Daikin VKM50GMV1 Service Manual

SiE71-501Ser viceManualHeat Reclaim Ventilation- with DX coil -[Applied Models]VKM 50GV1VKM 80GV1VKM 100GV1VKM 50GMV1VKM 80GMV1VKM 100GMV1

SiE71-501General Constructions 1Part 1General Constructions1. General Information ...

SiE71-501 Piping diagramAppendix 912. Piping diagramR1T: Thermistor for indoor airR2T: Thermistor for outdoor airR3T: Thermistor for inlet air into DX

Piping diagram SiE71-50192 Appendix

SiE71-501Index iIndexSymbols"A1" Indoor UnitPC Board Defect ...60"A9" Indoor UnitMalfun

SiE71-501ii Index

SiE71-501Drawings & Flow Charts iiiDrawings & Flow ChartsAA1 ...60A9 .

SiE71-501iv Drawings & Flow Charts

VRV products are not within the scope of the Eurovent certification programme.ISO14001 assures an effective environmental management system in order t

General Information SiE71-5012 General Constructions1. General Information1.1 Features1.1.1 External AppearanceVKM50GMV1VKM50GV1VKM80GMV1VKM100GMV1VKM

SiE71-501 General InformationGeneral Constructions 31.1.3 Nomenclature1.1.4 StructuresV K M 50 G M V1VentilationOutdoor Air Treatment TypeMounte

General Information SiE71-5014 General Constructions1.1.5 Optional AccessoriesInstallation of Optional Accessories (For VKM50G (M) V1, VKM80G (M) V1,

SiE71-501Product Specification 5Part 2Product Specification1. Product Specification ...

Product Specification SiE71-5016 Product Specification1. Product Specification1.1 With DX-coil & HumidifierType VKM50GMV1 VKM80GMV1 VKM100GMV1Refr

SiE71-501 Product SpecificationProduct Specification 7Note:1. Cooling and heating capacities are based on the following conditions. Fan is based on Hi

Product Specification SiE71-5018 Product Specification1.2 With DX-coil Type VKM50GV1 VKM80GV1 VKM100GV1Refrigerant R410APower Supply 220-240V, 1ph.,

SiE71-501 Product SpecificationProduct Specification 9Note:1. Cooling and heating capacities are based on the following conditions. Fan is based on Hi

Product Specification SiE71-50110 Product Specification1.3 HumidifierNote: 1. Feed clean water (city water, tap water or equivalent) Dirty water may c

SiE71-501Table of Contents iHeat Reclaim Ventilation- with DX coil -VKM 50GV1VKM 80GV1VKM 100GV1VKM 50GMV1VKM 80GMV1VKM100GMV11. Introduct

SiE71-501Operation 11Part 3Operation1. Operation ...121.1 E

Operation SiE71-50112 Operation1. Operation1.1 Explanation for SystemsSystem ConstructionStandard SystemAir Conditioning Interlocked Control (VRV, Sky

SiE71-501 OperationOpration 13System ConstructionAir Conditioning Interlocked Centralized Control System Batch/Individual Control SystemZone Control S

Operation SiE71-50114 OperationRecommended Systems1. System with a remote sensor connected to each indoor unitOn the ceiling chamber system with which

SiE71-501 OperationOpration 151.2 Features of VKM-G(M)Basic control of VKMVKM sucks the air after OA has subjected to total heat exchange with RA, det

Operation SiE71-50116 Operation[Points to be noted for VKM-G(M)]There are following restrictions with VKM-G(M) model due to its own controlling struct

SiE71-501 OperationOpration 171.3 Central Control System• When carrying out a central connection, connect the central line to F1 and F2 only on the co

Operation SiE71-50118 Operation1.4 Restrictions to Control System1.4.1 Do not Give VKM-G(M) Model a Function to Select Cooling/Heating.(This is becaus

SiE71-501 OperationOpration 191.4.3 Caution when Connecting the Indoor Unit Directly to the DuctFollow the indications described belowa) When connecti

Operation SiE71-50120 Operation1.5 OperationHRV ; Heat Reclaim Ventilation• Carefully read this operation manual before using the total heat exchanger

SiE71-501ii Table of ContentsPart 5 Control Functions... 431. Control Functions...

