Sanyo STB0810C1, STB0811C1, STB0823H1, STB1010C1, STB1020C1, STB1023C1, STB1123C1, STB1220C1 7. TROUBLESHOOTING

7. TROUBLESHOOTING

7-1. Check before and after troubleshooting

7-1-1. Check power supply.

●Check that voltage is in specified range (±10% of the rating).

●Check that power is being supplied.

7-1-2. Check lead wires and connectors.

●Check that coating of lead wires is not damaged.

●Check that lead wires and connectors are firmly connected.

●Check that wiring is correct.

WARNING

Hazardous voltage can cause ELECTRIC

SHOCK or DEATH. Disconnect power or turn

off circuit breaker before you start checking

or servicing.

Contents

Main TECHNICAL & SERVICE MANUAL IMPORTANT! Please Read Before Starting When Wiring When Transporting When Installing When Servicing STB 1 0 2 3 C 1 Table of Contents 1. OPERATING RANGE 2. SPECIFICATIONS 2-1. Unit Specifications Models STB0810C1 STB1010C1 STB1020C1 STB1220C1 Models STB0811C1 STB1023C1 STB1123C1 STB0823H1 2-2. Major Component Specifications Models STB0810C1 STB1010C1 STB1020C1 STB1220C1 Models STB0811C1 STB1023C1 STB1123C1 STB0823H1 2-3. Other Component Specifications Models STB0810C1 STB1010C1 STB1020C1 STB1220C1 STB0811C1 STB1023C1 STB1123C1 STB0823H1 3. DIMENSIONAL DATA Models STB0810C1 STB1010C1 STB1020C1 STB1220C1 STB0811C1 STB1023C1 STB1123C1 STB0823H1 Unit : inch Dimension of Wall Opening Front view 4. REFRIGERANT FLOW DIAGRAM Models STB0810C1 STB1010C1 STB1020C1 STB1220C1 STB0811C1 STB1023C1 STB1123C1 5. PERFORMANCE DATA 5-1. Cooling Capacity Model STB0810C1 Model STB1010C1 Model STB1020C1 Model STB1220C1 Page Model STB1023C1 Model STB1123C1 Page 5-2. Heating Capacity (Heat pump Performance) 100 Outdoor ambient temperature (F DB) Heating capacity ratio (%) 47 6. ELECTRICAL DATA 6-1. Electrical Characteristics Model STB0810C1 Model STB1010C1 Model STB1020C1 Model STB1023C1 Model STB1123C1 Cooling & electric heating models Heat pump model 6-2. Electrical Wiring Diagrams Models STB0810C1 STB1010C1 Models STB1020C1 STB1220C1 Page Models STB1023C1 STB1123C1 Page WARNING LAYOUT FOR ELECTRIC PARTS Page 7. TROUBLESHOOTING 7-1. Check before and after troubleshooting 7-1-1. Check power supply. 7-1-2. Check lead wires and connectors. 7-2. Air conditioner does not operate. 7-2-1. Circuit breaker trips (or fuse blows). 7-2-2. Neither fan motor nor compressor motor runs. A. Power is not supplied. B. Check "MODE selector" on the control panel. C. Check transformer. 7-3. Some part of air conditioner does not operate. 7-3-1. Only fan does not run. 7-3-2. Electric heater does not work. 7-3-3. Only compressor unit does not run. 7-4. Air conditioner operates, but abnormalities are observed. 7-4-3. Excessive cooling or heating. 7-5. If a sensor is defective. (Only for heat pump model) 7-5-1. Room temp. thermistor (RTH) is defective. 8-1. Measurement of Insulation Resistance 8-1-1. Power Cord and Unit 8-1-2. Measurement of Insulation Resistance for Electrical Parts 8. CHECKING ELECTRICAL COMPONENTS 8-2. Checking Motor Capacitor 8-3. Checking Fan Motor Winding 8-4. Checking Compressor Motor Winding 8-6. Checking Thermistor 9. DISASSEMBLY PROCEDURE 9-4. Removing Electric Heater 9-5. Removing Blower Wheel 9-6. Removing Evaporator 9-7. Removing Condenser 9-8. Removing Propeller Fan 9-9. Removing Fan Motor 10. FUNCTION 10-1. Room Temperature Control Heating Heating (Except during defrosting operation) 10-2. Defrosting Operation (Heating) Control Panel Heat Pump Model Model STB0823H1 HIGH THERMOSTAT SELECTOR APPENDIX Fan Switch

Sanyo 7. TROUBLESHOOTING

Models: STB0810C1 STB0811C1 STB0823H1 STB1010C1 STB1020C1 STB1023C1 STB1123C1 STB1220C1

7-1. Check before and after troubleshooting

7-1-1. Check power supply.

7-1-2. Check lead wires and connectors.