Fujitsu ASU12RLS, ASU9RLS, AOU9RLS, AOU12RLS Troubleshooting, Symptom Problem, Normal, Function

Page 16

TROUBLESHOOTING

 

 

In the event of a malfunction (burning smell, etc.), immediately stop operation, turn off the elec-

WARNING!

trical breaker or disconnect the power supply plug, and consult authorized service personnel.

 

 

Merely turning off the unit’s power switch will not completely disconnect the unit from the power

 

 

 

 

source. Always be sure to turn off the electrical breaker or disconnect the power supply plug to

 

 

ensure that power is completely off.

Before requesting service, perform the following checks:

 

Symptom

Problem

See Page

 

 

 

 

NORMAL

Doesn’t operate immedi-

● If the unit is stopped and then immediately started again, the com-

 

FUNCTION

ately:

pressor will not operate for about 3 minutes, in order to prevent

 

 

 

fuse blowouts.

—

 

 

● Whenever the Power Supply Plug is disconnected and then re-

 

 

 

 

 

connected to a power outlet, the protection circuit will operate for

 

 

 

about 3 minutes, preventing unit operation during that period.

 

 

 

 

 

 

Noise is heard:

● During operation and immediately after stopping the unit, the

 

 

sound of water flowing in the air conditioner’s piping may be

 

 

 

 

 

 

heard. Also, noise may be particularly noticeable for about 2 to 3

 

 

 

minutes after starting operation (sound of coolant flowing).

—

 

 

● During operation, a slight squeaking sound may be heard. This is

 

 

 

the result of minute expansion and contraction of the front cover

 

 

 

due to temperature changes.

 

 

 

 

 

 

 

● During Heating operation, a sizzling sound may be heard occasional.

16

 

 

This sound is produced by the Automatic Defrosting operation.

 

 

 

 

 

 

 

 

Smells:

● Some smell may be emitted from the indoor unit. This smell is

 

 

 

the result of room smells (furniture, tobacco, etc.) which have

—

 

 

been taken into the air conditioner.

 

 

 

 

 

 

Mist or steam are

● During Cooling or Dry operation, a thin mist may be seen emitted

 

 

from the indoor unit. This results from the sudden Cooling of

 

 

emitted:

—

 

room air by the air emitted from the air conditioner, resulting in

 

 

 

 

condensation and misting.

 

 

 

 

 

 

 

● During Heating operation, the outdoor unit’s fan may stop, and

 

 

 

steam may be seen rising from the unit. This is due to Automatic

16

 

 

Defrosting operation.

 

 

 

 

 

 

 

 

Airflow is weak or stops:

● When Heating operation is started, fan speed is temporarily very

 

 

 

low, to allow internal parts to warm up.

 

 

 

● During Heating operation, if the room temperature rises above

—

 

 

the thermostat setting, the outdoor unit will stop, and the indoor

 

 

 

unit will operate at very low fan speed. If you wish to warm the

 

 

 

room further, set the thermostat for a higher setting.

 

 

 

 

 

 

 

● During Heating operation, the unit will temporarily stop opera-

 

 

 

tion (between 7 and 15 minutes) as the Automatic Defrosting mode

16

 

 

operates. During Automatic Defrosting operation, the DEFROST

 

 

 

 

 

Indicator Lamp (yellow) will flash.

 

 

 

 

 

 

 

● The fan may operate at very low speed during Dry operation or

6

 

 

when the unit is monitoring the room’s temperature.

 

 

 

 

 

 

 

 

 

● During SUPER QUIET operation, the fan will operate at very low

6

 

 

speed.

 

 

 

 

 

 

 

 

 

● In the monitor AUTO operation, the fan will operate at very low

6

 

 

speed.

 

 

 

 

 

 

 

 

Water is produced from

● During Heating operation, water may be produced from the out-

16

 

the outdoor unit:

door unit due to Automatic Defrosting operation.

 

 

 

 

 

 

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Contents Mode D’EMPLOI Contents Safety PrecautionsEconomy Maintenance Features and FunctionsSleep Timer Timer MIN. Heat Coil DRY En-3 Name of Parts Preparation Operation To Stop Operation Press the START/STOP button b8 About Mode OperationAbout Auto Changeover Operation Timer Operation OFF timer or on timer operationTo Use the Program timer Press the START/STOP button b8 Set the desired times for OFF timer and on timerSleep Timer Operation About the Sleep TimerDuring Heating operation During Cooling/Dry operationAdjusting the Direction of AIR Circulation Types of Air flow Direction SettingSwing Operation Coil DRY OperationTo select Swing Operation Press the Swing button b11 About Swing OperationTimer Sleep FAN Speed Swing Minimum Heat OperationManual Auto Operation About the Minimum Heat OperationCleaning and Care Replace them by two new Air cleaning filters Install the two Air filters and close the Open PanelReplacing dirty Air cleaning filters Open the Open Panel and remove the Air fil- tersTroubleshooting Symptom ProblemNormal FunctionEvent of Power Interruption Operating TipsOperation and Performance Auto RestartSpecification Temperature and Humidity Range

AOU12RLS, Heat & Cool Model (Reverse Cycle), ASU12RLS, AOU9RLS, ASU9RLS specifications

The Fujitsu ASU9RLS, AOU12RLS, ASU12RLS, and AOU9RLS models represent the pinnacle of advanced climate control solutions, combining energy efficiency with exceptional performance in both heating and cooling applications. These reverse cycle air conditioning systems are designed to cater to a wide range of residential and light commercial environments, ensuring comfort throughout the year.

One of the standout features of these models is the inverter technology that optimizes energy consumption. By continuously adjusting the compressor speed to maintain the desired temperature, these units minimize fluctuations, thereby enhancing comfort and reducing energy bills. This technology also leads to quieter operation, making it an excellent choice for homes and offices where noise level is a concern.

The ASU series offers a sleek and modern design, allowing it to blend seamlessly into various interior decors. User-friendly remote controls and smart sensors enable easy management and monitoring of temperature settings, ensuring users can maintain their ideal comfort levels with minimal effort. Additionally, the models are equipped with a range of air filtration systems, including washable filters that effectively capture dust and allergens, contributing to healthier indoor air quality.

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Durability is another hallmark of Fujitsu's design philosophy. The units are built with high-quality materials, ensuring longevity and resistance to various environmental conditions. Advanced technology is also used to ensure that the outdoor units can operate effectively even in extreme weather conditions, providing reliable performance year-round.

In summary, the Fujitsu ASU9RLS, AOU12RLS, ASU12RLS, and AOU9RLS models offer an ideal combination of energy efficiency, exceptional performance, and advanced technology. Their inverter systems, stylish design, effective filtration, and durability make them an excellent choice for anyone looking to enhance their indoor climate control while maintaining energy efficiency. Whether for a cozy home or a productive office space, these reverse cycle units are engineered to deliver comfort and reliability in any season.
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