LG Single "A" Service Manual page 93

5. Trouble Shooting
6.9 Check code Trouble shooting CH09, CH10
Display
Title
code
EEPROM
09
Check sum (Indoor)
BLDC motor
10
fan lock (Indoor)
Check Flow Chart
Check the indoor fan
motor. (Fan is locked by
obstruction)
Is it normal ?
Yes
Check the connection
status between PCB and
fan motor
Is it normal ?
Yes
Check the DC Motor
signal
Is it normal ?
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Only for training and service purposes
Cause of error
• Check sum error
• Fan motor break down
• Fan motor & PCB poor
contact
• Obstruction to the fan
No
Remove obstruction
No
Correct connection Or re-soldering PCB
No
Change Indoor Motor
- 92 -
Check point & Normal condition
• Check the poor soldering.
• Change PCB
• Check the indoor fan motor.
• Check the connection status between
• PCB and fan motor.
LGE Internal Use Only