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8-4. Indoor P.C. Board Optional Connector Specifications
Function
Option output
Outside error
input
Filter option
error
CHK
Operation check
DISP display
mode
EXCT demand
Connector
No.
CN60
CN80
CN70
CN71
CN72
CN73
Pin
No.
1
2
3
4
5
6
1
2
3
1
2
1
2
1
2
1
2
Specifications
DC12V (COM)
Defrost output
Thermo. ON output
Cooling output
Heating output
Fan output
DC12V (COM)
DC12V (COM)
Outside error input
Filter/Option/Humidifier
setup input
0V
Check mode input
0V
Display mode input
0V
Demand input
0V
Remarks
ON during defrost operation of outdoor unit
ON during Real thermo-ON (Comp ON)
ON when operation mode is in cooling system
(COOL, DRY, COOL in AUTO cooling/heating)
ON when operation mode is in heating system
(HEAT, HEAT in AUTO cooling/heating)
ON during indoor fan ON
(Air purifier is used/Interlock cable)
(When continued for 1 minute)
Check code “L30” is output and forced operation stops.
Option error input is controlled. (Protective operation
for device attached to outside is displayed.)
* Setting of option error input is performed from
remote controller. (DN=2A)
Used for operation check of indoor unit. (Communica-
tion with outdoor unit or remote controller is not
performed, but the specified operation such as indoor
fan “H” or drain pump ON is output.)
Display mode enables indoor unit and remote control-
ler to communicate. (When power is turned on)
Forced thermo-OFF operation in indoor unit