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10

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Turn off the power.

• When the power is shut off, the characters in the 

remote controller display disappear.

• When the power is on, the unit consumes up to 

several dozen Watts of power.
Turn off the power to conserve energy.

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.

• If the water piping may freeze, keep operating the 

heat source water pump operating even during 
the unit stops.

• Remove all the water from the unit and the water 

piping if the pump is not used for a long time in 
winter.

9. FOLLOWING SYMPTOMS ARE NOT 

AIR CONDITIONER TROUBLES

9-1

THE SYSTEM DOES NOT OPERATE

The air conditioner does not start immediately 
when restarting the operation after stoping 
the operation or when putting the temperature 
back after changing the temperature setting 
with the temperature adjust button.

If the operation lamp lights, the system is in nor-
mal condition.
To prevent overloading of the unit, the air condi-
tioner starts 5 minutes after it is turned ON again 
in case it was turned OFF just before.

If “Centralized Control” is displayed on the 
remote controller and pressing the operation 
button causes the display to blink for a few 
seconds.

This indicates that the central device is controlling 
the unit.
The blinking display indicates that the remote 
control cannot be used.

The system does not start immediately after 
the power supply is turned on.

Wait one minute until the micro computer is pre-
pared for operation.

9-2

IT STOPS SOMETIMES

The remote controller display reads “U4” or 
“U5” and stops but then restarts after a few 
minutes.

This is because 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 restarts when the noise 
goes away.

9-3

COOL/HEAT CANNOT BE CHANGED 
OVER

When the display shows 

 

(changeover under control).

It shows that this is a slave remote controller.
Refer to “Setting the master remote controller”.

When the cool/heat selector switch is 
installed and the display shows 

 

(changeover under control).

This is because cool/heat changeover is con-
trolled by the cool/heat selector. Ask your Daikin 
dealer where the remote control switch is 
installed.

9-4

FAN OPERATION IS POSSIBLE, BUT 
COOLING AND HEATING DO NOT 
WORK

Immediately after the power is turned on.

The micro computer is getting ready to operate.
Wait 10 minutes.

Only fan operation is possible.

This is because the interlock contact point is not 
turned on. (Check that the water pump is operat-
ing.)
This is because the inlet temperature (*1) of the 
heat source water is beyond the operating condi-
tions (refer to page 5). (Check that it is in the 
range of the operating conditions.)

9-5

THE FAN SPEED DOES NOT CORRE-
SPOND TO THE SETTING

The fan speed does no change even if the fan 
strength adjustment button in pressed.

• When the room temperature reaches the set tem-

perature during heating operation (extremely low 
fan speed operation).

• When operation is changed to fan operation while 

another indoor unit is in heating operation 
(extremely low fan speed operation).

• When the remote controller displays “

” 

(stoppage).

• When the remote controller displays “

” (auto-

matic operation).

9-6

THE AIR FLOW DIRECTION DOES 
NOT CORRESPOND TO THE SETTING

The air flow direction does not correspond to 
the remote control display.
The air flow direction does not swing.

This is because the unit is being controlled by the 
microcomputer. Refer to “Adjusting the air flow 
direction”.

01_EN_3P153897-7L.fm  Page 10  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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