Gree Split Air Conditioner Owner's Manual

Thank You

Thank you for choosing Gree products. Please read this Owner's Manual carefully before operation and retain it for future reference. If you have lost the Owner's Manual, please contact the local agent or visit www.gree.com or send an email to global@cn.gree.com for the electronic version.

NOTE: Actual product may be different from graphics; please refer to actual products.

Product Models

Indoor Unit Models:

• GWC09ATCXB-D6DNA4C/I
• GWC12ATCXB-D6DNA4A/I
• GWC18ATDXD-D6DNA4A/I
• GWC24ATEXF-D6DNA4F/I
• GWH09ATCXB-D6DNA4D/I
• GWH12ATCXB-D6DNA4B/I
• GWH18ATDXD-D6DNA4F/I
• GWH24ATEXF-D6DNA4H/I
• GWH30ATEXH-D6DNA1G/I
• GWH36ATEXH-D6DNA1G/I

Outdoor Unit Models:

• GWC09ATCXB-D6DNA1C/O
• GWC12ATCXB-D6DNA1A/O
• GWC18ATDXD-D6DNA1A/O
• GWC24ATEXF-D6DNA1F/O
• GWH09ATCXB-D6DNA4D/O
• GWH12ATCXB-D6DNA4B/O
• GWH18ATDXD-D6DNA4F/O
• GWH24ATEXF-D6DNA4H/O
• GWH30ATEXH-D6DNA1G/O
• GWH36ATEXH-D6DNA1G/O

Explanation of Symbols

Exception Clauses

Gree will bear no responsibility when personal injury or property loss is caused by the following reasons:

• Damage to the product due to improper use or misuse.
• Alteration, change, maintenance, or use of the product with other equipment without abiding by the manufacturer's instruction manual.
• Product defects directly caused by corrosive gas (after verification).
• Defects due to improper operation during transportation.
• Operation, repair, or maintenance without abiding by the instruction manual or related regulations.
• Problems or disputes caused by the quality specifications or performance of parts and components produced by other manufacturers (after verification).
• Damage caused by natural calamities, adverse using environment, or force majeure.

For installation, relocation, or maintenance, please contact a dealer or local service center. Improper installation, relocation, or maintenance may cause serious damage, personal injury, or death. Refrigerant handling during installation, maintenance, or disassembly must be performed by certified professionals or in compliance with local laws and regulations.

This appliance is not intended for use by persons (including children) with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. Children should be supervised to ensure they do not play with the appliance.

Refrigerant Information

Refrigerant Safety Group: A2L

Appliance filled with flammable gas: R32

Read the installation manual before installation, the owner's manual before use, and the service manual before repair.

The air conditioner uses R32, a specially cleaned, flammable, and odorless fluoride refrigerant. While flammable, its flammability is very low and requires fire to ignite. R32 is a non-polluting refrigerant with no harm to the ozone layer and a lower impact on the greenhouse effect. It offers excellent thermodynamic features for high energy efficiency, requiring less filling.

WARNING: Appliance filled with flammable gas R32.

The appliance shall be installed, operated, and stored in a room with a floor area larger than specified (refer to table "a" in "Safety operation of flammable refrigerant" section). The appliance shall be stored in a room without continuously operating ignition sources (e.g., open flames, operating gas appliances, or operating electric heaters). Storage should be in a well-ventilated area corresponding to the room area specified for operation, and protected from mechanical damage. Ducts connected to the appliance shall not contain an ignition source. Keep ventilation openings clear of obstructions. Do not pierce or burn. Be aware that refrigerants may not have an odor. Do not use means to accelerate defrosting or cleaning other than those recommended by the manufacturer. Servicing should only be performed as recommended by the manufacturer. Contact the nearest authorized Service Centre for repairs. Repairs by unqualified personnel can be dangerous. Comply with national gas regulations. Read the specialist's manual.

Safety operation of flammable refrigerant

Qualification of workers

Personnel involved in maintenance, service, and repair operations must be competent according to UL 60335-2-40 / CAN/CSA-C22.2 No. 60335-2-40 Annex HH. Any procedure affecting safety must only be carried out by competent persons. Special training is required for equipment with FLAMMABLE REFRIGERANTS.

Installation notes

The air conditioner must be installed in a room larger than the minimum room area specified on the nameplate or in Table a. Drilling or burning connection pipes is not allowed. Leak testing is mandatory after installation.

Maintenance notes

• Check if the maintenance area or room area meets the nameplate requirement. Operation is only allowed in rooms meeting the nameplate requirement.
• Check if the maintenance area is well-ventilated. Continuous ventilation should be maintained during operation.
• Check for fire sources or potential fire sources in the maintenance area. Open flames are prohibited; a "no smoking" warning board should be displayed.
• Check if the appliance mark is in good condition. Replace vague or damaged warning marks.

Welding

If cutting or welding refrigerant system pipes during maintenance:

1. Shut down the unit and cut power supply.
2. Eliminate the refrigerant.
3. Vacuum.
4. Clean with N2 gas.
5. Cut or weld.
6. Return to the service spot for welding.

Refrigerant should be recycled into a specialized storage tank. Ensure no open flames are near the vacuum pump outlet and that the area is well-ventilated.

Filling the refrigerant

Use specialized R32 refrigerant filling appliances. Ensure different refrigerants do not contaminate each other. Keep the refrigerant tank upright during filling. Stick the label on the system after filling. Do not overfill. Perform leakage detection before test running and again upon removal.

Safety instructions for transportation and storage

Use a flammable gas detector before unloading and opening the container. No fire sources or smoking. Comply with local rules and laws.

Safety of Construction

For appliances using FLAMMABLE REFRIGERANTS, all joints made in the installation between parts of the REFRIGERATING SYSTEM shall be made as follows:

• A brazed, welded, or mechanical connection shall be made before opening valves to permit refrigerant flow. A vacuum valve shall be provided to evacuate interconnecting pipes or uncharged REFRIGERATING SYSTEM parts.
• Mechanical connectors used indoors shall comply with ISO 14903. When reused indoors, sealing parts shall be renewed. When flared joints are reused indoors, the flare part shall be refabricated.
• Refrigerant tubing shall be protected or enclosed to avoid damage.
• Flexible refrigerant connectors (e.g., between indoor and outdoor units) that may be displaced during NORMAL OPERATION shall be protected against mechanical damage.

