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TECHNICAL & SERVICE MANUAL
STW-2 Series
PACKAGED TERMINAL
AIR CONDITIONERS (PTAC)
COOLING & ELECTRIC HEATING MODEL (230/208 V)
Capacity Class
Heater
2.55 kW
6,000 BTU
3.45 kW
2.55 kW
9,000 BTU
3.45 kW
5.00 kW
2.55 kW
12,000 BTU
3.45 kW
5.00 kW
2.55 kW
15,000 BTU
3.45 kW
5.00 kW
COOLING & ELECTRIC HEATING MODEL (265 V)
Capacity Class
Heater
3.00 kW
6,000 BTU
4.00 kW
3.00 kW
9,000 BTU
4.00 kW
3.00 kW
12,000 BTU
4.00 kW
5.00 kW
4.00 kW
15,000 BTU
5.00 kW
Model No.
Product Code No.
STW0622C2
1 851 006 46
STW0623C2
1 851 006 47
STW0922C2
1 851 006 48
STW0923C2
1 851 006 49
STW0925C2
1 851 006 50
STW1222C2
1 851 006 51
STW1223C2
1 851 006 44
STW1225C2
1 851 006 52
STW1522C2
1 851 006 53
STW1523C2
1 851 006 54
STW1525C2
1 851 006 55
Model No.
Product Code No.
STW0633C2
1 851 006 56
STW0634C2
1 851 006 57
STW0933C2
1 851 006 58
STW0934C2
1 851 006 59
STW1233C2
1 851 006 60
STW1234C2
1 851 006 61
STW1235C2
1 851 006 62
STW1534C2
1 851 006 63
STW1535C2
1 851 006 64
FILE NO.
PACKAGED TERMINAL
HEAT PUMPS (PTHP)
HEAT PUMP MODEL (230/208 V)
Capacity Class
Heater
2.55 kW
6,000 BTU
3.45 kW
2.55 kW
9,000 BTU
3.45 kW
5.00 kW
2.55 kW
12,000 BTU
3.45 kW
5.00 kW
2.55 kW
15,000 BTU
3.45 kW
5.00 kW
HEAT PUMP MODEL (265 V)
Capacity Class
Heater
3.00 kW
6,000 BTU
4.00 kW
3.00 kW
9,000 BTU
4.00 kW
3.00 kW
12,000 BTU
4.00 kW
5.00 kW
4.00 kW
15,000 BTU
5.00 kW
REFERENCE NO.
Destination: U.S.A.
Model No.
Product Code No.
STW0622H2
1 851 006 65
STW0623H2
1 851 006 66
STW0922H2
1 851 006 67
STW0923H2
1 851 006 68
STW0925H2
1 851 006 69
STW1222H2
1 851 006 70
STW1223H2
1 851 006 71
STW1225H2
1 851 006 72
STW1522H2
1 851 006 73
STW1523H2
1 851 006 74
STW1525H2
1 851 006 75
Model No.
Product Code No.
STW0633H2
1 851 006 76
STW0634H2
1 851 006 77
STW0933H2
1 851 006 45
STW0934H2
1 851 006 78
STW1233H2
1 851 006 79
STW1234H2
1 851 006 80
STW1235H2
1 851 006 81
STW1534H2
1 851 006 82
STW1535H2
1 851 006 83
SM
700508
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Table of Contents
Related Manuals for Sanyo STW-2 Series
Summary of Contents for Sanyo STW-2 Series
- Page 1 TECHNICAL & SERVICE MANUAL STW-2 Series FILE NO. Destination: U.S.A. PACKAGED TERMINAL PACKAGED TERMINAL HEAT PUMPS (PTHP) AIR CONDITIONERS (PTAC) COOLING & ELECTRIC HEATING MODEL (230/208 V) HEAT PUMP MODEL (230/208 V) Capacity Class Heater Model No. Product Code No.
- Page 2 IMPORTANT! When Installing Place of Installation Please Read Before Starting • If possible, install the unit in a shady location. This air conditioner meets strict safety and operating • Install it at a spot where optimum air circulation can be standards.
- Page 3 This manual is designed to help service personnel to understand basic functions, operation and possible problems and their remedies on SANYO Packaged Terminal Air Conditioner. You can use this manual both as a reference to find specific information about the capacity and construction of the unit, and as a source of information to help you set up and maintain the air conditioner.
