Optional Connector Specifications Of Indoor P.c. Board - Toshiba MMU-AP0074YH-E Service Manual

5-3. Optional connector specifications of indoor P.C.
board
Function Connector No.
Fan output
CN32
HA
CN61
Optional
output
CN60
External error
input
CN80
CHK
Operation
CN71
check
DISP
Display mode CN72
EXCT
CN73
Demand
Pin No. Specification
1 DC12 V
Output
2
Start / stop input
1
2 0 V (COM)
Remote controller disabling
3
input
4 In-operation output
5 DC12 V (COM)
6 Alarm output
1 DC12 V (COM)
2 Defrosting output
3 Thermostat ON output
Cooling output
4
Heating output
5
Fan output
6
1 DC12 V (COM)
2 DC12 V (COM)
3 External error input
1 Check mode input
0 V
2
1 Display mode input
0 V
2
1 Demand input
2 0 V
45
Remarks
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)
Start / stop input for HA (J01: In place / Removed =
Pulse input (factory default) / Step input)
Enables / disables start / stop control via remote
controller
ON during operation (HA answerback signal)
ON while alarm ON
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)
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