Manuals / Samsung / Household Appliance / Air Conditioner

Samsung MH026FNCA service manual PCB Diagram, 8-1MAIN PCBIndoor Unit, Mhfnca

Models: MH026FNCA

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Page 67

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8. PCB Diagram

8-1 MAIN PCB(Indoor Unit)

■MH✳✳✳FNCA

The red number connecter is not used.

!	Power	&	Temperature Sensor

@	Motor RPM Feedback	*	Auto Grill

#	Remocon Module	(	HVPS(High voltage Generator)

$	Humidity Sensor	)	BLADE-H Step Motor

%	Anions	1	Display

^	MPI	2	Indoor Fan Motor

8-1	Samsung Electronics

Page 67

Image 67

Samsung MH026FNCA service manual PCB Diagram, 8-1MAIN PCBIndoor Unit, Mhfnca

Contents

FREE JOINT MULTI AIR CONDITIONER INDOOR UNITTHE FEATURE OF PRODUCT Convenient InstallationContents 9-12 10-111-1 Contents1-3During operation 1. Precautions1-1Installing the air conditioner 1-2Power supply and circuit breaker1-5Others 1-4Disposing of the unitSamsung Electronics Inverter for High Efficiency Operation 2. Product Specifications2-1The Feature of Product Convenient InstallationItem 2-2Product SpecificationsModel MH026FNCASamsung Electronics Product SpecificationscontMH035FECA Product SpecificationscontModel MH026FECA:&#$ Product SpecificationscontSamsung Electronics QFGN+VGO 2-3Accessory and Option Specifications2-3-1Indoor Unit Accessories MHFNCADescriptions Indoor Unit AccessoriescontMHFECA ItemDescriptions Indoor Unit AccessoriescontMHFECAcont Item&GUETKRVKQPU 2-3-2Outdoor Unit AccessoriesMH050FXCA2A/MH080FXCA4A +VGOItem 2-3-3Transmitter Unit Accessories+PFKECVQTU HECJIAJP=J@@FQOPIAJPONNKNIK@A=J@?DA?GIAPDK@ &J@KKN2JEPSamsung Electronics MHFECAMHFECAcont Alignment and AdjustmentsSamsung Electronics 3-1-2Outdoor UnitOutdoor Unitcont Step 1 : Enter the Option Setup mode 3-2Setting Option Setup Methodex Option No Alignment and Adjustments Step 5 : Unit operation test-run • Error ModeSamsung Electronics Step 4 : Pressing the ON/OFF buttonTECHNICAL BULLETIN Option Code Procedure for MH Neo ForteMODEL Table of the option codeOPTION CODE Remark 4. Disassembly and ReassemblyNecessary Tools ItemRemark 4-1Indoor Unit4-1-1MH026FNCA/MH035FNCA/MH052FNCA ProcedureSamsung Electronics ProcedureRemark Parts ProcedureRemark Parts 4-1-2MH026FECA/MH035FECAProcedure Remark6Disassemble the band Motor for fixing the Motor ProcedureParts Unscrew a screw1 Disassemble the Cabinet Top Evap ProcedureSamsung Electronics RemarkParts Procedure1-3and the Drain Pan 2-1, 2-2, Samsung Electronics ProcedureParts Disassemble if after disassembling the case PCB ProcedureDisassembly and Reassembly Parts4-11 4-1-3MH052FECAProcedure Samsung ElectronicsParts ProcedureBlower & Motor Parts ProcedureSamsung Electronics 4-13Drain Pan ProcedureDisassembly and Reassembly PartsParts ProcedureSamsung Electronics 4-15Remark Procedure1Detach all the wires connected to the PCB PartsParts ProcedureSamsung Electronics 4-17Remark 4-2Outdoor Unit4-2-1MH050FXCA2A ProcedureParts ProcedureSamsung Electronics 4-19Remark ProcedureRelease the refrigerant at first 4-21 4-2-2MH080FXCA4AProcedure Samsung ElectronicsRemark ProcedureDisassembly and Reassembly Parts4-23 