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8) no heater operation works – LG LF300CP(LP-C303R20) User Manual

Page 40

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8) No heater operation works

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

Is the heating operating?

Is the Compressor

operating?

Is the Heat S/W of Main

PCB "ON"?

Heat S/W "ON"

Replacement MICOM

Replacement ICO2M

Replacement RY-Heater

Is the DC 5V at 15 pin of

MICOM

Is the

DC 12V at eack terminal?

(RY-Heater COIL)

Is the

AC220V (AC 240 V) between

connector(HEATER) and CN-outunit Pin 1

of Main P.C.B

Check the heater wiring

Select the heating operation mode.

Compressor "ON"

This manual is related to the following products:
See also other documents in the category LG Conditioners: