Sanyo CH0971, CH1271 service manual CB-KHS1271 Microprocessor 250V 3A

Page 9

Indoor Unit

KHS1271

Control PCB

Part No.

Controls

Control Circuit Fuse

Remote Control Unit

Fan

CB-KHS1271

Microprocessor

250V 3A

RCS-4HVPIS4U

Type
Q'ty ... Dia. and Length	inch (mm)

Cross-Flow

1 ... D3-11/16 / L24-31/32 (D94/L634)

Fan Motor
	Type				AC Motor
	Model ... Q'ty				IBH-884-076 ... 1
	No. of Poles				4
	Rough Measure RPM (Cool / Heat)				1,250 / 1,250
	Nominal Output			W	16
	Coil Resistance			Ohm	BRN-WHT : 57.9
	(Ambient Temp. 68 °F (20 °C))				RED-WHT : 55.2
	Safety Device
		Type			Thermal Fuse
		Operating Temp.	Open °F (°C)		266 (130)
			Close °F (°C)		-
	Run Capacitor			Micro F	4.5
				VAC	250

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

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.

Image 9

Contents Indoor Model No. Product Code No DC Inverter Split System AIR ConditionerPlease Read Before Starting Table of Contents Checking Electrical Components Indoor Air Intake Temp Outdoor Air Intake Temp Operating RangeUnit Specifications SpecificationsKHS0971 CH0971CH1271 KHS1271Indoor Unit Major Component SpecificationsCB-KHS1271 Microprocessor 250V 3A Outdoor Unit CH0971 Outdoor UnitCompressor External FinishOutdoor Unit CH1271 Indoor heat exchanger sensor Other Component SpecificationsCompressor temp sensor Outdoor air temp sensorIndoor Unit KHS0971 Dimensional Data21-3/16 10-13/16 Refrigerant Flow Diagram Refrigerant Flow DiagramInsulation of Refrigerant Tubing After a tube has been insulated To break or crackPerformance Data Temperature ChartsHigh pressure performance chart Indoor Unit KHS1271 Outdoor Unit CH1271 493 Tube service Cooling Capacity Power Supply 115V Single Phase 60Hz Cooling Capacity11,900 BTU/h Cooling Capacity Low Ambient SHC Sensible Heat Capacity BTU/h Power Supply 115V Single Phase 60Hz Heating Capacity Heating CapacityTH Total Heating Capacity BTU/h 14,300 BTU/h Cooling Vertical distance ft Air Throw Distance ChartsRoom air temp F 26.7C Fan speed High Horizontal distance ft Heating Vertical distance ftHeating Electrical Characteristics Electrical DataCH0971 Cooling Electric Wiring Diagrams Indoor Unit KHS0971 KHS12718FA2-5257-71600-0 WHT RED Outdoor Unit CH0971 CH1271Address Setting of the Remote Control Unit MaintenanceON/OFF operation button HR.TIMER button ACL Reset button ION buttonHow to Connect How to DisconnectOperation Functions FunctionsEmergency operation Auto cooling/heating operationLamp colors Timer backupProtective Functions Compressor discharge temperature controlOverload prevention during heating Cold-air prevention during heatingDefrost detection and release CT Peak current cut-off controlReverse-Cycle Defrosting Troubleshooting Precautions before Performing Inspection or RepairMethod of Self-Diagnostics Indoor Unit Self-diagnostics LampsChecking the Indoor and Outdoor Units Using the TEST/T-RUN terminalsReplace the controller Replace the circuit board or the fuseOff Blinking Illuminated Serial Communication Error Identification ProcedureBefore the Operation Condition E01Terminal board Outdoor Unit Condition E12 Outdoor Fan Motor Trouble Diagnosis of Fan MotorNoise malfunction Noise Malfunction and Electromagnetic InterferenceElectromagnetic interference Locations most susceptible to noise Trouble CorrectionChecking Electrical Components Power Supply CordMeasurement of Insulation Resistance Measurement of Insulation Resistance for Electrical PartsChecking Continuity of Fuse on PCB Assy Characteristics of New Refrigerant R410A Refrigerant R410A Special Precautions When Servicing UnitWhat is New Refrigerant R410A? CharacteristicsChecklist before Servicing Tools Specifically for R410A Tubing Installation ProceduresCase of Compressor Malfunction Procedure for Replacing CompressorUnit. This may cause Never charge a large amountDamage to the compressor ExampleCase Refrigerant is Leaking