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Page 4: Table Of Contents
Table of Contents Page 1. OPERATING RANGE ..........................1 2. SPECIFICATIONS 2-1. Unit Specifications .......................... 2 2-2. Major Component Specifications ....................6 2-3. Other Component Specifications....................10 3. DIMENSIONAL DATA..........................11 4. REFRIGERANT FLOW DIAGRAM ......................12 5. PERFORMANCE DATA 5-1. -
Page 5: Operating Range
1. OPERATING RANGE COOLING & ELECTRIC HEATING MODEL Models STW * * * * C2 Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp. Maximum 95°F D.B. / 71°F W.B. 115°F D.B. Cooling Minimum 67°F D.B. / 57°F W.B. 67°F D.B. Maximum 80°F D.B. -
Page 6: Specifications
2. SPECIFICATIONS 2-1. Unit Specifications 2-1-1. Cooling & Electric Heating Type (230/208 V) Model Number Heater class 2.55 kW STW0622C2 STW0922C2 STW1222C2 STW1522C2 3.45 kW STW0623C2 STW0923C2 STW1223C2 STW1523C2 5.00 kW STW0925C2 STW1225C2 STW1525C2 Voltage (V) 230 / 208 Performance COOLING &... - Page 7 2-1-2. Cooling & Electric Heating Type (265 V) Model Number Heater class 3.00 kW STW0633C2 STW0933C2 STW1233C2 4.00 kW STW0634C2 STW0934C2 STW1234C2 STW1534C2 5.00 kW STW1235C2 STW1535C2 Voltage (V) Performance COOLING & ELECTRIC HEATING Cooling capacity BTU/h 7,100 9,100 12,000 14,200 (kW) (2.08)
- Page 8 2-1-3. Heat Pump Type (230/208 V) Model Number Heater class 2.55 kW STW0622H2 STW0922H2 STW1222H2 STW1522H2 3.45 kW STW0623H2 STW0923H2 STW1223H2 STW1523H2 5.00 kW STW0925H2 STW1225H2 STW1525H2 Voltage (V) 230 / 208 Performance HEAT PUMP Cooling capacity BTU/h 7,100 / 7,000 9,000 / 8,800 12,000 / 11,800 14,000 / 13,800...
- Page 9 2-1-4. Heat Pump Type (265 V) Model Number Heater class 3.00 kW STW0633H2 STW0933H2 STW1233H2 4.00 kW STW0634H2 STW0934H2 STW1234H2 STW1534H2 5.00 kW STW1235H2 STW1535H2 Voltage (V) Performance HEAT PUMP Cooling capacity BTU/h 7,100 9,000 12,000 14,000 (kW) (2.08) (2.64) (3.52) (4.1) Heat pump capaciity...
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Page 10: Major Component Specifications
2-2. Major Component Specifications 2-2-1. Cooling & Electric Heating Type (230/208 V) STW0622C2 STW0922C2 STW1222C2 STW1522C2 Model Number STW0623C2 STW0923C2 STW1223C2 STW1523C2 STW0925C2 STW1225C2 STW1525C2 Controller PCB Part No. 851-0-5173-120-00 Controls POW-STW2C Compressor Type Rotary (Hermetic) Compressor model C-1R45H6Q C-1R65H6R C-R85H6P C-R112H6Y ( Parts code No. - Page 11 2-2-2. Cooling & Electric Heating Type (265 V) Model Number STW0633C2 STW0933C2 STW1233C2 STW0634C2 STW0934C2 STW1234C2 STW1534C2 STW1235C2 STW1535C2 Controller PCB Part No. 851-0-5173-174-00 Controls POW-STW2C3 Compressor Type Rotary (Hermetic) Compressor model C-1R45H9Q C-1R65H9R C-R85H9P C-R112H9Y ( Parts code No. ) 80646949-S 80665349-S 80685249-S...
- Page 12 2-2-3. Heat Pump Type (230/208 V) Model Number STW0622H2 STW0922H2 STW1222H2 STW1522H2 STW0623H2 STW0923H2 STW1223H2 STW1523H2 STW0925H2 STW1225H2 STW1525H2 Controller PCB Part No. 851-0-5173-089-00 Controls POW-STW2H Compressor Type Rotary (Hermetic) Compressor model C-1R45H6Q C-1R65H6R C-R85H6P C-R112H6Y ( Parts code No. ) 80646946-S 80665346-S 80685246-S...
