAUTION (with open book symbol): This symbol shows that the operation manual should be read carefully.

CAUTION (with wrench symbol): This symbol shows that a service personnel should be handling this equipment with reference to the installation manual.

CAUTION (with ‘i’ in a circle symbol): This symbol shows that information is available such as the operating manual or installation manual.

Caution: Risk of fire/flammable materials (Required for R32/R290 units only): This symbol indicates a risk of fire due to flammable materials.

To prevent death, injury, or property damage, the following instructions must be followed:

• Installation must be performed according to the installation instructions. Improper installation can cause water leakage, electrical shock, or fire.

• Use only the included accessories and parts, and specified tools for the installation. Using non-standard parts can cause water leakage, electrical shock, fire, and injury or property damage.

• Ensure the outlet you are using is grounded and has the appropriate voltage. The power cord is equipped with a three-prong grounding plug to protect against shock.

• Your unit must be used in a properly grounded wall receptacle. If the wall receptacle is not adequately grounded or protected by a time delay fuse or circuit breaker, have a qualified electrician install the proper receptacle.

• Install the unit on a flat, sturdy surface to avoid damage or excessive noise and vibration.

• The unit must be kept free from obstruction to ensure proper function and to mitigate safety hazards.

• Do not modify the length of the power cord or use an extension cord to power the unit.

• Do not share a single outlet with other electrical appliances. Improper power supply can cause fire or electrical shock.

• Do not install your air conditioner in a wet room such as a bathroom or laundry room. Too much exposure to water can cause electrical components to short circuit.

• Ensure there is a minimum of 36″ clearance around the unit and that it is clear from any combustible items such as propane, fire extinguishers, fuel, etc.

• The exhaust hose should always be used and should never be covered or blocked, as this can become a fire hazard.

• The unit has wheels to facilitate moving. Do not use the wheels on thick carpet or roll over objects, as these could cause tipping.

• Do not operate a unit that has been dropped or damaged.

• Do not place the portable air conditioner close to any other heat-generating appliances.

• Do not touch the unit with wet or damp hands or when barefoot.

• If the air conditioner is knocked over during use, turn off the unit and unplug it from the main power supply immediately. Visually inspect the unit for damage and contact customer service if you suspect damage.

• In a thunderstorm, the power must be cut off to avoid damage to the machine due to lightning.

• The unit’s circuit board (PCB) is designed with a fuse (T 3.15A/250V) to provide overcurrent protection.

• When the water drainage function is not in use, keep the upper and lower drain plugs firmly plugged into the unit.

• This appliance is not intended for use by persons (including children) with reduced physical, sensory, or mental capabilities unless they have been given supervision.

• If the supply cord is damaged, it must be replaced by the manufacturer or a qualified person to avoid a hazard.

• Prior to cleaning or maintenance, the appliance must be disconnected from the supply mains.

Please adhere to the following safety guidelines regarding the flammable refrigerant R32:

• Keep ventilation openings clear of obstruction.

• The appliance shall be stored so as to prevent mechanical damage from occurring.

• The appliance shall be stored in a well-ventilated area where the room size corresponds to the room area as specified for operation.

• Any person working on a refrigerant circuit should hold a current valid certificate from an industry-accredited assessment authority, authorizing their competence to handle refrigerants safely.

• Servicing shall only be performed as recommended by the equipment manufacturer.

• Please follow the instructions carefully to handle, install, clean, and service the air conditioner to avoid any damage or hazard.

• When maintaining or disposing of the air conditioner, the refrigerant (R32) must be recovered properly and not discharged directly into the air.

• No open fire or device that may generate sparks/arcing shall be near the air conditioner to avoid causing ignition of the flammable refrigerant used.

Your installation location should meet the following requirements:

• Make sure that you install your unit on an even surface to minimize noise and vibration.

• The unit must be installed near a grounded plug, and the manual drain outlet (found on the back of the unit) must be accessible.

• The unit should be located at least 30cm (12″) from the nearest wall to ensure proper air conditioning.

• The exhaust outlet of the unit should be at least 50cm (19.7″) away from obstacles.