Pressure test and leak detect

After field piping completion for split systems, the field pipework shall be pressure tested with an inert gas and then vacuum tested prior to refrigerant charging. The minimum test pressure for the low side shall be the low side design pressure, and for the high side, the high side design pressure, unless the high side cannot be isolated, in which case the entire system is tested to the low side design pressure. Field-made refrigerant joints indoors shall be tightness tested with a sensitivity of 5 grams per year of refrigerant or better under a pressure of at least 0.25 times the maximum allowable pressure. No leak shall be detected.

Notices for using refrigerant sensor

The refrigerant sensor monitors R32 refrigerant leaks in real-time. If leakage is detected, the sensor triggers an alarm (buzzer sound), and the indoor unit displays "EA". The outdoor unit stops running. In case of leakage, open windows immediately for ventilation, check for fire sources, leave the room, and contact after-sales service. If the sensor reaches its service life or is damaged, the indoor unit displays "FE"; contact after-sales service for replacement. Avoid oil and water splashing onto the sensor. Do not use in environments with electromagnetic interference, chemical substances, flammable gas, combustible/explosive gas, or smog. Avoid items containing ethanol (perfume) or smog-producing items (cigarettes) near the sensor to prevent false alarms. Contact after-sales service if abnormal conditions occur. Only applicable to refrigerant sensor models.

FCC WARNING

WARNING: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

FCC STATEMENT: This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.

If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

IC STATEMENT

This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation.

Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

This equipment complies with FCC's and IC's RF radiation exposure limits set forth for an uncontrolled environment. The antenna(s) used for this transmitter must be installed and operated to provide a separation distance of at least 20 cm from all persons and must not be collocated or operating in conjunction with any other antenna or transmitter. Installers must ensure that 20cm separation distance will be maintained between the device (excluding its handset) and users.

Cet appareil est conforme aux limites d'exposition au rayonnement RF stipulées par la FCC et l'IC pour une utilisation dans un environnement non contrôlé. Les antennes utilisées pour cet émetteur doivent être installées et doivent fonctionner à au moins 20 cm de distance des utilisateurs et ne doivent pas être placées près d'autres antennes ou émetteurs ou fonctionner avec ceux-ci. Les installateurs doivent s'assurer qu'une distance de 20 cm sépare l'appareil (à l'exception du combiné) des utilisateurs.

Safety Precautions

Installation

⚠ WARNING: Installation or maintenance must be performed by qualified professionals. The appliance shall be installed in accordance with national wiring regulations. According to local safety regulations, use a qualified power supply circuit and circuit breaker. All wires of the indoor and outdoor units should be connected by a professional. Be sure to cut off the power supply before proceeding with any work related to electricity and safety. Ensure the power supply matches the air conditioner's requirements. Unstable power supply or incorrect wiring may result in electric shock, fire hazard, or malfunction. Please install proper power supply cables before using the air conditioner.

The grounding resistance should comply with national electric safety regulations. The air conditioner should be properly grounded. Incorrect grounding may cause electric shock. Do not connect the power before finishing installation. Install the circuit breaker; otherwise, malfunction may occur. Means for disconnection must be incorporated in the fixed wiring in accordance with wiring rules. The circuit breaker should include magnet buckle and heating buckle functions to protect against overload and short circuits.

Installation must be performed in accordance with the requirements of NEC and CEC by authorized personnel only.

Installation (CAUTION)

⚠ CAUTION: Instructions for installation and use are provided by the manufacturer. Select a location out of reach for children and far from animals or plants. If unavoidable, add a fence for safety. The indoor unit should be installed close to the wall. Do not use an unqualified power cord. If the power connection wire length is insufficient, contact the supplier for a new one. The appliance must be positioned so that the plug is accessible. For units with a plug, the plug should be reachable after installation. For units without a plug, a circuit breaker must be installed in the line. The yellow-green wire in the air conditioner is the grounding wire and cannot be used for other purposes. The air conditioner is a Class I electrical appliance and must be properly grounded with a specialized grounding device by a professional. Ensure it is always effectively grounded; otherwise, electric shock may occur. The temperature of the refrigerant circuit will be high; keep the interconnection cable away from the copper tube.

Operation and Maintenance (WARNING)

⚠ WARNING:

• Before operation, confirm power specification compliance with the nameplate.
• Before cleaning or maintaining, turn off the air conditioner and pull out the power plug.
• Ensure the power cord is not pressed by hard objects.
• Do not pull or drag the power cord to pull out the plug or move the air conditioner.
• Do not insert or pull out the power plug with wet hands.
• Use grounded power and ensure grounding is reliable.
• If the SUPPLY CORD is damaged, it must be replaced by the manufacturer, its service agent, or similarly qualified persons to avoid a hazard.
• If abnormal conditions occur (e.g., burned smell), disconnect power immediately and contact the local dealer.
• When the unit is unattended, turn it off and remove the power plug or disconnect power.
• Do not splash or pour water on the air conditioner, as it may cause short circuits or damage.
• Prohibit operating heating equipment around the air conditioner.
• Do not operate the unit in bathrooms or laundry rooms.
• Keep away from fire sources, inflammable, and explosive objects.
• Children and disabled persons are not allowed to use the portable room air conditioner without supervision.
• Keep children from playing or climbing on the air conditioner.
• Do not place or hang dripping objects above the air conditioner.
• Do not repair or disassemble the air conditioner yourself.
• Do not block the air outlet or air inlet.
• Do not insert any objects into the air conditioner.
• Do not throw sundries into the air duct. If sundries enter the air duct, contact professionals.
• Do not use an extension cord.
• A fuse or circuit breaker should be added to the product circuit. Refer to the MOP value on the nameplate for detailed specifications.
• The appliance shall be installed in accordance with national wiring regulations.
• If a STATIONARY APPLIANCE is not fitted with a SUPPLY CORD and a plug, an all-pole disconnection switch having a contact separation of at least 3mm in all poles should be connected in fixed wiring.

