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Heat Controller DMH18DB-1 manual Troubleshooting Guide, RefrigerationCycleDiagram

Models: DMH18DB-1

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Page 54

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Troubleshooting Guide

RefrigerationCycleDiagram

Indoor

Th1

Th2

Th3

Th4

Th5

Th6

Refrigerent Flow

Cooling

Heating

			Outdoor
Ø 9.52
			High	Th9
			High
		Pressure
Ø 9.52			S/W
		C/V2		C/V1
		Th7		Th8
Ø 6.35	EEV	A
Ø 6.35			B	A
			B	A
	EEV	c	Comp	Comp
	EEV	c
		c
Ø 6.35
				Th10
		Strainer

LOC.	Description	PCB Connector

Th1	Thermistor for evaporating temperature	CN-TH2(Indoor)

Th2	Thermistor for indoor air temperature	CN-TH1(Indoor)

Th3	Thermistor for evaporating temperature	CN-TH1(Indoor)

Th4	Thermistor for evaporating temperature	CN-TH2(Indoor)

Th5	Thermistor for indoor air temperature	CN-TH1(Indoor)

Th6	Thermistor for evaporating temperature	CN-TH1(Indoor)

Th7	Thermistor for Discharge temperature	CN-TH1(Outdoor)

Th8	Thermistor for Discharge temperature	CN-TH1(Outdoor)

Th9	Thermistor for outdoor air temperature	CN-TH2(Outdoor)

Th10	Thermistor for Condensing temperature	CN-TH2(Outdoor)

54Multi type Air Conditioner

Page 54

Image 54

Heat Controller DMH18DB-1 manual Troubleshooting Guide, RefrigerationCycleDiagram, 54Multi type Air Conditioner

