LG Dry Contact Module - 2 Contact Points 5V & 12V from Indoor PCB Installation - Manual (Page 14)

Setting and using method
14 Dry Contact for setback
3) Fan level setting mode
4) Power save mode
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When the indoor unit is operating with a Dry Contact For Setback, the fan level can be changed by other
controller when the fan level is set to low level and the indoor is in unlocked condition.
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When setting 9, A mode, the TEMP_SETTING must always be set to ON.
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Power save mode: Adjust the set temperature to +3°C for cooling and -3°C for heating.
Input A Input B Operating mode
OFF OFF
ON OFF
OFF ON
ON ON
OFF OFF
ON OFF
OFF ON
ON ON
Indoor unit operating at low level, locked
Indoor unit operating at low level, unlocked
Indoor unit stopped, locked
Indoor unit stopped, locked
Indoor unit operating at low level, locked
Indoor unit operating at low level, unlocked
Indoor unit stopped, locked
Indoor unit prior operating condition maintained, unlocked
CONTROL_
MODE S/W
7
8
Input A Input B Operating mode
OFF OFF
ON OFF
OFF ON
ON ON
OFF OFF
ON OFF
OFF ON
ON ON
Indoor unit operating in power save mode, locked
Indoor unit operating in power save mode, unlocked
Indoor unit stopped, locked
Indoor unit operating not in power save mode, unlocked
Indoor unit operating in power save mode, locked
Indoor unit operating in power save mode, unlocked
Indoor unit stopped, locked
Indoor unit stopped, locked
CONTROL_
MODE S/W
9
A