Operation and Maintenance (CAUTION)

⚠ CAUTION:

• Do not spill water on the remote controller, as it may break.
• Do not use fire or a hair dryer to dry the filter to avoid deformation or fire hazard.
• Do not block the air outlet or air inlet, as it may cause malfunction.
• Do not step on the top panel of the outdoor unit or place heavy objects on it, as it may cause damage or personal injury.
• For appliances made up of more than one factory-made assembly specified by the manufacturer to be used together, instructions shall be provided for completing the assembly to ensure compliance with the requirements.

When the following phenomena occur, turn off the air conditioner, disconnect power immediately, and contact the dealer or qualified professionals for service:

• Power cord is overheating or damaged.
• Abnormal sound during operation.
• Circuit breaker trips off frequently.
• Air conditioner emits a burning smell.
• Indoor unit is leaking.

Parts Name

Indoor Unit

• Air inlet
• Filter panel
• Air outlet
• Display (Temp. indicator, Power indicator, Humidity indicator)

NOTE: This is a general introduction; indicator colors are for reference only. Please refer to the actual display. Display content may differ from the actual product.

Operation and Introduction of Remote Controller

Buttons on Remote Controller

• On/Off
• Wifi
• I Feel
• UD-swing
• Humidity
• LR-swing
• Timer
• Sleep
• Light
• Operation mode

Introduction for Icons on Display Screen

• Send signal
• Auto mode
• Cool mode
• Dry mode
• Fan mode
• Heat mode
• X-FAN function
• Humidity control
• Indoor ambient temp.
• Indoor ambient humidity
• Set temperature
• TIMER ON / TIMER OFF
• Set time
• Left & right swing
• Up & down swing
• Child lock
• Fast cool
• WiFi function
• LED Auto LED
• I Feel function
• Sleep mode
• Two-way ventilation function

Introduction for Buttons on Remote Controller

NOTE: This is a general-use remote controller. It may be used for air conditioners with multiple functions. If a function is not available on your model, pressing the corresponding button will maintain the current running status.

After power connection, the air conditioner will emit a sound, and the Power indicator "●" will turn ON. You can then operate the air conditioner using the remote controller.

When the unit is ON, pressing a button on the remote controller will cause the signal icon "▲" on the remote controller's display to blink once, and the air conditioner will emit a "di" sound, indicating the signal has been sent.

For models with WiFi or wired controller functions, the indoor unit must first be controlled by the standard remote controller in auto mode to enable adjustable temperature control via the APP or wired controller.

This remote controller can adjust the temperature in auto mode. If matched with a unit without adjustable temperature in auto mode, the set temperature in auto mode may be invalid, or the displayed set temperature on the unit may differ from the remote controller's display.

On/Off Button

Press this button to turn the unit ON. Press again to turn it OFF.

Mode Button

Press this button to select the desired operation mode: AUTO, COOL, DRY, FAN, HEAT.

• AUTO: The air conditioner operates automatically based on sensed temperature. Fan speed can be adjusted using the Fan button, and blowing angle using the "↑" / "↓" buttons.
• COOL: Operates in cooling mode. Use "+" or "-" to adjust set temperature, Fan button for fan speed, and "↑" / "↓" for blowing angle.
• DRY: Operates at low fan speed. Fan speed cannot be adjusted. Use "↑" / "↓" for blowing angle.
• FAN: Blows only fan, no cooling or heating. Use Fan button to adjust fan speed and "↑" / "↓" for blowing angle.
• HEAT: Operates in heating mode. Use "+" or "-" to adjust set temperature, Fan button for fan speed, and "↑" / "↓" for blowing angle.

NOTE: For preventing cold air, the indoor unit delays 1-5 minutes to blow air after starting heating mode (actual delay depends on indoor ambient temperature).

Set temperature can be adjusted in AUTO mode. Set temperature range: 16°C - 30°C (61°F - 86°F). This mode indicator may not be available for some models.

Fan Button

Sets fan speed in the sequence: AUTO, 🔵 (Low), 🔴 (Low-Medium), 🔳 (Medium), 🔲 (Medium-High), 🔱 (High), 🎉 (Turbo), 🔶 (Quiet), then back to AUTO.

NOTE:

• Under AUTO speed, the air conditioner selects fan speed automatically based on factory default settings.
• Fan speed is low in DRY mode.
• X-FAN function: Holding the fan speed button for 2 seconds in COOL or DRY mode displays the "💧" icon. The indoor fan continues operating for a few minutes after the unit is turned off to dry the indoor unit and prevent mold. X-FAN is OFF by default after power-on. X-FAN is not available in AUTO, FAN, or HEAT modes.
• When X-FAN is ON: After turning off the unit, the indoor fan runs for a few minutes at low speed. Holding the fan speed button for 2 seconds during this period stops the indoor fan immediately.
• When X-FAN is OFF: The complete unit turns off directly after pressing the On/Off button.

+/- Button

Press "+" or "-" to increase or decrease the set temperature by 1°C (1°F). Holding "+" or "-" for 2 seconds changes the temperature quickly. The temperature indicator on the indoor unit changes accordingly.

Wifi Button

Press "Wifi" to turn on the WiFi function; the "Wifi" icon will be displayed. Hold "Wifi" for 5 seconds to turn it off; the "Wifi" icon will disappear (function available on some models). Under OFF status, press "Mode" and "Wifi" simultaneously for 1 second to restore WiFi module to factory settings.

NOTE: This function is only available for some models.

I Feel Button

Press this button to start the I Feel function; "💧" will be displayed. The remote controller sends the detected ambient temperature to the unit, which then adjusts the indoor temperature accordingly. Press again to close the function; "💧" will disappear. Place the remote controller near the user. Do not place it near high or low-temperature objects to avoid inaccurate readings. When I Feel is active, the remote controller must be within the indoor unit's signal receiving range.