SiE71-501 OperationOpration 21Remote Controller and Changeover Switch: Name and Function of Each Switch and Display Only the items marked with an ast

Operation SiE71-50122 Operation5. Display “ ” (ventilation/air cleaning)This display shows that the total heat exchange and the air cleaning unit are

SiE71-501 OperationOpration 2327.∗Display “ ” “ ” “ ”This displays the ventilation mode. (BRC1D527 and so on.) (This is not displayed on the controlle

Operation SiE71-50124 OperationExplanation for SystemsThis unit can be made a part of two different systems: as part of the combined operation system

SiE71-501 OperationOpration 25The HRV unit cannot be operated independently when the air conditioner is connected to the HRV unit via a duct. When usi

Operation SiE71-50126 OperationExample 2 :In case of the remote controller “BRC1A62”Display changes as below.NOTE) Current Ventilation mode doesn’t be

SiE71-501 OperationOpration 27<Conditions>1. the indoor temperature is higher than the air conditioning setting and2. the outdoor temperature is

Operation SiE71-50128 OperationPress the on/off button.The operation lamp lights up and the system starts operation.Stopping the systemPress start/sto

SiE71-501 OperationOpration 29Setting the Master Remote Controller• When the system is installed as shown below, it is necessary to designate one of t

Operation SiE71-50130 Operation Details and activity of operation• Setting the master remote controller (without the “ ” display) to cooling/heating

SiE71-501Table of Contents iiiPart 8 Appendix... 871. Appendix ...

SiE71-501 OperationOpration 31Programming Start and Stop of the System with TimerHow to Program and Set the Timer with the Remote Controller “BRC1A62”

Operation SiE71-50132 OperationExample :Set the time to “8”.↓“ ” will display.Starts operation 8 hours after the reservation is complete.The reservati

SiE71-501 OperationOpration 33Now you must choose between 2 options:1. CONFIRM AND COPY TO NEXT DAYThe schedule timer action programmed for the curren

Operation SiE71-50134 Operation

SiE71-501Maintenance 35Part 4Maintenance1. Maintenance...361.1

Maintenance SiE71-50136 Maintenance1. Maintenance1.1 Maintenance for The Air FilterCaution During operation, never check or clean the HRV. It may caus

SiE71-501 MaintenanceMaintenance 37Notes • Do not wash the air filter with hot water of more than 50°C, as doing so may result in discoloration and/or

Maintenance SiE71-50138 Maintenance1.2 Maintenance for The Heat Exchange Element CLEANING FREQUENCYAT LEAST ONCE EVERY TWO YEARS (FOR GENERAL OFFICE

SiE71-501 Inspection and Maintenance of the HumidifierMaintenance 392. Inspection and Maintenance of the Humidifier2.1 For VKM-GMV1 SeriesIn order to

Inspection and Maintenance of the Humidifier SiE71-50140 Maintenance2.1.2 Inspection of the feed water tankCheck for Dirt 1. Remove the maintenance co

Introduction SiE71-501iv1. Introduction1.1 Safety CautionsCautions and Warnings Be sure to read the following safety cautions before conducting repai

SiE71-501 Inspection and Maintenance of the HumidifierMaintenance 412.1.3 Inspection of the Drain PanPlease check whether there is any foreign objects

Inspection and Maintenance of the Humidifier SiE71-50142 Maintenance2.2 Replacing the Humidifier ElementReplacing the Humidifier Element <VKM-GMV1

SiE71-501Control Functions 43Part 5Control Functions1. Control Functions...