- Page 13 2-2-4. Heat Pump Type (265 V) STW0633H2 STW0933H2 STW1233H2 Model Number STW0634H2 STW0934H2 STW1234H2 STW1534H2 STW1235H2 STW1535H2 Controller PCB Part No. 851-0-5173-175-00 Controls POW-STW2H3 Compressor Type Rotary (Hermetic) Compressor model C-1R45H9Q C-1R65H9R C-R85H9P C-R112H9Y ( Parts code No. ) 80646949-S 80665349-S 80685249-S 80614849-S...
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Page 14: Other Component Specifications
2-3. Other Component Specifications Models STW * * * * C2 Models STW * * * * H2 Electric Heater Ass'y (230/208 V) AH-T22 AH-T23 AH-T25 Model STW0622C2 STW0622C2 STW0623C2 STW0623H2 STW0922C2 STW0922H2 STW0923C2 STW0923H2 STW0925C2 STW0925H2 STW1222C2 STW1222H2 STW1223C2 STW1223H2 STW1225C2 STW1225H2 STW1522C2 STW1522H2 STW1523C2 STW1523H2 STW1525C2 STW1525H2 Heater element Rating (230 V) -
Page 15: Dimensional Data
3. DIMENSIONAL DATA Models STW * * * * C2 Models STW * * * * H2 Unit Dimensions Top view 21-1/2" 41-1/8" Front view Side view 7-1/2" Unit: inch Wall Sleeve Dimensions Dimensions of Wall Opening Wall opening of 42-1/4"... -
Page 16: Refrigerant Flow Diagram
4. REFRIGERANT FLOW DIAGRAM Models STW * * * * C2 Cooling & Electric Heating Models Compressor Accumulator Capillary tube Models STW * * * * H2 Heat Pump Models Accumulator 4-way valve Capillary tube Cooling cycle Heating cycle... -
Page 17: Performance Data
5. PERFORMANCE DATA 5-1. Cooling Capacity Model STW0622C2 / STW0623C2 Cooling & Electric Heating Models 230 V Single-phase 60 Hz RATING CAPACITY: 7,100 BTU/h AIR FLOW RATE: 315 CFM EVAPORATOR CONDENSER ENT. TEMP. °F (°C) AMBIENT TEMP. °F (°C) W.B. D.B. - Page 18 Model STW0922C2 / STW0923C2 / STW0925C2 Cooling & Electric Heating Models 230 V Single-phase 60 Hz RATING CAPACITY: 9,100 BTU/h AIR FLOW RATE: 315 CFM EVAPORATOR CONDENSER ENT. TEMP. °F (°C) AMBIENT TEMP. °F (°C) W.B. D.B. (23.9) (29.4) (35.0) (40.6) (46.1) 9,220...
- Page 19 Model STW1222C2 / STW1223C2 / STW1225C2 Cooling & Electric Heating Models 230 V Single-phase 60 Hz RATING CAPACITY: 12,000 BTU/h AIR FLOW RATE: 410 CFM EVAPORATOR CONDENSER ENT. TEMP. °F (°C) AMBIENT TEMP. °F (°C) W.B. D.B. (23.9) (29.4) (35.0) (40.6) (46.1) 12,160...
- Page 20 Model STW1522C2 / STW1523C2 / STW1525C2 Cooling & Electric Heating Models 230 V Single-phase 60 Hz RATING CAPACITY: 14,200 BTU/h AIR FLOW RATE: 410 CFM EVAPORATOR CONDENSER ENT. TEMP. °F (°C) AMBIENT TEMP. °F (°C) W.B. D.B. (23.9) (29.4) (35.0) (40.6) (46.1) 14,380...
- Page 21 Model STW0633C2 / STW0634C2 Cooling & Electric Heating Models 265 V Single-phase 60 Hz RATING CAPACITY: 7,100 BTU/h AIR FLOW RATE: 315 CFM EVAPORATOR CONDENSER ENT. TEMP. °F (°C) AMBIENT TEMP. °F (°C) W.B. D.B. (23.9) (29.4) (35.0) (40.6) (46.1) 7,190 6,840 6,450...
- Page 22 Model STW0933C2 / STW0934C2 Cooling & Electric Heating Models 265 V Single-phase 60 Hz RATING CAPACITY: 9,100 BTU/h AIR FLOW RATE: 315 CFM EVAPORATOR CONDENSER ENT. TEMP. °F (°C) AMBIENT TEMP. °F (°C) W.B. D.B. (23.9) (29.4) (35.0) (40.6) (46.1) 9,220 8,770 8,260...
- Page 23 Model STW1233C2 / STW1234C2 / STW1235C2 Cooling & Electric Heating Models 265 V Single-phase 60 Hz RATING CAPACITY: 12,000 BTU/h AIR FLOW RATE: 410 CFM EVAPORATOR CONDENSER ENT. TEMP. °F (°C) AMBIENT TEMP. °F (°C) W.B. D.B. (23.9) (29.4) (35.0) (40.6) (46.1) 12,160...
- Page 24 Model STW1534C2 / STW1535C2 Cooling & Electric Heating Models 265 V Single-phase 60 Hz RATING CAPACITY: 14,200 BTU/h AIR FLOW RATE: 410 CFM EVAPORATOR CONDENSER ENT. TEMP. °F (°C) AMBIENT TEMP. °F (°C) W.B. D.B. (23.9) (29.4) (35.0) (40.6) (46.1) 14,380 13,690 12,890...
- Page 25 Model STW0622H2 / STW0623H2 Heat Pump Models 230 V Single-phase 60 Hz RATING CAPACITY: 7,100 BTU/h AIR FLOW RATE: 315 CFM EVAPORATOR CONDENSER ENT. TEMP. °F (°C) AMBIENT TEMP. °F (°C) W.B. D.B. (23.9) (29.4) (35.0) (40.6) (46.1) 7,190 6,840 6,450 6,000 5,500...
- Page 26 Model STW0922H2 / STW0923H / STW0925H Heat Pump Models 230 V Single-phase 60 Hz RATING CAPACITY: 9,000 BTU/h AIR FLOW RATE: 315 CFM EVAPORATOR CONDENSER ENT. TEMP. °F (°C) AMBIENT TEMP. °F (°C) W.B. D.B. (23.9) (29.4) (35.0) (40.6) (46.1) 9,120 8,680 8,170...
- Page 27 Model STW1222H2 / STW1223H2 / STW1225H2 Heat Pump Models 230 V Single-phase 60 Hz RATING CAPACITY: 12,000 BTU/h AIR FLOW RATE: 410 CFM EVAPORATOR CONDENSER ENT. TEMP. °F (°C) AMBIENT TEMP. °F (°C) W.B. D.B. (23.9) (29.4) (35.0) (40.6) (46.1) 12,160 11,570 10,900...
- Page 28 Model STW1522H2 / STW1523H2 / STW1525H2 Heat Pump Models 230 V Single-phase 60 Hz RATING CAPACITY: 14,000 BTU/h AIR FLOW RATE: 410 CFM EVAPORATOR CONDENSER ENT. TEMP. °F (°C) AMBIENT TEMP. °F (°C) W.B. D.B. (23.9) (29.4) (35.0) (40.6) (46.1) 14,180 13,500 12,710...
- Page 29 Model STW0633H2 / STW0634H2 Heat Pump Models 265 V Single-phase 60 Hz RATING CAPACITY: 7,100 BTU/h AIR FLOW RATE: 315 CFM EVAPORATOR CONDENSER ENT. TEMP. °F (°C) AMBIENT TEMP. °F (°C) W.B. D.B. (23.9) (29.4) (35.0) (40.6) (46.1) 7,190 6,840 6,450 6,000 5,500...
- Page 30 Model STW0933H2 / STW0934H2 Heat Pump Models 265 V Single-phase 60 Hz RATING CAPACITY: 9,000 BTU/h AIR FLOW RATE: 315 CFM EVAPORATOR CONDENSER ENT. TEMP. °F (°C) AMBIENT TEMP. °F (°C) W.B. D.B. (23.9) (29.4) (35.0) (40.6) (46.1) 9,120 8,680 8,170 7,610 6,980...
- Page 31 Model STW1233H2 / STW1234H2 / STW1235H2 Heat Pump Models 265 V Single-phase 60 Hz RATING CAPACITY: 12,000 BTU/h AIR FLOW RATE: 410 CFM EVAPORATOR CONDENSER ENT. TEMP. °F (°C) AMBIENT TEMP. °F (°C) W.B. D.B. (23.9) (29.4) (35.0) (40.6) (46.1) 12,160 11,570 10,900...
