Sanyo XS1852 Check Operation selector switch in the indoor unit, Transformer in indoor unit

Page 33

11. SERVICE PROCEDURES

C. Check “Operation selector” switch in the indoor unit.

	• Has “Operation selector”		YES
	switch been set to ON		YES
	switch been set to ON
	position ?

		NO

	Set “Operation selector”
	switch to ON.

But neither unit runs.

Switch Ass’y or P.C.B. Ass’y in the indoor unit is defective.

IND. LAMP Ass’y or P.C.B. Ass’y in the indoor unit

is defective.

0617_X_S

D.Transformer in indoor unit.

•Check resistance of transformer winding. (TR1)

1033_X_S

E.Check. auxiliary relay.

•Check coil resistance of auxiliary relay.

(RY1-RY5)

1894_X_I

SM830079

– 33 –

Image 33

Contents Indoor Unit Outdoor Unit XS1852 C1852 Technical DataIf Necessary, Get Help Please Read Before StartingTable of Contents Introduction Read Me First Operating Range XS1852 / C1852XS1852 / CL1852 Unit Specifications SpecificationsData Subject to Change Without Notice Fan motor Major Component Specifications Indoor UnitCompressor Major Component Specifications Outdoor UnitModel No XS1852 Power Transformer Other Component Specifications Indoor UnitModel No CL1852 Other Component Specifications Outdoor UnitIndoor Unit XS1852 Dimensional DataOutdoor Unit C1852, CL1852 230V Performance ChartsModel XS1852 AIR Throw Distance ChartRefrigerant Flow Diagram Insulation of Refrigerant TubingTo prevent heat loss and wet floors due to dripping Tubing Length Installation InstructionsAvoid Selecting the Installation SiteÃInstall the outdoor unit Choose a place that is well ventilatedBaffle Plates for the Outdoor Unit CL×× models only Electrical Wiring General Precautions on Wiring Models Wiring System DiagramElectrical Data Electrical Wiring Diagrams Electric Wiring DiagramSchematic Diagram Outdoor Unit C1852 Outdoor Unit CL1852 Processes and Functions Room Temperature ControlDrain Pump Control Freeze PreventionMedium Service Procedures 1334XS There is a possibility of short circuit Check remote control unitCheck Operation selector switch in the indoor unit Transformer in indoor unitCheck. auxiliary relay FMI Check fuse on the P.C.B. Ass’y in the indoor unitCheck Cool / FAN selector switch in the remote control unit Check set temperatureOutdoor Unit does not Run Check compressor motor magnetic contactor Check float switch Refer to 11 Drain Pump ControlIndoor fan and louver motor do not run Indoor Unit does not RunSome Part does not Operate Indoor fan does not runOutdoor Fan does not Run Outdoor Fan does not Run for CL1852Compressor does not Run Excessive Cooling Poor CoolingOperation of Major Electrical Parts Room temp. Sensor in the remote control unit is defectiveMeasurement of Insulation Re- sistance for Electrical parts Power Supply WiresCompressor motor thermal protector . . . . . . Outdoor unit Checking the Protective DevicesMotor capacitor Both in indoor and outdoor unit Indoor fan motor FMI Indoor unit Measure the coil resistanceThermistor Characteristic Curve Continuity of fuse on P.C.B. Ass’yMethod Used to Replace Fuse on PCB Ass’y Central Region

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