UD-swing Button

Selects up & down swing angle. Fan blow angle cycles through:

• No display (horizontal louvers stop at current position)
• ↑: Air conditioner blows fan automatically. Horizontal louvers swing up & down at maximum angle.
• Fixed position: Air conditioner blows fan at a fixed position. Horizontal louver stops at the fixed position.

Hold the "↑" button for over 2 seconds to set the desired swing angle. Releasing the button stops the swing at that position.

NOTE: Pressing this button continuously for more than 2 seconds causes the main unit to swing up and down. Releasing the button stops the swing and maintains the louver position. Under swing up and down mode, switching from OFF to ON, pressing again after 2 seconds switches to OFF status directly. Pressing within 2 seconds follows the circulation sequence.

Humidity Button

Under cooling mode, press this button to select humidity control with cooling, smart dehumidification with cooling, or general cooling mode.

• Humidity control with cooling mode: Remote displays "🎉", humidity value "88" and "%" icon blink for 5s. Use "+" and "-" to set humidity (40%-80%). Temperature can be adjusted.
• Smart dehumidification with cooling mode: Remote displays "🎉"; remote and indoor unit display "Ao" for 5 seconds. Temperature can be adjusted. Humidity is automatically adjusted for comfort.
• General dehumidification mode with dehumidification mode: Remote displays "🎉", "%" and humidity value "88". Use "+" and "-" to set humidity (30%-70%). Temperature cannot be adjusted.
• Continuous dehumidification mode: Remote displays "🎉"; remote and indoor unit display "Co". Temperature cannot be adjusted. The unit always works in dehumidification status.

NOTE: Humidity control is an auxiliary function. Humidity is affected by indoor/outdoor environment, sealing, and airflow. If set humidity is higher than current humidity, the set humidity may not be reached. If the humidity sensor malfunctions, humidity settings will stop, and the unit will operate in general cooling or dehumidification mode.

LR-swing Button

Selects left & right swing angle. Fan blow angle cycles through:

• No display (stops at current position)
• ◁: Unit swings back and forth from left to right. Releasing the button stops the swing and maintains the louver position.

NOTE: Pressing this button continuously for more than 2 seconds causes the main unit to swing left and right. Releasing the button stops the swing and maintains the louver position. Under swing left and right mode, switching from OFF to ON, pressing again after 2 seconds switches to OFF status directly. Pressing within 2 seconds follows the circulation sequence. This function is only applicable for some models.

Timer Button

TIMER OFF: At ON status, press once to set TIMER OFF. "HOUR" and "OFF" flash. Press "+" or "-" within 5s to adjust time (half-hour increments). Holding "+" or "-" changes time quickly. Press "Timer" to confirm. "HOUR" and "OFF" stop flashing. To cancel TIMER OFF, press "Timer" again under TIMER OFF status.

TIMER ON: At OFF status, press once to set TIMER ON. Refer to TIMER OFF for detailed operation. To cancel TIMER ON, press "Timer" again under TIMER ON status.

NOTE: Time setting range: 0.5-24 hours. Time interval between operations cannot exceed 5s; otherwise, the remote controller exits setting status.

Sleep Button

Selects Sleep 1 (💧), Sleep 2 (💧), Sleep 3 (💧), or cancels Sleep mode. Sleep Cancel is default after power-on.

• Sleep 1: In Cool mode, setting temperature increases by 1°C after 1 hour, and by 2°C after 2 hours, then maintains. In Heat mode, setting temperature decreases by 1°C after 1 hour, and by 2°C after 2 hours, then maintains.
• Sleep 2: Air conditioner runs according to a preset sleep temperature curve.
• Sleep 3 (DIY): To set a custom sleep curve:
1. Under Sleep 3 mode, long press "I Feel" to enter custom setting. "1HOUR" displays, and the setting temperature blinks (initial curve values shown on first entry).
2. Use "+" and "-" to adjust the temperature, then press "I Feel" to confirm.
3. The timer advances to "2HOUR" or "3HOUR" or "8HOUR", and the setting temperature blinks.
4. Repeat steps (2)-(3) for up to 8 hours. The remote controller resumes normal display.

To inquire about the Sleep 3 curve: Enter custom setting status without changing temperature, then press "I Feel" to confirm.

NOTE: If no button is pressed for 10 seconds during setting/inquiry, the status automatically quits. Pressing "On/Off", "Mode", "Timer", or "Sleep" buttons also quits the status.

Light Button

Controls the LED status on the display: LED on, no display, LED off.

NOTE: Under energy-saving function, fan speed is auto and cannot be adjusted. Set temperature cannot be adjusted. Sleep and energy-saving functions cannot operate simultaneously. If energy-saving is set, pressing "Sleep" cancels it. If Sleep is set, activating energy-saving cancels Sleep.

Function introduction for combination buttons

Energy-saving function

Under cooling mode, press "Mode" and "Timer" simultaneously to start or turn off. "SE" is shown on the remote. The air conditioner automatically adjusts the set temperature for optimal energy saving. Press simultaneously again to exit.

Child lock function

Hold "On/Off" and "-" simultaneously for 3s to turn on/off. When ON, "🔒" icon is displayed. Operating the remote controller causes the "🔒" icon to blink three times without sending a signal.

Temperature display switchover function

Under OFF status, hold "Mode" and "-" simultaneously for 3s to switch temperature display between °C and °F.

Indoor ambient temperature or humidity display

Hold "On/Off" and "↑" simultaneously to view indoor ambient temperature or humidity on the indoor unit display.

• Blank: No Setting
• 💧: Displays indoor ambient temperature.
• 🎉: Displays indoor ambient humidity.

NOTE: Ambient humidity value is for reference only. "0%" may indicate a humidity detection board malfunction. Contact service. There may be slight deviations in humidity and photosensitive detection.

Clean reminder function of filter

Reminder is OFF by default. Hold "On/Off" and "↑" simultaneously for 5s to turn it ON. A buzzer sounds for 0.5s, and the dual-8 nixie tube flashes for 3s. When the reminder is ON, the nixie tube flashes for 30s upon unit startup to remind filter cleaning. Turn off by holding "On/Off" and "↑" simultaneously for 5s. The air conditioner will recount time.