- Page 32 Model STW1534H2 / STW1535H2 Heat Pump Models 265 V Single-phase 60 Hz RATING CAPACITY: 14,000 BTU/h AIR FLOW RATE: 410 CFM EVAPORATOR CONDENSER ENT. TEMP. °F (°C) AMBIENT TEMP. °F (°C) W.B. D.B. (23.9) (29.4) (35.0) (40.6) (46.1) 14,180 13,500 12,710 11,830 10,850...
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Page 33: Heating Capacity (Heat Pump Performance)
5-2. Heating Capacity (Heat Pump Performance) Heat Pump Models Models STW * * * * H2 Fan speed: High Outdoor ambient temperature (°F D.B.) NOTE … Point of rating condition Black dot in the chart indicates the following rating condition. Indoor: 70°F (21.1°C) D.B. -
Page 34: Electrical Data
6. ELECTRICAL DATA 6-1. Electrical Characteristics Cooling & electric heating models (230/208 V) COOLING STW0622C2 / 0623C2 Model Number : Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 230 / 208V, 1-phase 60Hz Rating conditions Running amps. - Page 35 Cooling & electric heating models (265 V) COOLING STW0633C2 / 0634C2 Model Number : Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 265V, 1-phase 60Hz Rating conditions Running amps. 0.09 0.32 1.99 Power input 0.025 0.085 0.500 0.61...
- Page 36 Heat pump models (230/208 V) COOLING STW0622H2 / 0623H2 Model Number : Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 230 / 208V, 1-phase 60Hz Rating conditions Running amps. 0.11 0.10 0.37 0.36 2.22 2.44 Power input 0.025 0.020...
- Page 37 HEATING STW0622H2 / 0623H2 Model Number : Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 230 / 208V, 1-phase 60Hz Rating conditions Running amps. 0.11 0.10 0.37 0.36 2.02 2.24 Power input 0.025 0.020 0.085 0.075 0.460 0.455...
- Page 38 Heat pump models (265 V) COOLING STW0633H2 / 0634H2 Model Number : Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 265V, 1-phase 60Hz Rating conditions Running amps. 0.09 0.32 1.99 Power input 0.025 0.085 0.500 0.61 Full load conditions Running amps.
- Page 39 HEATING STW0633H2 / 0634H2 Model Number : Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 265V, 1-phase 60Hz Rating conditions Running amps. 0.09 0.32 1.79 Power input 0.025 0.085 0.460 0.57 Full load conditions Running amps. 0.09 0.32 2.19...
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Page 40: Electrical Wiring Diagrams
To avoid electrical shock hazard, be sure to disconnect power before checking, servicing WARNING and/or cleaning any electrical parts. 6-2. Electrical Wiring Diagrams Cooling & electric heating models (230/208 V) JUMPER SELECTOR SELECTOR SWITCH OUTDOOR FAN MOTOR PNK(RED) CAPACITOR (FMO) THERMO THERMO (TEMP. - Page 41 To avoid electrical shock hazard, be sure to disconnect power before checking, servicing WARNING and/or cleaning any electrical parts. Cooling & electric heating models (265 V) JUMPER SELECTOR SELECTOR SWITCH OUTDOOR FAN MOTOR PNK(RED) CAPACITOR (FMO) THERMO THERMO (TEMP. SETTING) CLASS 2 INDOOR TRANS...
- Page 42 To avoid electrical shock hazard, be sure to disconnect power before checking, servicing WARNING and/or cleaning any electrical parts. Heat pump models (230/208 V) JUMPER REV. COIL (4-WAY VALVE) SELECTOR SELECTOR SWITCH OUTDOOR FAN MOTOR THERMO THERMO PNK(RED) CAPACITOR (FMO) (TEMP.
- Page 43 To avoid electrical shock hazard, be sure to disconnect power before checking, servicing WARNING and/or cleaning any electrical parts. Heat pump models (265 V) JUMPER REV. COIL (4-WAY VALVE) SELECTOR SELECTOR SWITCH OUTDOOR FAN MOTOR THERMO THERMO PNK(RED) CAPACITOR (FMO) (TEMP.
