Fujitsu Inverter Halcyon ASU12RMLQ Operating Manual Download Page 17

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TROUBLESHOOTING

In the event of a malfunction (burning smell, etc.), immediately stop operation, 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 disconnect the Power Supply Plug or turn off your circuit
breaker to ensure that power is completely off.

Before requesting service, perform the following checks:

WARNING!

Symptom

Doesn’t operate immedi-
ately:

Noise is heard:

Smells:

Mist or steam are
emitted:

Airflow is weak or stops:

Water is produced from
the outdoor unit:

The AIR CLEAN indicator
lamp (green) will begin to
slowly flash (as shown in
the figure):

The AIR CLEAN indicator
lamp (green) will begin to
flash quickly (as shown in
the figure):

Problem

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

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 occasionally.
This sound is produced by the Automatic Defrosting operation.

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.

During Cooling or Dry operation, a thin mist may be seen 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-
matic Defrosting operation.

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
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
when the unit is monitoring the room’s temperature.

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

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

In case of Multi-type unit, if multiple units are operated in differ-
ent operation modes as shown below, the units operated after-
ward will stop and the OPERATION indicator lamp (red) will flash.
Heating mode and cooling mode (or dry mode)
Heating mode and fan mode

During Heating operation, water may be produced from the out-
door unit due to the Automatic Defrosting operation.

After approximately 400 hours of Air Cleaning Mode use, the AIR
CLEAN indicator lamp will begin to flash slowly (as shown in the
figure). When this occurs, please stop the system, remove the
mains socket and carry out maintenance on the dust collecting
unit’s air filter.

After approximately 500 hours of Air Cleaning Mode use, the AIR
CLEAN indicator lamp will begin to flash quickly (as shown in the
figure). At this point, Air Cleaning will stop functioning. Please
stop the system, remove the mains socket and carry out mainte-
nance on the dust collecting unit’s air filter.

See Page

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NORMAL

FUNCTION

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Summary of Contents for Inverter Halcyon ASU12RMLQ

Page 1: ...ASU9RMLQ ASU12RMLQ AOU24RML AOU36RML ...

Page 2: ......

Page 3: ...e Control Unit E MASTER CONTROL button F SET TEMP buttons 5 G Signal Transmitter H TIMER MODE button I FAN CONTROL button J START STOP button K AIR CLEAN button L SET button M SWING button N RESET button O CLOCK ADJUST button P TEST RUN button Perform a test run only when installing the air conditioner If the signal to perform a test run is received during normal opera tion the air conditioner s t...

Page 4: ...uence The sequence can involve one transition from OFF timer to ON timer or from ON timer to OFF timer within a twenty four hour pe riod MILDEW RESISTANT FILTER The AIR FILTER has been treated to resist mildew growth thus allowing cleaner use and easier care SUPER QUIET OPERATION When the FAN CONTROL button is used to select QUIET the unit begins super quiet operation the indoor unit s air flow is...

Page 5: ... on the re verse side to open it Slide in the direction of the arrow while pressing the mark 2 Insert batteries Be sure to align the battery polarities correctly 3 Close the battery compartment lid Set the Current time 1 Press the CLOCK ADJUST button Fig 5 O Use the tip of a ball point pen or other small object to press the button 2 Use the SET TIME buttons Fig 5 S to adjust the clock to the curre...

Page 6: ...peed Press the FAN CONTROL button Fig 5 I Each time the button is pressed the fan speed changes in the following order AUTO HIGH MED LOW QUIET About three seconds later the entire display will reappear When set to AUTO Heating Fan operates so as to optimally circulate warmed air However the fan will operate at very low speed when the temperature of the air issued from the indoor unit is low Coolin...

Page 7: ...es after which it will switch to the selected fan setting This period of time is provided to allow the indoor unit to warm up before beginning full operation When the room temperature is very low frost may form on the outside unit and its performance may be reduced In order to remove such frost the unit will automatically enter the defrost cycle from time to time During Automatic Defrosting operat...

