SHARP SJ-43L-T2G
Service Manual

SJ-43L-T2 SJ-47L-T2

2. DEFROSTING (1) No defrosting operation is necessary No defrosting operation is necessary. As this machine is so designed that a built-in evaporator cools air and a fan circulates cooled air, neither the freezer nor the refrigerator is frosted, though the evaporator is frosted. The frosted evaporator is defrosted automatically due to the function of defrosting timer and heater, requiring no defrosting operation.

(2) Where is melted frost brought 1. Melted frost is brought into the evaporating pan at the back of the set and is evaporated here by the heat of compressor. 2. Be sure to use Evaporating pan as inserted so as to be level with the outer case.

(3) The following circuit diagrams in the table show automatic defrosting function of the refrigerator with timer and defrost thermostat. Operation 1. Cooling (Normal) Electric diagram
Defrost thermostat ON Compressor running Timer motor running Thermostat Timer contact

Description The integration timer integrates running time of the compressor. When it reaches cycle time of defrost timer, the timer contact is changed to start defrosting.

Thermo. fuse

Defrost heater Defrost thermostat (ON)

TM

COMP

Figure F-3. 2. Defrosting
(Time 20 to 30 min.)
Thermostat Defrost thermostat ON Compressor stops Timer motor stops Timer contact

Thermo. fuse

Defrost heater
S O U R C E

TM

COMP

The timer contact is changed to start defrosting, the timer motor stops, and power is supplied to the defrost heater. It takes about 20 to 30 min. to defrost. When little frosted, the defrosting takes little time. When much frosted, the defrosting takes much time.

Defrost thermostat (ON)

Figure F-4 . 3. Drain
(Time approx. 5 min.)
Thermostat Defrost thermostat OFF Compressor stops Timer motor running Timer contact

Thermo. fuse

When the defrost thermostat becomes OFF, the timer motor starts running. During the operation time (delay time of defrost time) defrosted water is drained outside the refrigerator.

Defrost heater

TM

COMP

Defrost thermostat (OFF)

Figure F-5. 4. Restart
(Time approx. 5 min.)
Thermostat Defrost thermostat OFF Compressor running Timer motor stops Timer contact

Thermo. fuse

Defrost heater

TM

COMP

Timer contact is changed to cooling operation and the compressor starts running and the timer motor stops. Defrost thermostat contact becomes ON when it�s cooled. And the timer motor starts running. (Figure F-3.)
C m p e s o r

Defrost thermostat (OFF)

Figure F-6.

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