Indoor Unit Monitoring; Function Table For The Input Signal (For Awhp Indoor Unit) - LG Dry Contact Installation Manual

Setting and using method

6. Indoor unit monitoring

n Monitoring whether the indoor unit is operating: Refer to
below and connect to the control device that you want to
control.
CN_Ther/Oper CN_MODE
CHANGEOVER_SW
RESET_SW
CN_OUT
n Monitoring indoor unit error: Refer to below and connect to
the control device that you want to control.
CN_Ther/Oper CN_MODE
CHANGEOVER_SW
RESET_SW
CN_OUT
CAUTION
Field supply power should not use more than DC 12 V(3A), 24 V~(3A)
20 Dry contact for thermostat
CN_WIND
SETTING_SW
DISPLAY_LED
TEMP_SW
Field Supply
Power
Operation Display
AC or DC
(Depends on Operation display power type)
CN_WIND
SETTING_SW
DISPLAY_LED
TEMP_SW
Field Supply
Power
Error Display
AC or DC
(Depends on Error display power type)

7. Function table for the input signal (For AWHP Indoor unit)

No power input
Connect separate
External voltage of
DC 12 V, 24 V~
CN_Ther/Oper CN_MODE
CN_WIND
CHANGEOVER_SW
CHANGE
OVER_SW
Notes
Do not input the voltage signal in
"NON VOLT" setting mode otherwise
it will cause serious damage
CN_Oper CN_Ther
Operation Thermal AUTO
1 1 0
1 1 0
1 1 0
1 1 0
1 1 1
1 1 1
1 1 1
1 1 1
※If CN_Oper input was 0(Operation stop), CN_Ther input and CN_Mode input don't work.
※If CN_Ther input was 0(Thermal Off), CN_Mode input doesn't work.
CN_WIND Function
On
DHW
Off
On
NIGHT SILENT
Off
On
EMERGENCY MODE
Off
※If both CN_Oper input and DHW input were 0(Stop, Off), Night silent input and Emergency mode input
don't work.
Setting and using method
DC 12 V, 24V ~
Thermostat
LG does not
supply this section
(Field supply)
CN_Ther/Oper CN_MODE
CN_WIND
CHANGEOVER_SW
CHANGE
OVER_SW
CN_Mode
Function
HEAT COOL
0 0 NA
0 1 COOL
1 0 HEAT
1 1 NA
0 0 AUTO
0 1 NA
1 0 NA
1 1 NA
Installation manual 21