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32
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8-3. Optional connector specifications of indoor P.C. board
Function
Connector No.
Pin No.
Specification
Remarks
Fan output
CN32
1
DC12 V
Factory default setting: ON when indoor unit in
operation and OFF when indoor unit at rest
* Fan can be operated on its own by pressing FAN
button on remote controller (DN = 31)
External error
input
CN80
1
DC12 V (COM)
Generates test code L30 and automatically shuts
down air conditioner
(only if condition persists for 1 minute)
HA
CN61
1
Start / stop input
Start / stop input for HA (J01: In place / Removed =
Pulse input (factory default) / Step input)
Optional
output
CN60
1
DC12 V (COM)
2
0 V (COM)
3
Remote controller disabling
input
Enables / disables start / stop control via remote
controller
4
5
Cooling output
Heating output
ON while air conditioner in cooling or related operation
(COOL, DRY or cooling under AUTO mode)
2
DC12 V (COM)
ON while air conditioner in heating operation
(HEAT or heating under AUTO mode)
2
0 V
3
External error input
6
Fan output
ON while indoor fan ON
(air cleaner in use or via interlock wiring)
4
In-operation output
ON during operation (HA answerback signal)
2
Defrosting output
ON while outdoor unit defrosted
3
Thermostat ON output
ON while real thermostat ON (compressor ON)
5
DC12 V (COM)
6
Alarm output
ON while alarm ON
CHK
Operation
check
CN71
1
Check mode input
Used for indoor operation check (prescribed
operational status output, such as indoor fan
"H" or drain pump ON, to be generated without
communication with outdoor unit or remote controller)
2
0 V
DISP
Display mode
CN72
1
Display mode input
Product display mode - Communication just between
indoor unit and remote controller enabled (upon
turning on of power) Timer short-circuited out (always)
2
0 V
EXCT
Demand
CN73
1
Demand input
Imposes thermostat OFF on indoor unit
2
Output