Samsung ElectronicsRemark TLHK@A@3EASO=J@-=NPOEOP&J@KKN2JEP *%#+ *%#+ &GUETKRVKQP 2CTVU.KUV5COUWPINGEVTQPKEU %QFG0Q6 7 5-1-2MH052FNCASamsung Electronics 5COUWPINGEVTQPKEU 2CTVU.KUV19 21 5-1-3MH026FECA/MH035FECAExploded Views and Parts List 2 17 18 16Samsung Electronics Parts List10 9 6 5-1-4MH052FECAExploded Views and Parts List 2 2 8 2Samsung Electronics Parts List 8 5-2Outdoor Unit5-2-1MH050FXCA2A 11 12 3 1Samsung Electronics 2CTVU.KUV5-10 56 10 20 4 13 15 2 5-2-2MH080FXCA4A1 14 Samsung Electronics Parts List5-12 6-1Indoor Unit 6. Wiring DiagramMHFNCA %# A &J@KKN2JEPĠ?KJPMH050FXCA2A 6-2Outdoor UnitSamsung Electronics MH080FXCA4A7-1Indoor Unit 7. Schematic DiagramMHFNCA Samsung Electronics MHFECA8-1MAIN PCBIndoor Unit 8. PCB DiagramMHFNCA MHFNCA 02- Ġ&J@KKN2JEP Ġ?KJPSamsung Electronics 5 6 7 8 9 0 MHFECA2QYGT *&+ - Ġ,QP@KKN2JEP%#5 *%#5 2QYGT09-1Items to be checked first 9. TroubleshootingSamsung Electronics 9-2Checking and Testing operations2. Settings of PCB Display of the Outdoor unit Reset button2.2.Apply the power to the outdoor unit Samsung Electronics In case of MANUAL ADDRESSING mode Switch Setting and Testing OperationTYPE Switch Setting and Testing Operation contSWITCH “SW02 ” Samsung ElectronicsHeat mode try-run :Pushthe K2 button once Switch Setting and Testing Operation contPlease do cool mode try-runor heat mode try run Cool mode try-run :Pushthe K2 button three timesSamsung Electronics Manaul address settingAddress setting another case Auto address settingSamsung Electronics Operation case9-10 Try-runCheck Error 9-3-1Basic Check Flow 9-3Fault Diagnosis by SymptomSamsung Electronics Basic Check FlowcontTroubleshooting 9-13LED1 Red : ALWAYS ON 9-3-2Checking Outdoor ControllerSamsung Electronics 9-145.Checking DC voltage on each point Samsung Electronics 9-3-4Checking Power cable and Communication cable9-3-5Checking Temperature sensor 9-3-3Checking Indoor controller%WTTGPV8UVGRXCNWGECPOQPKVQTGFYKVJ8+9/1& DA?GEJC3-ELAI=P?DEJC 5GGCWNV&KCIPQUKUQH/CLQT2CTVU9-4-2Procedure 9-4-1Cautions for Part Replacement9-4PCB Inspection 10-1Selecting Area for Installation 10. Reference for Installation10-1-1Indoor Unit 10-2 10-1-3Remote Control Unit10-1-2Outdoor Unit Samsung ElectronicsMH050FXCA2A 10-2Connecting Up and Purging the CircuitSamsung Electronics MH080FXCA4A10-4 10-3-1MH050FXCA2A 10-3Refrigerant RefillSamsung Electronics 10-3-2MH080FXCA4A10-6 %5#5CA*%8#5C4A /ABNECAN=JP@FQOPIAJPSamsung Electronics 10-5Flare Nut Fixing Torque10-8 10-6-1MH050FXCA2A 10-6Pump down ProcedureSamsung Electronics 10-6-2MH080FXCA4A10-10 4 A / O O O 11. Reference Information11-1Index for Model Name FREEJOINTMULTIFOREUROPEProduct Type Index for Model Name contFREEJOINTMULTIFOREUROPE 07 / O O OSamsung Electronics 11-2Refrigerating Cycle DiagramMH050FXCA2A 11-3Reference Information MH080FXCA4ASamsung Electronics 11-411-3Pressure & Capacity mark Power/HeatSamsung Electronics 11-5Q & A for Non-trouble11-6 Q & A for Non-troublecont Samsung Electronics Q & A for Non-troublecont11-8 Effectiveness of air supplier 11-6Common sense of refrigeration11-6-1Air supplier Air supplier?ELECTRONICS GSPNGlobal Service Partner Network