• DO NOT cover the Intakes, Outlets or Remote Signal Receptor of the unit, as this could cause damage to the unit.

The Inverter variable-speed system allows the compressor to optimize efficiency and power consumption while maintaining a specified output. The advantages are:

• At least 40% – 50% cheaper to run as it consumes less power

• Quicker to achieve desired temperature

• Quieter operation

• No temperature fluctuations

• No voltage peaks from the compressor

Federal regulations require manufacturers to calculate cooling capacity based on a specific test procedure that was changed for models manufactured after 2017. While the BTUs may appear lower on newer models, the actual cooling capacity has not changed.

SACC is the representative value of Seasonally Adjusted Cooling Capacity, in BTU/H, as determined in accordance with the DOE test procedure at title 10 Code of Federal Regulations (CFR) 430, subpart B, appendix CC and applicable sampling plans.

Step 1: Assemble the Exhaust and Intake Hoses

Press the exhaust/intake hose (BB) into the window slider adapter (CC). Connect the unit adapter (AA) to the other end of the hose. It will automatically clamp using the elastic buckles. Set aside two complete hose assemblies (one for exhaust, one for intake).

Step 2: Prepare the Adjustable Window Slider

Choose the window sliders (GG, HH, KK) that fit your window. You may need to cut a slider to the correct size. Once adjusted to the proper length, use the bolts (II) to fasten the window sliders together.

Step 3: Complete Sealing of the Window

Cut the adhesive foam seal A (DD) and B (EE) strips to the proper lengths. Attach them to the window sash and frame as shown in the manual diagrams for either a hung or sliding window.

Step 4: Install the Slider Kit and Seal Gaps

Insert the assembled window slider kit into the window opening. Cut the non-adhesive foam seal C (FF) strip to match the width (for hung windows) or height (for sliding windows) of your window. Insert this seal between the glass and the window frame to prevent air and insects from getting into the room. If desired, install the security bracket (JJ) with 2 screws.

Step 5: Install the Hose Assemblies to the Unit

Slide the exhaust hose assembly (A) into the exhaust air outlet opening on the back of the unit, aligning the lower groove and making sure to catch the hook into the hook seat. Push the intake hose assembly (B) into the air outlet opening of the unit along the arrow direction.

Step 6: Connect the Hoses to the Window Kit

Insert the window slider adapters (connected to the ends of the hoses) into the holes on the window slider kit.

NOTE: To ensure proper function, DO NOT overextend or bend the hose. Make sure that there is no obstacle around the air outlet of the exhaust hose (in the range of 500mm) for the exhaust system to work properly.

1. POWER / WIRELESS button: Press to turn the unit on or off. To activate wireless connection mode, press and hold for 3 seconds until ‘AP’ appears on the display.

2. MODE button: Press to select the operating mode in the sequence: AUTO, COOL, DRY, and FAN.

• AUTO mode: The unit automatically selects cooling or fan-only operation based on the selected temperature and the room temperature. Fan speed cannot be adjusted in this mode.

• COOL mode: Use the UP and DOWN buttons to select a temperature between 60°F-86°F (16°C-30°C). Press the FAN button to choose the fan speed.

• DRY mode: The unit dehumidifies the air. Fan speed and temperature cannot be adjusted. The fan motor operates at AUTO speed.

• FAN mode: Press the FAN button to choose the fan speed. The temperature cannot be adjusted. Do not put the duct to the window in this mode.

3. UP and DOWN buttons: Press to adjust temperature settings in 1°F/1°C increments or to adjust the Timer setting in a range of 0-24 hours. To switch between Fahrenheit and Celsius, press and hold both buttons simultaneously for 3 seconds.

4. DISPLAY WINDOW: Shows the temperature in °C or °F and the Auto-timer settings.

5. TIMER button: Press to initiate the AUTO ON start time and AUTO OFF stop time program, used in conjunction with the UP & DOWN buttons.

6. SWING/VENT button: Press to initiate the louver swing feature. Press once to start the louver moving, and press again to stop it in the desired direction.

