CARRIER 40VD028H-7S-QEE (01) PDF Document

Your CARRIER 40VD028H-7S-QEE air conditioning product is marked with a symbol indicating that electrical and electronic products should not be mixed with unsorted household waste. Do not attempt to dismantle the system yourself. The dismantling of the air conditioning system, including the treatment of refrigerant, oil, and other parts, must be done by a qualified installer in accordance with relevant local and national legislation.

Air conditioners must be treated at a specialized treatment facility for reuse, recycling, and recovery. By ensuring the product is disposed of correctly, you will help prevent potential negative consequences for the environment and human health. The battery must be removed from the remote controller and disposed of separately in accordance with relevant local and national legislation.

The CARRIER 40VD028H-7S-QEE consists of the main indoor unit which is connected to an air duct via a soft connection. The unit has an air inlet port where air is drawn in and an air outlet port where conditioned air is expelled.

Improper installation can lead to severe accidents. Please follow these warnings for your CARRIER 40VD028H-7S-QEE:

• Contact a professional installer for installation, repair, and service. Improper installation can result in water leakage, electric shocks, or fire.

• Ensure the installation location can bear the weight of the air conditioner. Installing on weak structures like metal burglar-proof nets can lead to the machine dislodging and causing injury.

• The installation must be strong enough to withstand typhoons and earthquakes to prevent accidents.

• Select wiring according to applicable codes and standards and ensure terminal connections are secure to prevent shock or fire.

• While placing or reinstalling the unit, do not let air enter the refrigeration cycle system. Air in the system can lead to cracking or physical injuries due to abnormally high pressure.

• Use accompanying or specific spare parts during installation to avoid water leakage, electric shocks, fire, or refrigerant leakage.

• To prevent harmful gases from entering the room, do not drain water from the drainpipe into a sanitation pipe that could contain harmful gases like sulfurated gas.

• Do not install the air conditioner where flammable gas leakage might occur, as this could result in fire.

• Properly mount and insulate the drainpipe according to the manual to ensure smooth drainage and prevent condensation and water leakage.

• Properly insulate the refrigerant gas and liquid pipes to prevent condensation and water damage from dripping.

For safe operation of your CARRIER 40VD028H-7S-QEE, please observe the following:

• The air conditioner must be effectively grounded. Electric shocks may occur if it’s ungrounded or improperly grounded. The earthing wire should not be connected to gas pipes, water pipes, lightning rods, or telephones.

• A breaker for electricity leakage should be mounted to prevent accidents like electric shocks.

• Do not place heating apparatus under the indoor units, as this might distort the units.

• Do not place flammable items in the direct path of the air from the conditioner.

• Do not place plants and animals in the direct path of the wind from the air conditioner, as it could harm them.

• This appliance is not intended for the preservation of food, living creatures, precision instruments, or artworks.

• Use a fuse with the proper capacity.

• To avoid electric shock, do not touch the switch with wet hands.

• Close windows to keep outdoor air from entering. Use curtains or shutters to avoid sunlight.

• Stop the unit and switch off the manual power when cleaning it.

• Do not clean the unit with water, as it may cause an electric shock.

• Do not place or direct flammable sprays at the air conditioner, which may cause a fire.

• This appliance is not intended for use by persons with reduced physical, sensory, or mental capabilities unless they are supervised or have been given instructions by a person responsible for their safety.

Always switch off and disconnect the CARRIER 40VD028H-7S-QEE from the power supply before cleaning to prevent electric shock and injury.

1. To clean the filter, use a vacuum cleaner or water to remove dust.

2. If there is excessive dust, you can use a fan or directly spray a special cookware detergent on the air inlet grid. Wait 10 minutes, then clean it with water.

3. For heavy dust, use a soft-hair brush and a mild detergent to clean.

4. Allow the filter to dry completely before reinstalling it.

Attention: Do not clean with hot water over 50°C to avoid fading or distortion. Do not dry the filter on a fire, as this might cause the cleaner to ignite.

