LG LSC121PMA Service Manual - Page 49

The phenomena in case of connecting error, INDOOR UNIT

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8. The phenomena in case of connecting error INDOOR UNIT Connector Type Condition Phenomena CN-DC/DC Open and connecting error • The same as the phenomenon of Outdoor Unit. Blue Black Brown Red CN-MOTOR CN-UD CN-D1/D2 CN-TH Open Open Short between terminals Open Open Short between terminals ( and ) of ROOM-TH. Short between terminals ( and ) of PIPE-TH. • The indoor fan does not operate. • The operation indicator of Indoor unit blinks 8 times. • 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 and the outdoor fan stop. • The indoor fan speed is low. • 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. • The operation indicator blinks once (on for 0.5 second, off for 3 seconds) • Continuous operation - 49 -

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- 49 -
8. The phenomena in case of connecting error
INDOOR UNIT
Connector Type
Condition
Open and connecting error
Open
Open
Open
Open
Short between terminals
(
and
) of ROOM-TH.
Short between terminals
(
and
) of PIPE-TH.
Short between terminals
• The same as the phenomenon of Outdoor Unit.
• 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.
• The operation indicator blinks once
(on for 0.5 second, off for 3 seconds)
• Continuous operation
• The operation indicator blinks once.
• The compressor and the outdoor fan stop.
• The indoor fan speed is low.
• The indoor fan does not operate.
• The operation indicator of Indoor unit blinks 8 times.
CN-DC/DC
CN-MOTOR
CN-UD
CN-D1/D2
CN-TH
Blue
Black
Brown
Red
Phenomena
On for 0.5 second
Off for 3 seconds