ActronAir MultiElite 2 MRC-075CS-3 User manual

That’s better. That’s Actron.
MultiElite 2
Multi Split System Air Conditioner
Model Numbers
MRC-075CS-3
MRC-100CS-4
MRC-120CS-5
CAUTION:
The system is charged with flammable refrigerant, safety checks are necessary to ensure that the
risk of ignition is minimised.
IMPORTANT NOTE:
Please read this manual carefully before installing or operating your air conditioning unit. Make sure to save this manual for
future reference.
Owner's Manual

Owner's Manual - MultiElite 2 Split System
Doc. No. 9590-4012 Ver. 2 220616
Owner's Manual Multi Split System
2
Table of Contents
. General Information ........................................................................................................................... 
. Safety Instructions ............................................................................................................................. 
. Unit Parts ............................................................................................................................................ 
. Wall Mounted Type 
. Bulkhead Type 
. Mini Cassette Type 
. Operating Conditions ........................................................................................................................ 
. Features .............................................................................................................................................. 
. Unit Operation ................................................................................................................................... 
. Manual Operations ..........................................................................................................................
. Care and Maintenance .....................................................................................................................
. Troubleshooting ..............................................................................................................................
. Error Codes (Indoor Unit) ................................................................................................................ 
This manual is a controlled document which contains confidential and proprietary information.
Distribution, modification, copying and/or reproduction are prohibited without written consent from ActronAir
Product design and specifications are subject to change without prior notice for product improvement.
READ SAFETY PRECAUTIONS BEFORE INSTALLATION
Incorrect installation due to ignoring instructions can cause serious damage or injury. The seriousness of
potential damage or injuries is classified as either a WARNING or CAUTION.
CAUTION
Failure to observe a caution may result in injury or equipment damage
Failure to observe a caution may result in death or serious injury.
WARNING

Owner's Manual Multi Split System
Owner's Manual - MultiElite 2 Split System
Doc. No. 9590-4012 Ver. 2 220616
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. General Information
CONGRATULATIONS on your purchase of an ActronAir air conditioning unit! This unit has been designed and engineered
to provide optimum air conditioning and to achieve maximum energy efficiency.
Your air conditioning system has been manufactured from the highest quality materials. Numerous “in house” and
“external” inspections and test procedures were conducted to your air conditioning unit to ensure satisfactory operation.
This guide provides operation instructions specific to your split indoor unit. Read this manual thoroughly to ensure safe
operation of your air conditioning system.
. Safety Instructions
•Only licensed HVAC technicians* should service this air conditioning equipment. Improper service or alteration by
an unqualified technician could result in significant and major damage to the product or property which may render
your warranty null and void. Such unqualified service could also lead to severe physical injury or death. Follow all safety
instructions in this literature and all warning labels that are attached to the equipment.
•Prevailing WH&S regulations must be observed and will take precedence to the safety instructions contained on this
manual. Safe work practices and environment must be the paramount importance in the performance of all the service
procedures.
•This appliance is not intended for use by young children or infirm persons unless they have been adequately supervised
by a responsible person to ensure that they can use the appliance safely. Young children should be supervised to ensure
that they do not play with the appliance.
*Qualifications required will be appropriate Electrical, Refrigeration and Refrigerant Handling License and Training
dependent on local State/Territory regulations.
DANGER
Hazardous Voltage - Risk of Electrocution.
Turn Off the power from main isolator before proceeding with any service and maintenance work of the unit. Observe proper
LOCK-OUT/TAG-OUT (LOTO) procedures for electrical appliances in order to prevent accidental switching-on of the power
supply. Extreme care and caution must be observed should there be a need to work on live circuit.
WARNING
• If any abnormal situation arises (like burning smell), turn of the power supply and call your HVAC technician for instructions
to avoid electric shock, fire or injury.
• DO NOT let the indoor unit or the controller get wet. It may cause electric shock or fire.
• DO NOT insert fingers, rods or other objects into the air inlet or outlet. This may cause injury, since the fan may be rotating
at high speeds.
• DO NOT use a flammable spray such as hair spray, lacquer or paint near the unit. This may cause fire or combustion.
PRODUCT INSPECTIONS
• Fully check your air conditioning unit and all items against the bill of loading upon receiving your shipment. Inspect the unit,
components and accessories for any sign of shipping damage. If there is any damage to the unit, contact ActronAir
Customer Care immediately on: 1300 522 722.
• Check the unit nameplate to verify the model, serial number, electrical rated specifications and details are correct.

