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Troubleshooting Guide
When indoor Fan does not operate.
• The pin NO 58 of Micom, and the part for driving TRIAC(the input and
output signal of IC01M, PIN NO 1, 16)
• Check the pattern
• Check the TRIAC
- TRIAC Open: Indoor Fan Motor never operate
- TRIAC short: Indoor Fan Motor always operates in case of ON or OFF.
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Only for training and service purposes
Turn off Main power
Check the connection of CN-MOTOR
Check the Fan Motor
Check the Fuse(AC250V/T2A)
Check the related circuit of indoor Fan Motor.
Turn ON Main Power
Check the TRIAC high speed operation by remote control.
(The Indoor Fan Motor is connected)
The voltage of PIN NO 1(orange) and 3(yellow) of CN-MOTOR.
About AC 180V over
TRIAC is not damaged
About AC 50V over
TRIAC Check
- 58 -
LGE Internal Use Only
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