Daikin RYYQ8T7Y1B Installer And User Reference Manual

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Daikin RYYQ8T7Y1B Installer And User Reference Manual Manual pdf 86 page image

19 TroubleshootingInstaller and user reference guide86RYYQ+RYMQ+RXYQ8~20T7Y1BVRV IV system air conditioner4P370475-1C – 2016.1118.4.3 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.WARNINGStop operation and shut off the power if anythingunusual occurs (burning smells etc.).Leaving the unit running under such circumstances maycause breakage, electric shock or fire. Contact your dealer.The system must be repaired by a qualified service person:Malfunction MeasureIf a safety device such as a fuse, abreaker or an earth leakage breakerfrequently actuates or the ON/OFFswitch does not properly work.Turn off the main powerswitch.If water leaks from the unit. Stop the operation.The operation switch does not workwell.Turn off the power.If the user interface display indicates theunit number, the operation lamp flashesand the malfunction code appears.Notify your installer andreport the malfunctioncode.If the system does not properly operate except for the abovementioned cases and none of the above mentioned malfunctions isevident, investigate the system according to the followingprocedures.Malfunction MeasureIf the system does notoperate at all.▪ Check if there is no power failure. Waituntil power is restored. If power failureoccurs during operation, the systemautomatically restarts immediately afterthe power supply is recovered.▪ Check if no fuse has blown or breakerhas worked. Change the fuse or reset thebreaker if necessary.If the system goes intofan only operation, butas soon as it goes intoheating or coolingoperation, the systemstops.▪ Check if air inlet or outlet of outdoor orindoor unit is not blocked by obstacles.Remove any obstacle and make it well-ventilated.▪ Check if the user interface display shows(time to clean the air filter). (Refer to"18 Maintenance and service" onpage 84 and "Maintenance" in the indoorunit manual.)