Sanyo STB1010C1, STB0823H1 Some part of air conditioner does not operate, Only fan does not run

Page 35

7-3. Some part of air conditioner does not operate.

7-3-1. Only fan does not run.

•Check fan rotation.

Turn fan gently once or twice by hand.

•Measure resistance of fan motor winding.

OK

•Check fan motor capacitor and

4P-connectors (Socket and Plug).

(Only for heat pump model)

• Check PCB Ass'y . (Power pack)

Fan cannot be turned.

•Check fan casing foreign matter on inside.

Fan motor burnout or foreign matter in bearings.

Remove foreign matter or repair.

Repair or replace.

7-3-2. Electric heater does not work.

Both for (cooling & electric heating models) and (heat pump model)

•Measure resistance of electric heater winding.

•Check to see if the circuit of heater thermostat is opened or closed ?

•Check continuity for thermal fuses.

(Only for heat pump model)

• Check PCB Ass'y. (Power pack)

Blown

•Measure coil resistance of heater relay.

Replace them.

31

Image 35

Contents

Sanyo 26˝ Through the Wall AIR Conditioners & Heat Pump Please Read Before Starting Example HOW to USE this ManualTable of Contents STB0823H1 Operating RangeModels STB0810C1 STB1010C1 STB1020C1 STB1220C1 Models STB0811C1 STB1023C1 STB1123C1Unit Specifications SpecificationsCooling & Electric Heating Heat Pump Models STB0811C1 STB1023C1 STB1123C1 STB0823H1Compressor Major Component SpecificationsPOW-STBH Room Thermostat YTB-2U136 YTB-2U358 Other Component SpecificationsWall Sleeve Dimension Dimension of Wall Opening Dimensional DataModel STB0823H1 Refrigerant Flow DiagramCooling Capacity Performance Data10,200 BTU/h 700 BTU/h 11,500 BTU/h 000 BTU/h 500 BTU/h 11,300 BTU/h 980 810 650 490 300 070 22.8 Heating Capacity Heat pump Performance 100 Outdoor ambient temperature F DBCooling only models Electrical CharacteristicsElectrical Data Cooling & electric heating models Cooling Heat pump modelModels STB0810C1 STB1010C1 Electrical Wiring DiagramsModels STB1020C1 STB1220C1 Model STB0811C1 Models STB1023C1 STB1123C1 Model STB0823H1 Layout for Electric Parts POW-STBH For model STB0823H1 P.C.B. Assy Printed PatternCheck lead wires and connectors TroubleshootingCheck before and after troubleshooting Check power supplyCircuit breaker trips or fuse blows Air conditioner does not operateCheck transformer Power is not suppliedCheck Mode selector on the control panel Neither fan motor nor compressor motor runsElectric heater does not work Some part of air conditioner does not operateOnly fan does not run Cooling only models Cooling & electric heating models Check setting temperatureOnly compressor unit does not run Check compressor and electrical partsExcessive cooling or heating Operation does not switch from Heat to Cool or Cool to HeatAir conditioner operates, but abnormalities are observed Poor cooling or heatingShort If a sensor is defective. Only for heat pump modelRoom temp. thermistor RTH is defective OpenMeasurement of Insulation Resistance for Electrical Parts Power Cord and UnitChecking Electrical Components Measurement of Insulation ResistanceChecking Thermistor Checking Motor CapacitorChecking Fan Motor Winding Checking Compressor Motor WindingRemoving Electrical Component Box Disassembly ProcedureRemoving Front Grille Removing Wall SleeveRemoving Electric Heater Removing Evaporator Removing Blower WheelRemoving Propeller Fan Removing CondenserRemoving Fan Motor Cooling Room Temperature ControlFunction Heating Heat Pump Model Model STB0823H1 Heating Except during defrosting operationDefrosting Operation Heating Heat Pump Model Model STB0823H1 Defrosting FlowchartDefrosting Mode Timing Chart Heat Pump Model STB0823H1 AppendixFan Switch Sanyo Hvac Service Center

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