Fujitsu AWU36CX manual Troubleshooting, Symptom Problem

Page 15

TROUBLESHOOTING

Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).

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 electrical breaker is turned off then on again or the

—

 

 

power supply plug is disconnected and then reconnected, the pro-

 

 

 

tection 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 occa-

 

 

 

sionally. This sound is produced by the Automatic Defrosting op-

15

 

 

eration.

 

 

 

 

 

 

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

 

 

emitted:

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

—

 

 

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 the Auto-

15

 

 

matic 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 to a higher setting.

 

 

 

 

 

 

 

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

 

 

 

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

15

 

 

operates. During the Automatic Defrosting operation, the OPERA-

 

 

 

 

 

TION indicator lamp will flash.

 

 

 

 

 

 

 

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

6

 

 

when the unit is monitoring the room’s temperature.

 

 

 

 

 

 

 

 

 

● 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-

15

 

the outdoor unit:

door unit due to the Automatic Defrosting operation.

 

 

 

 

 

 

En-14

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Contents Wall Mounted Type Safety Precautions ContentsAIR Cleaning Filter Optional Features and FunctionsEn-3 Name of PartsVertical Swing button Timer Indicator Lamp yellow Swing Indicator Lamp orangeRed Vertical SET buttonPreparation To Set the Fan Speed Press the FAN Control button K To Select Mode Operation Press the START/STOP button LOperation To Set the Thermostat Press the SET TEMP. buttons HDry About Mode OperationHeat & Cool Model Reverse cycle HeatingTimer Operation Manual Auto Operation Sleep Timer OperationTo Change the Timer Settings About the Sleep timerTypes of Air flow Direction Setting Adjusting the Direction of AIR CirculationVertical Air Direction Adjustment Horizontal Air Direction AdjustmentSwing Operation About Swing OperationAir flow direction set Range of swing Clean the intake filters Cleaning and CareCleaning the Intake Filters Remove the intake filters Install the intake filtersSelecting the Remote Control Unit Signal Code Selecting the Remote Control Unit Signal CodeInitially set to Press Symptom Problem TroubleshootingLow Ambient Cooling When Indoor and Outdoor Temperatures are HighOperating Tips Operation and PerformanceAuto Restart Temperature and Humidity RangeEvent of Power Interruption Outdoor Indoor Unit Temperature Humidity

AWU36CX specifications

The Fujitsu AWU36CX is a standout model in the realm of air conditioning, blending cutting-edge technology with impressive energy efficiency. Designed primarily for residential and small commercial applications, the AWU36CX exemplifies Fujitsu's commitment to delivering high-performance climate control solutions.

One of the prominent features of the AWU36CX is its inverter technology. This advanced system allows for precise control of the compressor speed, altering the cooling and heating capacity in real time according to the needs of the space. As a result, the AWU36CX can maintain a consistent indoor temperature while minimizing energy consumption. This not only enhances comfort but also translates into significant savings on energy bills over time.

The AWU36CX boasts a cooling capacity of 3.6 kW, making it suitable for medium-sized rooms or open-plan living spaces. On the heating front, this unit also provides effective warmth, ensuring year-round comfort. Its temperature range adaptability allows it to operate efficiently even in low outdoor temperatures, providing reliable heating during colder months.

Another key feature is its advanced filtration system. The AWU36CX is equipped with a multi-layer filter that effectively captures dust, allergens, and other airborne particles, promoting a healthier indoor environment. Users can expect improved air quality, making it an excellent choice for households with allergy sufferers or respiratory issues.

Fujitsu has also integrated smart technology into the AWU36CX. Users can enjoy convenient control via a remote or, in some cases, through smartphone applications. This allows for enhanced flexibility and ease of use, as well as the ability to program the unit to match their schedules, thereby optimizing energy consumption.

Furthermore, the AWU36CX is designed with quiet operation in mind. The unit functions at a low noise level, making it ideal for bedrooms or quiet spaces where noise could be disruptive. This characteristic makes it a favored choice among those who prioritize tranquility in their living environments.

In terms of build quality and design, the AWU36CX showcases a sleek and modern appearance. Its compact dimensions make it suitable for various installation settings, and it can seamlessly blend with contemporary interior aesthetics.

In conclusion, the Fujitsu AWU36CX stands out with its inverter technology, energy efficiency, advanced filtration, smart control options, quiet operation, and modern design. It is a reliable and effective air conditioning solution that balances performance and comfort, making it a popular choice for both homes and small businesses.
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