Daikin RWEYQ8T9Y1B Installer And User Manual

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19 TroubleshootingInstaller and user reference guide52RWEYQ8~14T9V1B + RWEYQ8~14T9Y1BVRV IV water-cooled system air conditioner4P452191-1 – 2017.0418.4.2 Recommended maintenance andinspectionSince dust collects when using the unit for several years,performance of the unit will deteriorate to some extent. As takingapart and cleaning interiors of units requires technical expertise andin order to ensure the best possible maintenance of your units, werecommend to enter into a maintenance and inspection contract ontop of normal maintenance activities. Our network of dealers hasaccess to a permanent stock of essential components in order tokeep your unit in operation as long as possible. Contact your dealerfor more information.When asking your dealer for an intervention, always state:▪ The complete model name of the unit.▪ The manufacturing number (stated on the nameplate of the unit).▪ The installation date.▪ The symptoms or malfunction, and details of the defect.WARNING▪ Do not modify, disassemble, remove, reinstall or repairthe unit yourself as incorrect dismantling or installationmay cause an electric shock or fire. Contact yourdealer.▪ In case of accidental refrigerant leaks, make sure thereare no naked flames. The refrigerant itself is entirelysafe, non-toxic and non-combustible, but it willgenerate toxic gas when it accidentally leaks into aroom where combustible air from fan heaters, gascookers, etc. is present. Always have qualified servicepersonnel confirm that the point of leakage has beenrepaired or corrected before resuming operation.18.4.3 Recommended maintenance andinspection cyclesBe aware that the mentioned maintenance and replacement cyclesdo not relate to the warranty period of the components.Component InspectioncycleMaintenance cycle(replacements and/orrepairs)Electric motor 1 year 20,000 hoursPCB 25,000 hoursHeat exchanger 5 yearsSensor (thermistor, etc.) 5 yearsUser interface and switches 25,000 hoursDrain pan 8 yearsExpansion valve 20,000 hoursSolenoid valve 20,000 hoursThe table assumes the following conditions of use:▪ Normal use without frequent starting and stopping of the unit.Depending on the model, we recommend not starting andstopping the machine more than 6 times/hour.▪ Operation of the unit is assumed to be 10 hours/day and2,500 hours/year.NOTICE▪ The table indicates main components. Refer to yourmaintenance and inspection contract for more details.▪ The table indicates recommended intervals ofmaintenance cycles. However, in order to keep the unitoperational as long as possible, maintenance work maybe required sooner. Recommended intervals can beused for appropriate maintenance design in terms ofbudgeting maintenance and inspection fees.Depending on the content of the maintenance andinspection contract, inspection and maintenance cyclesmay in reality be shorter than listed.18.4.4 Shortened maintenance and replacementcyclesShortening of "maintenance cycle" and "replacement cycle" needs tobe considered in following situations:The unit is used in locations where:▪ Heat and humidity fluctuate out of the ordinary.▪ Power fluctuation is high (voltage, frequency, wave distortion, etc.)(the unit cannot be used if power fluctuation is outside theallowable range).▪ Bumps and vibrations are frequent.▪ Dust, salt, harmful gas or oil mist such as sulphurous acid andhydrogen sulfide may be present in the air.▪ The machine is started and stopped frequently or operation time islong (sites with 24 hour air-conditioning).Recommended replacement cycle of wear partsComponent InspectioncycleMaintenance cycle(replacements and/orrepairs)Air filter 1 year 5 yearsHigh efficiency filter 1 yearFuse 10 yearsCrankcase heater 8 yearsPressure containing parts In case of corrosion,contact your local dealer.NOTICE▪ The table indicates main components. Refer to yourmaintenance and inspection contract for more details.▪ The table indicates recommended intervals ofreplacement cycles. However, in order to keep the unitoperational as long as possible, maintenance work maybe required sooner. Recommended intervals can beused for appropriate maintenance design in terms ofbudgeting maintenance and inspection fees. Contactyour dealer for details.INFORMATIONDamage due to taking apart or cleaning interiors of units byanyone other than our authorised dealers may not beincluded in the warranty.19 TroubleshootingIf one of the following malfunctions occur, take the measures shownbelow and contact your dealer.