Before calling for service for your CARRIER 40VD028H-7S-QEE, please check the following common symptoms and their potential causes:

Immediately stop operation, disconnect the manual supply switch, and contact after-service personnel if: buttons are inflexibly actuated, the fuse and breaker have burnt, there are foreign objects and water in the refrigerant, or other abnormal conditions occur.

Proper drainpipe installation is crucial for your CARRIER 40VD028H-7S-QEE.

• Keep a downward gradient of 1/50 to 1/100 for the drain pipes and avoid lobing or curving.

• When connecting the drainpipe to the equipment, do not apply too much force. Position the piping as close to the equipment as possible.

• For the drainpipe, a general-purpose hard PVC tube can be used. Insert the end of the PVC tube into the wash port and fasten it with a drainage hose and thread clip. Do not use binding agents or glues.

• When used for multiple equipment, the public piping should be about 100mm lower than the wash ports.

• The hard PVC tube in the room must be insulated.

• Do not place drainpipes in areas with irritant gases or directly into a sewer where gases with sulfur might be present.

• A backwater bend should be designed to prevent water leakage caused by sub-atmospheric pressure in the drain pan.

• The pump’s maximum lift reaches 600mm. Follow the recommended installation dimensions in the manual.

Testing the Drainage System:

1. After testing the electrical system, test the drainage system.

2. During testing, ensure water flows correctly through the piping without any leakage at the connections.

3. In a new house, test the drainage system before fitting the ceiling.

4. The test should be performed even if the unit is installed in a season when heating is needed.

5. To check the system, provide about 1000cc of water to the equipment via the air outlet port with a feed pump and check the drainage during refrigerating operation.

Follow these procedures for connecting the refrigerant tubing on your CARRIER 40VD028H-7S-QEE.

1. Proceed with the flare tube connecting operation. Dual wrenches must be used for connecting the indoor unit tubing.

2. Use the correct mounting torque for the tubing connections. Refer to the table below:

3. Add refrigerant according to the installation instructions for the outdoor units. Compressor failure can be caused by filling too much or too little refrigerant.

The following table lists the fault descriptions for the error codes on the CARRIER 40VD028H-7S-QEE.

The dipswitches on the indoor unit PCB of your CARRIER 40VD028H-7S-QEE are used to configure various settings. In the tables, 1 represents ON and 0 represents OFF.

SW01 Settings:

Note: A wired controller can be connected to at most 16 ultra-thin air-duct indoor units.

The 26°C Lock function on your CARRIER 40VD028H-7S-QEE is deactivated by default.

Activation: Press the “Health” button on the remote controller 8 times in 5 seconds. When you hear the beep 4 times, the function is activated.

Deactivation: Press the “Health” button on the remote controller 8 times in 5 seconds. When you hear the beep 2 times, the function is deactivated.

Before starting a test run on your CARRIER 40VD028H-7S-QEE, perform the following checks:

Before Test Run:

• Test the supply terminal tier (L, N terminals) and grounding points with a 500V mega-ohm meter. The resistance must be above 1MΩ. Do not operate if it is below 1MΩ.

• Connect to the power supply of outdoor units to energize the compressor’s heating belt. Power it on for 12 hours prior to operation to protect the compressor on startup.

• Check that the drainpipe and connection line installations are correct.

Installation Checkup:

• Check if the mains voltage is correct.

• Check for leakage at piping joints.

• Check if the connections of mains power and indoor & outdoor units are correct.

• Check if the serial numbers of the terminals match.

• Check if the installation place meets specifications.

• Check if there is too much noise.

• Check if the connecting line is fastened.

• Check if the connectors for tubing are heat insulated.

• Check if water is draining outside properly.

• Check if the indoor units are positioned correctly.

Ways of Test Run (Forced Run):

If the machine fails to start due to room temperature, you can initiate a forced run. This function is not available with a remote control.

• Set the wired controller to refrigerating/heating mode, then press the “ON/OFF” button for 5 seconds to enter the compulsive refrigerating/heating mode. Press the “ON/OFF” button again to quit compulsive running and stop the operation.

If a fault appears on your CARRIER 40VD028H-7S-QEE, consult the table below to understand the fault descriptions based on the code displayed on the wired controller or the flashing of the PCB LED5/Receiver Timer Lamp.