Elba R410A Guía para resolver problemas descargar pdf (Pagina 78)

Troubleshooting Guide

- 82 -

Only for training and service purposes

LGE Internal Use Only

3. Electronic Parts Troubleshooting Guide

❇ Refer to electronic contorol device drawing & schematic diagram.

The Product doesn’t operate at all.

Turn off the main power and wait until LED on outdoor PCB is off.

Turn on the main power again.

Does "Beeping" sound is made from the indoor unit?

• Primarily, the operating condi-

tion of Micom is O.K.

• Check CN-DISP1

Check the voltage of power(AC220V/AC240V, 50Hz).

• The voltage of main power.

• The voltage applied to the unit.

• The connecting method of Indoor/Outdoor connecting cable (each color)

• The P.W.B. Ass'y

(Fuse, Noise Filter, Power Transformer, IC01D, IC02D, etc.)

Trouble 1

YES

The operation check of the P.C.B. Ass'y

Procedure

1) The input voltage of power trans-

former.

2) The output voltage of power

transformer.

3) IC01D(7812)

4) IC02D(7805)

5) IC01A(KIA7036)

Specification

1) AC230V ± 30V

: Check the rated voltage

2) 14V ± 3V

3) DC12V

4) DC5V

5) The voltage of micom pin 29

: DC4.5V↑

Remedy

1) Replace

power transfomer.

2) Replace

power transfomer.

3) Replace IC01D.

4) Replace IC02D.

5) Replace IC01A.

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Elba R410A Guía para resolver problemas Pagina 78

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