Page 8: ...o stop the operation install the intake filter and then use the START STOP button to restart the operation Use the FAN CONTROL button to change the fan speed Refer to page 6 The plasma filter unit operates most effectively at the highest fan speed The air clean indicator lamp will flash to inform you that the periodic cleaning of the plasma filter unit is required Refer to page 14 If you wish to s...

Page 9: ...sequence The sequence can involve one transition from OFF timer to ON timer or from ON timer to OFF timer within a twenty four hour period The first timer function to operate will be the one set nearest to the current time The order of operation is indicated by the arrow in the Remote Control Unit s Display OFF ON or OFF ON One example of Program timer use might be to have the air conditioner auto...

Page 10: ...r During Timer Operation Press the START STOP button About the SLEEP Timer To prevent excessive cooling during sleep the SLEEP timer function automatically modifies the thermostat setting in accon dance with the time setting When the set time has elapsed the air conditioner completely stops During Heating operation When the SLEEP timer is set the thermostat setting is automatically lowered 2 F eve...

Page 11: ...ted outside the range 1 3 for more than 30 minutes they will auto matically return to position 3 range When used in a room with infants chil dren elderly or sick persons the air direction and room temperature should be considered carefully when making settings Vertical Air Direction Adjustment Press the SET button Fig 5 L Each time the button is pressed the air direction range will change as follo...

Page 12: ...n with wet hands or pointed objects otherwise an electric shock or malfunction may occur About Swing Operation During cooling Dry mode Swings between 1 and 3 During heating mode Swings between 3 and 7 The SWING operation may stop temporarily when the air conditioner s fan is not operating or when operating at very low speeds The Indoor unit can be dried by pressing the COIL DRY button on the Remot...

Page 13: ...ither with a vacuum cleaner or by washing the filter in a solution of mild detergent and warm water If you wash the filter be sure to allow it to dry thoroughly in a shady place before reinstalling If dirt is allowed to accumulate on the Air Filter air flow will be reduced lowering operating efficiency and in creasing noise During periods of normal use the Air Filters should be cleaned every two w...

Page 14: ... cleaning the air filter on page 12 handle 2 Remove the dust collection unit Securely grasp the dust collection unit by the handle and pull it out as shown by the arrow The above figure is only for reference so the intake grille is not included 3 Wash with water and dry 1 Soak the plasma filter unit in warm water 104 to 122 F for 10 to 15 minutes If the plasma filter unit is extremely dirty extrem...

Page 15: ...o flash the dust collection unit may be damaged Please consult an authorised dealer to obtain a replacement Align the two ends of the dust collec tion unit with the guide rail and slide in Slide in until it clicks Guide rail Click Click Please ensure that the intake grille is closed properly Cleaning the dust collection unit 4 Install the unit The above figure is only for reference so the intake g...

Page 16: ...s cleaned once every six months Please only install filters that are licensed by our com pany Regarding storage and care of the filter please avoid exposing it to high temperatures and high humidity Also use it as soon as possible after opening its pack aging Hook Filter case Filter Case Hook Hook Hook Click When removing the filter please follow these steps backwards How to install or remove the ...

Page 17: ... 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 matic Defrosting operation When Heating operation is started fan speed is temporarily very low to allow internal parts to warm up During He...

Page 18: ... a wireless radio transmitter may cause the air conditioner to malfunction In this event temporarily disconnect the Power Supply Plug reconnect it and then use the Remote Control Unit to resume operation OPERATING TIPS Microcomputer controlled Automatic Defrosting When using the Heating mode under conditions of low outdoor temperature and high humidity frost may form on the outdoor unit resulting ...

Page 19: ...ntrated at night and other times when less out put is required In the same way when multiple units are used simultaneously for heating it is recommended that they be used in conjunction with other auxiliary space heaters as required Seasonal and outdoor temperature conditions the struc ture of the rooms and the number of persons present may also result in differences of operating efficiency We rec...

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