Control Functions SiE71-50144 Control Functions1. Control Functions1.1 Explanation of individual Functions1.1.1 Nighttime Free Cooling Operation Mech

SiE71-501 Control FunctionsControl Functions 45Ye sYe sYe sYe sYe sIndoor temp. > Preset temp.+2°CIndoor temp. > Outdoor temp.Ye sYe sNoNoNoNoNo

Control Functions SiE71-50146 Control Functions1.1.2 Cold Area ModeStops or lowers ventilation airflow during defrosting operation and compressor non-

SiE71-501 Control FunctionsControl Functions 471.1.3 Automatic Selection of Ventilation ModeUnlike the conventional total heat exchanger that only col

Control Functions SiE71-50148 Control Functions1.1.5 Air Conditioner Link OperationLink system enables simultaneous ON/OFF operation of heat reclaim v

SiE71-501 Control FunctionsControl Functions 491.1.6 External Damper Operation (FIELD SUPPLY)Explanation of FunctionsIntake of outdoor air can be prev

Control Functions SiE71-50150 Control Functions1.2 Layout of switches on Printed Circuit Board1.2.1 Printed Circuit BoardVKM-GMV1[A1P~A3P]VKM-GV12P130

SiE71-501 Introductionv1.1.2 Cautions Regarding Products after RepairCautionDo not repair the electrical components with wet hands.Working on the equi

SiE71-501Troubleshooting 51Part 6Troubleshooting1. Troubleshooting by Remote Controller ...521.1 The INS

Troubleshooting by Remote Controller SiE71-50152 Troubleshooting1. Troubleshooting by Remote Controller1.1 The INSPECTION / TEST ButtonThe following m

SiE71-501 Troubleshooting by Remote ControllerTroubleshooting 531.2 Self-diagnosis by Wired Remote Controller Explanation If operation stops due to ma

Troubleshooting SiE71-50154 Troubleshooting2. Troubleshooting2.1 Error Code IndicationWhen an abnormality is generated, take necessary measures by ref

SiE71-501 TroubleshootingTroubleshooting 552.2 Operation of The Remote Controller’s Inspection / Test Operation ButtonInspection/test operationExample

Troubleshooting SiE71-50156 Troubleshooting2.3 Indoor Air Thermistor ErrorRemote Controller LCD DisplayError Code 64 Inspection — Unit No. 5LED Ind

SiE71-501 TroubleshootingTroubleshooting 572.4 Outdoor Air Thermistor ErrorRemote Controller LCD DisplayError Code 65 Inspection — Unit No. 5LED I

Troubleshooting SiE71-50158 Troubleshooting2.5 Damper System Error (Alarm)Remote Controller LCD DisplayError Code 6A Inspection — Unit No. 5LED In

SiE71-501 TroubleshootingTroubleshooting 592.6 Damper System Error (Alarm)Remote Controller LCD DisplayError Code 6A Inspection 5 Unit No. 5LED In

Troubleshooting SiE71-50160 Troubleshooting2.7 “A1” Indoor Unit: PC Board DefectRemote Controller DisplayA1Applicable ModelsAll indoor unit modelsMeth

Introduction SiE71-501vi1.1.3 Inspection after RepairBe sure to use the specified cable to connect between the indoor and outdoor units. Make the conn

SiE71-501 TroubleshootingTroubleshooting 612.8 “A9” Indoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (20E)Remote Controller Displ

Troubleshooting SiE71-50162 Troubleshooting2.9 “C4” Indoor Unit: Malfunction of Thermistor (R4T) for Heat ExchangerRemote Controller DisplayC4Applicab

SiE71-501 TroubleshootingTroubleshooting 632.10 “C5” Indoor Unit: Malfunction of Thermistor (R5T) for Gas PipesRemote Controller DisplayC5Applicable M

Troubleshooting SiE71-50164 Troubleshooting2.11 “C9” Indoor Unit: Malfunction of Thermistor (R3T) for Suction AirRemote Controller DisplayC9Applicable

SiE71-501 TroubleshootingTroubleshooting 652.12 “U3” Check Operation not executedRemote Controller DisplayU3Applicable ModelsMethod of Malfunction Det

Troubleshooting SiE71-50166 Troubleshooting2.13 Dedicated LCD Remote ControllerWhen “88” remains on remote controller display.Error Detection MethodWh