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CODES, REGULATIONS AND STANDARDS
• The installer assumes responsibility to ensure that unit installation complies with the relevant council, state & federal
codes, regulations and building code standards. All electrical wiring must be in accordance with current electrical authority
regulations and all wiring connections to be as per electrical diagram provided with the unit.
CAUTION
• DO NOT inspect the unit by yourself. Ask a qualified HVAC technician to perform the inspection.
• To prevent product deterioration, do not use the air conditioner for preservation purposes (storage of food, plants, animals,
works of art, etc.).
• DO NOT operate the air conditioner with wet hands. It may cause electric shock.
• DO NOT touch the evaporator coils inside the indoor unit. The evaporator coils are sharp and may cause injury.
• DO NOT place items that might be affected by moisture damage under the indoor unit. Condensation can occur at a relative
humidity of 80%.
• DO NOT expose heat-producing appliances to cold air or place them under the indoor unit. This may cause incomplete
combustion or deformation of the unit due to the heat.
• If the air conditioner is used together with other heating devices, thoroughly ventilate the room to avoid oxygen deficiency.
• DO NOT climb onto or place objects on top of the outdoor unit.
• DO NOT operate the air conditioner when using fumigant insecticides. The chemicals may become layered with the unit and
endanger those who are hypersensitive to chemicals.
• DO NOT let children play with the air conditioner.
• DO NOT operate the air conditioner in a wet room (e.g. bathroom or laundry room). This can cause electrical shock and cause the
product to deteriorate.
• DO NOT insert fingers, rods or other objects into the air inlet or outlet. This may cause injury, since the fan may be rotating
at high speeds.
WARNING
This air-conditioning unit contains R-32 refrigerant (CLASS A2L) which is mildly flammable.
NOTE
• Service, maintenance, repairs and decommissioning of this unit must be performed by a licensed HVAC technician; qualified
to handle R-32 refrigerant.
• R-32 refrigerant is odourless, if the refrigerant gas comes into contact with fire, it may emit a poisonous gas.
• Do not continuously operate open flames and ignition sources in the room.

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Owner's Manual - MultiElite 2 Split System
Doc. No. 9590-4012 Ver. 2 220616
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. Unit Parts
NOTE
For multi-split type air conditioners, one outdoor unit can be matched to different types of indoor units. All of the pictures in
this manual are for illustration purposes only. Your air conditioner may be slightly different, if similar in shape. The following
pages introduce several kinds of indoor units that can be matched with the outdoor units.
03.01. Wall Mounted Type
Indoor
Item Unit Parts
1Panel Frame
2Top Air Intake Grille
(Return Air Filter Underneath)
3Front Panel
4Horizontal Louver
5LCD Display Window
6Vertical Louvre
7Manual Control Button
(behind the front panel)
8Remote Controller
Outdoor
Item Unit Parts
9Drain Hose, Refrigerant Connecting
Pipe
10 Connecting Cable
11 Refrigerant Pipe Valve
12 Fan Guard
Wall-mounted type
(A)
1
67
5
8
2
3
4
9
10
11
12

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03.02. Bulkhead Type
Indoor
Item Unit Parts
1Air Outlet
2Air Inlet
3Air Filter
4Control Box
5Wired Controller
Outdoor
Item Unit Parts
6Drain Hose, Refrigerant Connecting
Pipe
7Connecting Cable
8Refrigerant Pipe Valve
9Fan Guard
4
1
5
8
6
9
2
3
4
7

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Owner's Manual - MultiElite 2 Split System
Doc. No. 9590-4012 Ver. 2 220616
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03.03. Mini Cassette Type
Indoor
Item Unit Parts
1Drain Pump (drain water from indoor unit)
2Drain Hose
3Air Outlet
4Air Inlet
5Return Grill
6Display Panel
7Wired Controller
Outdoor
Item Unit Parts
8Refrigerant Connecting Pipe
9Connecting Cable
10 Refrigerant Pipe Valve
11 Fan Guard
Unit Parts
And Major
Functions
1
5
11
8
2
3
10
6
9
4
7

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. Operating Conditions
Operating Temperature
Optimal performance for the COOL, HEAT, and DRY modes can be achieved in the following temperature ranges. When
your air conditioner is used outside of these ranges, certain safety protection features will activate and cause the unit to
perform less than optimally.
COOL Mode HEAT Mode DRY Mode
Room Temperature 17°C to 32°C 0°C to 30°C 10°C to 32°C
Outdoor Temperature -15°C to 50°C -25°C to 30°C 0°C to 50°C
NOTE
Room relative humidity should be less than 80%. If the air conditioner operates in room with relative humidity greater than
80%, the surface of the air conditioner may attract condensation. Please sets the vertical air flow louvre to its maximum angle
and set HIGH fan mode.
To further optimize the performance of your unit, do the following:
•Keep doors and windows closed.
•Limit energy usage by using TIMER ON and TIMER OFF functions.
•Do not block air inlets or outlets.
•Regularly inspect and clean air filters.
. Features
Compressor Protection
•The compressor cannot restart for 3 minutes after it stops.
Hot Start
•The unit is designed not to blow cold air during HEAT mode, when the indoor heat exchanger is in one of the following
conditions and the set temperature has not been reached.
a. When heating has just started.
b. When the system is in defrost.
c. Low temperature heating.
•The indoor or outdoor fan stop running when the system is in defrost.
Defrosting
•Frosting may occur on the outdoor unit during a heat cycle when outdoor temperature is low and humidity is high
resulting in lower heating efficiency in the air conditioner.
•Under these conditions, the air conditioner will stop heating operations and start defrosting automatically.
•The defrost period may vary from 4 to 10 minutes, depending the outdoor temperature and the amount of frost
buildup on the outdoor unit.
Auto-Restart
In case of power failure, the system will immediately stop. When power returns, the Operation light on the indoor unit will
flash. To restart the unit, press the ON/OFF button on the remote control. If the system has an auto restart function, the
unit will restart using the same settings.
NOTE
Lightning or any electronic interference nearby may cause the unit to malfunction. If this happens, reset the power mains
(isolator). Press the ON/OFF button on the wired controller to restart operation.

