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Only for training and service purposes

LGE Internal Use Only

8) Troubleshooting CH24, CH25

CN TRNAS1

CN PRESS

TRANS1

50Hz, DC12V

Press S/W Open

Input voltage

• Low / High press

S/W open.

• Abnormal Input voltage

(140Vac , 300Vac .

• Check the connection of “CN_Press”.

• Check the components.

• Check the power source.

• Check the components.

Display

code

Title Cause of error Check point & Normal condition

Check Point

• CH 24

1. Check the connection of “CN_PRESS”

2. Check the install condition for over load.

3. Check the SVC V/V open.

4. Check the leakage of refrigerant.

• CH 25

1. Check the power source.

2. Check the components

(Trans1, B/Diode, Diode, Resistance)

Troubleshooting Guide

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