NOTE: Once turned on, only this cycle reminder can be cleared. This function is available on some models.

Fast cool function

Press "On/Off" and "+" simultaneously in cooling mode to select 25°C (77°F) fast cooling, 16°C (61°F) fast cooling, or normal cooling. "🎉" icon displays in fast cooling mode. Fan speed is auto, and set temperature is 25°C (77°F) or 16°C (61°F). The set temperature flashes for 5s. During flashing, use "+" or "-" to adjust set temperature. Use "Fan" to adjust fan speed. If set temperature and fan speed are not adjusted within 20 minutes, the unit reverts to the status before fast cooling. If set temperature and fan speed are adjusted during fast cooling, the unit exits fast cooling mode and operates continuously under the adjusted status.

NOTE: Fast cooling function is applicable to some models. If unavailable, the remote controller reverts to the previous status after 20 minutes. Indoor unit operates continuously according to current status. Status may differ between the indoor unit and remote controller. This function is available on some models.

Auto clean function

Under unit OFF status, hold "Mode" and "↑" simultaneously for 5s to turn ON/OFF. When ON, indoor unit displays "CL". During auto clean, the unit performs fast cooling or heating. Noise from flowing liquid or thermal expansion/contraction is normal. The unit may blow cool or warm air. Ensure the room is well-ventilated during cleaning.

NOTE: Auto clean works under normal ambient temperature. Clean monthly if dusty, otherwise every three months. You can leave the room after turning on auto clean. The air conditioner enters standby status upon completion. This function is available on some models.

Night mode

Under cooling or heating mode, when sleep mode is ON and fan speed is low or quiet, the outdoor unit enters night mode.

NOTE: If cooling/heating effect is poor, press "Fan" to change speed or press "Sleep" to exit night mode. Night mode works under normal ambient temperature. This function is available on some models.

Replacement of Batteries in Remote Controller

1. Press the back side of the remote controller marked "◀" and push out the battery box cover along the arrow direction.
2. Replace with two 7# (AAA 1.5V) dry batteries, ensuring correct polarity (+/-).
3. Reinstall the battery box cover.

NOTICE: Point the remote control signal sender at the receiving window on the indoor unit. The distance should be no more than 8m, with no obstacles. Signal may be interfered by fluorescent lamps or wireless telephones; keep the remote controller close to the indoor unit. Replace with new batteries of the same model when required. Remove batteries if the remote controller is not used for a long time. If the display is fuzzy or blank, replace batteries.

Clean and Maintenance

⚠ WARNING: Turn off the air conditioner and disconnect power before cleaning to avoid electric shock. Do not wash the air conditioner with water. Do not use volatile liquids or corrosive detergents. Do not splash water or other liquids onto the unit, as it may damage plastic components or cause electric shock.

Clean Surface of Indoor Unit

Use a soft dry or damp cloth to wipe the surface. Do not remove the panel during cleaning.

Clean Filter

1. Remove filter: Hold the handle, pull upwards to release the clasp, then pull forwards to remove the filter.
2. Clean filter: Wash with clean water or use a dust catcher. For greasy filters, use warm water (45°C) with neutral detergent, then dry in a shady place.
3. Install filter: Reinstall in reverse order, pushing along guide rails and pressing edges.

⚠ WARNING: The filter should be cleaned every three months (more frequently in dusty environments). After removing the filter, do not touch fins to avoid injury. Do not use fire or a hair dryer to dry the filter.

NOTICE: Checking before use-season:

• Check air inlets and outlets for blockages.
• Check air switch, plug, and socket condition.
• Check filter cleanliness.
• Check outdoor unit mounting bracket for damage or corrosion; contact dealer if necessary.
• Check drainage pipe for damage.

NOTICE: Checking after use-season:

• Disconnect power supply.
• Clean filter and indoor unit panel.
• Check outdoor unit mounting bracket for damage or corrosion; contact dealer if necessary.

Notice for recovery:

• Many packing materials are recyclable. Dispose of them in appropriate recycling units.
• For disposal of the air conditioner, contact a local dealer or consultant service center for correct disposal methods.

Error Code

When the air conditioner status is abnormal, the temperature indicator on the indoor unit will blink to display an error code. Refer to the list below:

NOTE: For other error codes, please contact qualified professionals for service.

Checked Items Before Maintenance

General Phenomenon Analysis

Please check the following items before requesting maintenance. If the malfunction persists, contact your local dealer or qualified professionals.

⚠ WARNING: When the following phenomena occur, please turn off the air conditioner, disconnect power immediately, and contact the dealer or qualified professionals for service:

• Power cord is overheating or damaged.
• Abnormal sound during operation.
• Air switch trips off frequently.
• Air conditioner emits a burning smell.
• Indoor unit is leaking.

Do not repair or refit the air conditioner yourself. If the air conditioner operates under abnormal conditions, it may cause malfunction, electric shock, or fire hazard.

Installation Notice

Space Requirements:

• Space to the wall: At least 15cm
• Space to the obstruction: At least 300cm
• Space to the floor: At least 250cm

⚠ WARNING:

• When installing or relocating, ensure the refrigerant circuit is free from air or substances other than the specified refrigerant. Presence of air or foreign substances can cause system pressure rise or compressor rupture, leading to injury.
• Do not charge with non-compliant or unqualified refrigerant. This may cause abnormal operation, mechanical malfunction, or serious safety accidents.
• When recovering refrigerant during relocation or repair, run the unit in cooling mode. Fully close the liquid valve (high pressure side), then the gas valve (low pressure side). Stop the unit immediately and disconnect power. Refrigerant recovery should not exceed 1 minute. If it takes too long, air may be sucked in, causing pressure rise or compressor rupture.
• During refrigerant recovery, ensure both valves are fully closed and power is disconnected before detaching the connection pipe. If the compressor starts running with the stop valve open and the connection pipe not connected, air will be sucked in, causing pressure rise or compressor rupture.
• When installing, ensure the connection pipe is securely connected before the compressor starts.
• Do not install in places with leaked corrosive or flammable gas, as it may cause explosions or accidents.
• Do not use extension cords for electrical connections. If the wire is too short, contact an authorized service center for a proper electric wire. Poor connections can lead to electric shock or fire.
• Use specified wire types for electrical connections between indoor and outdoor units. Firmly clamp wires to avoid external stress on terminals. Insufficient capacity wires, wrong connections, or insecure terminals can cause electric shock or fire.

