Daikin RXYQ72MTJU Operation Manual

Also see for REYQ144MTJU: Serveice manual

Contents

Daikin RXYQ72MTJU Operation Manual Manual pdf 12 page image

12• When the display shows “ ” (time to clean theair filter), ask a qualified service person to cleanthe filters. (Refer to the chapter “Maintenance” inthe operation manual of indoor unit.)• Keep the indoor unit and remote controller at least3.5ft. away from televisions, radios, stereos, andother similar equipment.Failing to do so may cause static or distorted pic-tures.• Do not use other heating devices directly beneaththe indoor unit.If you do, they might get deformed by the heat.7. SEASONAL MAINTENANCE7-1 AT THE BEGINNING OF THE SEASONCheck• Are the indoor and outdoor unit intake and outletvents blocked?Remove anything that might be blocking them.Clean the air filter and exterior.• After cleaning the air filter, be sure to put it back inthe same position.See the operation manual included with theindoor unit for details on how to clean it.Turn the power on.• When the power comes on, the characters in theremote controller display appear.(To protect the unit, turn the power on at least 6hours before operating it. This makes operationsmoother.)7-2 AT THE END OF THE SEASONOn a clear day, use fan operation for around halfa day to thoroughly dry out the interior of theunit.• Refer to page 8 for details on fan operation.Turn off the power• When the power is shut off, the characters in theremote controller display disappear.• When the power is on, the unit consumes up toseveral 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 inthe same position.See the operation manual included with theindoor unit for details on how to clean it.8. FOLLOWING SYMPTOMS ARENOT AIR CONDITIONER TROU-BLES8-1 THE SYSTEM DOES NOT OPERATE• The air conditioner does not start immediatelywhen restarting or changing the operationmode.If the operation lamp lights, the system is in nor-mal condition.To prevent overloading of the compressor motor,the air conditioner starts 5 minutes after it isturned ON again in case it was turned OFF justbefore.• If “Centralized Control” is displayed on theremote controller and pressing the operationbutton causes the display to blink for a fewseconds.This indicates that the central device is controllingthe unit.The blinking display indicates that the remotecontroller cannot be used.• The system does not start immediately afterthe power supply is turned on.Wait 1 minute until the micro computer is pre-pared for operation.8-2 IT STOPS SOMETIMES• The remote controller display reads “U4” or“U5” and stops but then restarts after a fewminutes.This is because the remote control is interceptingnoise from electrical appliances other than the airconditioner, and this prevents communicationbetween the units, causing them to stop.Operation automatically restarts when the noisegoes away.8-3 COOL/HEAT CANNOT BE CHANGEDOVER• 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 is installedand the display shows “ ”(changeover under control).This is because cool/heat changeover is con-trolled by the COOL/HEAT selector. Ask yourDaikin dealer where the remote control switch isinstalled.