SiE71-501 TroubleshootingTroubleshooting 672.14 Data Transmission Error (Between LCD Remote Controller and Main Unit)Remote Controller LCD DisplayErro

Troubleshooting SiE71-50168 Troubleshooting2.15 “U5” Malfunction of Transmission Between Remote Controller and Indoor UnitRemote Controller DisplayU5A

SiE71-501 TroubleshootingTroubleshooting 692.16 “U8” Malfunction of Transmission Between Master and Slave Remote ControllersRemote Controller DisplayU

Troubleshooting SiE71-50170 Troubleshooting2.17 “UA” Excessive Number of Indoor UnitsRemote Controller DisplayUAApplicable ModelsAll models of indoor

SiE71-501 Introductionvii1.1.4 Using IconsIcons are used to attract the attention of the reader to specific information. The meaning of each icon is d

SiE71-501 TroubleshootingTroubleshooting 712.18 “UC” Address Duplication of Central Remote ControllerRemote Controller DisplayUCApplicable ModelsAll m

Troubleshooting SiE71-50172 Troubleshooting2.19 “UE” Malfunction of Transmission Between Central Remote Controller and Indoor UnitRemote Controller Di

SiE71-501 TroubleshootingTroubleshooting 73TroubleshootingCautionBe sure to turn off power switch before connect or disconnect connector, or parts dam

Troubleshooting SiE71-50174 Troubleshooting2.20 “UE” Malfunction of Transmission Between Central Remote Controller and Indoor UnitRemote Controller Di

SiE71-501 TroubleshootingTroubleshooting 752.21 Main Unit PCB AssemblyError Detection MethodCheck microcomputer operation monitor.Error Generating Con

Troubleshooting SiE71-50176 Troubleshooting2.22 ThermistorError Detection MethodRemove thermistor and check resistance with tester.Error Generating Co

SiE71-501 TroubleshootingTroubleshooting 77For Thermistor of Indoor Air R1TFor Thermistor of Outdoor Air R2TIndoor unit For air suction R3T Outdoor un

Troubleshooting SiE71-50178 Troubleshooting2.23 Power TransformerError Detection MethodCheck resistance and voltage with tester, and insulation resist

SiE71-501 TroubleshootingTroubleshooting 792.24 Damper MotorError Detection MethodCheck damper motor and limit switch when damper motor does not opera

Troubleshooting SiE71-50180 Troubleshooting

Introduction SiE71-501viii

SiE71-501Field Setting 81Part 7Field Setting1. Field Setting ...

Field Setting SiE71-50182 Field Setting1. Field Setting1.1 Field Setting and Test Run1.1.1 Perform Field Settings with the Remote Controller(1) Make s

SiE71-501 Field SettingField Setting 83<Example>When adjusting the ventilation air flow to low setting in the group setting mode, enter the mode

Field Setting SiE71-50184 Field Setting4. When returning to normal mode, the remote controller is initialized, so the display might show “88.”5. When

SiE71-501 Field SettingField Setting 851.1.2 Perform a Test Run according to the Outdoor Unit’s Installation Manual1. Make sure the electric parts box

Field Setting SiE71-50186 Field Setting1.1.3 Next, run the Humidifier<VKM-GMV1 series only>1. Check that the water supply piping is connected se

SiE71-501Appendix 87Part 8Appendix1. Appendix ...881.1 Wir

Appendix SiE71-50188 Appendix1. Appendix1.1 Wiring DiagramVKM50GMV1VKM80GMV1VKM100GMV1POWER SUPPLY220-240V~50HzLNLNX1MAdapter PC board for wiring (Opt

SiE71-501 AppendixAppendix 89VKM50GV1VKM80GV1VKM100GV1POWER SUPPLY220-240V~50HzLNLNX1MAdapter PC board for wiring (Optional accessories)(KRP50-2)Contr

Appendix SiE71-50190 Appendix1.2 List of Electrical and Functional PartsParts NameSymbolModelRemarkVKM50GMV1VKM80GMV1VKM100GMV1VKM50GV1VKM80GV1VKM100G