Sanyo SA-128S5-A Technical & Service Manual Download Page 26

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APPENDIX

●

If the unit is turned off during cooling, DO NOT restart it immediately, as this can damage it. Wait at least three
minutes before starting it again.

●

Set the selector to TEST RUN only when performing a test cooling operation. Never leave the selector in this
position. Otherwise, the evaporator coil may freeze up during cooling.

CAUTION

Model

SA– 128S5

FAN

SPEED

OPERATION

OFF

WAIT 3 MINUTES BEFORE RESTARTING

AUTO

DEFLECTOR

LOW

HIGH

COOLER

THERMOSTAT

THERMOSTAT
knob

AUTO DEFLECTOR
switch

VENTILATOR
lever

OPERATION
SELECTOR
switch

FAN SPEED
selector

Unit Display and Control Panel

Summary of Contents for SA-128S5-A

Page 1: ...TECHNICAL SERVICE MANUAL SA 128S5 FILE NO REFERENCE NO SM700338 WINDOW TYPE AIR CONDITIONER Model No Product Code No SA 128S5 Destination SA 128S5 A 1 851 004 09 General 50Hz Europe ...

Page 2: ... reduce strain on your back Sharp edges or thin aluminum fins on the air conditioner can cut your fingers WARNING When Installing Place of Installation If possible install the unit in a shady location If the site is exposed to the sun you should provide a sun screen as shown in Fig a Install it at a spot where optimum cooling circulation can be obtained No chairs or other obstructions are allowed ...

Page 3: ...ning well and keep your customer satisfied Please read IMPORTANT precautional information on the previous page before you start actual work SANYO WINDOW TYPE A C NOMENCLATURE SANYO window type air conditioner is identified by a model number Cooling or heating capacity electrical information and special features included on the air conditioner are indicated on the model number ii Example SA 12 8 S ...

Page 4: ...es not operate 11 7 3 Some part of air conditioner does not operate 13 7 4 Air conditioner operates but abnormalities are observed 15 8 CHECKING ELECTRICAL COMPONENTS 8 1 Measurement of Insulation Resistance 16 8 2 Checking Motor Capacitor 17 8 3 Checking Fan Motor Winding 17 8 4 Checking Compressor Motor Winding 17 9 DISASSEMBLY PROCEDURES 9 1 Removing Front Grille 18 9 2 Removing Electrical Comp...

Page 5: ...1 1 OPERATING RANGE Temperature Indoor Air Intake Temp Outdoor Air Intake Temp Cooling Maximum 32 C D B 23 C W B 43 C D B Minimum 19 C D B 14 C W B 19 C D B ...

Page 6: ...ical Thermostat Control unit Timer Fan speeds 2 Airflow direction Indoor Horizontal Auto Vertical Manual Air filter Air exhaust Washable Yes Compressor Rotary Hermetic Refrigerant Amount charged at shipment g R22 780 Refrigerant control Capillary tube Operation sound Indoor Hi Lo dB A 52 50 Outdoor Hi Lo dB A 56 52 Slide out chassis Yes Accessories Dimensions Weight Unit dimensions Height mm 375 W...

Page 7: ...p Ambient temp 25 C Trip in 6 to 16 sec at 22 5A Run capacitor µF 25 0 VAC 400 Fan Fan Motor Indoor Outdoor Type Centrifugal Propeller Dia Depth mm ø210 D96 ø320 D Fan motor model Q ty YSK70 4A 661 1 Source 220 240V Single phase 50Hz No of poles rpm 230 V High 4 1 010 Nominal output W 20 Coil resistance Ambient temp 20 C Ω WHT BRN 60 0 WHT YEL 19 6 YEL ORG PNK 62 7 Safety devices Type Internal pro...

Page 8: ...4 Model SA 128S5 Auto Deflector Motor M16B Rating AC 220 240V 50 60Hz 3 W 4 2 5 0 rpm Coil resistance kΩ at 25 C 11 15 5 2 3 Other Component Specification ...

Page 9: ...8S5 248 530 375 40 248 620 Slits for ventilation Side view L Front view Side view R Power code outlet Power code outlet Unit mm Dimension with mark indicates the maximum allowable wall thickness required for ventilating the unit NOTE ...

Page 10: ...4 REFRIGERANT FLOW DIAGRAM 6 Model SA 128S5 Compressor Accumulator Condenser Evaporator Capillary tube Strainer ...

Page 11: ...3 34 3 07 CM 0 96 1 03 1 11 1 19 1 33 1 47 21 SHC 1 74 1 66 1 57 1 49 1 40 1 28 19 23 SHC 2 01 1 93 1 84 1 76 1 67 1 55 25 SHC 2 28 2 20 2 12 2 03 1 94 1 82 27 SHC 2 55 2 47 2 39 2 31 2 21 2 09 29 SHC 2 82 2 74 2 66 2 58 2 48 2 37 31 SHC 3 10 3 01 2 93 2 85 2 75 2 64 TC 4 33 4 14 3 95 3 76 3 54 3 25 CM 0 98 1 06 1 14 1 22 1 37 1 51 23 SHC 1 71 1 62 1 54 1 46 1 37 1 26 21 25 SHC 1 98 1 90 1 81 1 73...

Page 12: ...ps A 0 69 0 73 5 6 5 5 6 3 6 2 Power Input kW 0 152 0 173 1 15 1 19 1 30 1 36 Full Load Conditions Running Amps A 0 69 0 73 7 2 7 0 7 9 7 7 Power Input kW 0 152 0 173 1 52 1 55 1 67 1 72 Rating Conditions Indoor Air Temperature 27 C D B 19 C W B Outdoor Air Temperature 35 C D B Full Load Conditions Indoor Air Temperature 32 C D B 23 C W B Outdoor Air Temperature 43 C D B ...