Contents

Wall Mounted Multi-SplitSystem Only for authorized service personnelHEAT CONTROLLER, INC Air Conditioning/Heat Pump2Multi type Air Conditioner TABLE OF CONTENTSCombination table SymbolsUsedinthisManualService Manual Combination tableSafety Precautions Safety PrecautionsInstallation 4Multi type Air ConditionerSafety Precautions Do not install, remove, or reService Manual When the product is soaked 6Multi type Air ConditionerSafety Precautions an Authorized Service CenterInstall the drain hose to ensure that InstallationSafety Precautions installing the productOperational 8Multi type Air ConditionerSafety Precautions •Be careful and avoid personal injury Safety PrecautionsService Manual •They may burn or explodeIndoorUnit DimensionsDimensions Split Type IndoorService Manual OutdoorUnitDimensions UE 18kBtu/h12Multi type Air Conditioner Product SpecificationsProduct Specifications Outdoor UnitIndoor Unit Product SpecificationsService Manual B-DMH18DB-1InstallationTools InstallationInstallationParts InstallationRooftop Installations Select the best locationInstallation Indoor unitInstallation Piping length and elevation16Multi type Air Conditioner Multi Piping TypeFixing Installation Plate InstallationService Manual Flaring Work and Connection of Piping Flaring Work and Connection of PipingFlaringwork 18Multi type Air ConditionerService Manual Connecting the PipingFor right rear piping Flaring Work and Connection of Piping20Multi type Air Conditioner Flaring Work and Connection of PipingFor left rear piping Service ManualFlaring Work and Connection of Piping 22Multi type Air Conditioner Indoor unit installationFlaring Work and Connection of Piping REMOTE CONTROL PREPARATIONOPTIONAL HOW TO MOUNT ONTO A WALL HOW TO INSERT BATTERIESFlaring Work and Connection of Piping 24Multi type Air Conditioner Flaring Work and Connection of PipingOutdoor Flaring Work and Connection of Piping Connectthe cabletotheIndoorunitService Manual Line voltage 208~230VConnectthe cabletotheOutdoor unit 26Multi type Air ConditionerEvery wire must be connected firmly Connectionmethod ofthe connectingcableExample How to connect wiring to the terminalsService Manual Connectthecable totheindoorunit 28Multi type Air Conditionerrating on the unit rating plate To check the drainage CheckingthedrainageService Manual Drain pipingFormingthe piping 30Multi type Air ConditionerCheckingmethod Service ManualAir Purging and Evacuation Air Purging and EvacuationRepeat evacuation procedure for each indoor unit Evacuation32Multi type Air Conditioner Finishing the jobCharging ChargingImportant:Unit is critically charge 34Multi type Air Conditioner Test RunningTest Running Prepare remote control1. MAIN UNIT FUNCTION OperationFunctionofcontrol OperationDefrost ControlHeating 36Multi type Air ConditionerOperation Fuzzy OperationService Manual On-TimerOperationOff-TimerOperation OperationSleep Timer Operation 38Multi type Air ConditionerOff-Timer = On-TimerOperation OperationForced Operation Service ManualOperation Buzzer Sounding OperationOperation ON/OFF by Remote controller FunctionofIndoorUnit40Multi type Air Conditioner Sensing the Room TemperatureOperation FunctionofOutdoor UnitService Manual Operating StepROOM TEMPERATURE RemoteControlOperation42Multi type Air Conditioner SETTING BUTTONSIndoor Unit DisassemblyDisassembly To remove the Grille from the Chassis2. To remove the Control Box 44Multi type Air ConditionerDisassembly 3.To remove the Discharge Grille5.To remove the Motor Cover Service ManualDisassembly 6.To remove the Cross-FlowFanElectronicControlDevice Schematic DiagramSchematic Diagram 1.Indoor UnitSchematic Diagram 2. Outdoor UnitService Manual TMP87CM41F48 Multi type Air Conditioner Schematic DiagramSchematic Diagram Wiring Diagram1. Room Type Indoor Unit 2. Outdoor Unit Service Manual•TOP VIEW ComponentsLocations1. Indoor Unit • BOTTOM VIEWSchematic Diagram 2. Display ASSEMBLY 1 Split Type 6871A20682AService Manual Schematic Diagram 3. Outdoor Unit52Multi type Air Conditioner 1 Component sideSchematic Diagram 2 Solder sideTroubleshooting Guide Troubleshooting GuideRefrigerationCycleDiagram 54Multi type Air ConditionerSelf-diagnosisFunction Indoor ErrorOutdoor Error Troubleshooting Guide56Multi type Air Conditioner CycleTroubleshooting GuideTrouble analysis Troubleshooting GuideThe Product doesn’t operate at all ElectronicPartsTroubleshooting GuideTrouble Troubleshooting GuideTroubleshooting Guide Product doesnt operate with the remote controller58Multi type Air Conditioner TroubleService Manual The Compressor/Outdoor Fan are dont operateTroubleshooting Guide Trouble60Multi type Air Conditioner Trouble 4 When indoor Fan does not operateWhen indoor Fan does not operate Troubleshooting GuideTroubleshooting Guide Trouble 5 When the louver does not operateWhen Vertical Louver does not operate Service ManualTroubleshooting Guide ErrorCode62Multi type Air Conditioner Trouble Shooting• The connecting wires are misconnected Troubleshooting GuidePower input AC 230V.Outdoor, Indoor TitleError 64Multi type Air ConditionerTroubleshooting Guide Cause of errorCause of error Service ManualTroubleshooting Guide Title66Multi type Air Conditioner 2-way, 3-wayValve2-way, 3-wayValve 2-wayValve Liguid Side2-way, 3-wayValve 1 Pumping downService Manual 2.Operate the unit for 10 to 15 minutes7.Mount the valve caps and the service port caps 2 Evacuation68Multi type Air Conditioner 2-way, 3-wayValve2-way, 3-wayValve 3 Gas ChargingService Manual After EvacuationTHE QUALITY LEADER IN CONDITIONING AIR HEAT CONTROLLER, INC1900 WELLWORTH AVENUE • JACKSON, MICHIGAN 05/15/07