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Owner's Manual - MultiElite 2 Split System
Doc. No. 9590-4012 Ver. 2 220616
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. Unit Operation
White Mist Emitting From The Indoor Unit
•A white mist may be generated due to a large temperature difference between air inlet and air outlet on COOL mode in
places with high relative humidity.
•A white mist may be generated due to moisture created in the defrosting process when the air conditioner restarts in
HEAT mode operation after defrosting.
Noise Coming From The Air Conditioner
•You may hear a low hissing sound when the compressor is running or has just stopped running. This sound is the sound
of the refrigerant flowing or coming to a stop.
•You may also hear a low squeaking sound when the compressor is running or has just stopped running. This is caused
by temperature heat expansion and cold contraction of the plastic parts in the unit when the temperature is changing.
•A noise may be heard due to the louver restoring itself to its original position when power is first turned on.
Dust Blowing Out From The Indoor Unit
This is happens when the air conditioner has not been used for a long time or during its first use.
Smell Emitting From The Indoor Unit
This is caused by the indoor unit giving off smells permeated from building materials, furniture, or smoke.
The Air Conditioner Turns To Fan Only Mode From Cool Or Heat Mode
When the indoor temperature reaches the set temperature setting, the compressor will stop automatically, and the air
conditioner turns to FAN only mode. The compressor will start again when the indoor temperature rises on COOL mode
or falls on HEAT mode to the set point.
Droplets of water may form on the surface of the indoor unit when cooling occurs in relatively high humidity (above 80%).
Adjust the horizontal louver to the maximum air outlet position and select HIGH fan speed
Energy Saving Tips
• DO NOT set the unit to excessive temperature levels.
•While cooling, close the curtains to avoid direct sunlight.
•Doors and windows should be kept closed to keep cool or warm air in the room.
• DO NOT place objects near the air inlet and outlet of the unit. This will reduce the efficiency of the unit.
•Set a timer and use the built-in SLEEP/ECONOMY mode if applicable.
•If you don’t plan to use the unit for a long time, remove the batteries from the remote control (if wireless remote
control is being used).
•Clean the air filter every two weeks. A dirty filter can reduce cooling or heating efficiency.
•Adjust louvers properly and avoid direct airflow.

Owner's Manual - MultiElite 2 Split System
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. Manual Operations
Operation Mode Selection
While two or more indoor units are simultaneously operating, make sure the modes do not conflict with each other. The
heat mode claims precedence over all other modes. If the unit initially started to operate in HEAT mode, the other units
can operate in HEAT mode only.
Example: If the unit initially started to operate under COOL (or FAN) mode, the other units can operate under any mode
except HEAT.
If one of the unit selects HEAT mode, the other operating units will stop operation and displays --.
Alternatively, the defrost and alarm indication light (if applicable) will light up, or the operation indication light will flash
rapidly, and the timer indication light will turn off ( for the floor and standing type).
Optimal Operation
To achieve optimal performance, please note the following:
•Adjust the direction of the air flow so that it is not blowing directly on people.
•Adjust the temperature to achieve the highest possible level of comfort. Do not adjust the unit to excessive
temperature levels.
•Close doors and windows in COOL mode or HEAT mode.
•Use the TIMER ON button on the remote controller to select a time you want to start your air conditioner.
•Do not place any object near the air inlet or air outlet, as the efficiency of the air conditioner may be reduced and the
air conditioner may stop running.
•Clean the air filter periodically, otherwise cooling or heating per conformance may be reduced.
•Do not operate unit with horizontal Louvre in closed position.
. Care and Maintenance
NOTES
Apart from filter cleaning, all other general maintenance and care of systems should be undertaken by a licensed technician.
Service, maintenance, repairs and decommissioning of this unit must be performed by a licensed HVAC technician; qualified
to handle R-32 refrigerant.
Maintenance Procedures
This section describes the procedures that must be performed as a part of normal maintenance program. Regular
servicing of equipment by licensed technician is highly recommended. Regular servicing of your unit helps in maintaining
its optimum performance and reliability. The checklist and service periods provided on this manual are guides only,
as some sites may require more frequent servicing. Always disconnect electrical power to the unit before performing
these procedures. It is always a safe practice to observe all safety warnings and cautions when conducting maintenance
tasks.
WARNING
Hazardous Voltage !
Always make sure that all power supply, including remote controls, are disconnected before performing maintenance.
Observe proper LOCK-OUT/TAG-OUT procedures to ensure that power cannot be inadvertently energised. Failure to
disconnect power before maintenance procedures can result in serious injury and/or death.
This unit is charged with R-32 mildly flammable refrigerant.