LG LS-H0560CL Service Manual ▷ View online
—40—
3. Compressor/Outdoor Fan are unable to drive.
Turn on Main Power
Operate "Cooling Mode( )" by setting the desired temperature of the
remote controller is less than one of the indoor temperature by 1°C at least.
remote controller is less than one of the indoor temperature by 1°C at least.
When in Fan Mode, Compressor/Outdoor Fan is stopped.
Check the sensor for indoor temperature is attached as close as to be
effected by the temperature of Heat Exchanger(EVA).
effected by the temperature of Heat Exchanger(EVA).
When the sensor circuit for indoor temperature and connector are in bad
connection or are not engaged, Compressor/Outdoor Fan is stopped.
connection or are not engaged, Compressor/Outdoor Fan is stopped.
• Check the related circuit of R11(12.1K), R12(1.0K), R13(6.2K), R14(1.0K)
Micom (No.38) (Indoor unit).
• Check the indoor temperature sensor is disconnected or not(About 10k
Ω
/ at 25°C).
Turn off Main Power
• Check the electrical wiring diagram of outdoor side.
• Check the abnormal condition for the component of Compressor/Outdoor
• Check the abnormal condition for the component of Compressor/Outdoor
Fan Motor.
• Check the "open" or "short" of conmecting wires between indoor and
outdoor.
Check Relay(RY - COMP) for driving compressor.
• When the power(About AC220V) is applied to the connecting wire
terminal support transferred to compressor, PWB Ass'y is normal.
• Check the circuit related to the relay.
Check point
COMP ON
COMP OFF
Between Micom(No.
DC5V
DC0V
48) and GND
Between IC8(No. 16)
Below DC 1V
About DC12V
and GND
(app)
—41—
Check the SSR high speed operation by Remocon.
(The Indoor Fan Motor is connected)
Turn off Main power
Check the connection of CN-FAN
Check the Fan Motor
Check the Fuse(250V/T2A)
Turn ON Main Power
Check the related circuit of indoor Fan Motor.
• The pin NO 6 of Micom, and the part for driving SSR(the input and output
signal of IC7, PIN NO 7, 10)
• Check the pattern
• Check the SSR
• Check the SSR
- SSR Open: Indoor Fan Motor never operate
-. SSR short: Indoor Fan Motor always operates in case of ON or OFF.
-. SSR short: Indoor Fan Motor always operates in case of ON or OFF.
4. When indoor Fan does not operate.
The voltage of PIN NO 1(blue) and 3(yellow) of CN-FAN.
About AC 180V over
About AC 50V over
SSR is not damaged
Check SSR
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• Confirm that the Vertical Louver is normally geared with the shaft of
Stepping Motor.
• If the regular torque is detected when rotating the Vertical Louver with
hands
¢¡
Normal
• Check the connecting condition of CN-UP/DOWN Connector.
• Check the soldering condition(on PWB) of CN-UP/DOWN Connector.
• Check the soldering condition(on PWB) of CN-UP/DOWN Connector.
Check the operating circuit of the Vertical Louver
• Confirm that there is DC +12V between pin
¤
(RED) of CN-UP/DOWN and
GND.
• Confirm that there is a soldering short at following terminals.
- Between
§ø
,
§œ
,
§ß
and
§
of MICOM
- Between
¤Œ
,
¤º
,
¤
and
¤
of IC8
- Between
¤
,
¤æ
,
¤
and
¤
of IC7
- Between
¤
,
¤Ł
,
¤Ø
,
¤Œ
and
¤º
of CN-UP/DOWN
If there are no problems after above checks.
• Confirm the assembly conditions that are catching and interfering parts in
the rotation radial of the Vertical Louver.
5. When Vertical Louver does not operate.
—43—
6. The phenomena in case of connecting error
INDOOR UNIT
Connector Type
Condition
Open
Connecting reversely
Open
Open
Open
Open
Short between terminals
(
¤Ø
and
¤Œ
) of ROOM-TH.
Short between terminals
• All functions stop.
• The operation with the remote controller, forced and
• The operation with the remote controller, forced and
test one do not operate.
• PWB pattern is damaged when applying the power.
• The up/down vane does not operate.
• The up/down vane does not smoothly operate.
• It does not operate with a remote controller.
• The operation indicator blinks once.
(on for 0.5 second, off for 3 seconds).
• The compressor operates continuously regardless
of the setting temperature and the variation of room
temperature.
temperature.
• The operation indicator blinks once.
• The compressor and the outdoor fan stop.
• The indoor fan speed is low.
• The indoor fan speed is low.
• The indoor Fan does not operate.
CN-POWER
CN-FAN
CN-UP/DOWN
CN-DISP
CN-TH
Phenomena
On for 0.5 second
Off for 3 seconds
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