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Page 44: Electrical Parts Layout
To avoid electrical shock hazard, be sure to disconnect power before checking, servicing WARNING and/or cleaning any electrical parts. 6-3. Electrical Parts Layout Thermo set Selector switch Controller Fan cycle switch For class 2 remote and FDC Power cord (208/230V model only) Jumper wire (Red) Terminal base (265V model only) -
Page 45: Ass'y (Printed Pattern)
6-4. P.C.B. Ass'y (Printed Pattern) POW–STW2C (For cooling & electric heating models (230/208 V)) POW–STW2C3 (For cooling & electric heating models (265 V)) POW–STW2H (For heat pump models (230/208 V)) POW–STW2C3 (For heat pump models (265 V)) CONT CYCLE SW-STW2(SL) 1FA4B1A044400-0 COOL H HEAT H... -
Page 46: Troubleshooting
7. TROUBLESHOOTING 7-1. Check before and after troubleshooting WARNING Hazardous voltage can cause ELECTRIC SHOCK or DEATH. Disconnect power or turn off circuit breaker before you start checking or servicing. 7-1-1. Check power supply. Check that voltage is in specified range (±10% of the rating). Check that power is being supplied. -
Page 47: Air Conditioner Does Not Operate
If resistance value is 2MΩ or less, insulation is defective (“NO”). Power plug Wall outlet (208/230V model only) (Receptacle) Power Circuit STW-2 series air conditioner supply breaker Ground WARNING Set circuit breaker to OFF. 1 Pull the power plug out of the wall outlet. - Page 48 B. Circuit breaker trips in several minutes after turning the air conditioner on. There is a possibility of short circuit. • Check capacity of circuit breaker. Replace with suitable one (larger capacity). Capacity of circuit breaker is suitable. (Only for heat pump model) Measure resistance of fan motor •...
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Page 49: Some Part Of Air Conditioner Does Not Operate
7-3. Some part of air conditioner does not operate. 7-3-1. Only fan does not run. • Check fan casing Remove foreign foreign matter on matter or repair. Fan cannot inside. be turned. • Check fan rotation. Turn fan gently once or twice by hand. - Page 50 7-3-3. Only compressor does not run. A. Check setting temperature. COOL mode HEAT mode (Only for heat pump model) Is room temperature too low ? Is room temperature too high ? Try to lower setting temperature by Try to raise setting temperature by turning thermostat knob in cooler turning thermostat knob in warmer direction.
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Page 51: Air Conditioner Operates, But Abnormalities Are Observed
7-4. Air conditioner operates, but abnormalities are observed. 7-4-1. Operation does not switch from HEAT to COOL (or COOL to HEAT). (Only for heat pump model) • Measure resistance of 4–way valve's Check PCB Ass'y . (Controller) winding. (SC) 7-4-2. Poor cooling or heating. Temperature difference is small. -
Page 52: If A Sensor Is Defective
7-5. If a sensor is defective. (Only for heat pump model) 7-5-1. Room temp. thermistor (RTH) is defective. A. Open When thermistor opens, the air conditioner will be in the following conditions as the controller tries to detect extremely low room temperature. a) In Cooling mode: The air conditioner soon stops and will not start again. -
Page 53: Checking Electrical Components
8. CHECKING ELECTRICAL COMPONENTS 8-1. Measurement of Insulation Power plug (208/230V model only) Resistance The insulation is in good condition if the resistance Ground exceeds 2MΩ. Probe 8-1-1. Power Cord and Unit Insulation tester Fig. 1 Clamp the grounding prong of the power plug with a lead NOTE clip of the insulation resistance tester and measure the The shape of the power plug may differ from that... -
Page 54: Checking Motor Capacitor
8-2. Checking Motor Capacitor Remove the lead wires from the capacitor terminals, and then place probes on the capacitor terminals as shown in Fig. 4. Observe the deflection of the pointer, setting the resistance measuring range of the multimeter to the Multimeter maximum value. -
Page 55: Disassembly Procedure
9. DISASSEMBLY PROCEDURE 9-1. Removing Front Grille (1) Pull the bottom part of the front grille toward you. (Fig. 1- Wall sleeve Front grille (2) Lift up and unhook the grille to remove it. (Fig. 1- Fig. 1 Wall sleeve 9-2. -