NOTICE: Please contact the local agent for installation. Do not use unqualified power cords.

Tools for Installation

• Level meter
• Screwdriver
• Impact drill
• Drill head
• Pipe expander
• Torque wrench
• Open-end wrench
• Pipe cutter
• Leakage detector
• Vacuum pump
• Pressure meter
• Inner hexagon spanner
• Measuring tape

Selection of Installation Location

Basic requirement

Installing the unit in the following places may cause malfunction. If unavoidable, consult the local dealer:

1. Places with strong heat sources, vapors, flammable or explosive gas, or volatile objects.
2. Places with high-frequency devices (e.g., welding machines, medical equipment).
3. Places near coast areas.
4. Places with oil or fumes in the air.
5. Places with sulfureted gas.
6. Other places with special circumstances.
7. The appliance shall not be installed in a laundry room.
8. Not allowed to be installed on unstable or moving base structures (e.g., trucks) or in corrosive environments (e.g., chemical factories).

Indoor unit

1. No obstructions near air inlet and outlet.
2. Location where condensation water can disperse easily and won't affect others.
3. Convenient for connecting to the outdoor unit and near a power socket.
4. Out of reach for children.
5. Location should withstand the weight of the indoor unit without increasing noise and vibration.
6. The appliance must be installed 2.5m above the floor.
7. Do not install the indoor unit directly above electrical appliances.
8. Try to keep away from fluorescent lamps.

Safety precaution

1. Follow electric safety regulations during installation.
2. Use qualified power supply circuit and air switch according to local safety regulations.
3. Ensure power supply matches air conditioner requirements. Unstable power supply or incorrect wiring may cause malfunction. Install proper power supply cables.
4. Properly connect the live wire, neutral wire, and grounding wire of the power socket.
5. Cut off power supply before any electrical or safety work.
6. Do not connect power before installation is finished.
7. If the supply cord is damaged, it must be replaced by the manufacturer, its service agent, or similarly qualified persons to avoid a hazard.
8. The temperature of the refrigerant circuit will be high; keep the interconnection cable away from the copper tube.
9. The appliance shall be installed in accordance with national wiring regulations.
10. Installation must be performed in accordance with NEC and CEC requirements by authorized personnel only.

Grounding requirement

1. The air conditioner is a Class I electrical appliance and must be properly grounded with a specialized grounding device by a professional. Ensure effective grounding to prevent electric shock.
2. The yellow-green wire is the grounding wire and cannot be used for other purposes.
3. Grounding resistance should comply with national electric safety regulations.
4. The appliance must be positioned so that the plug is accessible.
5. An all-pole disconnection switch with a contact separation of at least 3mm in all poles should be connected in fixed wiring.

Specification of connection wires for indoor units and outdoor units

Installation of Indoor Unit

Step 1: Choose installation location

Recommend the installation location to the client and confirm it.

NOTE: Pay attention to dust prevention and take relevant safety measures when opening the hole.

Step 2: Install wall-mounting frame

1. Hang the wall-mounting frame on the wall. Adjust it to a horizontal position using a level meter and mark the screw fixing holes.
2. Drill the screw fixing holes on the wall with an impact drill (use a drill head matching the plastic expansion particle). Insert the plastic expansion particles into the holes.
3. Fix the wall-mounting frame with tapping screws. Check if it's firmly installed by pulling it. If the plastic expansion particle is loose, drill another fixing hole nearby.

NOTE: The wall panel is for illustrative purposes only. Refer to actual installation. Refer to actual circumstances for the number and position of screws.

Step 3: Open piping hole

1. Choose the piping hole position based on the outlet pipe direction. The hole should be slightly lower than the wall-mounted frame.
2. When leading the pipe from the left or right, cut off the corresponding hole on the bottom case.
3. Open a piping hole (55 or 70mm diameter) at the selected outlet pipe position. To ensure smooth drainage, slant the piping hole slightly downward towards the outdoor side with a gradient of 5-10°.

Step 4: Outlet pipe

The pipe can be led out to the right, rear right, left, or rear left.

Step 5: Connect the pipe of indoor unit

1. Align the pipe joint with the corresponding bellmouth.
2. Pre-tighten the union nut by hand.
3. Adjust torque using the provided chart. Place an open-end wrench on the pipe joint and a torque wrench on the union nut. Tighten the union nut.
4. Wrap the indoor pipe and connection pipe joint with insulating pipe, then secure with tape.

Hex nut diameter & Tightening torque (N.m):

Step 6: Install drain hose

1. Connect the drain hose to the indoor unit's outlet pipe.
2. Bind the drain hose and outlet pipe with tape.

NOTE: Add insulating pipe to the indoor drain hose to prevent condensation. Plastic expansion particles are not provided.

Step 7: Connect wire of indoor unit

NOTICE: All wires of indoor and outdoor units should be connected by a professional. If the power connection wire is insufficient, contact the supplier. Avoid extending the wire yourself. For units with a plug, the plug must be reachable after installation. For units without a plug, an air switch must be installed in the line, with all-pole parting and a contact parting distance of more than 3mm.

1. Open the panel, remove the screw on the wiring cover, and take down the cover.
2. Route the power connection wire through the cable-cross hole at the back of the indoor unit and pull it out from the front.
3. Remove the wire clip. Connect the power connection wire to the wiring terminal according to color. Tighten the screw and secure the wire with the wire clip.
4. Put the wiring cover back and tighten the screw.
5. Close the panel.

