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9

7. OPTIMUM OPERATION

Observe the following precautions to ensure the 
system operates properly.

• Adjust the room temperature properly for a com-

fortable environment. Avoid excessive heating or 
cooling.

• Prevent direct sunlight from entering a room dur-

ing cooling operation by using curtains or blinds.

• Ventilate often.

Extended use requires special attention to venti-
lation.

• Do not keep doors and windows opened. If the 

doors and windows remain open, air will flow out 
of your room causing a decrease in the cooling or 
heating effect.

• Never place objects near the air inlet or the air 

outlet of the unit. It may cause deterioration in the 
effect or stop the operation.

• Turn off the main power supply switch to the unit 

when the unit is not used for longer periods of 
time. If the switch is on, it uses electricity. Before 
restarting the unit, turn on the main power supply 
switch 6 hours before operation to protect the unit. 
(Refer to the chapter “Maintenance” in the indoor 
unit manual.)

• When the display shows “

” (time to clean the 

air filter), ask a qualified service person to clean 
the filters. (Refer to the chapter “Maintenance” in 
the indoor unit manual.)

• Keep the indoor unit and remote control at least 

1 m away from televisions, radios, stereos, and 
other similar equipment.
Failing to do so may cause static or distorted pic-
tures.

• Do not use other heating devices directly beneath 

the indoor unit.
If you do, they might get deformed by the heat.

• It takes time for the room temperature to reach the 

set temperature.
We recommend starting the operation in advance 
using timer operation.

• Fully use the function of air flow direction adjust.

Cold air gathers on the floor, and warm air gathers 
in the ceiling.
Set the air flow direction parallel during cooling or 
dry operation, and set it downwards during heat-
ing operation. Do not let the 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 a strainer (sold separately as 

an accessory) in the inlet pipe for heat source 
water intake.

• Do not use any water contaminated by relatively 

high level of foreign materials for heat source.

• Carry out the control of water quality without fail.

Otherwise, corrosion of condenser or piping 
occurs or germs may be generated.

• For the timing of cleaning and its method, consult 

with the dealer you purchased the unit.

Cleaning of the heat-exchanger on the water side

• Water scales, mosses, etc will accumulate on the 

heat-exchanger on the water side within an air-
conditioner during use for a long period. Carry out 
cleaning at a regular interval. If water scales, 
mosses, etc. have accumulated, the cooling and 
heating capacity may decline. The safety device 
will be repeatedly actuated causing normal oper-
ation to become impossible.

• For use in an area where the water quality is poor, 

increase the frequency of cleaning.

Cleaning of strainer

• Clean the strainer in the inlet pipe of heat source 

water intake.

8-2

AT THE BEGINNING OF THE SEASON

Check

• Are the inlet and outlet of the indoor unit blocked?

Remove anything blocking them.

• Run the pump and make sure that the water is cir-

culating.
If you operate without water circulating, the unit 
may be damaged.

Clean the air filter and exterior.

• After cleaning the air filter, be sure to put it back in 

the same position.
See the operation manual included with the 
indoor unit for details on how to clean it.

Turn the power on.

• When the power comes on, the characters in the 

remote controller display appear.
(To protect the unit, turn the power on at least 
6 hours before operating. This makes starting 
operation smooth.)

8-3

AT THE END OF THE SEASON

On a clear day, use fan operation for around half a 
day to thoroughly dry out the interior of the unit.

• Refer to page 6 for details on fan only operation.

01_EN_3P153897-7L.fm  Page 9  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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