LG LCU240CP Service Manual - Page 36

When indoor Fan does not operate

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Troubleshooting Guide Trouble 4 When indoor Fan does not operate Turn off Main power Check the connection of CN-FAN or CN-MOTOR Check the Fan Motor Check the Fuse(AC250V/T2A) Check the related circuit of indoor Fan Motor. • The pin of Micom, and the part for driving SSR • Check the pattern • Check the SSR - SSR Open: Indoor Fan Motor never operate - SSR short: Indoor Fan Motor always operates in case of ON or OFF. Turn ON Main Power Check the SSR high speed operation by remote control. (The Indoor Fan Motor is connected) The voltage of PIN NO 1(blue) and 3(yellow) of CN-FAN or CN-MOTOR. About AC 160V over SSR is not damaged About AC 50V over SSR Check 36 Ceiling Cassette Air Conditioner

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36
Ceiling Cassette Air Conditioner
Troubleshooting Guide
When indoor Fan does not operate
Trouble 4
Check the SSR high speed operation by remote control.
(The Indoor Fan Motor is connected)
Turn off Main power
Check the connection of CN-FAN or CN-MOTOR
Check the Fan Motor
Check the Fuse(AC250V/T2A)
Turn ON Main Power
Check the related circuit of indoor Fan Motor.
•
The pin of Micom, and the part for driving SSR
•
Check the pattern
•
Check the SSR
- SSR Open: Indoor Fan Motor never operate
- SSR short: Indoor Fan Motor always operates in case of ON or OFF.
The voltage of PIN NO 1(blue) and 3(yellow) of CN-FAN or CN-MOTOR.
About AC 160V over
About AC 50V over
SSR is not damaged
SSR Check