WARNING: Communication cables should be laid out through cabling trough, conduit tube, or cable channel; otherwise, it may cause electric shock or death.

NOTICE: The wiring board is for reference only; refer to the actual one.

Step 8: Bind up pipe

1. Bind the connection pipe, power cord, and drain hose together with the band.
2. Reserve sufficient length of drain hose and power cord for installation when binding. When binding to a certain degree, separate the indoor power and then the drain hose.
3. Bind them evenly.
4. The liquid pipe and gas pipe should be bound separately at the end.

NOTE: The power cord and control wire should not cross or wind. The drain hose should be bound at the bottom.

Step 9: Hang the indoor unit

1. Place the bound pipes into the wall pipe and pass them through the wall hole.
2. Hang the indoor unit on the wall-mounting frame.
3. Stuff the gap between pipes and the wall hole with sealing gum.
4. Fix the wall pipe.
5. Check if the indoor unit is installed firmly and close to the wall.

NOTE: Do not bend the drain hose excessively to prevent blockage.

Test and Operation

Check after installation

Check according to the following requirements after installation is completed:

Test operation

1. Preparation of test operation:
   • The client approves the air conditioner.
   • Specify important notes for the air conditioner to the client.
2. Method of test operation:
   • Connect the power, press the On/Off button on the remote controller to start operation.
   • Press the MODE button to select AUTO, COOL, DRY, FAN, and HEAT to check if the operation is normal.
   • If the ambient temperature is lower than 16°C (61°F), the air conditioner cannot start cooling.

Pipe Expanding Method

NOTICE: Improper pipe expanding is the main cause of refrigerant leakage. Please expand the pipe according to the following steps:

1. A: Cut the pipe: Confirm pipe length according to the distance between indoor and outdoor units. Cut the required pipe with a pipe cutter.
2. B: Remove the burrs: Ensure the pipe is cut cleanly and remove any burrs.
3. C: Put on suitable insulating pipe.
4. D: Put on the union nut.
5. E: Expand the port.
6. F: Inspection.

Working Temperature Range

GWC09ATCXB-D6DNA4C/I, GWC12ATCXB-D6DNA4A/I, GWC18ATDXD-D6DNA4A/I, GWC24ATEXF-D6DNA4F/I, GWH09ATCXB-D6DNA4D/I, GWH12ATCXB-D6DNA4B/I, GWH18ATDXD-D6DNA4F/I, GWH24ATEXF-D6DNA4H/I

NOTE: Operating temperature range (indoor temperature): Cooling unit: 16°C (61°F) ~ 40°C (104°F). Heat pump unit: Cooling mode 16°C (61°F) ~ 40°C (104°F); Heating mode 5°C (41°F) ~ 30°C (86°F).

GWH30ATEXH-D6DNA1G/I, GWH36ATEXH-D6DNA1G/I

NOTE: Operating temperature range (indoor temperature): Cooling unit: 16°C (61°F) ~ 40°C (104°F). Heat pump unit: Cooling mode 16°C (61°F) ~ 40°C (104°F); Heating mode 5°C (41°F) ~ 30°C (86°F).

Specialist's Manual

Aptitude requirement for maintenance man (repairs should be done only by specialists)

1. Any person working on or breaking into a refrigerant circuit must hold a current valid certificate from an industry-accredited assessment authority, authorizing their competence to handle refrigerants safely.
2. Servicing shall only be performed as recommended by the manufacturer. Maintenance and repair requiring assistance from other skilled personnel must be carried out under the supervision of a person competent in the use of flammable refrigerants.
3. Pipework, including material, routing, and installation, must include protection from physical damage during operation and service, and comply with national and local codes and standards (e.g., ASHRAE 15, IAPMO Uniform Mechanical Code, ICC International Mechanical Code, CSA B52). All field joints must be accessible for inspection before being covered.

Checks to the area

Before working on systems containing flammable refrigerants, safety checks are necessary to minimize the risk of ignition. For repair to the refrigerating system, comply with the following precautions:

• Work procedure: Work must be undertaken under a controlled procedure to minimize the risk of flammable gas or vapor presence.
• General work area: All maintenance staff and others in the local area must be instructed on the nature of the work. Work in confined spaces should be avoided.
• Checking for presence of refrigerant: The area must be checked with an appropriate refrigerant detector before and during work to ensure awareness of potentially toxic or flammable atmospheres. Ensure leak detection equipment is suitable for all applicable refrigerants (non-sparking, adequately sealed, or intrinsically safe).
• Presence of fire extinguisher: If hot work is to be conducted, appropriate fire extinguishing equipment must be readily available (e.g., dry powder or CO2 fire extinguisher adjacent to the charging area).
• No ignition sources: No person working on refrigerant systems that involve exposing pipework shall use ignition sources in a manner that could lead to fire or explosion. Keep all possible ignition sources, including smoking, sufficiently far from the site of installation, repairing, removing, and disposal. Survey the area around the equipment for flammable hazards or ignition risks before work. Display "No Smoking" signs.
• Ventilated area: Ensure the area is open or adequately ventilated before breaking into the system or conducting hot work. Ventilation should continue during work, safely dispersing any released refrigerant externally.

Checks to the refrigerating equipment

• When changing electrical components, ensure they are fit for purpose and to the correct specification. Always follow manufacturer's maintenance and service guidelines. Consult the manufacturer's technical department if in doubt.
• For installations using flammable refrigerants, check:
• The actual refrigerant charge is in accordance with the room size.
• Ventilation machinery and outlets are operating adequately and are not obstructed.
• If an indirect refrigerating circuit is used, check the secondary circuit for refrigerant presence.
• Markings on the equipment are visible and legible. Correct illegible markings and signs.
• Refrigerating pipe or components are installed where they are unlikely to be exposed to corrosive substances, unless constructed of corrosion-resistant materials or suitably protected.

Checks to electrical devices

Repair and maintenance to electrical components must include initial safety checks and component inspection procedures. If a fault compromises safety, electrical supply must not be connected until corrected. If immediate correction is not possible but operation must continue, use an adequate temporary solution and report it to the owner.