Page 56: Removing Electric Heater
(3) Disconnect the wiring connectors and lead wires connecting the electrical parts in the electrical Electrical junction box junction box. (Figs. 5 and 6) Fig. 5 Fig. 6 9-4. Removing Electric Heater Air outlet frame ass´y (1) Remove the 4 screws holding the air outlet frame ass'y. -
Page 57: Removing Indoor Fan
9-5. Removing Indoor Fan Seal flange (1) Remove the seal flange by taking out 2 screws. (Fig. 9) Fig. 9 (2) Remove 2 screws holding the bearing ass'y from the chassis. (Fig. 10) Bearing ass´y NOTE When installing the bearing ass'y back on the chassis, be sure to line up the fan shaft with the bore of the "self-aligning bearing"... -
Page 58: Removing Indoor Fan Motor
9-6. Removing Indoor Fan Motor Indoor fan (1) Remove the 4 screws holding the indoor fan motor. (Fig. 14) Fig. 14 (2) Slide the motor out of the indoor fan hub. (Fig. 15) Indoor fan motor Fig. 15 9-7. Removing Evaporator (1) Remove the air outlet frame ass'y. -
Page 59: Removing Condenser
9-8. Removing Condenser (1) Remove the screws holding the condenser casing. (Fig. 17) Condenser casing Fig. 17 Condenser (2) Remove the screws holding the condenser at the bottom. (Fig. 18) Fig. 18 (3) Lift the condenser casing off the brackets on the Condenser casing front of the condenser end plates. -
Page 60: Removing Propeller Fan
9-9. Removing Propeller Fan Flat blade screwdriver (1) Remove the condenser. or socket wrench (10mm) Refer to “9-8. Removing Condenser.” (2) Loosen the bolt holding the propeller fan on the motor shaft using a flat blade screwdriver or socket wrench. (Fig. 21) Propeller fan Fig. -
Page 61: Function
10. FUNCTION 10-1. Room Temperature Control Room temperature control is obtained by cycling the compressor ON and OFF. Cooling & Electric Heating Models Cooling Once the compressor stops, it will not start running again for about 3 minutes (*). NOTE (*) Actual compressor OFF time indicated by "3 minutes"... - Page 62 Heat Pump Models Cooling Once the compressor stops, it will not start running again for about 3 minutes (*). NOTE (*) Actual compressor OFF time indicated by "3 minutes" varies between 2 minutes 45 seconds to 4 minutes. Thermo. ON : When the room temperature rises above T + 1°F (T°F is set temperature). Compressor Thermo.
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Page 63: Freeze Prevention
10-2. Freeze Prevention This function prevents freezing of the indoor heat exchange coil. When the temperature of the indoor heat exchange coil falls below 32°F, the compressor stops operation. The compressor does not start again until the temperature rises above 50°F. NOTE (*) Actual compressor OFF time indicated by "3 minutes"... -
Page 64: Defrosting Operation (Heating)
10-4. Defrosting Operation (Heating) Heat Pump Models Defrosting Flowchart Compressor ON Temperature of outdoor heat exchanger coil is below 14°F. Defrosting begins ⇒ OFF Compressor • ⇒ ON Electric heater • Temperature of outdoor heat exchanger coil is higher than 41°F. -
Page 65: Appendix
APPENDIX Control Panel Cooling & Electric Heating Models Heat Pump Models Mode Thermostat selector switch (88°F) (55°F) COOLER WARMER Thermostat Control The thermostat knob is used to control the room temperature. The unit automatically cycles on and off to maintain room temperature. A comfortable temperature will be maintained in most rooms when the control is set to about intermediate range. - Page 66 Fan Cycle Switch When set to CYCLE, indoor fan operation synchronizes with that of compressor's (or heater's) thermo ON and thermo OFF, thereby saving power. When set to CONT, the fan continues to operate regardless of thermo ON or thermo OFF condition. Cooling &...
- Page 67 Knock-out Hole for Fuse A knock-out hole is provided on the cover plate of the electrical junction box to mount the fuse and fuse holder. Be sure to comply with local codes on choosing the fuse and the holder. Fuse (Field supply) Holder (Field supply)
- Page 68 For Parts or Service Contact SANYO HVAC SERVICE CENTER SANYO Fisher Service Company 1165 Allgood Road, Suite 22, Marietta, GA 30062 U.S.A. Jan.30, 2002 300 Applewood Crescent, Concord, Ontario, L4K 5C7, CANADA...