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6

English

6. OPERATION PROCEDURE

• Operation procedure varies according to the com-

bination of BS unit and remote controller. Read 
the chapter “What to do before operation”.

• To protect the unit, turn on the main power switch 

6 hours before operation.
And do not turn off the power supply during the air 
conditioning season because of smoothly start up.

• If the main power supply is turned off during oper-

ation, operation will restart automatically after the 
power turns back on again.

6-1

COOLING, HEATING, AUTOMATIC 
AND FAN ONLY OPERATION

• Automatic operation can be selected only on the 

heat recovery system.

• The operation mode cannot be changed with the 

remote controller whose display shows 

” (changeover under control).

Change the operation mode with the remote con-
troller whose display does not show “

”.

• When the display “

” (changeover under 

control) flashes, refer to the chapter “Operation 
procedure - Setting the master remote controller”.

• The fan may keep on running for about 1 minute 

after the heating operation stops for removing the 
heat in the indoor unit.

• The air flow rate may be ajusted automatically 

depending on the room temperature or the fan 
may stop immediately. This is not a malfunction.

• For machine protection the system may control 

the air flow rate automatically.

• It may take sometime for finishing to change the 

air flow rate.
This is normal operation.

FOR SYSTEMS WITHOUT COOL/HEAT SELEC-
TOR (Refer to figure 4)

Press the operation mode selector button sev-
eral times and select the operation mode of 
your choice;

” Cooling operation

” Heating operation

” Automatic operation

” Fan only operation

NOTE

• Automatic operation (Heat recovery system only)

In this operation mode, cool/heat changeover is 
automatically performed.

Press the on/off button.
The operation lamp lights up and the system 
starts operation.

FOR SYSTEMS WITH COOL/HEAT SELECTOR 
(Refer to figure 4 and 7)

Select operation mode with the Cool/Heat 
selector as follows:

” “

” Cooling operation 

(Refer to figure 7.1)

” “

” Heating operation 

(Refer to figure 7.2)

” 

 Fan only operation 

(Refer to figure 7.3)

Press the on/off button. 

(Refer to figure 4)

The operation lamp lights up and the system 
starts operation.

ADJUSTMENT (Refer to figure 4)

For adjustment the desired temperature, fan 
speed and air flow direction (only for FXC, FXF, 
FXH, FXK, FXA), follow the procedure shown 
below.

Press the temperature setting button and set 
the desired temperature.

Each time this button is pressed, the 
temperature setting rises or lowers 1°C.

NOTE

• Set the temperature within the operation 

range.

• The temperature setting is impossible for fan 

only operation.

Press the fan speed control button and select 
the fan speed of your preference.

Press air flow direction adjust button.
Refer to the chapter “Adjusting the air flow 
direction” for details.

STOPPING THE SYSTEM (Refer to figure 4)

Press the on/off button once again.
The operation lamp goes off and the system 
stops operation.

NOTE

• Do not turn off the power immediately after 

the unit stops.

• The system needs at least 5 minutes for 

residual operation of drain pump device.
Turning off the power immediately will cause 
water leak or trouble.

EXPLANATION OF HEATING OPERATION

• In heating operation, it may generally take longer 

to reach the set temperature than in cooling oper-
ation. 
We recommend starting the operation with timer.

Hot start operation

In order to prevent cold air from blowing out of an 
indoor unit at the start of heating operation, the 
indoor fan is automatically stopped. The display of 
the remote controller shows “

”.

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01_EN_3P153897-7L.fm  Page 6  Friday, July 11, 2008  1:58 PM

Summary of Contents for VRV-WIII RWEYQ8PY1

Page 1: ...ystem air conditioner Betriebsanweisung VRVWIII System Klimaanlage Manuel d utilisation Conditionneur d air VRVWIII System Manual de operaci n Sistema de acondicionador de aire VRVWIII Manuale d uso C...

Page 2: ...as referencias Asimismo si lo desea puede consultar detalles sobre la unidad interior en el manual de funcionamiento pro vistoconlamisma Guardeel manualdefuncionamientoconlaunidad interior y con este...

Page 3: ...1 4 3 NOT AVAILABLE 2 5 6...

Page 4: ...8 7 1 7 2 7 3 Double flow Ceiling Suspended Wall Mounted Multi flow Corner 13 9 10 11 12 14 Heat pump system Heat recovery system...

Page 5: ...to it whenever neces sary If the equipment is transferred to a new user be sure also to hand over the manual WARNING Be aware that prolonged direct exposure to cool or warm air from the air conditione...

Page 6: ...solvents such as paint thinner The use of organic solvents may cause crack dam age to the product electric shocks or fire Be sure to use a dedicated power supply for the air conditioner The use of any...

Page 7: ...bout checking and adjustment of internal parts Do not leave the remote controller wherever there is a risk of wetting If water gets into the remote controller there is a risk of electrical leakage and...

Page 8: ...e air flow direction 5 Display ventilation air cleaning This display shows that the total heat exchanger unit Heat Reclaim Ventilation are in operation these are optional accessories 6 Display set tem...

Page 9: ...ditioning selector switch Set the switch to for fan only operation or to for heating or cooling operation 24 Cool heat changeover switch Set the switch to for cooling operation or to for heating opera...

Page 10: ...eration mode cool heat changeover is automatically performed Press the on off button The operation lamp lights up and the system starts operation FOR SYSTEMS WITH COOL HEAT SELECTOR Refer to figure 4...

Page 11: ...ing operation mode with the Cool Heat selector Press the operation mode selector button sev eral times and select program dry Press the on off button The operation lamp lights up and the system starts...

Page 12: ...hown in figure 14 it is necessary to designate one of the remote con trollers as the master remote controller Only the master remote controller can select heating automatic or cooling operation The di...

Page 13: ...he air blow directly to a person Make sure that the inlet and outlet of the indoor unit are not clogged 8 MAINTENANCE 8 1 HANDLING OF HEAT SOURCE WATER Requests from manufacturer Do not fail to mount...

Page 14: ...e the remote control is intercepting noise from electrical appliances other than the air conditioner and this prevents communication between the units causing them to stop Operation automatically rest...

Page 15: ...A hissing sound which is heard at the start or immediately after stopping operation This is the noise of refrigerant gas caused by flow stop or flow change 9 9 DUST COMES OUT OF THE UNIT When the uni...

Page 16: ...r failure Wait until power is restored If power failure occurs during operation the system automatically restarts immediately after the power supply is recovered Check if no fuse has blown Turn off th...

Page 17: ...comes in contact with the combustible air in the equipment such as fan heater stove oil gas cooker etc it will cause toxic gas to be generated When a refrigerant leakage failure has been repaired conf...

Page 18: ...ection fees etc Depending on the content of the maintenance and inspection contract the inspection and maintenance cycles may in reality be shorter than those listed here Shortening of maintenance cyc...

Page 19: ...d the refrigerant in accordance with chlorofluoro carbon collection and destruction law Where to call For after sales service etc consult with your dealer Warranty period This product includes a warra...

Page 20: ...3P153897 7L EM08A054 0808 HT...

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