LG Electronics LF300CP(LP-C303R20), LF480CE(LP-C483TA0) service manual No heater operation works

8) No heater operation works

Is the heating operating?		NO
	YES
Is the Compressor		NO
operating?
	YES
		NO
Is the Heat S/W of Main
PCB "ON"?

YES

Is the DC 5V at 15 pin of		NO
MICOM
	YES
Is the		NO
DC 12V at eack terminal?
(RY-Heater COIL)
	YES
Is the		NO
AC220V (AC 240 V) between
connector(HEATER) and CN-outunit Pin 1
of Main P.C.B
	YES
Check the heater wiring

Select the heating operation mode.

Compressor "ON"

Heat S/W "ON"

Replacement MICOM

Replacement ICO2M

Replacement RY-Heater

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