53
7-3. P.C. Board Optional Connector Specifications
Fan output
Optional output
CHK
Operation check
DISP
Display mode
EXCT
Demand
CN32
CN60
CN80
CN71
CN72
CN73
1
2
1
2
3
4
5
6
1
2
3
1
2
1
2
1
2
Function
Connector No. Pin No.
DC12V
Output
DC12V(COM)
Defrosting output
Thermostat ON output
Cooling output
Heating output
Fan output
DC12V(COM)
DC12V(COM)
External error input
Check mode input
0V
Display mode input
0V
Demand input
0V
ON while outdoor unit defrosted
ON while real thermostat ON (compressor ON)
ON while air conditioner in cooling or related operation (COOL, DRY or cooling under AUTO mode)
ON while air conditioner in heating operation (HEAT or heating under AUTO mode)
ON while indoor fan ON (air cleaner in use or via interlock wiring)
Specification Remarks
Generates test code L30 and automatically shuts down air conditioner (only if condition persists
for 1 minute)
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)
Product display mode - Communication just between indoor unit and remote controller enabled (upon turning on of power)
Timer short-circuited out (always)
Imposes thermostat OFF on indoor unit
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
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