Page 13: ...L GRN YEL GRN YEL GRN YEL Auto deflector motor Auto deflector swithc BLU BLU BLU BLU RED RED RED YEL BRN WHT BLK BLK BLK 1 2 L BRN BRN BLU ORG PNK FM WHT Compressor motor RED RED Capacitor Capacitor Power supply To avoid electrical shock hazard be sure to disconnect power before checking servicing and or cleaning any electrical parts WARNING DATA SUBJECT TO CHANGE WITHOUT NOTICE ...

Page 14: ...k 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 10 Hazardous voltage can cause ELECTRIC SHOCK or DEATH Disconnect power or turn off circuit breaker before you start checking or servicing WARNING ...

Page 15: ...rom circuit with other parts properly connected and then measure insulation resistance of entire air conditioner again to locate defective part 2 Replace defective part with new one NOTE Measure insulation resistance of electrical parts Example Compressor Fan motor Capacitor Relay etc NO Set circuit breaker to OFF 1 Pull the power plug out of the wall outlet Measure insulation resistance of unit I...

Page 16: ... If it is set at OFF Check that OPERATION SELECTOR switch is not set at OFF Set to ON NO Check power supply Power is being supplied to the unit Circuit breaker is tripped Power failure Reset breaker Wait for recovery or contact power company Replace with suitable one larger capacity NO Check capacity of circuit breaker Capacity of circuit breaker is suitable Measure resistance of fan motor winding...

Page 17: ...t be turned OK Check fan rotation Turn fan gently once or twice by hand Check fan casing foreign matter on inside Fan motor burnout or foreign matter in bearings Remove foreign matter or repair Repair or replace Measure resistance of fan motor winding Check fan motor capacitor 13 Measure resistance of auto deflector motor winding ...

Page 18: ...s before starting it again CAUTION Check compressor motor capacitor Measure resistance of compressor motor winding NO YES YES Overload relay is working YES Temperature of compressor is abnormally high Refrigerant gas shortage Charge refrigerant gas R22 Rotor may be locked up Measure power supply voltage The voltage is too low No NO Is room temperature too low Try to lower setting temperature by th...

Page 19: ...ES Temperature difference between suction and discharge air is large enough approx 10 deg or more Possibility of gas shortage Measure temperature of suction and discharge air of air conditioner Charge refrigerant gas R22 Check for clogging of air filter Fan speed is set to LOW Clean filter Set fan speed to HIGH Review cooling load estimate if performance of air conditioner is normal Reduce cooling...

Page 20: ...be on either of the two power blade Fig 1 Then also measure the resistance between the grounding prong and other power blade Fig 1 8 1 2 Measurement of Insulation Resistance for Electrical Parts Disconnect the lead wires of the desired electric part from terminal plate switch capacitor etc Similarly disconnect the connector Then measure the insulation resistance Figs 2 to 3 Refer to Electric Wirin...

Page 21: ...easure the resistance between each lead wire with a tester The tester should be set in the X1 range If the fan motor is hot allow a few minutes until it gets cooled down When the resistances between each lead wire are those listed in 2 2 Major Component Specifications the fan motor should be normal 8 4 Checking Compressor Motor Winding Checking compressor motor winding can be done in the similar m...

Page 22: ...he slots 4 Pull the bottom portion of the grille toward you while paying attention to the ventilator lever Fig 2 and 4 Pulling out too far on the bottom of the grille at this point could damage the tabs at the top Do not pull the grille out more than 100 mm 5 After confirming that the ventilator lever has been disengaged from the grille vent slide the grille upward to free the two tabs at the top ...

Page 23: ...g the electrical component box Fig 6 9 3 Removing Cabinet 1 Remove screws holding the unit Fig 7 2 Remove the front grille Refer to 9 1 Removing Front Grille 3 Remove the stopper screw attached to the base pan of the unit Fig 8 4 While holding top of the cabinet with one hand grasp the handle with another hand and pull the unit toward you Fig 9 Fig 9 Fig 6 ...

Page 24: ...evaporator with both hands and tilt it slightly and lift it carefully from the drain pan so as not to distort the copper tube 9 5 Removing Blower Wheel 1 Remove the evaporator Refer to 9 4 Removing Evaporator 2 Loosen a nut holding blower wheel on motor shaft using hex wrench Fig 11 3 Remove the housing of blower wheel 4 Extract the blower wheel from the motor shaft ...

Page 25: ... to 9 6 Removing Condenser 2 Loosen a nut holding propeller fan on motor shaft using hex wrench Fig 13 To loose the nut securing the propeller fan hold the fan with one hand and turn the nut COUNTERCLOCKWISE with another hand 3 Extract the propeller fan from the motor shaft 9 8 Removing Fan Motor 1 Remove blower wheel Refer to 9 5 Removing Blower Wheel 2 Remove propeller fan Refer to 9 7 Removing ...

Page 26: ...ing a test cooling operation Never leave the selector in this position Otherwise the evaporator coil may freeze up during cooling CAUTION Model SA 128S5 FAN SPEED OPERATION OFF OFF ON ON WAIT 3 MINUTES BEFORE RESTARTING AUTO DEFLECTOR LOW HIGH 1 3 5 7 9 11 COOLER THERMOSTAT THERMOSTAT knob AUTO DEFLECTOR switch VENTILATOR lever OPERATION SELECTOR switch FAN SPEED selector Unit Display and Control ...

Page 27: ...SANYO Electric Co Ltd Osaka Japan SM700338 04 98 200 Printed in Japan ...

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