7. Continuous FAN mode button: Press to select the fan speed in four steps: LOW, MED, HIGH and AUTO. In COOL or DRY mode, press and hold this button for 3 seconds to turn the constant fan function on or off.

8. SLEEP mode button: When in COOL mode, the selected temperature will increase by 1°C/2°F (or 1°F) for 30 minutes and will be maintained for 7 hours before returning to the original setting. This feature is unavailable in FAN or DRY mode.

Reset Filter: Press and hold the SLEEP button for 3 seconds to reset the filter reminder light. The light will illuminate after 250 hours of operation as a reminder to clean the air filter.

I SENSE FEATURE: The remote control functions as a thermostat. When the I SENSE feature is activated with the dedicated button on the remote, it transmits temperature signals to the air conditioner every 3 minutes for precise temperature control. This feature is not applicable in DRY and FAN mode and requires the remote to be within 26 feet of the unit.

AUTO RESTART: In the event of a power outage, the air conditioner restarts at the previously set function mode and settings when power is restored.

COMPRESSOR LOCK OUT: The compressor 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.

Portable air conditioners may make sounds that are not familiar to you. The sounds listed below are normal. Noise reflecting off hard surfaces such as a floor or wall can make the sounds seem louder than they actually are.

• The compressor may make a pulsating or high-pitched sound.

• Water running from the evaporator to the water tank may make a splashing sound.

• Refrigerant flowing may make a gurgling sound.

• Fan sound may come from front and back air vents.

Point the front of the remote towards the control panel on the unit. A beep confirms signal reception. The maximum range is approximately 8 meters/26 feet.

• Power button (16): Turns the unit On and Off.

• Mode button (15): Controls the function modes: Auto, Cool, Dry, and Fan.

• Up / Down buttons (13, 14): Increases or decreases the set temperature/time.

• Fan Speed button (17): Controls the fan speeds: Auto, High, Medium, or Low.

• Swing Feature button (18): Press to stop or start louver auto-swing feature.

• Sleep Feature button (19): Starts or stops louver movement and sets the louver angle.

• Timer ON button (20): Enables the Timer On function.

• I Sense Feature button (21): Press to initiate the I SENSE feature.

• Lock Setting button (22): Press I SENSE and TIMER OFF buttons to lock current settings.

• Timer OFF button (23): Enables the Timer Off function.

• LED Display button (24): Press this button to turn on and turn off the display on the indoor unit.

• Temperature Scale button (25): Press to change the Temperature Scale between Fahrenheit and Celsius.

The remote control uses two AAA batteries.

1. Slide the back cover from the remote downward to expose the battery compartment.

2. Insert the batteries, ensuring to match the (+) and (-) symbols on the ends of the batteries with the symbols inside the battery compartment.

3. Slide the battery cover back into place.

Note: Do not mix old and new batteries. Remove batteries if the remote will not be used for more than two months.

When the internal drain pan is full, the unit will beep 8 times and the display will show the error code P1. The air conditioning will stop, but the fan may continue to run.

A. Manual Drain Plug

1. Turn off and unplug the unit.

2. Place a shallow external container under the bottom manual drain plug.

3. Remove the drain plug and allow the collected condensation to drain completely.

4. Replace the bottom manual drain plug, pressing firmly to ensure a tight fit and no leaks.

B. Continuous Gravity Drain

This option is for automatically draining collected water, typically used during Dry mode.

1. Remove the upper drain plug.

2. Attach the included drain hose.

3. Place the open end of the drain hose over a receptacle like a floor drain or sink.

4. Ensure there are no kinks or bends in the drain hose and that it goes straight down toward the floor for gravity to work correctly.

Unit Cleaning

• Unplug the appliance before cleaning.

• Clean the cabinet with a lukewarm damp cloth and neutral detergent.

• Dry the cabinet with a lint-free dry cloth.

• Do not use gasoline, paint thinner, or other chemicals. Do not wash the appliance directly under a tap or with a hose.

Air Filters

The two washable air filters should be cleaned every two weeks for efficient performance.

