LG LP-C508T / LP-H508T / LP-Z508T Service Manual ▷ View online
Service Manual 57
Troubleshooting guide
2-1) Indoor fan does not operate
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
Is the unit
operating?
Is the DC5V
at 20pin of
(MICOM)?
Is the DC5V
at 21pin of
(MICOM)?
Is the DC5V
at 22pin of
(MICOM)?
Is the DC12V
at each terminal
RY- Mid Coil
Is the DC12V
at each terminal
RY-S/High Coil
Is the
AC220V(240V) between
"C" and "S/High" of
P.C.B?
Is the
AC220V(240V)
between "C" and "High"
of P.C.B?
Is the
AC220V(240V)
between "C" and "Mid"
of P.C.B?
Replacement ICO3M
Replacement S/High
Check the motor winding
Replacement High
Replacement RY-Mid
Is the DC12V
at each terminal
RY-High Coil
Replacement
(MICOM) and
check the EVA-Th.
Reset the power ON/OFF S/W
58 Floor Standing Type Air Conditioner
Troubleshooting guide
3) Airflow Direction does not operate.
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
Is the unit operating?
Is the Auto Swing S/W "ON"?
Is the DC5V at 16 terminal?
(MICOM)
Is the DC12V
at each terminal?
(RY-Sync COIL)
Check the synchronous
motor winding.
motor winding.
Replacement RY-Sync
Check synchronous connector
contact point.
Check synchronous connector
contact point.
Is the AC220V(240V)
at each terminal
(SYN. MOTOR CONNECTOR)?
Replacement ICO2M
Replacement MICOM
The power ON/OFF S/W ON
Press the Auto Swing S/W
Service Manual 59
Troubleshooting guide
4) Remote control does not operate.
YES
NO
YES
NO
YES
NO
YES
NO
Is the battery of remote
controller normal?
Check the connector.
CN-Disp1
Is the CN-Disp1
connector normal?
Does the operation
of remote controller
properly?
Is the Pre-amp of
display normal?
Replacement MICOM
Replacement preamp assy
Replacement remote-controller
Replacement battery
6 Floor Standing Type Air Conditioner
Safety Precautions
Keep level even when installing the product.
• To avoid vibration or water leakage.
Use two or more people to lift and transport
the product.
the product.
• Avoid personal injury.
Use a soft cloth to clean. Do not use harsh
detergents, solvents, etc.
detergents, solvents, etc.
• There is risk of fire, electric shock, or damage to the
plastic parts of the product.
Do not touch the metal parts of the product
when removing the air filter. They are very
sharp!
when removing the air filter. They are very
sharp!
• There is risk of personal injury.
Do not step on or put anyting on the product.
(outdoor units)
(outdoor units)
• There is risk of personal injury and failure of product.
Do not insert hands or other objects through
the air inlet or outlet while the product is oper-
ated.
the air inlet or outlet while the product is oper-
ated.
• There are sharp and moving parts that could cause
personal injury.
90˚
Wa
x
Thinner
■
Operational
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