Welding leaking pointsRecharging Charging Additional Refrigerant When Tubes are ExtendedRetro-Fitting Existing Systems Use of Existing UnitsOI-852-6-4180-802-00-2 Features Contents Alert SymbolsProduct Information Installation Location Safety InstructionsElectrical Requirements Outdoor Unit Names of PartsQuiet lamp Unit Display and Operation ButtonRemote Control Unit Display Remote Control Unit Hour OFF TimerOn Time Heat AutoDRY CoolTemperature Display Selector Using the Remote Control UnitHow to Install Batteries Button Time Display Selector buttonUsing the Remote Control Unit Operation with the Remote Control Unit StepPress the ON/OFF operation button Press the Mode selector button and select the desired mode Operation with the Remote Control UnitPress the TEMP. setting buttons to change the temperature Set the FAN Speed selector button to the setting you wantAdjusting the Fan Speed Night Setback Mode is used for saving energy Cooling and DRY ModeQuiet Mode Special Remarks Setting the Timer Example To set to 1030 pmOperation Indication How to set the on time Example To start operation at 710 am Setting the TimerTo cancel a timer program Press the Cancel button 1030 pm 710 am 1100 am Present timeSetting procedure Using the 1-Hour OFF TimerCancellation procedure Operation together with the Daily ON/OFF Repeat TimerCool Sweep DRY FAN Heat Adjusting the Airflow DirectionOperation without the Remote Control Unit Care and CleaningWhen the air conditioner is not running Cleaning Care and CleaningGrasp both ends of the air Intake grilleNegative ion generator metal electrodes inside plastic case Follow the steps below when the generator has become dirtyOperating Range TroubleshootingTrouble Possible Cause Remedy Max DB / 71 F WB Min DB / 57 F WBAppendix B Installation Instructions Contents Installation InstructionsPlease Read Before Starting Accessories Supplied with Unit Table Tools Required for Installation not suppliedGeneral Optional Copper Tubing KitInstallation Site Selection Additional Materials Required for InstallationAvoid Hole of the bottom plate Solid base must not coverTrical wiring or conduits are How to Install the Indoor UnitRemove the Rear Panel from the Unit Make a HoleInstall the Rear Panel on the Wall If Wooden WallIf Block, Brick, Concrete or Similar Type Wall How to replace the grille Remove the Grille to Install the Indoor UnitShape the Indoor Side Tubing Wiring Instructions General precautions on wiringWiring System Diagram Recommended Wire Length and DiameterWiring Instructions for Inter-unit Connections How to connect wiring to the terminal For Indoor Unit For Outdoor Unit For solid core wiring or F-cableFor stranded wiring Right-side tubing MountingSwitching drain hose and drain cap Left-side tubingDrain cap Tubing and wiring to the out Do not supply power toTo unmount indoor unit Unit or operate it until allHow to Install the Outdoor Unit First refer to . Installation Site SelectionWiring Instructions for the Outdoor Unit To 0.5 mm Adjust so that the amount of tube Flaring Procedure with a Flare ToolRefrigerant Tubing Use of the Flaring MethodFinishing the Installation Connecting Tubing between Indoor and Outdoor UnitsInsulation of Refrigerant Tubing To prevent heat loss and wet floors due to dripping of conAir Purging with a Vacuum Pump for Test Run Air PurgingTem. The valve core is similar to Those used in automobile tiresHex wrench before Be sure to completely insertThis may cause the refriger Ant gas to leak. In order toOperation lamp Timer lamp Quiet lamp ION lamp How to Test Run the Air ConditionerPump Down Basic Functions of the Service ValvesMounting on a Wall Remote Control Unit Installation PositionAddress Setting of the Remote Control Unit Address Switch

KHS1271

Remote Control Unit

CB-KHS1271

Microprocessor

250V 3A

Fan Motor

Flap Motor

Heat Exchanger Coil

DATA SUBJECT TO CHANGE WITHOUT NOTICE.