Sanyo KMS2472, KMS1872 service manual CB-KMS1272

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Indoor Unit			KMS1272

Control PCB

	Part No.					CB-KMS1272
	Controls					Microprocessor
	Control Circuit Fuse					250V 3A

Remote Control Unit						RCS-4VPIS4U

Fan

	Type					Cross-Flow
	Q'ty ... Dia. and Length			inch (mm)		1 ... D3-11/16 / L24-31/ 32 (D94 / L634)

Fan Motor

	Type					DC Motor
	Model ... Q'ty					SIC-39CVL-D847-4 ... 1
	No. of Poles					8
	Rough Measure RPM (Cool)					1,200
	Nominal Output				W	47
	Coil Resistance				Ohm	-
	(Ambient Temp. 68 oF (20 oC))
	Safety Device
			Type			Internal Controller
			Over- Current Protection			Yes
			Over- Heat Protection			Yes
	Run Capacitor				Micro F	-
					VAC

Flap Motor

	Type					Stepping Motor
	Model					MP24Z3
	Rating					DC 12V
	Coil Resistance				Ohm	Each Pair of Terminal : 400+/-7%
	(Ambient Temp. 77 oF (25 oC))

Heat Exchanger Coil

	Coil					Aluminum Plate Fin / Copper Tube
	Rows					2
	Fins per inch					19.5
	Face Area				ft2 (m2)	2.02 (0.188)

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

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Contents 11,900BTU / h KMS1272 Capacity Indoor Model No Product Code No 500BTU / h KMS0772000BTU / h KMS0972 17,500BTU / h KMS1872Please Read Before Starting Table of Contents Applicable MULTI-OUTDOOR Units Temperature Indoor Air Intake Temp Outdoor Air Intake Temp Indoor Air Intake Temp Outdoor Air Intake TempUnit Speciﬁcations KMS0772208V KMS0972 KMS0972 KMS1272 KMS1272 KMS1872 KMS1872 KMS2472 KMS2472 Major Component Speciﬁcations Indoor UnitCB-KMS0972 CB-KMS1272 CB-KMS1872 CB-KMS2472 Other Component Specifications Temperature F CResistance k ohm Dimensional Data KMS0972 KMS1272Indoor Unit KMS1872 KMS2472 Refrigerant Flow Diagram Indoor Unit KMS0772 KMS0972 KMS1272 Indoor unitAir Throw Distance Charts Performance DataIndoor Unit Indoor Unit Indoor Unit Indoor Unit Electric Wiring Diagrams Indoor Unit KMS0772 KMS0972 KMS12728FA2-5257-70500-0 Operation Functions Emergency operationPAM- control Timer backup Lamp colorsProtective Functions Freeze preventionPrecautions before Performing Inspection or Repair Method of Self-DiagnosticsIndication on indoor unit Self-diagnostics LampsCode Diagnostics item Blinking On IlluminatedReplace the controller Replace the circuit board or the fuseChecking the indoor unit Control Check items unit operation Using the TEST/T-RUN terminalsChecking the Indoor and Outdoor Units Checking the serial communicationsTrouble Diagnosis of Fan Motor Indoor Fan MotorElectromagnetic interference Noise Malfunction and Electromagnetic InterferenceNoise malfunction Locations most susceptible to noise Trouble CorrectionKMS0772 KMS0972 KMS1272 KMS1872 KMS2472 Features Contents Alert SymbolsProduct Information Installation Location Safety InstructionsElectrical Requirements Names of Parts Unit Display and Operation Button Quiet lampRemote Control Unit Display Advance button Remote Control UnitHR. Timer button TransmitterDRY Temperature Display Selector button Using the Remote Control UnitHow to Install Batteries ACL button ALL ClearUsing the Remote Control Unit Operation with the Remote Control Unit OperationOperation with the Remote Control Unit Press the ON/OFF operation buttonCooling and DRY Mode Night Setback Mode is used for saving energyQuiet Mode Power failure during operation Special RemarksClicking sound is heard from the air conditioner Setting the Timer Operation IndicationSetting the Timer To cancel a timer program Press the Cancel button1030 pm 710 am 1100 am Present time Cancellation procedure Using the 1-Hour OFF TimerSetting procedure Operation together with the Daily ON/OFF Repeat TimerHorizontal Adjusting the Airflow DirectionSetting the airflow manually Sweep functionOperation without the Remote Care and CleaningWhen the air conditioner is not running Control UnitHow to replace the anti-mold filter Care and CleaningHow to remove the anti-mold filter Air intake grilleCleaning the negative ion generator How to clean the air clean filterHow to install the air clean filter Washing the grille with waterTroubleshooting Operating RangeTrouble Possible Cause Remedy Appendix B Installation Instructions Contents For Indoor Unit…In a Ceiling or Wall For safe installation and trouble-free operation, you mustPlease Read Before Starting …In a RoomGeneral Installation Site Selection Additional Materials Required for InstallationEmbedding the Tubing and Wiring 150 L1+L2+L3+L4 230How to Install the Indoor Unit Remove the Rear Panel from the UnitMake a Hole Install the Rear Panel on the Wall If Wooden WallIf Block, Brick, Concrete or Similar Type Wall Be sure to wear work gloves How to remove the grilleHow to replace the grille Cut by the sharp aluminum finsIndoor unit types KMS1872, KMS2472 Wiring Instructions General precautions on wiring Shape the Indoor Side TubingWiring Instructions for Inter-unit Connections How to connect wiring to the terminal For Indoor Unit Loose wiring may causeFore, be sure all wiring is For Outdoor Unit For solid core wiring or F-cableMounting Right-side tubingSwitching drain hose and drain cap Left-side tubingDrain cap To unmount indoor unit Risk of Electric ShockHow to Test Run the Air Conditioner Operation lamp Timer lamp Quiet lamp ION lampRemote Control Unit Installation Position Mounting on a WallAddress Switch Address Setting of the Remote Control UnitConnecting a Home Automation device Installation Check Sheet