Initial safety checks include:

• Capacitors are discharged safely to avoid sparking.
• No live electrical components or wiring are exposed while charging, recovering, or purging the system.
• Continuity of earth bonding.

• Repair to sealed components: Sealed electrical components must be replaced.
• Repair to intrinsically safe components: Intrinsically safe components must be replaced.
• Cabling: Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges, or other adverse environmental effects, considering aging and vibration from compressors or fans.

Detection of flammable refrigerants

Under no circumstances should potential ignition sources be used for detecting refrigerant leaks. A halide torch or any other detector using a naked flame shall not be used.

Acceptable leak detection methods:

• Electronic leak detectors may be used, but sensitivity may need re-calibration for flammable refrigerants. Detectors must be calibrated in a refrigerant-free area and must not be a potential ignition source.
• Set detectors at a percentage of the LFL (Lower Flammable Limit) of the refrigerant and calibrate to the refrigerant used (25% maximum).
• Leak detection fluids are suitable for most refrigerants, but avoid detergents containing chlorine, as chlorine can react with refrigerant and corrode copper pipework. Examples include bubble method and fluorescent method agents.

NOTE: If a leak is suspected, remove/extinguish all naked flames. If a leak requiring brazing is found, recover all refrigerant from the system or isolate it in a part remote from the leak. Refrigerant removal must follow regulations.

Removal and evacuation

When breaking into the refrigerant circuit for repairs, conventional procedures shall be used, but best practice must be followed for flammable refrigerants due to flammability concerns.

Procedure:

• Safely remove refrigerant following local and national regulations.
• Evacuate.
• Purge the circuit with inert gas (optional for A2L).
• Evacuate (optional for A2L).
• Continuously flush or purge with inert gas when using flame to open the circuit.
• Open the circuit.

Refrigerant charge shall be recovered into correct recovery cylinders if venting is not allowed. For appliances with flammable refrigerants, purge the system with oxygen-free nitrogen to render it safe. This may need repeating. Compressed air or oxygen shall not be used for purging. For appliances with flammable refrigerants, purging shall be achieved by breaking the vacuum with oxygen-free nitrogen and filling until working pressure is achieved, then venting to atmosphere, and finally pulling down to a vacuum (optional for A2L). Repeat until no refrigerant remains (optional for A2L). When the final oxygen-free nitrogen charge is used, vent to atmospheric pressure to allow work. The vacuum pump outlet shall not be near potential ignition sources, and ventilation must be available.

Charging procedures

In addition to conventional charging procedures, follow these requirements:

• Ensure no contamination of different refrigerants.
• Hoses or lines should be as short as possible.
• Cylinders shall be kept in an appropriate position.
• Ensure the refrigerating system is earthed before charging.
• Label the system upon completion of charging.
• Do not overfill the refrigerating system.
• Pressure-test the system with appropriate purging gas before recharging.
• Leak-test the system upon completion of charging but before commissioning. A follow-up leak test shall be carried out before leaving the site.

Decommissioning

The technician must be familiar with the equipment. It is recommended to recover all refrigerants safely. Before starting, take an oil and refrigerant sample if analysis is required. Ensure electrical power is available.

1. Become familiar with the equipment and its operation.
2. Isolate the system electrically.
3. Ensure: mechanical handling equipment is available if needed; all personal protective equipment is available and used correctly; the recovery process is supervised; recovery equipment and cylinders conform to standards.
4. Pump down the refrigerant system, if possible.
5. If a vacuum is not possible, use a manifold to remove refrigerant from various parts.
6. Place the cylinder on scales before recovery.
7. Start the recovery machine according to instructions.
8. Do not overfill cylinders (max 80% volume liquid charge).
9. Do not exceed the maximum working pressure of the cylinder.
10. Promptly remove cylinders and equipment after filling, and close all isolation valves.
11. Recovered refrigerant shall not be charged into another system unless cleaned and checked.

Labelling

Equipment shall be labelled stating it has been decommissioned and emptied of refrigerant, with date and signature. For appliances with flammable refrigerants, ensure labels state the equipment contains flammable refrigerant.

Recovery

When removing refrigerant for servicing or decommissioning, recover it safely. Use only appropriate refrigerant recovery cylinders. Ensure enough cylinders are available for the total system charge. Cylinders must be designated for the recovered refrigerant and labelled accordingly. Cylinders must have a pressure-relief valve and shut-off valves in good working order. Empty recovery cylinders should be evacuated and, if possible, cooled before recovery.

Recovery equipment must be in good working order, with instructions available, and suitable for flammable refrigerant recovery. Consult the manufacturer if in doubt. Calibrated weighing scales must be available and in good working order. Hoses must have leak-free disconnect couplings and be in good condition. Recovered refrigerant shall be processed according to local legislation in the correct recovery cylinder, with the relevant waste transfer note arranged. Do not mix refrigerants in recovery units or cylinders. If compressors or compressor oils are removed, ensure they are evacuated to an acceptable level to prevent flammable refrigerant remaining in the lubricant. Do not heat the compressor body with an open flame or other ignition sources to accelerate this process. Oil draining from a system must be carried out safely.

Transportation, marking and storage for units

Transport of equipment containing flammable refrigerants: Additional transportation regulations may exist. The maximum number of pieces of equipment or configuration permitted to be transported together will be determined by applicable transport regulations.

Marking of equipment using signs: Signs for similar appliances in a work area are generally addressed by local regulations. Ensure all required signs are maintained and employees receive suitable instruction and training on their meaning and required actions. Avoid placing too many signs together. Pictograms should be simple and contain only essential details.

Disposal of equipment using flammable refrigerants: See national regulations.

Storage of equipment/appliances: Storage should be in accordance with applicable regulations or instructions, whichever is more stringent. Avoid other heat sources, direct sunlight, and places where inflammable gas may leak.

Storage of packed (unsold) equipment: Storage package protection should prevent mechanical damage to the equipment inside from causing a refrigerant charge leak. The maximum number of pieces of equipment permitted to be stored together will be determined by local regulations.