Optional Connector Specifications Of Indoor P.c. Board - Toshiba MMD-AP0076BHPUL Service Manual

8-3. Optional connector specifications of indoor P.C. board

Function Connector No. Pin No.
Fan output
CN32
HA
CN61
Optional
output
CN60
External error
input
CN80
CHK
Operation
CN71
check
DISP
CN72
Display mode
EXCT
CN73
Demand
Input for float
CN34
SW
Output for
CN81
Flow selector
unit
Output power
supply for CN309
option
Connection
CN521
for option
P.C.board
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
DC12V
1
NC
2
3 Float SW input
DC12V
1
EP valve output
2
(Open collector)
Balance valve output
3
(Open collector)
Suction valve output
4
(Open collector)
Discharge valve output
5
(Open collector)
AC230V
1
3 AC230V
DC12V
1
DC5V
2
3 Send
4 Receive
5 0V
- 32 -
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
Normal when between 1 - 3 short-circuits, but
abnormal when open-circuits. (check code "P10"
appears)
This can be used as power supply for option
devices.
Connected Application control kit (TCB-PCUC2E)