LG Electronics LRTN22310, LRTN19310 service manual Function, Freezer FAN, Defrost, Heater OFF

7. DESCRIPTION OF FUNCTION & CIRCUIT OF MICOM

7-1 FUNCTION

7-1-1 Function

1.When the appliance is plugged in, it is set to "3" for the Refrigerator.

You can adjust the Refrigerator control temperature by pressing the ADJUST button.

2.When the power is initially applied or restored after a power failure, it is automatically reset to "3".

1 2 3 4 5

WARMERCOLDER

TEMPERATURE

ADJUST

7-1-2 Defrost Cycle

1.A defrost cycle will be initiated after 4 hours of accumulated compressor run time after the initial power up or a power failure.

2.After the initial defrost, the defrost cycle is initiated after 7 hour of accumulated compressor run time.

3.The defrost cycle will be terminated once the defrost sensor reaches 50°F(10°C).

7-1-3 Electrical Parts Operates in Orders

Electrical parts such as COMP, defrost heater, freezer FAN, etc. operate in the following order to prevent noise and parts damage. Several parts are started at the same time at initial power on and are turned off together when TEST is completed.

OPERATING

	Temperature of Defrost
	Sensor is 113°F(45°C) or
	more (when unit is newly
Initial	purchased or when moved)
power	Temperature of defrost
on	sensor is lower than
	113°F(45°C) (when power
	cuts, SERVICE)

Reset to normal operation from TEST MODE

ORDERS

POWER		in 1/2 second				COMP &
						Freezer FAN
	ON
							ON
POWER			in 1/2 second				Defrost in 10 second	Defrost
	ON						heater ON	heater OFF
				COMP &
	in 1/2 second
				Freezer FAN
	Total load				ON		COMP &
				in 7 minute
							Freezer FAN
	OFF
							ON

- 16 -