1. Switch off the air conditioner.

2. Press down on the two tabs to release the upper and lower air intake grilles.

3. Use a vacuum cleaner or tap lightly to remove loose dust and dirt.

4. Rinse the filters thoroughly under warm running water (no hotter than 100°F).

5. Dry thoroughly before re-inserting the filters.

If any of the error codes below appear, unplug the unit, let it sit for 5 minutes, and plug it back in. If the error persists, contact customer support.

• P1 – Water tray is full. Attach drain hose and drain excess water.

• EH60 – Room temperature sensor error.

• EH61 – Evaporator temperature sensor error.

• EC52 – Condenser temperature sensor error.

• EH0b – Display panel communication error.

• EL0C – Refrigerant leakage detection malfunction.

1. Drain the unit’s water collection tray completely.

2. Run the appliance on FAN mode for 12 hours in a warm room to dry it internally and prevent mould.

3. Turn off the appliance and unplug it.

4. Clean the exterior surfaces with a soft, dampened cloth.

5. Clean the air filter and reinstall the clean, dry filter before storing.

6. Remove the batteries from the remote control.

Store the unit in a cool, dark place. Exposure to direct sunshine or extreme heat can shorten its lifespan.

Possible Causes:

• Power failure / outage.

• The automatic switch, line fuse, or breaker has been tripped.

• The power supply voltage is too low.

• The L.C.D.I. power plug for the unit is tripped.

• The internal water reservoir is full (“P1” on display).

Solutions:

• Restore the power supply.

• Flip the switch / change the fuse / turn the breaker back on. You may have too many appliances on one circuit; move other appliances to another circuit.

• Move the unit to another circuit with the correct voltage.

• Press the Reset button on the L.C.D.I. power plug.

• Drain water from the air conditioner.

• Check for a possible loose internal connection. Contact Whynter for service.

Possible Causes:

• The room temperature is outside of the operational tolerances of the unit (60°F to 90°F).

• The Cooling mode is not on.

• The compressor has not turned on yet because of its 3-minute time delay.

• The set temperature is too high.

• The internal water reservoir is full (“P1” on display).

Solutions:

• Use the unit within the designed ambient temperatures.

• Press the MODE button until the COOL light is shown on the display.

• Give the compressor 3 minutes to turn on after the Cooling mode has been selected.

• Set the air conditioner to a lower temperature, at least 5°F below the ambient temperature.

• Manually drain the water by removing the drain plug, or allow the unit to exhaust the water by running fan-only mode. Cooling will resume afterward.

• Check for a possible loose internal connection. Contact Whynter for service.

Possible Causes:

• The filters are dirty or obstructed.

• The air intake or exhaust is obstructed.

• The unit is set in DRY or FAN mode.

• The unit is set to low fan speed.

Solutions:

• Clean the air filters.

• Make sure there is at least 20 inches of clearance from the air intake. Ensure the length of the exhaust hose is as short as possible.

• Set the unit to the cooling mode.

• Set the unit to a higher fan speed.

Possible Causes:

• Windows or doors are open.

• There are too many people in the room.

• There is direct sunshine into the room.

• The room is a kitchen or has many heat-producing appliances.

• There is a server in the room.

• The room is too large.

Solutions:

• Close all windows and doors.

• You may need additional cooling or another air conditioner.

• Close curtains or blinds to minimize the amount of direct sunlight.

• You may need additional cooling or another air conditioner for rooms with high heat loads.

Possible Causes:

• The unit is not level.

• The surface underneath the unit is uneven.

• Low power voltage.

Solutions:

• Make sure the unit is on a hard, level, and stable surface.

• Move the unit to a location with a level and hard floor.

• Ensure the wall outlet supports the required power consumption of the air conditioner and do not use an extension cord.

Possible Causes:

• The unit is tilted or not leveled.

• The water tank is full.

Solutions:

• Make sure the unit is leveled.

• Drain water from the drain plug at the back of the air conditioner.

Possible Cause:

• Fan speed differences are not very noticeable.

Solution:

• The fan speed difference is not very noticeable when the compressor is on. Try setting the unit to Fan-only mode; you should be able to hear the difference between high and low fan speed settings.